LT1076-5 - LT1076-5是5V Step-Down Switching Regulator

LT1076-5是LINEAR凌力尔特公司的一款内部开关电源降压产品，LT1076-5是LT1076-5是5V Step-Down Switching Regulator，本站介绍了LT1076-5的封装应用图解、特点和优点、功能等，并给出了与LT1076-5相关的LINEAR元器件型号供参考。

LT1076-5 - LT1076-5是5V Step-Down Switching Regulator - 内部开关电源降压 - 电源管理 - 凌力尔特

LT1076-5 - 5V Step-Down Switching Regulator

LT1076-5 - 5V Step-Down Switching Regulator - Linear Technology（凌力尔特）

功能描述

The LT1076-5 is a 2A fixed 5V output monolithic bipolar switching regulator which requires only a few external parts for normal operation. The power switch, all oscillator and control circuitry, all current limit components, and an output monitor are included on the chip. The topology is a classic positive “buck” configuration but several design innovations 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 LT1076-5 to drive a tapped inductor in the buck mode with output currents up to 4A.

The LT1076-5 uses a true analog multiplier in the feedback loop. This makes the device respond nearly instantaneously to input voltage fluctuations and makes loop gain independent of input voltage. As a result, dynamic behavior of the regulator is significantly improved over previous designs.

On-chip pulse by pulse current limiting makes the LT1076-5 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 LT1076-5 is available in a low cost 5- and 7-lead TO-220 packages with frequency pre-set at 100kHz and current limit at 2.6A. See Application Note 44 for design details.

特点

Fixed 5V Output

2A On-Board Switch

100kHz Switching Frequency

2% Output Voltage Tolerance Over Temperature

Greatly Improved Dynamic Behavior

Available in Low Cost 5- and 7-Lead Packages

Only 9.5mA Quiescent Current

Operates Up to 60V Input

应用

5V Output Buck Converter

Tapped Inductor Buck Converter with 4A Output at 5V

Positive-to-Negative Converter

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LT1076CQ-5	DDPAK-5	C	$5.00	$3.95
LT1076CQ-5#PBF	DDPAK-5	C	$5.00	$3.95
LT1076CQ-5#TR	DDPAK-5	C		$4.07
LT1076CQ-5#TRPBF	DDPAK-5	C		$4.07
LT1076CR-5	DDPAK-7	C	$5.42	$4.30
LT1076CR-5#PBF	DDPAK-7	C	$5.42	$4.30
LT1076CR-5#TR	DDPAK-7	C		$4.42
LT1076CR-5#TRPBF	DDPAK-7	C		$4.42
LT1076CT-5	TO-220	C	$4.33	$3.40
LT1076CT-5#06PBF	TO-220	C	$4.33	$3.40
LT1076CT-5#PBF	TO-220	C	$4.33	$3.40
LT1076CT7-5	TO-220	C	$5.00	$3.95
LT1076CT7-5#06	TO-220	C	$5.00	$3.95
LT1076CT7-5#PBF	TO-220	C	$5.00	$3.95
LT1076HVCT-5	TO-220	C	$7.58	$6.00
LT1076HVCT-5#06	TO-220	C	$7.58	$6.00
LT1076HVCT-5#PBF	TO-220	C	$7.58	$6.00
LT1076HVCT7-5	TO-220	C	$8.75	$6.90
LT1076HVCT7-5#PBF	TO-220	C	$8.75	$6.90
LT1076HVIT-5	TO-220	I	$9.55	$7.35
LT1076HVIT-5#PBF	TO-220	I	$9.55	$7.35
LT1076IT-5	TO-220	I	$5.92	$4.85
LT1076IT-5#PBF	TO-220	I	$5.92	$4.85

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