Datasheet > SLVS155A

SLVS155A

更新时间： 2022-04-12 14:50:05

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
19页	440K
描述
ADJUSTABLE INVERTING DC/DC CONVERTER

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SLVS155A 数据手册

TPS6755

ADJUSTABLE INVERTING DC/DC CONVERTER

SLVS155A – NOVEMBER 1996 REVISED DECEMBER 1996

D OR P PACKAGE

(TOP VIEW)

1-W Output (V

≥ 4.5 V)

2.7-V to 9-V Input Operating Range

78% Typical Efficiency

REF

OUT

GND

160-kHz Fixed-Frequency Current-Mode

PWM Controller

COMP

EN Input Inhibits Operation and Reduces

Supply Current to 1 µA

Output Voltage Limited to V ≤ 12 V– V

Soft Start

8-Pin SOIC and DIP Packages

–40°C to 85°C Free-Air Temperature Range

Pin-for-Pin Compatible with MAX755

description

The TPS6755 is an adjustable inverting dc/dc converter capable of operating from inputs as low as 2.7 V. The

onlyexternalcomponentsrequiredareaninductor, anoutputfiltercapacitor, aninputfiltercapacitor, areference

filter capacitor, two resistors, and a Schottky rectifier. An enable input is provided to shut down the inverter when

an output voltage is not needed. The typical supply current is 1.9 mA at no-load and is further reduced to 1-µA

when the enable input is low.

The device features a 160-kHz current-mode pulse-width-modulation (PWM) controller with a p-channel

MOSFET power switch. The gate drive uses the converter output to reduce the die area needed to realize the

0.4-Ω MOSFET. Soft start is accomplished with the addition of one small capacitor at SS. A 1.22-V reference

is available for external loads up to 125 µA.

The TPS6755 is attractive for board-level dc/dc conversion in computer peripherals and in battery-powered

equipment requiring high efficiency and low supply current.

Available in an 8-pin DIP or an 8-pin SOIC package, the TPS6755 operates over a free-air temperature range

of –40°C to 85°C.

2.7 V to 9 V

47 µF

TPS6755

ENABLE

1N5817

1 µF

OUT

– 5 V

REF

10 µF

100 µF

GND

10 µH

COMP

10.2 kΩ

82 pF

†

42.2 kΩ

Not required for loads of 100 mA or less

†

Figure 1. Typical Circuit

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 Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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