CAT3649: LED Driver, 6-Channel, with 32 Dimming Levels and PWM _ BDTIC 中国领先电子元器件代理商

CAT3649: LED Driver, 6-Channel, with 32 Dimming Levels and PWM

The CAT3649 is a high efficiency fractional charge pump that can drive up to six LEDs. The inclusion of a 1.33x fractional charge pump mode increases the device efficiency by up to 10% over traditional 1.5x charge pumps with no added external capacitors.Low noise input ripple is achieved by operating at a constant switching frequency which allows the use of small external ceramic capacitors. The multi-fractional charge pump supports a wide range of input voltages from 2.4 V to 5.5 V.The LED current can be adjusted in different ways. The full-scale LED current is set to 25 mA once the device is enabled. Analog dimming in 32 linear steps is achieved via a 1-wire pulse-dimming input (ADIM). Further adjustment of the LED current can be done by applying a pulse width modulation (PWM) signal on the PWM input. The PWM dimming control is compatible with content adaptive brightness control (CABC) for a wide range of PWM signal frequency up to 200 kHz.The CAT3649 can be shut down by holding the ADIM or PWM input in a logic low condition for greater than 30 ms.

CAT3649: LED Driver, 6-Channel, with 32 Dimming Levels and PWM

特性

High Efficiency 1.33x Charge Pump
Drives up to 6 LEDs at 25 mA Each
PWM Dimming 100 Hz to 200 kHz for CABC
Quad-mode Charge Pump: 1x, 1.33x, 1.5x, 2x
1-wire EZDimTM 32 Linear Steps (ADIM)
Power Efficiency up to 92%
Low Noise Input Ripple in All Modes
Zero Current Shutdown Mode
Soft Start and Current Limiting
Short Circuit Protection
Thermal Shutdown Protection

优势

Highest efficiency charge pump.
Compatible with larger size LCD used in smartphones.
PWM dimming control compatible with content adaptive brightness control (CABC).

应用

LCD Display Backlight

终端产品

Mobile Phones
Digital Still Cameras

软件 (1)

Document Title	Document ID/Size	Revision	Revision Date
CAT3649AGEVB Software	CAT3649AGEVB_SOFTWARE.ZIP (2888.0kB)	0

封装图纸 (1)

Document Title	Document ID/Size	Revision
TQFN16, 3x3	510AD (55.6kB)	A

数据表 (1)

Document Title	Document ID/Size	Revision	Revision Date
LED Driver , 6-Channel, with 32 Dimming Levels and PWM	CAT3649/D (303kB)	3	Aug, 2014

评估板文档 (5)

Document Title	Document ID/Size	Revision
CAT3649AGEVB Bill of Materials ROHS Compliant	CAT3649AGEVB_BOM_ROHS.PDF (150.0kB)	0
CAT3649AGEVB Gerber Layout Files (Zip Format)	CAT3649AGEVB_GERBER.ZIP (79.0kB)	2
CAT3649AGEVB Manual	EVBUM2164/D (521.0kB)	1
CAT3649AGEVB Schematic	CAT3649AGEVB_SCHEMATIC.PDF (251.0kB)	0
CAT3649AGEVB Test Procedure	CAT3649AGEVB_TEST_PROCEDURE.PDF (116.0kB)	0

评估板与开发工具

产品	状况	Compliance	简短说明
CAT3649AGEVB	Active	Pb-free	High Efficiency Quad-Mode Fractional Charge Pump Evaluation Board

产品订购型号

产品	状况	Compliance	封装		MSL*	容器		预算价格 (1千个数量的单价）
CAT3649HV3-GT2	Active	Pb-free Halide free	TQFN-16	510AD	1	Tape and Reel	2000	$0.6667

订购产品技术参数

Product	Topology	VIN Min (V)	VIN Max (V)	VO Max (V)	IO Max (mA)	fSW Typ (kHz)
CAT3649HV3-GT2	Charge Pump	2.4	5.5	6	25	1000

Datasheet: LED Driver , 6-Channel, with 32 Dimming Levels and PWM (303kB) CAT3649









Other: TQFN16, 3x3 CAT3661; CAT3649; CAT3649AGEVB BOM ROHS CAT3649AGEVB; CAT3649AGEVB GERBER CAT3649AGEVB; CAT3649AGEVB SCHEMATIC CAT3649AGEVB; CAT3649AGEVB SOFTWARE CAT3649AGEVB; CAT3649AGEVB TEST PROCEDURE CAT3649AGEVB; EVBUM2164/D - 521 CAT3649AGEVB