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XCL201/XCL202

Series

■

BLOCK DIAGRAM

CE/

CE

R2

R1

Error

Amp.

Vref with

Soft Start,

CE

Phase

Compensation

Current Feedback

Current Limit

PWM

Comparator

Logic

Synch

Buffer

Drive

R3

R4

UVLO

UVLO Cmp

Ramp Wave

Generator

OSC

Lx

CE

Control

Logic

VSHORT

FB

CFB

Inductor

L2

L1

PWM/PFM

Selector

■

ABSOLUTE MAXIMUM RATINGS

Ta = 25℃

PARAMETER

SYMBOL

RATINGS

UNITS

- 0.3 ~ 6.5

V

V

- 0.3 ~ 6.5

V

CE Pin Voltage

- 0.3 ~ 6.5

V

±1500

mA

Power Dissipation

Pd

1000

*1

mW

Operating Ambient Temperature

Topr

- 40~ +85

℃

Storage Temperature

Tstg

- 40 ~ +105

℃

●XCL201B / XCL202B Series

NOTE: The XCL201 offers a fixed PWM control, a signal from CE Control Logic to PWM/PFM Selector is fixed to "L" level inside. The

XCL202 control scheme is PWM/PFM automatic switching, a signal from CE Control Logic to PWM/PFM Selector is fixed to "H" level

inside. The diodes placed inside are ESD protection diodes and parasitic diodes.

*1: The power dissipation figure shown is PCB mounted (40mm×40mm, t=1.6mm, Glass Epoxy FR-4).

Please refer to page 12 for details.