EL7564 データシートの表示（PDF） - Intersil

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EL7564

Monolithic 4 Amp DC/DC Step-Down Regulator

Intersil 

EL7564

Typical Performance Curves (Continued)

JEDEC JESD51-7 HIGH EFFECTIVE THERMAL

CONDUCTIVITY TEST BOARD. HTSSOP EXPOSED

DIEPAD SOLDERED TO PCB PER JESD51-5

3.5

3 3.333W

2.5

2

1.5

1

0.5

0

0

25

50

75 85 100 125 150

AMBIENT TEMPERATURE (°C)

FIGURE 21. PACKAGE POWER DISSIPATION vs AMBIENT

TEMPERATURE

JEDEC JESD51-3 LOW EFFECTIVE THERMAL

CONDUCTIVITY TEST BOARD

1

0.9

909mW

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

0

25

50

75 85 100 125 150

AMBIENT TEMPERATURE (°C)

FIGURE 22. PACKAGE POWER DISSIPATION vs AMBIENT

TEMPERATURE

Block Diagram

0.1µF

390pF

VREF

COSC

2.2nF

22Ω

VTJ

JUNCTION

TEMPERATURE

CONTROLLER

SUPPLY

VDD

VOLTAGE

REFERENCE

OSCILLATOR

0.22µF

EN

STP

STN

PWM

CONTROLLER

POWER

FET

DRIVERS

POWER

FET

POWER

TRACKING

SGND

FB

CURRENT

SENSE

VREF -

+

VDRV

VHI

VIN

0.22µF

4.7µH

PGND

D1

330µF

2370Ω

VOUT

100pF

1kΩ

PG

9

FN7297.3

May 9, 2005

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