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

Rev.1.4 Oct.04, 2019

AX3015



ELECTRICAL CHARACTERISTICS (COUNTINOUS)

(Unless otherwise specified, TA=25°C, VCC=12V, VOUT=5V, IOUT = 0.2A)

Characteristics

Symbol

Conditions

Min Typ Max Units

EN/CT pin logic input

threshold voltage

VEN1 Shutdown mode

-

-

0.3

V

VCT Auto restart, VFB<0.4V

0.5

-

1.5

VEN2 Operating mode

1.6

-

-

EN/CT pin current

IEN/CT Charge current

-

-30

-

uA

EN/CT pin current

IEN/CT Discharge current

-

1.3

-

uA

Thermal shutdown Temp

TSD

-

160

-

°C

Thermal Shutdown Hysteresis

TSH

-

45

-

°C



APPLICATION CIRCUIT

C2

0.1uF

D1

B240A

L1

1

2

C3

470uF

C1

470uF

U1

Vcc

SW

FB

EN/CT

SENSE2

VOUT=5.0V/1A

VIN=10~30V

C4

0.1uF

R2

8.2K

R1

30K

RSENSE

Vss

OVP

C6

0.1uF

1

3

5

4

2

7

6

8

C5

SENSE1

R4

R3

AX3015

0.1R

C7

3.9nF

10nF

VOUT = VFB

(1 +

R2

R1

), VFB = 1.08V, R2 = 5K ~ 15K

VOUT (OVP) = VOVP

(1 +

R2

R1

), VFB = 1.25V, R4 = 5K ~ 15K



FUNCTION DESCRIPTIONS

FB

Sense the regulated output voltage to complete the feedback loop, moreover, the

external OVP and SCP sense voltage. If VFB >1.25V, the OVP is happened that it can

turn-off the driver, when VFB <0.4V and VEN/CT≧0.4V, the SCP is happened that it can auto

restart driver.

SENSE1/2

The current limit sense pin, if VSENSE1-VSENSE2≧140mV, the over current is happened

that it can turn-off driver cycle by cycle.