MAX797CPE 查看數據表（PDF） - Maxim Integrated

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MAX797CPE

Step-Down Controllers with Synchronous Rectifier for CPU Power

Maxim Integrated 

Step-Down Controllers with

Synchronous Rectifier for CPU Power

____________________________Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

MAX796

MAXIMUM SECONDARY CURRENT

vs. SUPPLY VOLTAGE, 3.3V/5V CIRCUIT

1050

IOUT (MAIN) = 2A

900

750

IOUT (MAIN) = 0A

600

450

300

CIRCUIT OF FIGURE 12

150

TRANSFORMER = TDK 1.5:1

VSEC ≥ 4.8V

0

0 3 6 9 12 15 18 21 24

SUPPLY VOLTAGE (V)

MAX799

MAXIMUM SECONDARY CURRENT

vs. SUPPLY VOLTAGE, ±5V CIRCUIT

800

IOUT (MAIN) = 0A

700

600

500

400

IOUT (MAIN) = 1A

300

CIRCUIT OF FIGURE 13

200

TRANSFORMER = TTI5926

VSEC ≤ -5.1V

100

0

0 4 8 12 16 20 24 28 32

SUPPLY VOLTAGE (V)

PULSE-WIDTH-MODULATION MODE WAVEFORMS

IDLE-MODE WAVEFORMS

LX VOLTAGE

10V/div

+5V OUTPUT

50mV/div

ILOAD = 1A, VIN = 16V,

CIRCUIT OF FIGURE 1

500ns/div

+5V OUTPUT

VOLTAGE

50mV/div

200μs/div

ILOAD = 100mA, VIN = 10V,

CIRCUIT OF FIGURE 1

+5V LOAD-TRANSIENT RESPONSE

3A

LOAD CURRENT

0A

2V/div

+5V OUTPUT

50mV/div

200μs/div

VIN = 15V, CIRCUIT OF FIGURE 1

8 _______________________________________________________________________________________

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