ISL8025 查看數據表（PDF） - Intersil

零件编号

产品描述 (功能)

比赛名单

ISL8025

Compact Synchronous Buck Regulators

Intersil 

ISL8025, ISL8025A

Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 5V, EN = VIN,

SYNC = VIN, L = 1.0µH, C1 = 22µF, C2 = 2 x 22µF, IOUT = 0A to 5A). (Continued)

PHASE 5V/DIV

VOUT 1V/DIV

500mA MODE TRANSITION,

COMPLETELY ENTER TO PWM AT 590mA

IL 5A/DIV

PG 5V/DIV

50µs/DIV

FIGURE 43. OVERCURRENT PROTECTION

VOUT1 RIPPLE 20mV/DIV

IL 1A/DIV

2µs/DIV

FIGURE 44. PFM TO PWM TRANSITION

Back to PFM at 420mA

PHASE 5V/DIV

VOUT1 RIPPLE 20mV/DIV

IL 1A/DIV

2µs/DIV

FIGURE 45. PWM TO PFM TRANSITION

PHASE 5V/DIV

VOUT 1V/DIV

IL 2A/DIV

PG 5V/DIV

20µs/DIV

FIGURE 46. OVERVOLTAGE PROTECTION

VOUT 1V/DIV

PG 2V/DIV

2ms/DIV

FIGURE 47. OVER-TEMPERATURE PROTECTION

15

FN8357.0

February 20, 2013

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