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

Rev.1.5 Oct.15, 2019

AX3117



ABSOLUTE MAXIMUM RATINGS (at TA = 25°C)

Characteristics

Symbol

Rating

Unit

VIN Pin Voltage

VIN

GND - 0.3 to GND + 45

V

Feedback Pin Voltage

VFB

GND - 0.3 to VIN

V

SENSE1/2, EN/CT Pin Voltage

GND - 0.3 to 6

V

Switch Pin Voltage

VSW

GND - 0.3 to VIN + 0.3

V

Power Dissipation

PD

(TJ – TA)/θJA

W

Storage Temperature Range

TST

-40 to +165

°C

Operating Temperature Range

TOP

-30 to +130

°C

Operating Supply Voltage

VOP

+7.5 to +40

V

Output Current

IOUT

0 to 3

A

Thermal Resistance from Junction to case

θJC

15

°C/W

Thermal Resistance from Junction to ambient

θJA

40

°C/W

Note : θJA is measured with the PCB copper are (need connect to Exposed pad) of approximately 1 in2(Multi-layer).



ELECTRICAL CHARACTERISTICS

(VIN=12V, TA=25°C, unless otherwise specified)

Characteristics

Symbol

Conditions

Min Typ Max Units

Feedback Voltage

VFB IOUT=10mA

0.98 1.00 1.02

V

Under Voltage Lockout

UVLO Falling

-

5.8

-

V

UVLO Hysteresis

-

-

1.6

-

V

OVP detect voltage

VOVP Internal define

-

6

-

V

Line Regulation

-

VIN=10 ~ 40V, IOUT=10mA

-

0.5

1

%

Load Regulation

-

IOUT=0~2A,

RSENSE = 50mΩ

AX31117/A

+270 +320 +370

mV

AX3117B

+100 +150 +200

Quiescent Current

ICCQ VFB = 1.5V, force driver off.

-

5

8

mA

Oscillator frequency

FOSC IOUT = 0.5A

AX3117/B

70 100 130 KHz

AX3117A

240 300 360 KHz

Max. Duty Cycle (ON)

DC

Force driver on VFB = 0.6V

-

100

-

%

Min. Duty Cycle (OFF)

Force driver off VFB = 1.5V

-

0

-

%

Internal MOSFET RDSON

RDSON VIN=12V, IOUT = 2A

-

100 150 mΩ

Sense Voltage

VSENSE VSENSE1-VSENSE2

130 140 150 mV

Sense Voltage Hysteresis

VSENSE-h

-

50

-

mV

EN/CT pin logic input

threshold voltage

VEN Shutdown mode

-

0.3

V

VCT Auto restart, VFB<0.4V

0.5

-

1.5

EN/CT pin current

IEN/CT-C Charge current

-

-26

-

uA

EN/CT pin current

IEN/CT-D Discharge current

-

1.8

-

uA

Thermal shutdown Temp

TSD

-

150

-

°C

Thermal Shutdown

Hysteresis

TSH

-

40

-

°C