Linear Technology LTM4624Y Demo Board, 14V, 4A Step-Down µModule Regulator DC1889A DC1889A 数据表

LTM4624

1

4624fb

For more information 

www.linear.com/LTM4624

14V

IN

, 4A Step-Down DC/DC 

µModule Regulator

 is a complete 4A step-down switching mode 

µModule

®

 (micromodule) regulator in a tiny 6.25mm 

× 

6.25mm 

× 5.01mm BGA package. Included in the package 

are the switching controller, power FETs, inductor and sup-

port components. Operating over an input voltage range of 

4V to 14V or 2.375V to 14V with an external bias supply, 

the LTM4624 supports an output voltage range of 0.6V to 

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

design delivers 4A continuous, 5A peak, output current. 

Only bulk input and output capacitors are needed. 
The LTM4624 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 LTM4624 is available with SnPb (BGA) or RoHS 

compliant terminal finish.

n

n

  Wide Input Voltage Range: 4V to 14V 

n

  Input Voltage Down to 2.375V with External Bias

n

  0.6V to 5.5V Output Voltage

n

  4A DC, 5A Peak Output Current

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  ±2% Total DC Output Voltage Error

n

  Current Mode Control, Fast Transient Response

n

  Output Voltage Tracking

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  Selectable Discontinuous Mode

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  Power Good Indicator

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  Overvoltage, Overcurrent and Overtemperature 

Protection 

n

 6.25mm 

× 6.25mm × 5.01mm BGA Package

n

  Telecom, Datacom, Networking and Industrial 

Equipment

n

  Medical Diagnostic Equipment

n

  Data Storage Rack Units and Cards

n

  Test and Debug Systems

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.

40.2k

4624 TA01a

10µF

16V

V

IN

4V TO 14V

V

OUT

1.5V

4A

47µF

6.3V

0.1µF

V

IN

SV

IN

RUN
INTV

CC

MODE
TRACK/SS
FREQ

V

OUT

FB

PGOOD

COMP

GND

SGND

LTM4624

LOAD CURRENT (A)

0

EFFICIENCY (%)

80

85

90

4

4624 TA01b

75

70

50

1

2

3

55

60

65

100

95

V

OUT

 = 5V

V

OUT

 = 3.3V

V

OUT

 = 2.5V

V

OUT

 = 1.5V

V

OUT

 = 1.2V

V

OUT

 = 1V