July 2004

1

M9999-072004

MIC94062/94063

Micrel

MIC94062/94063

Soft Start High-Side Power Switches

General Description

The MIC94062 and MIC94063 are soft start, high-side load
switches housed in the SC-70-6 package. The devices con-
tain a low on-resistance, 100mΩ(max) P-channel MOSFET
that is driven by built-in level-shift and slew-rate control
circuitry. The low on-resistance supports over 2A of continu-
ous current. The MIC94063 features an active load circuit that
discharges capacitive loads through a 200Ω switch when the
IC is set to the OFF state.

Pull-down circuitry keeps the MIC94062/3 in a default OFF
state until the EN pin is pulled to a high level. The built-in level
shift circuitry allows for a logic signal that may be different
from the supply voltage to switch the high-side P-channel
MOSFET on or off. Integrating the level-shift and slew-rate
control circuitry saves valuable board space and reduces
component placement cost compared to discrete solutions.
The 500µs turn-on slew rate control prevents in-rush current
from causing glitches on the supply rail.

Battery life is saved in portable applications with the IC’s low
quiescent current of 2µA and low shutdown current of <1µA.
Their 1.8V to 5.5V operating voltage range makes the
MIC94062/63 suitable for 1-cell Lithium ion, 2- to 3-cell NiMH/
NiCad/Alkaline, as well as other sub-5V input applications.

The MIC94062 and MIC94063 are housed in the

Teeny

™

SC-70-6 package and offered in both standard and Pb-free
lead finishes.

Typical Application

Load Switch Application

Features

• 1.8V to 5.5V input voltage range
• Built-in level shift circuitry:

Can be driven by 1.5V logic

• Low on-resistance P-channel MOSFET:

77mΩ at V

GS

= 4.5V (typ)

2A continuous current

• Built-in slew-rate control:

Controlled 500µs turn-on rise-time
Fast 60ns turn-off fall time

• 2kV ESD protection
• Low 2µA quiescent current
• <1µA micropower shutdown
• Built-in fast-off load discharge circuit (MIC94063)
•

Teeny

™ SC-70-6 package

Applications

• Load switch in portable applications:

Cellular phones
PDAs
MP3 players
Digital cameras
Notebook PCs
Barcode scanners

• Battery switch-over circuits
• Level translators

Teeny is a trademark of Micrel, Inc. Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone]

• http://www.micrel.com

EN

V

IN

MIC94062

77m

Ω

LOAD

Level Shift

and

Slew Rate

Control

Load Switch Application

with Capacitive Load Discharge

EN

V

IN

MIC94063

77m

Ω

200

Ω

LOAD

Level Shift

Slew Rate

Control

and

Load

Discharge

MIC94062/94063

Micrel

M9999-072004

2

July 2004

SC-70-6 (C6)

Pin Description

Pin Number

Pin Name

Pin Function

1

VOUT

Drain of P-channel MOSFET; no bypass capacitor required.

2, 5

GND

Ground connections.

3

EN

Enable input.

4

VIN

Source of P-channel MOSFET; no bypass capacitor required.

6

NC

No connect.

Ordering Information

Load Discharge

Marking Code

Junction

Part Number

Circuitry

Temp. Range

Package

Pb-Free

MIC94062BC6

No

P56

–40°C to 125°C

SC-70-6

No

MIC94063BC6

Yes

P57

–40°C to 125°C

SC-70-6

No

MIC94062YC6

No

P56

(1)

–40°C to 125°C

SC-70-6

Yes

MIC94063YC6

Yes

P57

(1)

–40°C to 125°C

SC-70-6

Yes

3

1

6

2

4

5

Notes

1.

Underscored first charcter denotes Pb-free ("P").

Pin Configuration

July 2004

3

M9999-072004

MIC94062/94063

Micrel

Absolute Maximum Ratings

(1)

Input Voltage (V

IN

) ........................................................ +6V

Enable Voltage (V

EN

) .................................................... +6V

Continuous Drain Current (I

D

)

(3)

T

A

= 25°C .................................................................. ±2A

T

A

= 85°C ............................................................... ±1.4A

Pulsed Drain Current (I

DP

)

(4) ..................................................

±6A

Continuous Diode Current (I

S

)

(5)

............................. –50mA

Power Dissipation

(3)

SC-70-6 lead (T

A

= 85°C) .................................. 270 mW

Ambient Storage Temperature (T

S

) ......... –55°C to +150°C

ESD Rating

(6) ...............................................................................

2kV

Operating Ratings

(2)

Input Voltage Range (V

IN

) ............................... 1.8V to 5.5V

Junction Temperature Range (T

J

) ........... –40°C to +150°C

Package Thermal Impedance

(3)

θ

JA

SC-70-6 lead ............................................... 240°C/W

Electrical Characteristics

T

A

= 25°C, unless otherwise specified.

Symbol

Parameter

Condition

Min

Typ

Max

Units

Static

V

EN(th)

EN Threshold Voltage

V

IN

= 1.8V to 4.5V, I

D

= –250µA

0.5

1.2

V

I

EN

EN Input Current (Quiescent Current)

V

IN

= V

EN

= 5.5V

2

4

µA

I

VIN

OFF State Leakage Current

V

EN

= OPEN or 0V, V

IN

= +5.5V

1

µA

R

DS(ON)

P-Channel Drain-Source

V

IN

= 4.5V, I

D

= –100 mA; V

EN

= 1.5V

77

100

mΩ

On-Resistance

V

IN

= 3.6V, I

D

= –100 mA; V

EN

= 1.5V

85

115

mΩ

V

IN

= 2.5V, I

D

= –100 mA; V

EN

= 1.5V

100

140

mΩ

V

IN

= 1.8V, I

D

= –100 mA; V

EN

= 1.5V

145

200

mΩ

R

SHUTDOWN

Turn-off Impedance (94061)

V

IN

= 3.6V, V

EN

= 0V or OPEN

200

300

Ω

Dynamic

(7)

t

d(on)

Turn-On Delay Time

V

IN

= 3.6V, I

D

= –100mA, V

EN

= 1.5V

600

900

µs

t

r

Turn-On Rise Time

V

IN

= 3.6V, I

D

= –100mA, V

EN

= 1.5V

500

800

1500

µs

t

d(off)

Turn-Off Delay Time

V

IN

= 3.6V, I

D

= –100mA, V

EN

= 1.5V

70

150

ns

t

f

Turn-Off Fall Time

V

IN

= 3.6V, I

D

= –100mA, V

EN

= 1.5V

60

100

ns

Notes

1.

T

A

= 25°C unless otherwise noted. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical

specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function
of the maximum junction temperature, T

J(Max)

, the junction-to-ambient thermal resistance, θ

JA

, and the ambient temperature, T

A

.

2.

This device is not guaranteed to operate beyond its specified operating rating.

3.

Mounted on 1 square-inch pad of 2 oz. copper.

4.

Pulse width < 300µs with <2% duty cycle.

5.

Body diode current conduction is not recommended.

6.

IC devices are inherently ESD sensitive.

7.

Handling precautions required. Human body model, 1.5kΩ in series with 100pF. Dynamic specifications are guaranteed by design.

MIC94062/94063

Micrel

M9999-072004

4

July 2004

Typical Characteristics

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

-40

-20

0

20

40

60

80

100

120

140

160

RDS-ON (NORMALIZED)

TEMPERATURE (°C)

RDS-On Variance with

Temperature

V

DS

= 3.6V

I

D

= 0.1A

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

1.5 2 2.5 3 3.5 4 4.5 5 5.5

EN THRESHOLD (V)

INPUT VOLTAGE (V)

EN Threshold Voltage

vs. Input Voltage

I

D

= –250µA

0

50

100

150

200

250

300

350

400

450

500

0

0.5

1

1.5

2

2.5

3

VDROP (mV)

LOAD CURRENT (A)

Voltage Drop

vs. Load Current

V

IN

= 4.5V

V

IN

= 2.5V

V

IN

= 1.8V

500

600

700

800

900

1000

1100

1200

1300

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

RISE TIME (µ

s)

INPUT VOLTAGE (V)

Turn On Delay Time

vs. Input Voltage

IL=0.1A

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1

2

3

4

5

6

RISE TIME (µ

s)

INPUT VOLTAGE (V)

Turn On Rise Time

vs. Input Voltage

IL=0.1A

50

100

150

200

0

1

2

3

4

5

6

RDS - ON (m-ohm)

INPUT VOLTAGE (V)

On Resistance vs.

Input Voltage

IL = 0.1A

IL = 1.2A

IL =
0.9A

July 2004

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M9999-072004

MIC94062/94063

Micrel

Timing Waveforms

TIME (200µs/div.)

Load Current

(1mA/div

.)

Enable

(2V/div

.)

V

OUT

(1V/div

.)

V

IN

= 3.6V

Turn-On Response

VIN=3.6V

TIME (2µs/div.)

Load Current

(1mA/div

.)

Enable

(2V/div

.)

V

OUT

(1V/div

.)

V

IN

= 3.6V

Turn-Off Response

VIN = 3.6V

IL = 1mA

MIC94062

MIC94062

MIC94063

MIC94063

MIC94062/3

MIC94062/3

TIME (200µs/div.)

Load Current

(100mA/div

.)

Enable

(2V/div

.)

V

OUT

(1V/div

.)

V

IN

= 3.6V

Turn-On Response

VIN=3.6V

TIME (200µs/div.)

Load Current

(1mA/div

.)

Enable

(2V/div

.)

V

OUT

(1V/div

.)

Turn-On Response

VIN = 3.6V

TIME (200ns/div.)

Load Current

(100mA/div

.)

Enable

(2V/div

.)

V

OUT

(1V/div

.)

V

IN

= 3.6V

Turn-Off Response

VIN = 3.6V

TIME (2µs/div.)

Load Current

(1mA/div

.)

Enable

(2V/div

.)

V

OUT

(1V/div

.)

V

IN

= 3.6V

Turn-Off Response

VIN = 3.6V

MIC94062/94063

Micrel

M9999-072004

6

July 2004

Package Information

0.30 (0.012)
0.10 (0.004)

2.20 (0.087)
1.80 (0.071)

2.40 (0.094)
1.80 (0.071)

1.35 (0.053)
1.15 (0.045)

0.65 (0.0256) BSC

1.00 (0.039)
0.80 (0.032)

0.10 (0.004)
0.00 (0.000)

DIMENSIONS:

MM (INCH)

0.30 (0.012)
0.15 (0.006)

0.18 (0.007)
0.10 (0.004)

1.10 (0.043)
0.80 (0.032)

SC-70-6 Pin (C6)

MICREL, INC.

1849 FORTUNE DRIVE

SAN JOSE, CA 95131

USA

TEL

+ 1 [phone]

FAX

+ 1 [phone]

WEB

http://www.micrel.com

This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or

other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc.

© 2004 Micrel, Incorporated

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www.datasheetcatalog.com

Datasheets for electronics components.