AMS4154 datasheet(3/5 Pages) ADMOS

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Advanced Monolithic Systems, Inc. www.advanced-monolithic.com

Phone (925) 443-0722 Fax (925) 443-0723

AMS4154

ABSOLUTE MAXIMUM RATINGS

Input Supply Voltage

-0.3V to +34V Junction Temperature

+150

°C

SW Voltage

-1V to VIN + 0.3V Storage Temperature

-65

°C to +150°C

BS Voltage

V LX – 0.3V to V LX + 6V

Lead Temperature

260

°C

All Other Pins

-0.3V to +6V

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at TA= 25 °C and VIN=12V (unless otherwise noted).

PARAMETER

TEST CONDITIONS

AMS4154

Min.

Typ.

Max.

Units

Feedback Voltage

0.6V ≤ VIN ≤ 32V, VCOMP < 2V

0.588

0.600

0.612

Supply Current

VEN = 5V, VFB = 1.4V

1.0

1.2

Shutdown Supply Current

VEN = 0V

0.5

µA

Current Limit

2.5

3.6

4.9

Current Sense to COMP

Transconductance

3.5

A/V

Oscillation Frequency

280

330

380

KHz

Maximum Duty Cycle

VFB = 1.0V

Minimum Duty Cycle

VFB = 1.5V

EN Threshold Voltage

VEN Rising, Output ON

2.5

2.6

2.8

EN Threshold Voltage

VEN Falling , Output OFF

2.2

2.3

EN Threshold Hysteresis

250

Enable Current

VEN = 0V

1.8

µA

Thermal Shutdown

160

ºC

5V REF Voltage

IREF = 0

4.8

5.0

5.2

REF Load Regulation

∆IREF = 0 to 1mA

100

REF Line Regulation

IREF = 100µA, VIN = 6.5 to 32V

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