Datasheet > LT3693IMSE-TRPBF

LT3693IMSE-TRPBF

更新时间： 2024-11-11 05:43:35

品牌	Logo	应用领域
凌特 - Linear		稳压器开关
页数	文件大小	规格书
24页	308K
描述
36V, 3.5A, 2.4MHz Step-Down Switching Regulator

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LT3693IMSE-TRPBF 数据手册

LT3693

36V, 3.5A, 2.4MHz

Step-Down Switching Regulator

DESCRIPTIO

FEATURES

The LT^®3693 is an adjustable frequency (200kHz to

2.4MHz)monolithicbuckswitchingregulatorthataccepts

■

Wide Input Range: 3.6V to 36V

■

3.5A Maximum Output Current

■

Adjustable Switching Frequency: 200kHz to 2.4MHz

Low Shutdown Current: I < 1μA

Integrated Boost Diode

Synchronizable Between 250kHz to 2MHz

Power Good Flag

Saturating Switch Design: 95m On-Resistance

0.790V Feedback Reference Voltage

Output Voltage: 0.79V to 30V

Thermal Protection

input voltages up to 36V. A high efﬁciency 95m switch

is included on the die along with a boost Schottky diode

and the necessary oscillator, control, and logic circuitry.

Current mode topology is used for fast transient response

and good loop stability. Shutdown reduces input supply

current to less than 1μA while a resistor and capacitor on

the RUN/SS pin provide a controlled output voltage ramp

■

(soft-start). A power good ﬂag signals when V

reaches

OUT

91% of the programmed output voltage. The LT3693 is

available in 10-Pin MSOP and 3mm × 3mm DFN packages

with exposed pads for low thermal resistance.

Soft-Start Capability

Small 10-Pin Thermally Enhanced MSOP and

(3mm × 3mm) DFN Packages

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

All other trademarks are the property of their respective owners.

APPLICATIO S

■

Automotive Battery Regulation

■

Power for Portable Products

■

Distributed Supply Regulation

■

Industrial Supplies

■

Wall Transformer Regulation

TYPICAL APPLICATIO

5V Step-Down Converter

Efﬁciency

OUT

100

6.3V TO 36V

3.5A

= 12V

RUN/SS

BOOST

OFF ON

15k

= 34V

= 24V

0.47 F

4.7 H

LT3693

GND

10 F

680pF

= 5V

OUT

536k

63.4k

L = 4.7μH

SYNC

f = 600kHz

100k

47 F

0.5

1.5

2.5

3.5

OUTPUT CURRENT (A)

3693 G01

3693 TA01a

3693f

12 3 4 5 6 7...24

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