ADP1610 データシートの表示（PDF） - Analog Devices

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ADP1610

1.2 MHz DC-to-DC Step-Up Switching Converter

Analog Devices 

FEATURES

Fully integrated 1.2 A, 0.2 Ω, power switch

Pin-selectable 700 kHz or 1.2 MHz PWM frequency

92% efficiency

Adjustable output voltage up to 12 V

3% output regulation accuracy

Adjustable soft start

Input undervoltage lockout

MSOP 8-lead package

APPLICATIONS

TFT LC bias supplies

Portable applications

Industrial/instrumentation equipment

1.2 MHz DC-to-DC Step-Up Switching

Converter

ADP1610

GENERAL DESCRIPTION

The ADP1610 is a dc-to-dc step-up switching converter with

an integrated 1.2 A, 0.2 Ω power switch capable of providing

an output voltage as high as 12 V. With a package height of less

than 1.1 mm, the ADP1610 is optimal for space-constrained

applications such as portable devices or thin film transistor

(TFT) liquid crystal displays (LCDs).

The ADP1610 operates in pulse-width modulation (PWM) current

mode with up to 92% efficiency. Adjustable soft start prevents

inrush currents at startup. The pin-selectable switching frequency

and PWM current mode architecture allow excellent transient

response, easy noise filtering, and the use of small, cost-saving

external inductors and capacitors.

The ADP1610 is offered in the RoHS compliant 8-lead MSOP

and operates over the temperature range of −40°C to +85°C.

FB 2

RT 7

FUNCTIONAL BLOCK DIAGRAM

REF

COMP

1

ERROR

AMP

gm

IN

6

BIAS

ADP1610

RAMP

GEN

OSC

F/F

RQ

S

COMPARATOR

DRIVER

5 SW

SS 8

SD 3

SOFT START

Figure 1.

CURRENT

SENSE

AMPLIFIER

4

GND

Rev. A

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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113 ©2004–2008 Analog Devices, Inc. All rights reserved.

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