Name: LED Driver, Charge Pump, 6-Channel
Brand: LED Driver, Charge Pump, 6-Channel
SKU: CAT3606

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LED Driver, Charge Pump, 6-Channel

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Datasheet

CAD Model

Overview

The CAT3606 controls up to four LEDs for the main display and two LEDs for the sub-display in cellular phones. The device is capable of operating in either 1x (LDO) mode or 1.5x charge pump mode. All LED pin currents are regulated and tightly matched to achieve uniformity of brightness across the LCD backlight. An external resistor (R_SET) sets the nominal output current.

The device can deliver as much as 20 mA per channel during low voltage operation (3 V), and 30 mA per channel during nominal operation (3.3 V). A constant high-frequency switching scheme (1MHz) provides low noise and allows the use of very small value ceramic capacitors.

A 'zero' quiescent current mode can be achieved via the chip enable pin EN. The Main and Sub LEDs each have their own dedicated ON/OFF control pins (ENM, ENS). Dimming can be achieved using either a DC voltage to control the R_SET pin current, or by applying a PWM signal on the ENM and ENS pins

Applications

Color LCD and keypad Backlighting

End 蜜豆视频

Portable MP3 Players
Digital Cameras
Mobile Phones

Features

Drives up to 4 main LEDs and 2 sub LEDs
Separate control for main and sub LEDs
Compatible with supply voltage of 3 V to 5.5 V
Power efficiency up to 90%
Output current up to 30mA per LED
High-frequency Operation at 1 MHz
2 modes of operation 1x and 1.5x
White LED detect circuitry on all channels
Shutdown current less than 1 µA
Small ceramic capacitors
Soft start and current limiting
Short circuit protection

Material Composition

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V_I Max (V)

I_O Max (mA)

LEDs in Series, Max #

LEDs in Parallel, Max #

Reference Price

CAT3606HV4-T2

Obsolete

TQFN-16

510AE

260

REEL

2000

5.5

180

Price N/A

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Linear LED Drivers | CAT3606

LED Driver, Charge Pump, 6-Channel

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