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Rev.1.4 Oct.16, 2019

AX3304/A



ABSOLUTE MAXIMUM RATINGS (at TA = 25°C)

Characteristics

Symbol

Rating

Unit

VCC Pin Voltage

VCC

GND - 0.3 to GND + 45

V

VGATE, VSENSE Pin Voltage

GND - 0.3 to VIN

V

Feedback, OVP, 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

-20 to +125

°C

Operating Supply Voltage

VOP

+8 to +40

V

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 1.02

V

Under Voltage Lockout

UVLO

Rise

-

6

-

V

UVLO Hysteresis

-

-

1.65

-

V

OVP detect voltage

VOVP

Internal define

1.20 1.23 1.26

V

Line Regulation

-

VIN=10 ~ 40V, IOUT=10mA

-

0.2 0.5

%

Load Regulation

-

IOUT=0~3A,

RSENSE = 33mΩ AX3304/A

-

0.5

1

%

Quiescent Current

ICCQ

VFB = 1.5V, force driver off.

-

4

8

mA

Oscillator frequency

FOSC

IOUT = 0.5A

AX3304

70 100 130 KHz

AX3304A

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

-

%

Sense Voltage

VCC-VSENSE

-

115

-

mV

EN/CT pin logic input

threshold voltage

VEN1

Shutdown mode

-

-

0.4

V

VCT

Auto restart, VFB<0.4V

0.5

-

1.5

V

EN/CT pin current

IEN/CT-C Charge current

-

-30 -

uA

EN/CT pin current

IEN/CT-D Discharge current

-

1.3 -

uA

Thermal shutdown Temp

TSD

-

160

-

°C

Thermal

Shutdown Hysteresis

TSH

-

50

-

°C