ISL80019(2013_01) 查看數據表（PDF） - Intersil

零件编号

产品描述 (功能)

比赛名单

ISL80019
(Rev.:2013_01)

Compact Synchronous Buck Regulators

Intersil 

ISL8002, ISL8002A, ISL80019, ISL80019A

Typical Performance Curves (Continued)

LX 5V/DIV

675mA MODE TRANSITION, COMPLETELY

ENTER TO PWM AT 770mA

VOUT RIPPLE 20mV/DIV

LX 5V/DIV

BACK TO PFM AT 121mA

VOUT RIPPLE 20mV/DIV

IL 2A/DIV

2µs/DIV

FIGURE 46. PFM TO PWM TRANSITION

FSW = 2MHz, VIN = 5V, MODE = PFM, TA = +25°C

LX 5V/DIV

IL 1A/DIV

2µs/DIV

FIGURE 47. PWM TO PFM TRANSITION

FSW = 2MHz, VIN = 5V, MODE = PWM, TA = +25°C

IL 2A/DIV

VOUT 2V/DIV

VOUT 0.5V/DIV

PG 2V/DIV

PG 5V/DIV

10µs/DIV

FIGURE 48. OVERVOLTAGE PROTECTION

FSW = 2MHz, VIN = 5V, MODE = PFM, TA = +25°C

1ms/DIV

FIGURE 49. OVER-TEMPERATURE PROTECTION

FSW = 2MHz, VIN = 5V, MODE = PWM, TA = +163°C

16

FN7888.1

January 7, 2013

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