MIC28512 datasheet(1/34 Pages) MICROCHIP

部件名	MIC28512

功能描述	70V, 2A Synchronous Buck Regulator

PDF	34 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

标志

1 / 34 page

 2016 Microchip Technology Inc.

DS20005524A-page 1

MIC28512

Features

• 4.6V to 70V Operating Input Voltage Supply

• Up to 2A Output Current

• Integrated High-Side and Low-Side N-Channel

MOSFETs

• HyperLight Load (MIC28512-1) and Hyper Speed

Control (MIC28512-2) Architecture

• Enable Input and Power Good (PGOOD) Output

• Programmable Current-Limit and Foldback

“Hiccup” Mode Short-Circuit Protection

• Built-In 5V Regulator for Single-Supply Operation

• Adjustable 200 kHz to 680 kHz Switching

Frequency

• Fixed 5 ms Soft-Start

• Internal Compensation and Thermal Shutdown

• Thermally-Enhanced 24-Pin 3 mm x 4 mm

FCQFN Package

• –40°C to +125°C Junction Temperature Range

Applications

• Industrial Power Supplies

• Distributed Supply Regulation

• Base Station Power Supplies

• Wall Transformer Regulation

• High-Voltage Single-Board Systems

General Description

The MIC28512 is a synchronous step-down switching

regulator with internal power switches capable of

providing up to 2A output current from a wide input

supply range from 4.6V to 70V. The output voltage is

adjustable down to 0.8V with a guaranteed accuracy of

±1%. A constant switching frequency can be

programmed from 200 kHz to 680 kHz. The Hyper

Speed Control® and HyperLight Load® architectures of

the MIC28512 allow for high VIN (low VOUT) operation

and ultra-fast transient response while reducing the

required output capacitance and providing very good

light-load efficiency.

The MIC28512 offers a full suite of features to ensure

protection under fault conditions. These include

undervoltage lockout to ensure proper operation under

power sag conditions, internal soft-start to reduce

inrush current, foldback current-limit, “hiccup” mode

short-circuit protection and thermal shutdown.

Package Type

MIC28512

24-Pin 3 mm x 4 mm FCQFN (FL)

DL

PGND

DH

PVIN

LX

BST

PVDD

VDD

ILIM

VIN

EN

PGOOD

7

8

910

11

12

18

17

16

15

14

13

24

23

22

21

20

19

1

2

3

4

5

6

PVIN

FB

AGND

70V, 2A Synchronous Buck Regulator

类似零件编号 - MIC28512

制造商	部件名	数据表	功能描述
Micrel Semiconductor	MIC28512	532Kb / 10P	70V/2A Synchronous Buck Regulator

More results

类似说明 - MIC28512

制造商	部件名	数据表	功能描述
International Rectifier	IR3843WMPBF	732Kb / 34P	HIGHLY EFFICIENT INTEGRATED 2A SYNCHRONOUS BUCK REGULATOR
Intersil Corporation	ISL8502	489Kb / 19P	2A Synchronous Buck Regulator with Integrated MOSFETs June 29, 2010
Alpha & Omega Semicondu...	AOZ1020	539Kb / 15P	EZBuck??2A Synchronous Buck Regulator
Alpha & Omega Semicondu...	AOZ1252	570Kb / 13P	2A EZBuck??Synchronous Buck Regulator
Micrel Semiconductor	MIC23451	3Mb / 20P	3MHz, 2A Triple Synchronous Buck Regulator
Micrel Semiconductor	MIC28512	532Kb / 10P	70V/2A Synchronous Buck Regulator
Alpha & Omega Semicondu...	AOZ6622	699Kb / 15P	EZBuckTM 2A Synchronous Buck Regulator
	AOZ6662DI	984Kb / 16P	EZBuckTM 2A Synchronous Buck Regulator Rev. 1.2 January 2021
	AOZ6682CI	1Mb / 14P	EZBuck™ 2A Synchronous Buck Regulator Rev. 1.2 May 2021
	AOZ6762DI	877Kb / 15P	EZBuckTM 2A 1.25MHz Synchronous Buck Regulator Rev. 1.1 April 2021