ISL85001IRZ datasheet(8/15 Pages) INTERSIL

Part #	ISL85001IRZ

Description	1A Standard Buck PWM Regulator

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Manufacturer	INTERSIL [Intersil Corporation]

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8

FN6769.1

March 17, 2009

FIGURE 8. VOUT REGULATION vs LOAD, 500kHz, 1.8VOUT

FIGURE 9. VOUT REGULATION vs LOAD, 500kHz, 2.5VOUT

FIGURE 10. VOUT REGULATION vs LOAD, 500kHz, 3.3VOUT

FIGURE 11. VOUT REGULATION vs LOAD, 500kHz, 5VOUT

FIGURE 12. STEADY STATE OPERATION AT NO LOAD

(5µs/DIV)

FIGURE 13. STEADY STATE OPERATION AT FULL LOAD

(1µs/DIV)

Typical Performance Curves

Unless otherwise noted, operating conditions are: TA = +25°C, VIN = 12V, EN = VDD, L = 22µH,

C9 = 10µF, C11 = 47µF, IOUT = 0A to 1A. See “VIN (Pins 11, 12)” on page 6. (Continued)

1.806

1.807

1.808

1.809

1.810

1.811

1.812

1.813

1.814

0.00.2

0.40.6

0.81.0

OUTPUT LOAD (A)

12VIN

25VIN

5VIN

2.498

2.499

2.500

2.501

2.502

2.503

2.504

2.505

2.506

0.0

0.2

0.4

0.6

0.8

1.0

OUTPUT LOAD (A)

12VIN

25VIN

5VIN

3.314

3.316

3.318

3.320

3.322

3.324

3.326

3.328

3.330

0.0

0.2

0.4

0.6

0.8

1.0

OUTPUT LOAD (A)

12VIN

25VIN

7VIN

4.91

4.92

4.93

4.94

4.95

4.96

4.97

4.98

4.99

0.1

0.3

0.5

0.7

0.9

OUTPUT LOAD (A)

12VIN

25VIN

7VIN

PHASE 5V/DIV

VOUT RIPPLE

20mV/DIV

IL 0.1A/DIV

PHASE 5V/DIV

VOUT RIPPLE

20mV/DIV

IL 0.5A/DIV

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