TPS60230RGTT

更新时间： 2024-11-21 11:06:31

品牌	Logo	应用领域
德州仪器 - TI		泵
页数	文件大小	规格书
15页	374K
描述
采用 3x3 QFN 封装、用于白光 LED 背光的 5 通道、电流调节型 125mA 电荷泵 \| RGT \| 16 \| -40 to 85

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替代型号

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TPS60230RGTT 数据手册

TPS60230

www.ti.com

SLVS516A–MAY 2004–REVISED JUNE 2004

WHITE LED CHARGE PUMP CURRENT SOURCE

WITH PWM BRIGHTNESS CONTROL

FEATURES

DESCRIPTION

•

Regulated Output Current With 0.3%

Matching Over Temperature

The TPS60230 charge pump is optimized for white

LED supplies in backlit color display applications. The

device provides a constant current, set by an external

resistor, for each LED. The supply voltage ranges

from 2.7 V to 6.5 V and is ideally suited for all

applications powered by a single LI-Ion battery cell or

three to four NiCd, NiMH, or Alkaline battery cells.

The TPS60230 provides up to 25 mA per LED, for a

total of 125 mA, for input voltages ranging from 3.1 V

to 6.5 V. High efficiency is achieved by utilizing a

1x/1.5x fractional conversion technique in combi-

nation with very low dropout current sources. Ad-

ditionally, the current controlled charge pump ensures

low input current ripple and EMI. Only two external 1

µF and two 0.47 µF capacitors are required to build a

complete small and low cost power supply solution.

The TP60230 switches at 1 MHz operating frequency

and is available in a small 16-pin QFN (RGT)

package to keep board space to a minimum.

•

Drives up to 5 LEDs at 25 mA Each

LED Brightness Control Through PWM

Control Signal

•

High Efficiency by Fractional Conversion

With 1x and 1.5x Modes

•

1 MHz Switching Frequency

2.7 V to 6.5 V Operating Input Voltage Range

Internal Softstart Limits Inrush Current

Low Input Ripple and Low EMI

Overcurrent and Overtemperature Protected

Undervoltage Lockout With Hysteresis

Ultra-Small 3mm x 3mm QFN Package

APPLICATIONS

•

White LED Backlight for Color Displays in

Cellular Phones, Smart Phones, PDAs,

Handheld PCs, Digital Cameras,

and Camcorders

VIN

VOUT

1 mF

VIN = 2.7 V

to 6.5 V

C1+

0.47 mF

C1−

C2+

C2−

•

Key Backlight

1 mF

EN1

EN2

GND

ISET

PGND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...15

中文翻译

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TPS60230RGTT 替代型号

型号	品牌	替代类型	描述	数据表
TPS60230RGTR	TI	类似代替	WHITE LED CHARGE PUMP CURRENT SOURCE WITH PWM BRIGHTNESS CONTROL

与TPS60230RGTT相关器件

型号	品牌	获取价格	描述	数据表
TPS60231	TI	获取价格	WHITE LED CHARGE PUMP CURRENT SOURCE WITH PWM BRIGHTNESS CONTROL
TPS60231RGTR	TI	获取价格	WHITE LED CHARGE PUMP CURRENT SOURCE WITH PWM BRIGHTNESS CONTROL
TPS60231RGTRG4	TI	获取价格	WHITE LED CHARGE PUMP CURRENT SOURCE WITH PWM BRIGHTNESS CONTROL
TPS60231RGTT	TI	获取价格	WHITE LED CHARGE PUMP CURRENT SOURCE WITH PWM BRIGHTNESS CONTROL
TPS60231RGTTG4	TI	获取价格	WHITE LED CHARGE PUMP CURRENT SOURCE WITH PWM BRIGHTNESS CONTROL
TPS60240	TI	获取价格	170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY
TPS60240DGK	TI	获取价格	170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY
TPS60240DGKR	TI	获取价格	170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY
TPS60240DGKRG4	TI	获取价格	0.012A SWITCHED CAPACITOR REGULATOR, 220kHz SWITCHING FREQ-MAX, PDSO8, GREEN, PLASTIC, MSO
TPS60240DGKT	TI	获取价格	170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY

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