XC9260B31DER-G datasheet(1/28 Pages) TOREX

Part #	XC9260B31DER-G

Description	COT Control, 1.5A Synchronous Step-Down DC/DC Converters

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Manufacturer	TOREX [Torex Semiconductor]

Direct Link	http://www.torex.co.jp

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XC9260/XC9261Series

COT Control, 1.5A Synchronous Step-Down DC/DC Converters

■

GENERAL DESCRIPTION

The XC9260/XC9261 series is a group of synchronous-rectification type DC/DC converters with a built-in P-channel MOS driver

transistor and N-channel MOS switching transistor, designed to allow the use of ceramic capacitors. Output voltage is internally

set in a range from 0.8V to 3.6V (accuracy: ±2.0%) increments of 0.05V. The device provides a high efficiency, stable power

supply with an output current of 1.5A to be configured using only a coil and two capacitors connected externally. Oscillation

frequency is set to 1.2MHz or 3.0MHz can be selected for suiting to your particular application.

As for operation mode HiSAT-COT

(*) control excellent in transient response, the XC9260 series is PWM control, the XC9261

series is automatic PWM/PFM switching control, allowing fast response, low ripple and high efficiency over the full range of loads

(from light load to heavy load).

During stand-by, all circuits are shutdown to reduce current consumption to as low as 1.0μA or less. As for the soft-start function

as fast as 0.3ms in typical for quick turn-on. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel MOS

driver transistor is forced OFF when input voltage becomes 2.00V or lower. The B types integrate CL High Speed discharge

function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge.

Two types of package SOT-89-5, USP-6C are available.

(*) HiSAT-COT is an original Torex term for High Speed Transient Response.

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APPLICATIONS

●

Mobile phones

●

Bluetooth headsets

●

Smart phones, Personal digital assistance

●

Portable game consoles

●

Digital still cameras, Camcorders

●

Codeless phones

●

Point-of-Load (POL)

■

TYPICAL APPLICATION CIRCUIT

ETR05042-001

☆

GreenOperation-compatible

■

TYPICAL PERFORMANCE

CHARACTERISTICS

■

FEATURES

Input Voltage Range

: 2.7V～5.5V

Output Voltage Range

: 0.8V～3.6V (±2.0%)

Quiescent Current

: 25μA (fOSC=3.0MHz)

Output Current

: 1.5A

Oscillation Frequency

: 1.2MHz, 3.0MHz

Efficiency

:

90%

(VIN=3.7V, VOUT=1.8V, IOUT=200mA)

Control Methods

: HiSAT-COT Control

: 100% Duty Cycle

: PWM Control (XC9260)

: PWM/PFM Auto (XC9261)

Protection Circuits

: Thermal Shutdown

: Current Limit (Pendent character)

: Short Circuit Protection (Type B)

Functions

: Soft-Start

: UVLO

: CL High Speed Discharge (Type B)

Capacitor

: Ceramic Capacitor

Operating Ambient Temperature

:- 40℃ ～ + 105℃

Packages

: SOT-89-5, USP-6C

Environmentally Friendly

: EU RoHS Compliant, Pb Free

1.5A

Lx

VOUT

VIN

CE

VOUT

VIN

CE

L

AGND

PGND

CIN

CL

XC9260A18D / XC9261A18D

0

10

20

30

40

50

60

70

80

90

100

0.1

1

10

100

1000

10000

Output Current: I

OUT (mA)

XC9261

XC9260

L = LQM2MPN1R0MGH(1.0μH)

C

IN=10μ F(GRM155R61A106M) CL=10μ F(GRM155R61A106M)

VIN = 5.0V

VIN = 3.7V

VIN = 5.0V

VIN = 3.7V

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XC9260B31DER-G Datasheet(PDF) 1 Page - Torex Semiconductor

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