3724MPFE datasheet(1/24 Pages) LINER

Teilenummer	3724MPFE

Bauteilbeschribung	High Voltage, Current Mode Switching Regulator Controller

PDF	24 Pages

Scroll/Zoom	100%

Hersteller	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3724

1

3724fc

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

High Voltage, Current Mode

Switching Regulator Controller

The LT®3724 is a DC/DC controller used for medium power,

low part count, low cost, high efﬁciency supplies. It of-

fers a wide 4V-60V input range (7.5V minimum startup

voltage) and can implement step-down, step-up, inverting

and SEPIC topologies.

The LT3724 includes Burst Mode operation, which re-

duces quiescent current below 100μA and maintains

high efﬁciency at light loads. An internal high voltage bias

regulator allows for simple biasing and can be back driven

to increase efﬁciency.

Additional features include ﬁxed frequency current mode

control for fast line and load transient response; a gate driver

capable of driving large N-channel MOSFETs; a precision

undervoltage lockout function; 10μA shutdown current;

short-circuit protection; and a programmable soft-start

function that directly controls output voltage slew rates at

startup which limits inrush current, minimizes overshoot

and facilitates supply sequencing.

The LT3724 is available in a 16-lead thermally enhanced

TSSOP package.

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

Burst Mode is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents including 5731694, 6498466, 6611131.

High Voltage Step-Down Regulator

n Wide Input Range: 4V to 60V

n Output Voltages up to 36V (Step-Down)

n Burst Mode® Operation: <100μA Supply Current

n 10μA Shutdown Supply Current

n ±1.3% Reference Accuracy

n 200kHz Fixed Frequency

n Drives N-Channel MOSFET

n Programmable Soft-Start

n Programmable Undervoltage Lockout

n Internal High Voltage Regulator for Gate Drive

n Thermal Shutdown

n Current Limit Unaffected by Duty Cycle

n 16-Pin Thermally Enhanced TSSOP Package

n Industrial Power Distribution

n 12V and 42V Automotive and Heavy Equipment

n High Voltage Single Board Systems

n Distributed Power Systems

n Avionics

n Telecom Power

Efﬁciency and Power Loss

vs Load Current

VIN

SHDN

CSS

Burst_EN

VFB

VC

SGND

BOOST

TG

SW

VCC

PGND

SENSE+

SENSE–

VIN

30V TO

60V

VOUT

24V

75W

3724 TA01a

LT3724

1M

68.1k

1000pF

4.99k

93.1k

10Ω

200k

0.22μF

COUT

330μF

CIN

68μF

1μF

47μH

0.025Ω

Si7852

SS3H9

120pF

680pF

40.2k

+

LOAD CURRENT (A)

0.1

95

90

85

80

75

70

65

12

10

8

6

4

2

0

110

3724 TA01b

VIN = 48V

LOSS

EFFICIENCY

Ähnliche Beschreibung - 3724MPFE

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
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