ISL8023 데이터 시트보기 (PDF) - Intersil

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ISL8023

Compact Synchronous Buck Regulator

Intersil 

ISL8023, ISL8024

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 4A. (Continued)

1.529

1.830

1.524

1.519

1.514

1.509

1.504

3.3VIN PFM MODE

5VIN PFM MODE

3.3VIN PWM MODE

1.499 5VIN PWM MODE

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

IOUT (A)

FIGURE 11. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.5V)

1.824

1.818

3.3VIN PFM MODE

5VIN PFM MODE

1.812

1.806

1.800

3.3VIN PWM MODE

5VIN PWM MODE

1.794

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

IOUT (A)

FIGURE 12. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.8V)

2.540

2.532

2.524

2.516

3.3VIN PFM MODE

5VIN PFM MODE

2.508

3.3VIN PWM MODE

2.500

5VIN PWM MODE

2.492

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

IOUT (A)

FIGURE 13. VOUT REGULATION vs LOAD (1MHz, VOUT = 2.5V)

3.354

3.345

3.336

3.327

5VIN PFM MODE

3.318

3.309

5VIN PWM MODE

3.300

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

IOUT (A)

FIGURE 14. VOUT REGULATION vs LOAD (1MHz, VOUT = 3.3V)

1.815

1.810

1.805

0A LOAD

1.800

1.795

2A LOAD

1.790

4A LOAD

1.785

2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

VIN (V)

FIGURE 15. OUTPUT VOLTAGE REGULATION vs VIN (PWM VOUT = 1.8 )

1.836

1.828

1.820

0A LOAD

1.812

1.804

2A LOAD

1.796

4A LOAD

1.788

2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

VIN (V)

FIGURE 16. OUTPUT VOLTAGE REGULATION vs VIN (PFM VOUT = 1.8V)

9

FN7812.2

May 17, 2012

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