MAX6469UT33AD3(2003) Просмотр технического описания (PDF) - Maxim Integrated

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MAX6469UT33AD3
(Rev.:2003)

300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit

Maxim Integrated 

300mA LDO Linear Regulators with Internal

Microprocessor Reset Circuit

Typical Operating Characteristics (continued)

(VIN = 5V, VOUT = 3.3V, COUT = 3.3µF, TA = +25°C, unless otherwise noted.)

DROPOUT VOLTAGE vs. LOAD CURRENT

125

VOUT = 3.3V

COUT = 3.3µF

100

75

50

25

0

0 50 100 150 200 250 300

LOAD CURRENT (mA)

PSRR vs. FREQUENCY

0

VOUT = 3.3V

COUT = 3.3µF

-10 ILOAD = 30mA

-20

-30

-40

-50

-60

0.01

0.1

1

10 100 1000

FREQUENCY (kHz)

REGION OF STABLE COUT ESR

vs. LOAD CURRENT

5

4

3

COUT = 4.7µF

2

COUT = 3.3µF

1

STABLE REGION

0

0 50 100 150 200 250 300

LOAD CURRENT (mA)

OUTPUT NOISE

VIN = 4.5V

VOUT = 3.3V

ILOAD = 100mA

MAX6469 toc07

OUTPUT NOISE vs. FREQUENCY

100

VIN = 2.5V

VOUT = 1.5V

80 IOUT = 100mA

60

100µV/div

40

20

500µs/div

0

10

100

1k

10k

100k

FREQUENCY (Hz)

STARTUP RESPONSE

MAX6469 toc10

VIN

2V/div

LOAD-TRANSIENT RESPONSE

MAX6469 toc11

SHUTDOWN RESPONSE

MAX6469 toc09

VSHDN

5V/div

ILOAD = 50mA

20ms/div

VOUT

2V/div

LOAD-TRANSIENT RESPONSE

NEAR DROPOUT

MAX6469 toc12

VIN = 5V

VOUT = 3.3V

ILOAD = 100mA

VOUT

2V/div

VOUT

20mV/div

VOUT

5mV/div

10µs/div

100µs/div

10µs/div

_______________________________________________________________________________________ 5

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