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XCL205/XCL206/XCL207

Series

■

BLOCK DIAGRAM

■

ABSOLUTE MAXIMUM RATINGS

Ta = 25℃

PARAMETER

SYMBOL

RATINGS

UNITS

- 0.3 ~ 6.5

V

V

- 0.3 ~ 6.5

V

CE/MODE Pin Voltage

- 0.3 ~ 6.5

V

±

1500

mA

Power Dissipation

Pd

1000

*1

mW

Operating Temperature Range

Topr

- 40 ~ + 85

℃

Storage Temperature Range

Tstg

- 40 ~ + 105

℃

●

XCL205A / XCL206A / XCL207A series

NOTE: The XCL205 offers a fixed PWM control, a signal from CE/MODE Control Logic to PWM/PFM Selector is fixed to "L" level inside.

The XCL206 control scheme is PWM/PFM automatic switching, a signal from CE/MODE Control Logic to PWM/PFM Selector is fixed to

"H" level inside. The diodes placed inside are ESD protection diodes and parasitic diodes.

CE/MODE

R2

R1

Error Amp.

Vref with

Soft Start,

CE

Phase

Compensation

PWM/PFM

Selector

Current Feedback

Current Limit

PWM

Comparator

Logic

Synch

Buffer

Drive

R3

R4

UVLO

UVLO Cmp

Ramp Wave

Generator

OSC

Lx

CE/MODE

Control

Logic

VSHORT

FB

CFB

Inductor

L2

L1

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

Please refer to page 16 for details.

●

XCL205B / XCL206B / XCL207B / XCL205C / XCL206C / XCL207C series

CE/MODE

R2

R1

Error Amp.

Vref with

Soft Start,

CE

Phase

Compensation

PWM/PFM

Selector

Current Feedback

Current Limit

PWM

Comparator

Logic

Synch

Buffer

Drive

R3

R4

UVLO

UVLO Cmp

Ramp Wave

Generator

OSC

Lx

CE/MODE

Control

Logic

CE/

VSHORT

FB

CFB

Inductor

L2

L1

NOTE: The XCL205 offers a fixed PWM control, a signal from CE/MODE Control Logic to PWM/PFM Selector is fixed to "L" level inside.

The XCL206 control scheme is PWM/PFM automatic switching, a signal from CE/MODE Control Logic to PWM/PFM Selector is fixed to

"H" level inside. The diodes placed inside are ESD protection diodes and parasitic diodes.