ISL85402(2011) 查看數據表（PDF） - Intersil

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ISL85402
(Rev.:2011)

2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or Boost Buck Converter

Intersil 

ISL85402

Performance Curves (Continued)

85

80

75

VO = 20V

70

65

60

55 VO = 5V

VO = 12V

50

45

40

35

30

25

0

5

10

15

20

25

30

35

40

VIN (V)

FIGURE 11. IC DIE TEMPERATURE UNDER +25°C AMBIENT

TEMPERATURE, STILL AIR, 500kHz, IO = 2.5A

VOUT 2V/DIV

PHASE 20V/DIV

2ms/DIV

FIGURE 12. SYNCHRONOUS BUCK MODE, VIN 36V, IO 2A,

ENABLE ON

VOUT 2V/DIV

PHASE 20V/DIV

VOUT 2V/DIV

PHASE 20V/DIV

2ms/DIV

FIGURE 13. SYNCHRONOUS BUCK MODE, VIN 36V, IO 2A,

ENABLE OFF

VOUT 20mV/DIV (5V OFFSET)

PHASE 20V/DIV

5µs/DIV

FIGURE 15. SYNCHRONOUS BUCK WITH FORCE PWM MODE,

VIN 36V, IO 2A

10

2ms/DIV

FIGURE 14. VIN 36V, PREBIASED START-UP

VOUT 100mV/DIV (5V OFFSET)

IOUT 1A/DIV

PHASE 20V/DIV

1ms/DIV

FIGURE 16. VIN 24V, 0 TO 2A STEP LOAD, FORCE PWM MODE

FN7640.0

September 29, 2011

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