LTM4601HVV View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTM4601HVV

12A 28VIN DC/DC µModule Regulator with PLL, Output Tracking and Margining

Linear Technology 

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SIMPLIFIED BLOCK DIAGRAM

VIN

R1

UVLO

FUNCTION

R2

VOUT_LCL

>1.9V = ON

<1V = OFF

MAX = 5V RUN

PGOOD

COMP

RSET

19.1k

SGND

MARG1

MARG0

VFB

fSET

MPGM

TRACK/SS

CSS

PLLIN

INTVCC

DRVCC

INTERNAL

COMP

VOUT

1M

60.4k

5.1V

ZENER

POWER CONTROL

39.2k

50k 50k

4.7µF

50k

LTM4601HV

1.5µF

+

VIN

4.5V TO 28V

CIN

2.2Ω

Q1

0.47µH

22µF

Q2

VOUT

2.5V

12A

+

COUT

PGND

10k INTVCC

10k

10k

10k

VOSNS–

VOSNS+

DIFFVOUT

= SGND

= PGND

Figure 1. Simplified LTM4601HV Block Diagram

4601HV F01

DECOUPLING REQUIREMENTS TA = 25°C, VIN = 12V. Use Figure 1 configuration.

SYMBOL

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

CIN

External Input Capacitor Requirement

IOUT = 12A, 3× 10µF Ceramics

20

30

µF

(VIN = 4.5V to 28V, VOUT = 2.5V)

COUT

External Output Capacitor Requirement

IOUT = 12A

(VIN = 4.5V to 28V, VOUT = 2.5V)

100

200

µF

4601hvfb

9

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