ABSOLUTE MAXIMUM RATING

Parameter

Value

Input Voltage Range

-0.3V-42V

Max Operating Junction Temperature(Tj)

150

°C

SW, EN Voltage

–0.3V to VIN+0.3V

BST Voltage

–0.3V to SW+6V

FB Voltage

–0.3V to 6V

SW to ground curren

Internally limited

Operating Temperature(To)

-40

°C –85°C

Package Thermal Resistance (

θjc)

SOT23-6

110

°C / W

Storage Temperature(Ts)

-55

°C - 150°C

Note: Exceed these limits to damage to the device. Exposure to absolute maximum

rating conditions may affect device reliability.

ELECTRICAL CHARACTERISTICS

(VIN = 12V, unless otherwise specified. Typical values are at TA = 25

°C .)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Standoff Voltage

42

V

Input Voltage Range

4

38

V

Input UVLO

Rising, Hysteresis=140mV

3.80

V

Input OVP

Rising, Hysteresis=1.3V

38

V

Input Supply Current

VFB =0.85V

0.6

mA

Input Shutdown Current

6

μA

FB Feedback Voltage

0.800

V

FB Input Current

0.01

μA

Switching Frequency

660

KHz

Maximum Duty Cycle

90

%

FoldBack Frequency

VFB = 0V

60

KHz

High side Switch On Resistance

ISW =200mA

400

mΩ

High side Switch Current Limit

1.2

A

SW Leakage Current

VIN=12V,VSW=0, EN= GND

10

μA

EN Input Current

VIN=12V ,VEN =5V

1

5

μA

EN Input Low Voltage

Rising, Hysteresis=100mV

0.8

1.1

1.4

V

Thermal Shutdown

Hysteresis=40°C

150

°C

LESHAN RADIO COMPANY, LTD.

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