LTM4620 View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTM4620

Dual 13A or Single 26A DC/DC µModule Regulator

Linear Technology 

LTM4620

SIMPLIFIED BLOCK DIAGRAM

PGOOD1

TRACK1

SS CAP

VIN = 100µA

RT

VIN

RT TEMP

CLKOUT

RUN1

MODE_PLLIN

PHASMD

MTOP1

MBOT1

SS CAP

COMP1

SGND

TRACK2

INTVCC

4.7µF

EXTVCC

INTERNAL

COMP

POWER

CONTROL

MTOP2

RUN2

MBOT2

COMP2

fSET

RfSET

121k

SGND

INTERNAL

COMP

INTERNAL

FILTER

+–

VIN

1µF

GND

CIN1

22µF

25V

CIN2

22µF

25V

0.33µH

2.2µF

SW1

VOUT1

+

GND

VOUTS1

COUT1

60.4k

1µF

VFB1

PGOOD2

VIN

GND

RFB1

40.2k

CIN3

22µF

25V

VOUT1

1.5V/13A

CIN4

22µF

25V

0.33µH

2.2µF

60.4k

SW2

VOUT2

+

GND

VOUTS2

COUT2

VFB2

RFB2

60.4k

VOUT2

1.2V/13A

DIFFOUT

DIFFN

DIFFP

4620 BD

Figure 1. Simplified LTM4620 Block Diagram

DECOUPLING REQUIREMENTS TA = 25°C. Use Figure 1 configuration.

SYMBOL

CIN1, CIN2

CIN3, CIN4

COUT1

COUT2

PARAMETER

External Input Capacitor Requirement

(VIN = 4.5V to 16V, VOUT1 = 1.5V)

(VIN = 4.5V to 16V, VOUT2 = 1.2V)

External Output Capacitor Requirement

(VIN = 4.5V to 16V, VOUT1 = 1.5V)

(VIN = 4.5V to 16V, VOUT2 = 1.2V)

CONDITIONS

IOUT1 = 13A

IOUT2 = 13A (Note 8)

IOUT1 = 13A

IOUT2 = 13A (Note 8)

MIN TYP MAX UNITS

22

µF

22

µF

300

µF

300

µF

4620fb

10

For more information www.linear.com/LTM4620

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