LT1076CT7#PBF datasheet, PDF - EEWORLD Datasheet

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LT1076CT7#PBF: DescriptionConv DC-DC 7.3V to 45V Synchronous Step Down Single-Out 2.5V to 50V 10A 7-Pin(7+Tab) TO-220 Tube; File Size179KB，16 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LT1076CT7#PBF Overview

Conv DC-DC 7.3V to 45V Synchronous Step Down Single-Out 2.5V to 50V 10A 7-Pin(7+Tab) TO-220 Tube

LT1076CT7#PBF Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant with Exemption
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
SVHC	Yes
SVHC Exceeds Threshold	Yes
Type	Synchronous Step Down
Output Type	Adjustable
Switching Frequency (kHz)	110
Switching Regulator	Yes
Number of Outputs	1
Output Voltage (V)	2.5 to 50
Maximum Output Current (A)	10
Minimum Input Voltage (V)	7.3
Maximum Input Voltage (V)	45
Operating Supply Voltage (V)	7.3 to 45
Typical Switch Current (A)	2.6
Typical Quiescent Current (uA)	8500
Line Regulation	0.02%/V
Minimum Operating Temperature (°C)	0
Maximum Operating Temperature (°C)	70
Supplier Temperature Grade	Commercial
Packaging	Tube
Pin Count	7
Standard Package Name	TO-220
Supplier Package	TO-220
Mounting	Through Hole
Package Height	9.4(Max)
Package Length	10.54(Max)
Package Width	4.57(Max)
PCB changed	7
Tab	Tab
Lead Shape	Through Hole

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LT1074/LT1076

Step-Down Switching

Regulator

FEATURES

■

5A Onboard Switch (LT1074)

Operates Up to 60V Input

100kHz Switching Frequency

Greatly Improved Dynamic Behavior

Available in Low Cost 5 and 7-Lead Packages

Only 8.5mA Quiescent Current

Programmable Current Limit

Micropower Shutdown Mode

ponents, are included on the chip. The topology is a classic

positive “buck” configuration but several design innova-

tions allow this device to be used as a positive-to-negative

converter, a negative boost converter, and as a flyback

converter. The switch output is specified to swing 40V

below ground, allowing the LT1074 to drive a tapped-

inductor in the buck mode with output currents up to 10A.

The LT1074 uses a true analog multiplier in the feedback

loop. This makes the device respond nearly instanta-

neously to input voltage fluctuations and makes loop gain

independent of input voltage. As a result, dynamic behav-

ior of the regulator is significantly improved over previous

designs.

On-chip pulse by pulse current limiting makes the LT1074

nearly bust-proof for output overloads or shorts. The input

voltage range as a buck converter is 8V to 60V, but a self-

boot feature allows input voltages as low as 5V in the

inverting and boost configurations.

The LT1074 is available in low cost TO-220 or DD packages

with frequency pre-set at 100kHz and current limit at 6.5A

(LT1076 = 2.6A). A 7-pin TO-220 package is also available

which allows current limit to be adjusted down to zero. In

addition, full micropower shutdown can be programmed.

See Application Note 44 for design details.

A fixed 5V output, 2A version is also available. See LT1076-5.

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

APPLICATIO S

■

Buck Converter with Output Voltage Range of 2.5V

to 50V

Tapped-Inductor Buck Converter with 10A Output

at 5V

Positive-to-Negative Converter

Negative Boost Converter

Multiple Output Buck Converter

DESCRIPTIO

The LT

1074 is a 5A (LT1076 is rated at 2A) monolithic

bipolar switching regulator which requires only a few

external parts for normal operation. The power switch, all

oscillator and control circuitry, and all current limit com-

TYPICAL APPLICATIO

Basic Positive Buck Converter

L1**

H (LT1074)

100

H (LT1076)

10V TO 40V

LT1074

2.7k

†

200

0.01

MBR745*

2.8k

2.21k

100

EFFICIENCY (%)

GND

Buck Converter Efficiency

LT1074

OUT

= 12V, V

= 20V

500

25V

* USE MBR340 FOR LT1076

** COILTRONICS #50-2-52 (LT1074)

#100-1-52 (LT1076)

PULSE ENGINEERING, INC.

#PE-92114 (LT1074)

#PE-92102 (LT1076)

HURRICANE #HL-AK147QQ (LT1074)

#HL-AG210LL (LT1076)

†

RIPPLE CURRENT RATING

≥

OUT

= 5V, V

= 15V

OUTPUT LOAD CURRENT (A)

L = 50µH TYPE 52 CORE

DIODE = MBR735

LT1074•TA01

LT1074•TPC27

sn1074 1074fds

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