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LM2576D2TR4-012G

Name: LM2576D2TR4-012G
Rating: 4.7 (12 reviews)

IC REG MULT CONFG 12V 3A D2PAK-5

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製造商。部分 #LM2576D2TR4-012G
包 D2PAK-5
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Function	Step-Down
OutputConfiguration	Positive or Negative
Topology	Buck
OutputType	Fixed
NumberofOutputs	1
Voltage-Input(Min)	7V
Voltage-Input(Max)	40V
Voltage-Output(Min/Fixed)	12V
Current-Output	3A
Frequency-Switching	52kHz
SynchronousRectifier	No
OperatingTemperature	-40°C ~ 125°C (TJ)
MountingType	Surface Mount
Package/Case	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA

概述

Description

LM2576D2TR4-012G is a fixed-output buck (step-down) regulator from TI’s LM2576 family. It provides a 12 V, 3 A regulated output from a higher DC input (up to about 40 V) with a built‑in switching regulator, simplifying power-supply design.
Key points:
- Output: fixed 12 V, up to 3 A
- Input range: up to ~40 V
- Switching frequency: ~52 kHz
- Efficiency: typically 75–90% depending on conditions
- Package/ packaging: Pb-free, tape-and-reel option (the TR4-012G suffix indicates lead-free, reel packaging; carrier style varies by part)
- External components: requires an inductor, a Schottky catch diode, and input/output capacitors (low-ESR); external components determine exact values per datasheet
- Protections: built-in current limit and thermal shutdown
- Applications: compact 12 V rail generation for automotive, industrial, and consumer power supplies
Note: Pinout and exact external-component values are specified in the datasheet; consult it for layout, inductor value, diode rating, and capacitor types for your design.

Features

Key features of LM2576D2TR4-012G (12 V fixed output version):
- 3 A step-down (buck) regulator with internal switch
- Fixed 12 V output
- 52 kHz fixed-frequency, current-mode PWM control
- Wide input range: 4–40 V
- High efficiency (up to ~90% typical)
- Requires only a few external components: Schottky catch diode, inductor, input and output capacitors
- Protective functions: cycle-by-cycle current limit, thermal shutdown, short-circuit protection
- Simple external component values for stable operation and good regulation
- RoHS-compliant; available in Tape & Reel (TR) packaging for automated assembly (variant: D2TR4-012G)

Package

LM2576D2TR4-012G comes in a D2PAK (TO-263) surface-mount package, supplied on a Tape & Reel (TR) carrier.

Pinout

- Pin count: 5 pins (TO-220 package) plus mounting tab.
- Pin functions (front view, left to right):
1) Vin (_input supply)
2) Output / Switch node
3) Ground
4) Feedback
5) On/Off (enable)
- Tab is connected to Vin.
- Note: LM2576D2 is the fixed 12V output version (012G).

Manufacturer

Manufacturer: Texas Instruments (TI).
TI is an American multinational semiconductor company that designs and manufactures integrated circuits and related products, including analog, DSP, microcontrollers, and power-management ICs.

Application

LM2576D2TR4-012G is a fixed 12V step-down (buck) regulator. Typical applications:
- Automotive power supplies and 12/24V automotive electronics
- Industrial and telecom DC-DC converters
- Power modules for embedded systems, microprocessors, and peripherals
- Battery-powered equipment deriving 12V from higher voltages
- General low-cost, high-efficiency 12V buck converters for consumer electronics

Equivalent

Direct equivalents (same function, 12V fixed output, 3A buck regulator):
- LM2576-12 (TI)
- LM2576D-12 and LM2576D2TR4-012G (TO-220, D-package, tape & reel variant)
- LM2576S-12 (SMD version)
Non-pin-compatible cross substitutes (different pinouts/footprints):
- LM2596S-12 (3A, 12V buck)
- MP2576 (3A buck regulator from MPS)
Note: check pinout and footprint before substituting.