LTM4625EY-PBF 查看數據表（PDF） - Linear Technology

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LTM4625EY-PBF

20VIN , 5A Step-Down DC/DC µModule Regulator

Linear Technology 

LTM4625

20VIN, 5A Step-Down DC/DC

µModule Regulator

Features

n Complete Solution in <1cm2 (Single-Sided PCB) or

0.5cm2 (Dual-Sided PCB)

n Wide Input Voltage Range: 4V to 20V

n Input Voltage Down to 2.375V with External Bias

n 0.6V to 5.5V Output Voltage

n 5A DC Output Current

n ±1.5% Maximum Total DC Output Voltage Error

Over Line, Load and Temperature

n Current Mode Control, Fast Transient Response

n External Frequency Synchronization

n Multiphase Parallel Current Sharing with Multiple

LTM4625s

n Output Voltage Tracking

n Selectable Discontinuous Mode

n Power Good Indicator

n Overvoltage, Overcurrent and Overtemperature

Protection

n 6.25mm × 6.25mm × 5.01mm BGA Package

Applications

n Telecom, Datacom, Networking and Industrial

Equipment

n Medical Diagnostic Equipment

n Data Storage Rack Units and Cards

n Test and Debug Systems

Description

The LTM®4625 is a complete 5A step-down switching

mode µModule (micromodule) regulator in a tiny 6.25mm

× 6.25mm × 5.01mm BGA package. Included in the pack-

age are the switching controller, power FETs, inductor and

support components. Operating over an input voltage range

of 4V to 20V or 2.375V to 20V with an external bias supply,

the LTM4625 supports an output voltage range of 0.6V to

5.5V, set by a single external resistor. Its high efficiency

design delivers up to 5A continuous output current. Only

bulk input and output capacitors are needed.

The LTM4625 supports selectable discontinuous mode

operation and output voltage tracking for supply rail se-

quencing. Its high switching frequency and current mode

control enable a very fast transient response to line and

load changes without sacrificing stability.

Fault protection features include overvoltage, overcurrent

and overtemperature protection.

The LTM4625 is available with SnPb or RoHS compliant

terminal finish.

L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks

and LTpowerCAD is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

Typical Application

5A, 1.5V Output DC/DC µModule® Step-Down Regulator

VIN

4V TO 20V

10µF

0.1µF

CLKIN PHMODE CLKOUT

VIN

VOUT

SVIN

RUN LTM4625

INTVCC

PGOOD

MODE

COMP

TRACK/SS

FB

FREQ

GND SGND

VOUT

1.5V

47µF 5A

40.2k

4625 TA01a

1.5V Output Efficiency vs Load Current

95

90

85

80

75

70

65

VIN = 5V

VIN = 12V

60

0

1

2

3

4

5

LOAD CURRENT (A)

4625 TA01b

For more information www.linear.com/LTM4625

4625f

1

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