Datasheet > LM3631YFFR

LM3631YFFR

更新时间： 2024-11-05 11:09:35

品牌	Logo	应用领域
德州仪器 - TI		驱动驱动器
页数	文件大小	规格书
56页	1547K
描述
适用于 LCD 面板的集成式 WLED 背光驱动器和偏置电源 \| YFF \| 24 \| -40 to 85

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LM3631

SNVS834 –AUGUST 2014

LM3631 Complete LCD Backlight and Bias Power

1 Features

2 Applications

Mobile Device LCD Backlighting and Bias

•

Drives up to Two Strings with Maximum of Eight

LEDs in Series

3 Description

–

Integrated Backlight Boost with 29-V Maximum

Output Voltage

The LM3631 is a complete LCD backlight and bias

power solution for mobile devices. This one-chip

solution has an integrated high-efficiency backlight

LED driver and positive/negative bias supplies for

LCD drivers addressing the power requirements of

high-definition LCDs. Integrated solution allows small

solution size while still maintaining high performance.

–

Two Low-Side Constant-Current LED Drivers

with 25-mA Maximum Output Current

•

Backlight Efficiency Up to 90%

11-Bit Linear or Exponential Dimming with up to

17-Bit Output Resolution

Capable of driving up to 16 LEDs, the LM3631 is

ideal for small- to medium-size displays. Two

additional programmable LDO regulator outputs can

be used to power display controller, LCD gamma

reference, or any additional peripherals.

•

External PWM Input for CABC Backlight

Operation

•

LCD Bias Efficiency > 85%

Programmable Positive LCD bias, 4-V to 6-V,

100-mA Maximum Output Current

A high level of integration and programmability allows

the LM3631 to address a variety of applications

without the need for hardware changes. Voltage

levels, backlight configuration, and power sequences

are all configurable through I²C interface.

•

Programmable Negative LCD bias, –4-V to –6-V,

80-mA Maximum Output Current

Two Positive Programmable LDO Reference

Outputs

–

4-V to 6-V, 50-mA Maximum Output Current

Device Information⁽¹⁾

1.8-V to 3.3-V, 80-mA Maximum Output

Current

PART NUMBER

PACKAGE

BODY SIZE (MAX)

LM3631

DSBGA (24)

2.585 mm x 1.885 mm

•

2.7-V to 5-V Input Voltage Range

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Simplified Schematic

Backlight Efficiency, 2P6S

L_SW

C_IN

Up to 8 LEDs / string

C_OUT

V_IN

VOUT

LED1

VIN

BST_SW

L_BST

LED2

C_IN

SDA

C_FLY

SCL

LM3631

nRST

BST_OUT

CP_VNEG

LDO_OREF

LDO_VPOS

LDO_CONT

V_NEG(-5.4V)

LCD_EN

PWM

VIN 2.7V

VIN 3.7V

VIN 5.0V

V_OREF(+4.0V to +6.0V)

V_POS(+5.4V)

OTP_SEL

FLAG

V_CONT(+1.8V)

Load (mA)

D007

GND_BST_SW

AGND

GND_SW

PGND

C_VPOS

C_NEGC_BST

C_OREF

C_CONT

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...56

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与LM3631YFFR相关器件

型号	品牌	获取价格	描述	数据表
LM3632A	TI	获取价格	具有偏置电源和 1.5A LED 闪光灯驱动器的单芯片背光
LM3632AYFFR	TI	获取价格	具有偏置电源和 1.5A LED 闪光灯驱动器的单芯片背光 \| YFF \| 30 \| -4
LM3633	TI	获取价格	适用于智能手机的完整照明电源解决方案
LM3633YFQR	TI	获取价格	适用于智能手机的完整照明电源解决方案 \| YFQ \| 20 \| -40 to 85
LM3639A	TI	获取价格	LM3639A Single Chip 40V Backlight 1.5A Flash LED Driver
LM3639AYFQR	TI	获取价格	LM3639A 单芯片 40V 背光 + 1.5A LED 闪光灯驱动器 \| YFQ \|
LM3639AYFQT	TI	获取价格	LM3639A 单芯片 40V 背光 + 1.5A LED 闪光灯驱动器 \| YFQ \|
LM363AD	NSC	获取价格	IC,INSTRUMENTATION AMPLIFIER,SINGLE,BIPOLAR,DIP,16PIN,CERAMIC
LM363AD/A+	TI	获取价格	IC,INSTRUMENTATION AMPLIFIER,SINGLE,BIPOLAR,DIP,16PIN,CERAMIC
LM363AH10	NSC	获取价格	IC,INSTRUMENTATION AMPLIFIER,SINGLE,BIPOLAR,CAN,8PIN,METAL

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