Datasheet > TC110

TC110

更新时间： 2024-11-09 22:42:27

品牌	Logo	应用领域
美国微芯 - MICROCHIP		控制器
页数	文件大小	规格书
16页	466K
描述
PFM/PWM Step-Up DC/DC Controller

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TC110 数据手册

TC110

PFM/PWM Step-Up DC/DC Controller

Features

General Description

• Assured Start-up at 0.9V

The TC110 is a step-up (Boost) switching controller

that furnishes output currents of up to 300mA while

delivering a typical efficiency of 84%. The TC110

normally operates in pulse width modulation mode

(PWM), but automatically switches to pulse frequency

modulation (PFM) at low output loads for greater

efficiency. Supply current draw for the 100kHz version

is typically only 50µA, and is reduced to less than

0.5µA when the SHDN input is brought low. Regulator

operation is suspended during shutdown. The TC110

accepts input voltages from 2.0V to 10.0V, with a

guaranteed start-up voltage of 0.9V.

• 50µA (Typ) Supply Current (f

• 300mA Output Current @ V ≥ 2.7V

• 0.5µA Shutdown Mode

• 100kHz and 300kHz Switching Frequency

Options

= 100kHz)

OSC

• Programmable Soft-Start

• 84% Typical Efficiency

• Small Package: 5-Pin SOT-23A

Applications

The TC110 is available in a small 5-Pin SOT-23A

package, occupies minimum board space and uses

small external components (the 300kHz version allows

for less than 5mm surface-mount magnetics).

• Palmtops

• Battery-Operated Systems

• Positive LCD Bias Generators

• Portable Communicators

Functional Block Diagram

Device Selection Table

Battery

10µF

IN5817

47µH

Output

Voltage

(V)*

Osc.

Freq.

(kHz)

Operating

Temp.

Range

–

Part

Number

Package

OUT

Si9410DY

47µF

Tantalum

TC110501ECT

TC110331ECT

TC110301ECT

TC110503ECT

TC110333ECT

TC110303ECT

5.0

3.3

3.0

5.0

3.3

3.0

5-Pin SOT-23A 100 -40°C to +85°C

5-Pin SOT-23A 300 -40°C to +85°C

EXT

GND

TC110

SHDN/SS

OUT

*Other output voltages are available. Please contact

Microchip Technology Inc. for details.

OFF

Package Type

*RC Optional

3V to 5V Supply

5-Pin SOT-23A

EXT

GND

TC110

SHDN/SS

OUT

NOTE: 5-Pin SOT-23A is equivalent to the EIAJ SC-74A

2002 Microchip Technology Inc.

DS21355B-page 1

12 3 4 5 6 7...16

中文翻译

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