Datasheet > MIC24045

MIC24045

更新时间： 2024-09-21 01:19:59

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
46页	979K
描述
I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter

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MIC24045 数据手册

MIC24045

I²C Programmable, 4.5V-19V Input,

5A Step-Down Converter

Features

General Description

• 4.5V to 19V Input Voltage Range

• 5A (maximum) Output Current

• I²C Programmable Output Voltage:

The MIC24045 is an I²C-programmable, high-effi-

ciency, wide input range, 5A synchronous step-down

regulator. The MIC24045 is perfectly suited for multiple

voltage rail application environments, typically found in

computing and telecommunication systems. In the

MIC24045 various parameters can be programmed via

I²C, such as output voltage, switching frequency,

soft-start slope, margining, current limit values and

start-up delays. The wide switching frequency

adjustment range, valley current-mode control tech-

nique, high-performance error amplifier and external

compensation allow for the best trade-offs between

high efficiency and the smallest possible solution size.

- 0.64V to 5.25V in 5 mV, 10 mV, 30 mV and

50 mV steps

• High Efficiency (>95%)

• I²C Programmability of:

- Soft-Start: 0.16, 0.38, 0.76 and 1.5V/ms ramp

rates

- Switching Frequency: 310 kHz, 400 kHz,

500 kHz, 570 kHz, 660 kHz, 780 kHz, 1 MHz,

1.2 MHz

The MIC24045 supports extensive diagnostics and

status information through I²C.

- Current Limits for 2A, 3A, 4A and 5A loads

- Output Voltage Margining: -5%, +5%

- Start-up delays: 0 ms to 10 ms

The MIC24045 pinout is compatible with the MIC24046

pin-strapping programmable regulator pinout, such that

I²C-based implementations can be easily converted

into pin-programmable ones.

• ±1% Output Voltage Accuracy Over Temperature

(0.64V to 1.95V)

• Supports Safe Start-Up with Pre-Biased Output

• Extensive Diagnostics through I²C Interface

The MIC24045 is available in a thermally-efficient,

space-saving 20-pin 3 mm x 3 mm FQFN package,

with an operating junction temperature range from

-40°C to +125°C.

Applications

• Servers, Data Storage, Routers and Base

Stations

• FPGAs, DSP and Low-Voltage ASIC Power

Typical Application

V_DDA

V_IN

4.5V to 19V

V_INLDO

V_DDA

A_GND

BST

V_IN

V_OUT

0.64V to 5.25V

OUTSNS

P_GND

V_DDP

COMP

ADR1

ADR0

MIC24045

V_DDA

SDA

SCL

I²C

Address

Selection

V_DDA

P_GOOD

ENABLE

 2016 Microchip Technology Inc.

DS20005568A-page 1

12 3 4 5 6 7...46

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与MIC24045相关器件

型号	品牌	获取价格	描述	数据表
MIC24045-2ZYFL	MICROCHIP	获取价格	I2C Programmable, 4.5V-19V Input, 5A Step-Down Converter
MIC24045-2ZYFL-TR	MICROCHIP	获取价格	IC REG BUCK 0.64V 5A SYNC 20FQFN
MIC24045-DIYFL-TR	MICROCHIP	获取价格	IC REG BUCK 1V 5A SYNC 20FQFN
MIC24045-JFYFL-TR	MICROCHIP	获取价格	IC REG BUCK 3.3V 5A SYNC 20FQFN
MIC24046	MICREL	获取价格	Pin-Programmable, 4.5V â 19V, 5A Step-Down
MIC24046	MICROCHIP	获取价格	MIC24046 is a pin-programmable, high-efficiency, wide-input range, 5A, synchronous step-do
MIC24046-H	MICREL	获取价格	Pin-Programmable, 4.5V â 19V, 5A Step-Down
MIC24046-HYFL	MICREL	获取价格	Pin-Programmable, 4.5V â 19V, 5A Step-Down
MIC24046-HYFL-TR	MICROCHIP	获取价格	IC REG BUCK PROG 5A SYNC
MIC24046YFL	MICREL	获取价格	Pin-Programmable, 4.5V â 19V, 5A Step-Down