003F 查看數據表（PDF） - Intersil

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003F

Highly Efficient 3A Synchronous Buck Regulator

Intersil 

ISL85003, ISL85003A

Typical Performance Curves Circuit of VIN = 12V, VOUT = 5V, IOUT = 3A, TJ = -40°C to +125°C unless otherwise noted.

Typical values are at TA = +25°C. (Continued)

4.989

4.986

4.983

4.980

7VIN DCM

7VIN CCM

12VIN DCM

12VIN CCM

18VIN DCM

18VIN CCM

PHASE 10V/DIV

VOUT 5V/DIV

4.977

4.974

VEN 10V/DIV

4.971

0

0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0

OUTPUT LOAD (A)

FIGURE 15. VOUT REGULATION vs LOAD 5V

PG 5V/DIV

1ms/DIV

FIGURE 16. START-UP VEN AT NO LOAD (DCM)

PHASE 10V/DIV

VOUT 5V/DIV

VEN 10V/DIV

PG 5V/DIV

1ms/DIV

FIGURE 17. START-UP VEN AT NO LOAD (CCM)

PHASE 10V/DIV

VOUT 5V/DIV

VEN 10V/DIV

PG 5V/DIV

50ms/DIV

FIGURE 18. SHUTDOWN VEN AT NO LOAD (DCM)

PHASE 10V/DIV

VOUT 5V/DIV

VEN 10V/DIV

PG 5V/DIV

50ms/DIV

FIGURE 19. SHUTDOWN VEN AT NO LOAD (CCM)

FN7968 Rev.2.00

Jan 15, 2016

PHASE 10V/DIV

VOUT 5V/DIV

VEN 10V/DIV

PG 5V/DIV

1ms/DIV

FIGURE 20. START-UP VEN AT 3A LOAD

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