LT1171CT#06PBF Linear Technology, LT1171CT#06PBF Datasheet

LT1171CT#06PBF

Manufacturer Part Number

LT1171CT#06PBF

Description

IC REG SW HI-EFF 2.5A TO220-5

Manufacturer

Linear Technology

Type

Step-Down (Buck), Step-Up (Boost), Inverting, Cuk, Flyback, Forward Converterr

Datasheet

1.LT1071CTPBF.pdf (12 pages)

Specifications of LT1171CT#06PBF

Internal Switch(s)

Yes

Synchronous Rectifier

Number Of Outputs

Voltage - Output

1.25 ~ 40 V

Current - Output

2.5A

Frequency - Switching

100kHz

Voltage - Input

3 ~ 40 V

Operating Temperature

0°C ~ 100°C

Mounting Type

Through Hole

Package / Case

TO-220-5 (Bent and Staggered Leads)

Power - Output

100W

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Part Number:

LT1171CT#06PBFLT1171CT

Manufacturer:

Quantity:

Company:

Part Number:

LT1171CT#06PBFLT1171CT

Quantity:

5 510

Company:

Part Number:

LT1171CT#06PBFLT1171CT

Manufacturer:

Quantity:

1 000

Company:

Part Number:

LT1171CT#06PBFLT1171CT

Manufacturer:

LINEAR/凌特

Quantity:

20 000

Company:

Part Number:

LT1171CT#06PBFLT1171CT#PBF

Manufacturer:

LINEAR/凌特

Quantity:

20 000

Current page: 1 of 12
Download datasheet (209Kb)

FEATURES

USER NOTE:

This data sheet is only intended to provide specifications, graphs and a general functional

description of the LT1070/LT1071. Application circuits are included to show the capability of the

LT1070/LT1071. A complete design manual (AN19) should be obtained to assist in developing new

designs. This manual contains a comprehensive discussion of both the LT1070 and the external

components used with it, as well as complete formulas for calculating the values of these

components. The manual can also be used for the LT1071 by factoring in the lower switch current

rating. A second Application Note, AN25, which details off-line applications is available.

TYPICAL APPLICATIO

APPLICATIO S

Wide Input Voltage Range: 3V to 60V

Low Quiescent Current: 6mA

Internal 5A Switch (2.5A for LT1071)

Very Few External Parts Required

Self Protected Against Overloads

Operates in Nearly All Switching Topologies

Shutdown Mode Draws Only 50 A Supply Current

Flyback Regulated Mode Has Fully Floating Outputs

Comes in Standard 5-Pin TO-220 Package

Can be Externally Synchronized (Consult Factory)

Logic Supply 5V at 10A

5V Logic to 15V Op Amp Supply

Off-Line Converter Up to 200W

Battery Upconverter

Power Inverter (+ to –) or (– to +)

Fully Floating Multiple Outputs

For Lower Current Applications, See the LT1072

100 F

C3*

REQUIRED IF INPUT LEADS

PULSE ENGINEERING 92113

GND

Boost Converter (5V to 12V)

LT1070

150 H

1 F

L1**

OUTPUT

FILTER

10 H

1000 F

100 F

10.7k

1.24k

1070/71 TA01

12V

DESCRIPTIO

The LT

ing regulators. They can be operated in all standard switch-

ing configurations including buck, boost, flyback, for-

ward, inverting and “Cuk”. A high current, high efficiency

switch is included on the die along with all oscillator,

control and protection circuitry. Integration of all func-

tions allows the LT1070/LT1071 to be built in a standard

5-pin T0-220 power package. This makes it extremely

easy to use and provides “bust proof” operation similar to

that obtained with 3-pin linear regulators.

The LT1070/LT1071 operate with supply voltages from 3V

to 60V, and draw only 6mA quiescent current. They can

deliver load power up to 100W with no external power

devices. By utilizing current mode switching techniques,

they provide excellent AC and DC load and line regulation.

The LT1070/LT1071 have many unique features not found

even on the vastly more difficult to use low power control

chips presently available. They use adaptive antisat switch

drive to allow very wide ranging load currents with no loss

in efficiency. An externally activated shutdown mode

reduces total supply current to 50 A typical for standby

operation. Totally isolated and regulated outputs can be

generated by using the optional “flyback regulation mode”

built into the LT1070/LT1071, without the need for

optocouplers or extra transformer windings.

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

5A and 2.5A High Efficiency

1070/LT1071 are monolithic high power switch-

100

ROUGH GUIDE ONLY. BUCK MODE P

SPECIAL TOPOLOGIES DELIVER MORE POWER

DIVIDE VERTICAL POWER SCALE BY 2 FOR LT1071

Switching Regulators

Maximum Output Power*

BOOST

INPUT VOLTAGE (V)

ISOLATED

BUCK/BOOST

LT1070/LT1071

= 5V

BUCK/BOOST

= 30V

FLYBACK

OUT

1070/71 TA02

= 5A • V

OUT

10701fe

Related parts for LT1171CT#06PBF

LT1171CT#06PBF Summary of contents

Page 1

... A typical for standby operation. Totally isolated and regulated outputs can be generated by using the optional “flyback regulation mode” built into the LT1070/LT1071, without the need for optocouplers or extra transformer windings. , LTC and LT are registered trademarks of Linear Technology Corporation 100 F 12V ...

Page 2

LT1070/LT1071 ABSOLUTE MAXIMUM Supply Voltage LT1070/LT1071 (Note 2) .................................... 40V LT1070HV/LT1071HV (Note 2) .......................... 60V Switch Output Voltage LT1070/LT1071 .................................................. 65V LT1070HV/LT1071HV ........................................ 75V Feedback Pin Voltage (Transient, 1ms) ................ 15V U PACKAGE/ORDER INFORMATION BOTTOM VIEW V ...

Page 3

ELECTRICAL CHARACTERISTICS range, otherwise specifications are SYMBOL PARAMETER V Flyback Reference Voltage FB Change in Flyback Reference Voltage Flyback Reference Voltage Line Regulation Flyback Amplifier Transconductance (g Flyback Amplifier Source and Sink Current B Output Switch Breakdown ...

Page 4

LT1070/LT1071 W U TYPICAL PERFORMANCE CHARACTERISTICS Switch Current Limit vs Duty Cycle 16 FOR LT1071, DIVIDE VERTICAL SCALE – 125 ...

Page 5

W U TYPICAL PERFORMANCE CHARACTERISTICS Driver Current* vs Switch Current 160 140 120 100 – SWITCH CURRENT (A) 1070/71 G10 * ...

Page 6

LT1070/LT1071 W U TYPICAL PERFORMANCE CHARACTERISTICS Switch “Off” Characteristics 1000 900 800 700 600 500 V = SUPPLY 400 3V 15V 40V 55V 300 200 100 100 SWITCH VOLTAGE ...

Page 7

U OPERATION midfrequencies in the energy storage inductor. This greatly simplifies closed-loop frequency compensation under widely varying input voltage or output load condi- tions. Finally, it allows simple pulse-by-pulse current limiting to provide maximum switch protection under output overload or ...

Page 8

LT1070/LT1071 U TYPICAL APPLICATIONS OPTIONAL INPUT FILTER 2 C5* 100 F * REQUIRED IF INPUT LEADS 2" ** PULSE ENGINEERING 92112 + GND – (Note that maximum output currents are ...

Page 9

U TYPICAL APPLICATIONS V IN 28V + C5* 100 F *REQUIRED IF INPUT LEADS Negative to Positive Buck/Boost Converter L1** 150 C4* LT1070 100 GND V C OPTIONAL R3 INPUT 2.2k ...

Page 10

LT1070/LT1071 U TYPICAL APPLICATIONS Voltage Boosted Boost Converter R4 C3 680 0. 15V LT1070 R1 98k FB GND 10k 1.24k ...

Page 11

... OBSOLETE PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U (Note that maximum output currents are divided by 2 for the LT1071) ...

Page 12

... Input, TSSOP-16E, SO8 Package www.linear.com OPTIONAL OUTPUT FILTER 15V + C5 200 F COM + 200 F –15V SWITCH VOLTAGE (DIODE FORWARD VOLTAGE) SECONDARY VOLTAGE 1070/71 TA07 (N)( OUT 2000 F R1 3.74k R2 1.24k 1070/71 TA18 LT/CPI 0202 1.5K REV E • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1989 10701fe ...

Related keywords

lt117
lt1172
lt1171
lt1173
lt1171hv
lt1176
lt1171c
lt1171cq
lt1171ct
lt1171it
LT1171CT#06PBF datasheet
LT1171CT#06PBF data sheet
LT1171CT#06PBF pdf datasheet
LT1171CT#06PBF component
LT1171CT#06PBF part
LT1171CT#06PBF distributor
LT1171CT#06PBF RoHS
LT1171CT#06PBF datasheet download