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TPS60252RTE

更新时间： 2024-09-13 03:55:43

品牌	Logo	应用领域
德州仪器 - TI		功效泵
页数	文件大小	规格书
25页	891K
描述
HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE

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TPS60252RTE 数据手册

TPS60250

TPS60252

www.ti.com............................................................................................................................................................ SLVS769C–APRIL 2007–REVISED APRIL 2008

HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I²C INTERFACE

FEATURES

•

3.0 V to 6.0 V Input Voltage Range

DESCRIPTION

×1 and ×1.5 Charge Pump

Fully Programmable Current with I²C

The TPS60250/2 are high efficiency, constant

frequency charge pump DC/DC converters that use

dual mode 1× and 1.5× conversions to maximize

efficiency over the input voltage range. The devices

drive up to five white LEDs for the main display and

up to two white LEDs for the sub display with

regulated constant current for uniform intensity. By

utilizing adaptive 1×/1.5× charge pump modes and

very low-dropout current regulators, the TPS60250/2

achieve high efficiency over the full 1-cell

lithium-battery input voltage range.

–

64 Dimming Steps with 25mA Maximum

(Sub and Main Display Banks)

–

4 Dimming Steps with 80mA Maximum

(DM5 for Auxiliary Application)

•

2% Current Matching for Sub LEDs at Light

Load Condition (Each 100µA)

•

750 kHz Charge Pump Frequency

Continuous 230mA Maximum Output Current

Four enable inputs, ENmain, ENsub1, ENsub2, and

ENaux, available through the I²C, are used for simple

on/off controls for the independent main, sub1, sub2,

and DM5 displays, respectively. To lower the

operating current when using one sub display LED,

the devices provide completely separate operation for

the sub display LEDs.

Auto Switching Between ×1 and ×1.5 Mode for

Maximum Efficiency

•

Built-in Soft Start and Current Limit

Open Lamp Detection

16-Pin 3mm x 3mm QFN

TPS60250 (I²C Slave Address: 1110111)

TPS60252 (I²C Slave Address: 1110110)

The TPS60250/2 are available in a 16-pin 3mm x

3mm thin QFN.

APPLICATIONS

Main Display

•

Cellular Phones

PDA, PMP, GPS (Up To 4 Inch LCD Display)

Multidisplay Handheld Devices

DM4 DM3 DM2

DM1

GND

C1-

4 Main LED - 15 mA,

Sub Display

= 3.1 V

C2+

C2-

DS2

C2 C3

1mF 1mF

DS1

DM5

C1+

VIN SCLK

SDAT

VOUT

4.7mF

I²C Interface

On/Off, Digital Dimming

4.7mF

4.5

5.5

3.5

Figure 2. Typical Application for Sub and Main

- Input Voltage - V

Figure 1. Efficiency vs Input Voltage

ORDERING INFORMATION⁽¹⁾

PART NUMBER

PACKAGE

T_A

TPS60250RTE

16-Pin 3 mm × 3 mm QFN (RTE)

–40°C to +85°C

TPS60252RTE

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

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...25

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TPS60252RTE 替代型号

型号	品牌	替代类型	描述	数据表
TPS60252RTERG4	TI	功能相似	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE

与TPS60252RTE相关器件

型号	品牌	获取价格	描述	数据表
TPS60252RTER	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE
TPS60252RTERG4	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE
TPS60252RTET	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE
TPS60252RTETG4	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE
TPS60255	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs DRIVER WITH 1 WIRE INTERFACE
TPS60255RTER	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs DRIVER WITH 1 WIRE INTERFACE
TPS60255RTERG4	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs DRIVER WITH 1 WIRE INTERFACE
TPS60255RTET	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs DRIVER WITH 1 WIRE INTERFACE
TPS60255RTETG4	TI	获取价格	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs DRIVER WITH 1 WIRE INTERFACE
TPS603	ETC	获取价格	PHOTOTRANSISTOR \| NPN \| 20M \| DOME-3.0

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