LT1117/LT1117-2.85
LT1117-3.3/LT1117-5
800mA Low Dropout
Positive Regulators
Adjustable and Fixed 2.85V,
3.3V, 5V
DESCRIPTIO
FEATURES
Space Saving SOT-223 Surface Mount Package The LT1117 is a positive low dropout regulator designed
Three-Terminal Adjustable or Fixed 2.85V, 3.3V, 5V to provide up to 800mA of output current. The device is
Output Current of 800mA available in an adjustable version and fixed output voltages
Operates Down to 1V Dropout of 2.85V, 3.3V and 5V. The 2.85V version is designed
Guaranteed Dropout Voltage at Multiple Current Levels specifically to be used in Active Terminators for the SCSI
0.2% Line Regulation Max bus. All internal circuitry is designed to operate down to 1V
0.4% Load Regulation Max input to output differential. Dropout voltage is guaranteed
at a maximum of 1.2V at 800mA, decreasing at lower load
currents. On chip trimming adjusts the reference/output
APPLICATI S
voltage to within Ä… 1%. Current limit is also trimmed in
Active SCSI Terminators
order to minimize the stress on both the regulator and the
High Efficiency Linear Regulators
power source circuitry under overload conditions.
Post Regulators for Switching Supplies
The low profile surface mount SOT-223 package allows
Battery Chargers
the device to be used in applications where space is
5V to 3.3V Linear Regulators
limited. The LT1117 requires a minimum of 10µF of output
capacitance for stability. Output capacitors of this size or
larger are normally included in most regulator designs.
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the quiescent
current of the LT1117 flows into the load, increasing
efficiency.
TYPICAL APPLICATI
Active Terminator for SCSI-2 Bus Dropout Voltage (VIN  VOUT)
1.4
110&!
1.2
110&! TJ = 25°C
1.0
LT1117-2.85
110&!
18 TO 27
IN OUT
LINES
TJ = 125°C
0.8
GND
+ +
4.75V TO
110&! 0.6
10µF 22µF
5.25V
0.4
LT1117 " TA01
0.2
INDICATES GUARANTEED TEST POINT
0
0 100 200 300 400 500 600 700 800
OUTPUT CURRENT (mA)
LT1117 " TPC01
1
DROPOUT VOLTAGE (V)
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LT1117-3.3/LT1117-5
ABSOLUTE AXI U RATI GS
Input Voltage Operating JunctionTemperature Range ..... 0°C to 125°C
Operating Voltage Storage Temperature Range .................  65°C to 150°C
LT1117, LT1117-3.3, LT1117-5 ...................... 15V Lead Temperature................... (See Soldering Methods)
LT1117-2.85 ................................................... 10V
Surge Voltage
LT1117, LT1117-3.3, LT1117-5 ...................... 20V
PACKAGE/ORDER I FOR ATIO
ORDER PART
ORDER PART
FRONT VIEW
FRONT VIEW
NUMBER
NUMBER
3 IN
LT1117CST 3 IN
LT1117CM
TAB IS
TAB IS
2 OUT LT1117CST-2.85
LT1117CM-2.85
VOUT
2 OUT
VOUT
LT1117CST-3.3
LT1117CM-3.3
1 ADJ/GND
1 ADJ/GND
LT1117CST-5
LT1117CM-5
ST PACKAGE
M PACKAGE
PART MARKING
PART MARKING
3-LEAD PLASTIC SOT-223
3-LEAD PLASTIC DD
1117 11173 1117 11173
TJ MAX = 125°C,¸JC = 10°C/W
TJ MAX = 125°C,¸JC = 15°C/W
11172 11175
11172 11175
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Voltage LT1117 IOUT = 10mA, (VIN  VOUT) = 2V, TJ = 25°C 1.238 1.250 1.262 V
10 d" IOUT d" 800mA, 1.4V d" (VIN - VOUT) d" 10V 1.225 1.250 1.270 V
Output Voltage LT1117-2.85 IOUT = 10mA, VIN = 4.85V, TJ = 25°C 2.820 2.850 2.880 V
0 d" IOUT d" 800mA, 4.25V d" VIN d" 10V 2.790 2.850 2.910 V
0 d" IOUT d" 500mA, VIN = 3.95V 2.790 2.850 2.910 V
LT1117-3.3 IOUT = 10mA, VIN = 5V, TJ = 25°C 3.267 3.300 3.333 V
0 d" IOUT d" 800mA, 4.75V d" VIN d" 10V 3.235 3.300 3.365 V
LT1117-5 IOUT = 10mA, VIN = 7V, TJ = 25°C 4.950 5.000 5.050 V
0 d" IOUT d" 800mA, 6.50V d" VIN d" 12V 4.900 5.000 5.100 V
Line Regulation LT1117 IOUT = 10mA, 1.5V d" VIN  VOUT d" 15V (Note 1) 0.035 0.2 %
LT1117-2.85 IOUT = 0mA, 4.25V d" VIN d" 10V (Note 1) 1 6 mV
LT1117-3.3 IOUT = 0mA, 4.75V d" VIN d" 15V (Note 1) 1 6 mV
LT1117-5 IOUT = 0mA, 6.5V d" VIN d" 15V (Note 1) 1 10 mV
Load Regulation LT1117 (VIN  VOUT) = 3V, 10mA d" IOUT d" 800mA (Note 1) 0.1 0.4 %
LT1117-2.85 VIN = 4.25V, 0 d" IOUT d" 800mA (Note 1) 1 10 mV
LT1117-3.3 VIN = 4.75V, 0 d" IOUT d" 800mA (Note 1) 1 10 mV
LT1117-5 VIN = 6.5V, 0 d" IOUT d" 800mA (Note 1) 1 15 mV
Dropout Voltage IOUT = 100mA (Note 2) 1.00 1.10 V
IOUT = 500mA (Note 2) 1.05 1.15 V
IOUT = 800mA (Note 2) 1.10 1.20 V
Current Limit (VIN  VOUT) = 5V, TJ = 25°C, 800 950 1200 mA
Minimum Load Current LT1117 (VIN  VOUT) = 15V (Note 3) 1.7 5 mA
2
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LT1117-3.3/LT1117-5
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Quiescent Current LT1117-2.85 VIN d" 10V 5 10 mA
LT1117-3.3 VIN d" 15V 5 10 mA
LT1117-5 VIN d" 15V 5 10 mA
Thermal Regulation TA = 25°C, 30ms Pulse 0.01 0.1 %/W
Ripple Rejection fRIPPLE = 120Hz, (VIN  VOUT) = 3V,
VRIPPLE = 1Vp-p 60 75 dB
Adjust Pin Current 55 120 µA
Adjust Pin Current Change 10mA d" IOUT d" 800mA, 1.4V d" (VIN  VOUT) d" 10V 0.2 5 µA
Temperature Stability 0.5 %
Long Term Stability TA = 125°C, 1000Hrs 0.3 %
RMS Output Noise (% of VOUT), 10Hz d" f d" 10kHz 0.003 %
Thermal Resistance (Junction-to-Case, at Tab) 15 °C/W
The denotes specifications which apply over the full operating Note 2: Dropout voltage is specified over the full output current range of
temperature range. the device. Dropout voltage is defined as the minimum input/output
differential measured at the specified output current. Test points and limits
Note 1: See thermal regulation specification for changes in output voltage
are also shown on the Dropout Voltage curve.
due to heating effects. Load regulation and line regulation are measured at
a constant junction temperature by low duty cycle pulse testing. Note 3: Minimum load current is defined as the minimum output current
required to maintain regulation.
TYPICAL PERFOR A CE CHARACTERISTICS
Minimum Operating Current
(Adjustable Device) Short-Circuit Current Load Regulation
4 1.25 0.10
" ILOAD = 800mA
TJ = 125°C
0.05
1.00
3
TJ = 125°C
TJ = 25°C
0
0.75
TJ = 25°C
2  0.05
0.50
TJ =  55°C
 0.10
1
0.25
 0.15
0 0  0.20
0 5 10 15 20 0 5 10 15  50  25 0 25 50 75 100 125
INPUT/OUTPUT DIFFERENTIAL (V) INPUT/OUTPUT DIFFERENTIAL (V) TEMPERATURE (°C)
LT1117 " TPC02 LT1117 " TPC03 LT1117 " TPC04
3
SHORT CIRCUIT CURRENT (A)
OUTPUT VOLTAGE DEVIATION (%)
MINIMUM OPERATING CURRENT (mA)
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LT1117-3.3/LT1117-5
TYPICAL PERFOR A CE CHARACTERISTICS
LT1117 Ripple Rejection Temperature Stability
LT1117 Ripple Rejection vs Current
2.0
100 100
VRIPPLE d"
90
VRIPPLE d" 3VP-P 0.5VP-P 90
fRIPPLE = 120Hz
80
80
1.0
(VIN  VOUT) e" 3V
70 70
VRIPPLE d" 3VP-P
60 60
fRIPPLE = 20kHz 0
50 50
40 40
(VIN  VOUT) e" VDROPOUT VRIPPLE d" 0.5VP-P
30
30
 1.0
VOUT = 5V
CADJ = 200µF AT f < 60Hz
20
20
CADJ = 25µF
CADJ = 25µF AT f > 60Hz
10 10
COUT = 25µF
IOUT = 0.5A
 2.0
0
0
 50  25 0 25 50 75 100 125 150
10 100 1k 10k 100k 0 0.2 0.4 0.6 0.8
TEMPERATURE (°C)
FREQUENCY (Hz) OUTPUT CURRENT (A)
LT1117 " TPC07
LT1117 " TPC05 LT1117 " TPC06
LT1117-2.85 LT1117-5
Load Transient Response
Adjust Pin Current Load Transient Response
100
0.3 0.3
90
0.2 0.2
80
0.1 0.1
70
0 0
60
CIN = 10µF CIN = 10µF
50
 0.1  0.1
COUT = 10µF TANTALUM COUT = 10µF TANTALUM
40 VIN = 4.25V VIN = 6.5V
 0.2  0.2
PRELOAD = 0.1A PRELOAD = 0.1A
30
0.5 0.5
20
0 0
10
0
 0.5  0.5
 50  25 0 25 50 75 100 125 150
0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
TIME (µs) TIME (µs)
LT1117 " TPC08
LT1117 " TPC09 LT1117 " TPC10
LT1117-2.8 LT1117-5
Line Transient Response Line Transient Response
60 60
CIN = 1µF
CIN = 1µF
COUT = 10µF TANTALUM
40 40 COUT = 10µF TANTALUM
IOUT = 0.1A
IOUT = 0.1A
20 20
0 0
 20  20
 40  40
5.25 7.50
4.25 6.50
3.25 5.50
0 20 40 60 80 100 120 140 160 180 200 0 20 40 60 80 100 120 140 160 180 200
TIME (µs) TIME (µs)
LT1117 " TPC11 LT1117 " TPC12
4
RIPPLE REJECTION (dB)
RIPPLE REJECTION (dB)
OUTPUT VOLTAGE CHANGE (%)
DEVIATION (V)
DEVIATION (V)
AJUST PIN CURRENT (
µ
A)
(A)
(A)
LOAD CURRENT
OUPUT VOLTAGE
LOAD CURRENT
OUPUT VOLTAGE
DEVIATION (mV)
DEVIATION (mV)
(V)
(V)
INPUT VOLTAGE
OUPUT VOLTAGE
INPUT VOLTAGE
OUPUT VOLTAGE
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LT1117-3.3/LT1117-5
I
BLOCK DAGRA
IN
THERMAL
LIMIT
ADJ OUT
GND FOR FIXED VOLTAGE DEVICE
LT1117 " BD01
APPLICATI HI TS
The LT1117 family of three-terminal regulators are easy to When the adjust terminal is bypassed the required value
use. They are protected against short circuit and thermal of the output capacitor increases. The device will require
overloads. Thermal protection circuitry will shutdown the an output capacitor of 22µF tantalum or 150µF aluminum
regulator should the junction temperature exceed 165°C electrolytic when the adjust pin is bypassed.
at the sense point. These regulators are pin compatible
Normally, capacitor values on the order of 100µF are used
with older three-terminal adjustable regulators, offer
in the output of many regulators to ensure good load
lower dropout voltage and more precise reference toler-
transient response with large load current changes. Out-
ance. Reference stability over temperature is improved
put capacitance can be increased without limit and larger
over older types of regulators.
values of output capacitance further improve stability and
transient response.
Stability
The LT1117 family of regulators requires an output ca-
Protection Diodes
pacitor as part of the device frequency compensation. A
In normal operation, the LT1117 family does not need any
minimum of 10µF of tantalum or 50µF of aluminum
protection diodes. Older adjustable regulators required
electrolytic is required. The ESR of the output capacitor
protection diodes between the adjust pin and the output
should be less than 0.5&!. Surface mount tantalum capaci-
and between the output and input to prevent over stress-
tors, which have very low ESR, are available from several
ing the die. The internal current paths on the LT1117 adjust
manufacturers.
pin are limited by internal resistors. Therefore, even with
When using the LT1117 adjustable device the adjust capacitors on the adjust pin, no protection diode is needed
terminal can be bypassed to improve ripple rejection. to ensure device safety under short circuit conditions. The
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LT1117-3.3/LT1117-5
APPLICATI HI TS
adjust pin can be driven, on a transient basis, Ä…25V with to set the overall output voltage. Normally this current is
respect to the output without any device degradation. chosen to be the specified minimum load current of 10mA.
Because IADJ is very small and constant when compared
Diodes between input and output are not usually needed.
to the current through R1, it represents a small error and
The internal diode between the output and input pins of the
can usually be ignored. For fixed voltage devices R1 and
device can withstand microsecond surge currents of 10A
R2 are included in the device.
to 20A. Normal power supply cycling can not generate
currents of this magnitude. Only with extremely large
Load Regulation
output capacitors, such as 1000µF and larger, and with the
Because the LT1117 is a three-terminal device, it is not
input pin instantaneously shorted to ground can damage
possible to provide true remote load sensing. Load regu-
occur. A crowbar circuit at the input of the LT1117 in
lation will be limited by the resistance of the wire connect-
combination with a large output capacitor could generate
ing the regulator to the load. The data sheet specification
currents large enough to cause damage. In this case a
for load regulation is measured at the output pin of the
diode from output to input is recommended, as shown in
device. Negative side sensing is a true Kelvin connection,
Figure 1.
with the bottom of the output divider returned to the
D1
negative side of the load. Although it may not be immedi-
1N4002
(OPTIONAL)
ately obvious, best load regulation is obtained when the
top of the resistor divider (R1) is returned directly to the
LT1117
output pin of the device, not to the load. This is illustrated
VIN IN OUT VOUT
in Figure 3. Connected as shown, RP is not multiplied by
+
COUT
ADJ
R1
150µF the divider ratio. If R1 were connected to the load, the
effective resistance between the regulator and the load
+
CADJ
R2
would be:
10µF
LT1117 " TA02
R2 + R1
RP × ,RP = Parasitic Line Resistance
R1
Figure 1.
RP
PARASITIC
LT1117
Output Voltage
LINE RESISTANCE
VIN
IN OUT
The LT1117 develops a 1.25V reference voltage between ADJ
the output and the adjust terminal (see Figure 2). By
R1 RL
placing a resistor between these two terminals, a constant
CONNECT
R1 TO CASE
current is caused to flow through R1 and down through R2
R2
LT1117
VIN IN OUT VOUT
CONNECT
ADJ R2 TO LOAD
VREF R1
LT1117 " TA04
IADJ
50µA
R2
R2
VOUT = VREF 1 + + IADJ R2

( )
R1 Figure 3. Connections for Best Load Regulation
LT1117 " TA03
For fixed voltage devices the top of R1 is internally Kelvin
Figure 2. Basic Adjustable Regulator
connected, and the ground pin can be used for negative
side sensing.
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LT1117-3.3/LT1117-5
APPLICATI HI TS
Thermal Considerations The thermal resistance for each application will be affected
by thermal interactions with other components on the
LT1117 series regulators have internal thermal limiting
board. Some experimentation will be necessary to deter-
circuitry designed to protect the device during overload
mine the actual value.
conditions. For continuous normal load conditions how-
ever, the maximum junction temperature rating of 125°C
The power dissipation of the LT1117 is equal to:
must not be exceeded.
PD = ( VIN  VOUT )( IOUT )
It is important to give careful consideration to all sources
Maximum junction temperature will be equal to:
of thermal resistance from junction to ambient. For the
TJ =TA(MAX) + PD(Thermal Resistance (junction-to-
SOT-223 package, which is designed to be surface
ambient))
mounted, additional heat sources mounted near the de-
vice must also be considered. Heat sinking is accom-
Maximum junction temperature must not exceed 125°C.
plished using the heat spreading capability of the PC board
and its copper traces. The thermal resistance of the
Ripple Rejection
LT1117 is 15°C/W from the junction to the tab. Thermal
The curves for Ripple Rejection were generated using an
resistances from tab to ambient can be as low as 30°C/W.
adjustable device with the adjust pin bypassed. These
The total thermal resistance from junction to ambient can
curves will hold true for all values of output voltage. For
be as low as 45°C/W. This requires a reasonable sized PC
proper bypassing, and ripple rejection approaching the
board with at least one layer of copper to spread the heat
values shown, the impedance of the adjust pin capacitor,
across the board and couple it into the surrounding air.
at the ripple frequency, should be < R1. R1 is normally in
Experiments have shown that the heat spreading copper
the range of 100&!-200&!. The size of the required adjust
layer does not need to be electrically connected to the tab
pin capacitor is a function of the input ripple frequency. At
of the device. The PC material can be very effective at
120Hz, with R1=100&!, the adjust pin capacitor should be
transmitting heat between the pad area, attached to the tab
> 13µF. At 10kHz only 0.16µF is needed.
of the device, and a ground plane layer either inside or on
For fixed voltage devices, and adjustable devices without
the opposite side of the board. Although the actual thermal
an adjust pin capacitor, the output ripple will increase as
resistance of the PC material is high, the Length/Area ratio
the ratio of the output voltage to the reference voltage
of the thermal resistor between layers is small. The data in
(VOUT/VREF). For example, with the output voltage equal to
Table 1 was taken using 1/16" FR-4 board with 1oz. copper
5V, the output ripple will be increased by the ratio of 5V/
foil. It can be used as a rough guideline in estimating
1.25V. It will increase by a factor of four. Ripple rejection
thermal resistance.
will be degraded by 12dB from the value shown
Table 1.
on the curve.
COPPER AREA
THERMAL RESISTANCE
TOPSIDE* BACKSIDE BOARD AREA (JUNCTION-TO-AMBIENT)
2500 Sq. mm 2500 Sq. mm 2500 Sq. mm 45°C/W
1000 Sq. mm 2500 Sq. mm 2500 Sq. mm 45°C/W
225 Sq. mm 2500 Sq. mm 2500 Sq. mm 53°C/W
100 Sq. mm 2500 Sq. mm 2500 Sq. mm 59°C/W
1000 Sq. mm 1000 Sq. mm 1000 Sq. mm 52°C/W
1000 Sq. mm 0 1000 Sq. mm 55°C/W
* Tab of device attached to topside copper
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LT1117-3.3/LT1117-5
TYPICAL APPLICATI S
1.2V to 10V Adjustable Regulator 5V Regulator with Shutdown
LT1117 LT1117
VIN VOUT
IN OUT VIN IN OUT 5V
R1
121&!
ADJ ADJ
121&! +
1%
10µF
+ +
C1* C2
+
10µF R2 100µF
1k 100µF
1k
2N3904
TTL
365&!
1%
1k
* NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
LT1117 " TA06
R2

VOUT = 1.25V 1 + 
( )
R1
LT1117 " TA05
Remote Sensing
RP
LT1117
(MAX. DROP 300mV)
OUTPUT
VIN IN OUT
5V
ADJ
VIN
+
100µF
7 2
25&!
6
LM301A
+
1k RL
1
3
10µF
121&!
8
4
5µF
365&!
100pF
RETURN
25&!
RETURN
LT1117 " TA07
Adjusting Output Voltage of Fixed Regulators Regulator with Reference
LT1117-5
LT1117-5
VIN > 12V 5V TO 10V VIN > 11.5V IN OUT 10V
IN OUT
+ + + +
GND
GND
100µF 100µF
10µF 10µF
5VOUT
+
10µF* 1k LT1029
LT1117 " TA09
* OPTIONAL IMPROVES RIPPLE REJECTION
LT1117 " TA08
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LT1117-3.3/LT1117-5
TYPICAL APPLICATI S
Battery Charger Battery Backed Up Regulated Supply
LT1117 IF LT1117-5
OUT
5.2V LINE
VIN IN VOUT
VIN IN OUT
5.0V BATTERY
1.25V RS
+
GND
10µF
ADJ
R1
50&!
R2
VOUT  1.25V 1 + 
( )
R1 SELECT FOR
IF =
CHARGE RATE
R2 LT1117-5
 RS 1 + 
( )
R1
IN OUT
+ +
IF 1
GND
= 6.5V
10µF 100µF
VOUT R2
 RS 1 + 
( )
R1
LT1117 " TA13
LT1117 " TA10
Improving Ripple Rejection Automatic Light Control
LT1117 LT1117
VIN IN OUT VIN e" 16.5V
IN OUT
+ R1 +
ADJ ADJ
121&! 10µF 1.2k 100µF
10µF
1%
150µF
R2 +
C1
365&!
*C1 IMPROVES RIPPLE 10µF
1%
REJECTION. XC SHOULD BE
H" R1 AT RIPPLE FREQUENCY
LT1117 " TA14 LT1117 " TA16
High Efficiency Dual Supply
FEEDBACK PATH
MUR410
3.3V OUTPUT (TYPICAL)
+
470µF
LT1117-5
MUR410
+5V
IN OUT
0.5A
GND
+
+
10µF 1N4002
470µF
+VIN
LT1117-5
MUR410
IN OUT
SWITCHING
REGULATOR
GND +
+
10µF 1N4002
470µF
 5V
0.5A
LT1117 " TA12
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LT1117-3.3/LT1117-5
TYPICAL APPLICATI S
High Efficiency Dual Linear Supply
L1
LT1117-5
285µH
+5V
IN OUT
0.5A
+
MBR360 GND
1000µF
(HEAT SINK)
2.4k
Q1
2N6667
10k 1k 510k
(DARLINGTON)
LT1004-2.5
30k
+
D11
100µF
1N4002
20k* 30.1k*
MDA201
V+
+
1/2
4700µF
LT1018
L1
LT1117-5
130VAC- STANCOR 285µH
90VAC P-8685
IN OUT
+
MBR360 GND
1000µF
(HEAT SINK)
2.4k
2N6667
(DARLINGTON) 10k 1k 510k
LT1004-2.5
30k
+
D2
100µF
1N4002
20k* 30.1k*
MDA201
+
1/2
4700µF
LT1018
V
= 1 % FILM RESISTORS
*
 5V
= MOTOROLA
MDA
0.5A
= PULSE ENGINEERING, INC. #PE-92106
L1
LT1117 " TA11
Low Dropout Negative Supply
LT1117-5
VIN
IN OUT
GND
+ +
10µF 100µF
VOUT =  5V
FLOATING INPUT
LT1117 " TA17
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LT1117/LT1117-2.85
LT1117-3.3/LT1117-5
TYPICAL APPLICATI S
High Efficiency Regulator
LT1117
1mH
OUTPUT
28V INPUT IN OUT
+
ADJ
240&!
MR1122 10,000µF
10k +
470&!
100µF
2k
OUTPUT
28V 1N914
ADJUST
1k
1M
4N28
10k
LT1011
10k
28V
1N914
LT1117 " TA15
SOLDERI G ETHODS
The SOT-223 is manufactured with gull wing leadform for
surface mount applications. The leads and heatsink are
solder plated and allow easy soldering using non-active or
mildly active fluxes. The package is constructed with three
leads exiting one side of the package and one heatsink
exiting the other side, and the die attached to the heatsink
internally.
The recommended methods of soldering SOT-223 are:
vapor phase reflow and infrared reflow with preheat of
component to within 65°C of the solder temperature.
Hand soldering and wave soldering are not recom-
mended since these methods can easily damage the
LT1117 " TA18
part with excessive thermal gradients across the pack-
age.
Care must be exercised during surface mount to minimize
large (> 30°C per second) thermal shock to the package.
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
11
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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LT1117-3.3/LT1117-5
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
M Package
3-Lead Plastic DD
0.401 Ä… 0.015
0.060
(10.185 Ä… 0.381)
(1.524)
0.175 Ä… 0.008
(4.445 Ä… 0.203) 0.050 Ä… 0.008
(1.270 Ä… 0.203)
15° TYP
+0.008
0.004
+0.012
 0.004
0.331
0.059
 0.020
(1.499) +0.203
0.102
+0.305
(  0.102
)
8.407 TYP
(  0.508
)
0.105 Ä… 0.008
(2.667 Ä… 0.203)
0.100 Ä… 0.010
0.050 Ä… 0.012
+0.012 0.022 Ä… 0.005
0.143 (2.5402 Ä… 0.254)
(1.270 Ä… 0.305)
 0.020
(0.559 Ä… 0.127)
DD3 0693
0.050 Ä… 0.008
+0.305
3.632 (1.270 Ä… 0.203)
(  0.508
)
ST Package
3-Lead Plastic SOT-223
0.248  0.264
(6.30  6.71)
0.116  0.124
(2.95  3.15)
10°  16°
0.010  0.014
0.264  0.287
10°
(0.25  0.36)
(6.71  7.29)
MAX
0.130  0.146
(3.30  3.71)
0.071
0.025  0.033 0.012
10°  16°
(1.80)
(0.31)
(0.64  0.84)
0.0008  0.0040
MAX
MIN
0.181
(0.0203  0.1016)
(4.60)
NOM SOT233 0793
0.090 0.033  0.041
(2.29) (0.84  1.04)
NOM
LT/GP 0993 5K REV B
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12
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