PWM, PWM/PFM Switchable Step-Down DC/DC Converters with Driver Transistor Built-In

Note ) The signal from CE/MODE Control Logic to PWM/PFM Selector is being fixed to "L" level inside, and XC9206 series chooses PWM control.

The signal from CE/MODE Control Logic to PWM/PFM Selector is being fixed to "H" level inside, and XC9207 series chooses only

PWM/PFM automatic switching control.

Ta = 25

XC9206 / 9207/ 9208 Series

V

V

V

VIN

VLx

VOUT

- 0.3 ~ + 6.5

Storage Temperature Range

Pd

mW

V

mA

Tstg

- 40 ~ + 85

- 55 ~ + 125

250

- 0.3 ~ + 6.5

ILx

± 1000

Topr

CE / MODE Pin Voltage

Lx Pin Current

Operating Temperature Range

Continuous Power Dissipation

PARAMETER

SYMBOL

RATINGS

UNITS

VIN Pin Voltage

Lx Pin Voltage

VOUT Pin Voltage

VCE

Semiconductor Ltd.

Current

Limit & Feedback

Buffer

Driver

Logic

Ramp Wave

Generator,

OSC

Phase

Compensation

CE/MODE

Control

Logic

Vref with

Soft Start,

CE

PWM/PFM

Selector

U.V.L.O

PWM

Comparator

Error Amp.

U.V.L.O Comp.

Pch

Driver

Tr.

LX

CE/MODE

VSS

VOUT

VIN

R2

R1

Data Sheet

4