XC9212A093MR datasheet, PDF - EEWORLD Datasheet

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XC9212A093MR: DescriptionSwitching Regulator/Controller; CategoryPower/power management The power supply circuit; File Size92KB，10 Pages; ManufacturerTOREX; Websitehttp://www.torex.co.jp/chinese/; Environmental Compliance

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XC9212A093MR Overview

Switching Regulator/Controller

XC9212A093MR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Objectid	104615658
package instruction	,
Reach Compliance Code	compliant
ECCN code	EAR99
Humidity sensitivity level	1
Peak Reflow Temperature (Celsius)	260

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XC9211/ 9212 Series

Preliminary

P channel Driver Transistor Built-In

Synchronous (N channel Switching Transistor Built-in)

Input Voltage Range

Output Voltage Range

Oscillation Frequency

Output Current

Maximum Duty Ratio

: 1.8V ~ 6.0V

: 0.9V ~ 4.0V

: 300kHz, 600kHz, 900kHz

: 400mA

: 100%

Driver Transistor Built-In Step-Down DC/DC Converters

Synchronous PWM, Non Synchronous PWM/PFM Switchable

November 18, 2002 Ver. 2

Applications

Mobile phones (PDC, GSM, CDMA, IMT2000 etc.)

PDA, Portable communication modem

Portable game

Camera, Digital camera

Cordless phone

Note book computer

PWM/PFM Switching Control (XC9212 : Non Synchronous)

Ceramic Capacitor Compatible

Ultra Small Packages : SOT-25 & USP-6B

General Description

The XC9211/9212 series is a group of synchronous-rectification

type DC/DC converters with a built-in 0.6

Ω

P-channel driver

transistor and N-channel switching transistor, designed to allow

the use of ceramic capacitors. The ICs enable a high efficiency,

stable power supply with an output current of 400 mA to be

configured using only a coil and two capacitors connected

externally.

Minimum operating voltage is 1.8 V. Output voltage is internally

programmable in a range from 0.9 V to 4.0 V in increments of

0.1 V (accuracy:

2.0%). With the built-in oscillator, oscillation

frequency is selectable from 300 kHz, 600 kHz and 900 kHz to

make available the frequency best suited to your particular

application. As for operation mode, the XC9211 series is of a

synchronous-rectified PWM control type, while the XC9212

series can be manually switched between the PWM control

mode with synchronous rectification and the automatic

PWM/PFM switching control mode with non synchronous

rectification, allowing fast response, low ripple and high

efficiency over the full range of load (from light load to high

output current conditions). The soft start and current control

functions are internally optimized. During standby, all circuits

are shutdown to reduce current consumption to as low as 0.5

µA

or less. With the built-in U.V.L.O. (Under Voltage Lock Out)

function, the internal P channel driver transistor is forced OFF

when input voltage becomes 1.6 V or lower. Two types of

packages, 250 mW (SOT-25) and 100 mW (USP-6B), are

available depending on applications.

Features

P ch driver Tr. Built-in

: On resistance 0.6Ω

N ch driver Tr. Built-in : On resistance 0.6Ω (Synchronous)

Output Voltage Range : 0.9V ~ 4.0V (0.1V step)

Fixed output voltage accuracy

±2%

Oscillation Frequency

: 300kHz, 600kHz, 900kHz

Fixed oscillation frequency

accuracy ±15%

Stand-by function

Soft start circuit built-in

Current limiter circuit built-in

: 600mA

: Istb = 0.5µA (max.)

Typical Application Circuit

OUT

(400mA)

Electrical Characteristics

XC9212A186

Output Voltage 1.8V Fixed, FOSC : 600kHz

L=10µH (CDRH4D18)

CIN=4.7µF (Ceramic), CL=10µF (Ceramic)

100

PWM/PFM Automatic Switch (Non-Synchronous)

Efficiency EFFI (%)

(ceramic) 2 V

CE/MODE

3 CE/ V

OUT

MODE

(

)

SD *

(ceramic)

PWM (Synchronous)

3.6V

VIN=2.4

100

1000

CIN

: 10µH (SUMIDA CDRH4D18)

: 10µH (Ceramic)

: 4.7µH (Ceramic)

: CRS02 (TOSHIBA Schottky Diode)

0.1

Output Current I

OUT

(mA)

* SD is externally set up for XC9212 series when used in non-synchronous PWM operation with large current.

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