ISL8002(2013_01) データシートの表示（PDF） - Intersil

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ISL8002
(Rev.:2013_01)

Compact Synchronous Buck Regulators

Intersil 

ISL8002, ISL8002A, ISL80019, ISL80019A

Typical Performance Curves (Continued)

2.505

2.500

2.495

5VIN PFM

5VIN PWM

3.3VIN PWM

3.3VIN PFM

3.335

3.330

3.325

5VIN PFM MODE

5VIN PWM MODE

2.490

3.320

2.485

3.315

2.480

3.310

2.475

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

OUTPUT LOAD (A)

FIGURE 16. VOUT REGULATION vs LOAD,

FSW = 2MHz, VOUT = 2.5V, TA = +25°C

3.305

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

OUTPUT LOAD (A)

FIGURE 17. VOUT REGULATION vs LOAD,

FSW = 2MHz, VOUT = 3.3V, TA = +25°C

LX 5V/DIV

VOUT 1V/DIV

VEN 1V/DIV

LX 5V/DIV

VOUT 1V/DIV

VEN 2V/DIV

PG 5V/DIV

1ms/DIV

FIGURE 18. START-UP AT NO LOAD

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

PG 5V/DIV

1ms/DIV

FIGURE 19. START-UP AT NO LOAD

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

LX 5V/DIV

VOUT 1V/DIV

LX 5V/DIV

VOUT 1V/DIV

VEN 2V/DIV

PG 5V/DIV

1ms/DIV

FIGURE 20. SHUTDOWN AT NO LOAD

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

11

VEN 2V/DIV

PG 5V/DIV

1ms/DIV

FIGURE 21. SHUTDOWN AT NO LOAD

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

FN7888.1

January 7, 2013

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