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MAX1735

200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23

Maxim Integrated 

200mA, Negative-Output, Low-Dropout

Linear Regulator in SOT23

Typical Operating Characteristics (continued)

(Circuit of Figure 2, VIN = -4.0V, VOUT = -3.0V, TA = +25°C, unless otherwise specified.)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

70

60

50

COUT = 10µF

40

30

20

COUT = 1.0µF

10

0

1 10 100 1k 10k 100k 1M

FREQUENCY (Hz)

OUTPUT NOISE DENSITY

vs. FREQUENCY

10

1

0.1

0.01

10

1k

100k

FREQUENCY (Hz)

OUTPUT NOISE

(10Hz TO 1MHz)

500µV/div

COUT = 1µF

ILOAD = 50mA

TIME (1ms/div)

REGION OF STABLE ESR

vs. LOAD CURRENT

100

COUT = 1µF

10

1

LINE-TRANSIENT RESPONSE

MAX1735 toc11

VOUT

50mV/div

0.1

REGION OF STABILITY

0.01

VIN

1V/div

0.001

0 20 40 60 80 100 120 140 160 180 200

LOAD CURRENT (mA)

LOAD-TRANSIENT RESPONSE

(NORMAL OPERATION)

MAX1735 toc12

ILOAD STEP

0 to 50mA

TIME (100µs/div)

LOAD-TRANSIENT RESPONSE

(NEAR DROPOUT)

MAX1735 toc13

ILOAD STEP

0 to 50mA

VOUT

10mV/div

VOUT

10mV/div

TIME (100µs/div)

TIME (100µs/div)

4 _______________________________________________________________________________________

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