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Rev.2.1 Oct.04, 2019

AX3050/A



FEATURES

- Input Voltage：8V to 34V

- Vout Accuracy (VFB=1V) ±2%

- CC/CV mode(Constant Current and Constant Voltage)

- Up to 2.3A output current

- ±5%/±15% Current limit Accuracy

- Duty ratio：0% to 90% PWM control

- Oscillation frequency：

AX3050: 100KHz

AX3050A: 250KHz

- Thermal Shutdown function.

- Short Circuit Protect (SCP).

- Built-in internal LX N-channel MOS.

- Current mode non-synchronous PWM converter

- External current limit setting.

- Over Voltage Protection 5.8V.

- Built in adjustable line-compensation.

- SOP-8L-EP Pb-Free packages

- RoHS and Halogen free compliance.



BLOCK DIAGRAM

-

+

-

+

-

+

-

S

R

Q

Q

+

FB



1V

1.5V

INTERNAL

REGULATORS

IN

5V

IN

5V

BS

LX

GND

M1

0.15Ω

M2

5Ω

RAMP

CLK

CURRENT

SENSE

AMPLIFIER

CURRENT

COMPARATOR

SHUTDOWN

COMPARATOR

ERROR

AMPLIFIER

OSCILLATOR

100KHz/250KHz

7V

Zener

COMP

+

-

CURRENT

Limit

AMPLIFIER

SENSE1

SENSE2

OVP