XC9116B02ADR Torex Semiconductor, XC9116B02ADR Datasheet

XC9116B02ADR

Manufacturer Part Number

XC9116B02ADR

Description

Manufacturer

Torex Semiconductor

Datasheets

1.XC9116.pdf (23 pages)

2.XC9116B02ADR.pdf (22 pages)

3.XC9116B02ADR.pdf (22 pages)

Specifications of XC9116B02ADR

Date_code

07+

Packing_info

2520

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XC9116

Step-Up DC/DC Converter-Backlight LED Driver

■GENERAL DESCRIPTION

The XC9116 series is a fixed frequency, constant current step-up DC/DC converter ideal for driving LEDs used in backlighting

applications such as cellular phones, PDAs and digital cameras. Output voltage of up to 17.5V can be derived, therefore, four

white LEDs in series can be driven. Since an LED current can be set by an external resistor when LEDs are in-series

connection, all white LEDs can be turned on equably. A network of two parallel legs with three in each LED can be also

driven. Luminance of the LEDs is controlled by changing the duty cycle of a PWM signal applied to the CE pin. Efficiency is

high with the low feedback reference voltage ensuring the R

ceramic output capacitor (C

The 'B' type of XC9116 has an additional fault detection circuit. If the LEDs are disconnected or damaged, excess or run away

output voltage is prevented by stopping the drive of the internal MOSFET.

■APPLICATIONS

2.5V~6.0V

■TYPICAL APPLICATION CIRCUIT

●For White LED drivers

●Mobile phones, PHS

●PDAs

●Digital still cameras

DSON

VIN

CIN

1uF

of 2.0 Ω is used. A low profile and small board area solution can be achieved using a chip coil and an ultra small

100Hz to

10kHz

VIN

VLF3010A

) of 0.22μF as a result of the high 1.0MHz switching frequency.

L:22uH

Series

VSS

XB0ASB03A1B

10ohm

LED

20mA

LED

0.22uF

losses are minimal. In addition, an internal MOSFET with an

■TYPICAL PERFORMANCE

●XC9116B Type

■FEATURES

Input Voltage Range

Output Voltage Range

Oscillation Frequency

ON Resistance

Efficiency

Control

Standby current

Load Capacitor

Lx Limit Current

Lx Overvoltage Limit

No Lx Overvoltage Limit : XC9116D series

Package

CHARACTERISTICS

: 2.5V ~ 6.0V

: Up to 17.5V externally set-up

: Reference voltage 0.2V +5%

: 1.0MHz, ±20%

: 2.0Ω

: 86% (XC9116B Type)

: 84% (XC9116D Type)

: PWM control

: ISTB=1.0μA (MAX.)

: 0.22μF, ceramic

: 325mA

: XC9116B series

: SOT-25 (SOT-23-5), USP-6B

driving 3 white LEDs in series)

=3.6V, I

LED

ETR0407-002

=20mA when

1/23

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