XC9210B093KR Torex Semiconductor, XC9210B093KR Datasheet

XC9210B093KR

Manufacturer Part Number

XC9210B093KR

Description

Manufacturer

Torex Semiconductor

Datasheets

1.XC9210B093KR.pdf (12 pages)

2.XC9210B093KR.pdf (32 pages)

Specifications of XC9210B093KR

Date_code

03+

Packing_info

sop8

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

XC9210B093KR

Manufacturer:

TOREX

Quantity:

20 000

Current page: 1 of 12
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XC9210

Synchronous Step-Down DC / DC Controller ICs

■GENERAL DESCRIPTION

The XC9210 is a synchronous PWM, PWM/PFM controller designed for low voltage step-down DC/DC converter applications.

High efficiency is obtained through the use of a synchronous rectification topology. Efficiencies are maximized by using the low

RDSon N-Channel MOSFET switch which replaces the catch diode used in standard buck circuits.

The operation of the XC9210 series can be switched between PWM and PWM/PFM externally using the MODE pin. In

PWM/PFM mode the XC9210 automatically switches from PWM to PFM during light loads and high efficiencies can be

achieved over a wide range of load conditions.

Output noise is reduced in PWM operation as the frequency is fixed.

The XC9210 has an 0.9V (±2.0%) internal voltage, and using externally connected components, the output voltage can be set freely

between 0.9V to 6.0V.

components can also be used.

Soft-start time is internally set to 10msec offering protection against in-rush currents during start-up and preventing voltage overshoot.

■APPLICATIONS

●PDAs

●Palmtop computers

●Portable audios

●Various power supplies

■TYPICAL APPLICATION CIRCUIT

:3.3V~10V

PWM

Tr1:Pch MOSFET

:CPH3308

EXT1

VDD

PWM

:47μF

With an internal switching frequency of 300kHz and 180kHz (custom) smaller, low cost external

MODE

EXT2

GND

Series

Tr2:Nch MOSFET

:CPH3408

:62pF

CFB

CDRH125

L:22μH

MODE

:200kΩ

:75kΩ

RFB1

RFB

47μFX2

CL:

OUT

:3.3V

■TYPICAL PERFORMANCE

■FEATURES

Input Voltage Range

Output Voltage Range

Oscillation Frequency

Output Current

Stand-By Function

Soft-start internally set-up : 10 ms (internally set-up)

Synchronous Step-Down DC/DC Controllers

Maximum Duty Cycle

PWM and PWM/PFM Externally Selectable

Synchronous Rectification Control

High Efficiency

Package

CHARACERISTICS

Efficiency vs. Output Current

: 2.0V ~ 10V

: 0.9V ~ 6.0V

: 300kHz ±15%

: More than 2A

: 3.0μA (MAX.)

: 100% (TYP.)

: 95% (TYP.)

: MSOP-8A

Can be set freely with 0.9V

(±2.0%) of reference

(180kHz as custom)

☆GO-Compatible

= 5.0V, V

OUT

ETR0504_001

=3.3V)

1/12

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