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Axelite Confidential Materials, do not copy or distribute without written consent.

Rev.1.3 Nov.26, 2019

AX3518



ELECTRICAL CHARACTERISTICS

(VIN = VEN=3.3V, TA =25°C, unless otherwise specified)

Characteristics

Symbol

Conditions

Min

Typ

Max Units

Supply Voltage Range

VIN

2.8

-

5.5

V

Feedback Voltage

VFB

0.784 0.800 0.816

V

Feedback Bias Current

IFB

VFB = 0.85V

-

-

±30

nA

REF Voltage

VREF

IREF=0, VIN=2.8V to 5.5V

-

0.8

-

V

Quiescent Current

ICCQ

VFB = 1V

-

250

400

uA

Shutdown Supply Current

ISD

VEN =0V

-

4

10

uA

Switching Current Limit

ILIMIT

3.5

4

-

A

Line Regulation

△ VOUT/VOUT VIN = 3V~5.5V

-

0.04

0.4

%/V

Load Regulation

△ VOUT/VOUT IOUT = 0.01 to 3A

-

0.5

1

%

Oscillation Frequency

FOSC

SW pin

0.8

1

1.2 MHz

R

DS(ON) of P-CH MOSFET

RDSON

VFB=0V, IOUT=1A

-

100

-

mΩ

R

DS(ON) of N-CH MOSFET

RDSON

(Note1)

-

80

-

mΩ

EN pin logic input threshold

voltage

VENL

-

-

0.4

V

VENH

1.5

-

-

EN Pin Input Current

IENH

VEN=VIN

-

±0.1

±1

uA

IENL

VEN=0V

-

4

8

uA

Efficiency

EFFI

VIN=5V,

VOUT=3.3V,IOUT=2A

-

92

-

%

Thermal Shutdown

TSD

-

150

-

°C

Thermal Shutdown

Hysteresis

TSH

-

40

-

°C

Note1: Guaranteed by design.