MAX687 データシートの表示（PDF） - Maxim Integrated

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MAX687

High-Accuracy, Low-Dropout Linear Regulators

Maxim Integrated 

High-Accuracy, Low-Dropout

Linear Regulators

____________________________Typical Operating Characteristics (continued)

(Circuits of Figures 1 and 2, VIN = 5V, Q1 = FZT749, TA = +25°C, unless otherwise noted.)

0.3000

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

0.2500

0.2000

0.1500

0.1000

0.0500

0

-55 -25

0 25 50 75 100 125

TEMPERATURE (°C)

OUTPUT VOLTAGE

vs. TEMPERATURE

3.315

3.310

3.305

3.300

3.295

3.290

3.285

3.280

-55 -25

0 25 50 75 100 125

TEMPERATURE (°C)

MAX687/MAX688

RIPPLE REJECTION vs. FREQUENCY

80

VIN = 4.3V Min

70

ILOAD = 20mA

60

50 VIN = 3.6V Min

ILOAD = 200mA

40

30

20

10

C2 = 20µF

0

10

100

1k

10k

100k

FREQUENCY (Hz)

LINE-TRANSIENT RESPONSE

LINE-TRANSIENT RESPONSE

MAX687/MAX688

POWER-UP AND EXIT FROM SHUTDOWN

ILOAD = 70mA

C1 = 2.2µF

C2 = 20µF

C3 = 10nF

VOUT

3.3V

1mV/div

VIN

3.6V

2ms/div

VIN

3.4V

ILOAD = 200mA

C1 = 2.2µF

C2 = 20µF

C3 = 10nF

LOAD-TRANSIENT RESPONSE

2ms/div

VOUT

3.3V

1mV/div

VIN

3.6V

VIN

3.4V

ILOAD = 500mA

C1 = 2.2µF

C2 = 68µF

C3 = 10nF

1ms/div

LOAD-TRANSIENT RESPONSE

VIN

5V/div

VOUT

1V/div

SHDN

5V/div

VOUT

3.3V

10mV/div

VOUT

3.3V

10mV/div

VIN = 3.4V

100µs/div

500mA

ILOAD

200mA/div

0mA

VIN = 3.5V

100µs/div

500mA

ILOAD

200mA/div

0mA

_______________________________________________________________________________________ 5

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