4/11

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

Rev.1.4 Mar. 06, 2015

AX3112/A



ELECTRICAL CHARACTERISTICS (VCC=12V, TA=25°C, unless otherwise specified)

Characteristics

Symbol

Conditions

Min Typ Max Units

FB

VFB

IOUT=10mA

1.08 1.10 1.12

V

Under Voltage Lockout

UVLO Falling

-

6

-

V

UVLO Hysteresis

-

-

0.8

-

V

OVP detect voltage

VOVP FB floating

-

1.250

-

V

Line Regulation

-

VCC=10 ~ 40V

-

0.5

1

%

Load Regulation

-

IOUT=0 ~ 1A,

RSENSE = 140mΩ

-

0.3 0.6% mV

Quiescent Current

ICCQ VFB > 1.2V

-

3

6

mA

Oscillator frequency

FOSC

AX3112

80

100 120

KHz

AX3112A

280 350 420

Max. Duty Cycle (ON)

DC

Force driver on

VFB = 0.7V

-

100

-

%

Min. Duty Cycle (OFF)

Force driver off

VFB = 1.2V

-

0

-

Internal MOSFET RDSON

RDSON

VCC=12V, VFB = 0.7V

-

110

170

mΩ

Sense Voltage (BIN1)

VSENSE VSENSE1-VSENSE2

119

125 140

mV

Sense Voltage (BIN2)

VSENSE VSENSE1-VSENSE2

110

125 140

mV

Sense Voltage Hysteresis

VSENSE-h

-

45

-

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

-

-32

-

uA

EN/CT pin current

IEN/CT-D Discharge current

-

1.5

-

uA

Thermal shutdown Temp

TSD

-

160

-

°C

Thermal Shutdown Hysteresis

TSH

-

40

-

°C