ISL8033 查看數據表（PDF） - Intersil

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产品描述 (功能)

比赛名单

ISL8033

Dual 3A Low Quiescent Current High Efficiency Synchronous Buck Regulator

Intersil 

ISL8033, ISL8033A

Typical Operating Performance ISL8033

Unless otherwise noted, operating conditions are: TA = +25°C, VIN = 5V, EN = VIN, L1 = L2 = 1.5µH, C1 = C2 = C4 = 2x22µF, VOUT1 = 1.2V, VOUT2 = 1.8V,

IOUT1 = IOUT2 = 0A to 3A. (Continued)

2.490

3.270

2.485

2.480

5VIN

3.265

3.260

5VIN

2.475

3.255

2.470

2.465

3.3VIN

3.250

3.245

2.460

0.0

0.5

1.0

1.5

2.0

2.5

3.0

IOUT (A)

FIGURE 9. LOAD REGULATION, VOUT = 2.5V TA = +25°C

3.240

0.0

0.5

1.0

1.5

2.0

2.5

3.0

IOUT (A)

FIGURE 10. LOAD REGULATION, VOUT = 3.3V TA = +25°C

LX1 2V/DIV

LX2 2V/DIV

VOUT1 RIPPLE 20mV/DIV

IL1 0.5A/DIV

. VOUT2 RIPPLE 20mV/DIV

IL2 0.5A/DIV

FIGURE 11. STEADY STATE OPERATION AT NO LOAD CHANNEL 1

(PWM)

FIGURE 12. STEADY STATE OPERATION AT NO LOAD CHANNEL 2

(PWM)

LX1 2V/Div

LX1 2V/DIV

VOUT1 RIPPLE 20mV/DIV

IL1 2A/DIV

FIGURE 13. STEADY STATE OPERATION WITH FULL LOAD

CHANNEL 1

9

LX2 2V/DIV

VOUT1 RIPPLE 20mV/Div

VOUT2 RIPPLE 20mV/DIV

ILL212A2/ADI/VDiv

FIGURE 14. STEADY STATE OPERATION WITH FULL LOAD

CHANNEL 2

FN6854.2

March 24, 2011

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