MAX1589A datasheet(4/12 Pages) MAXIM

Part #	MAX1589A

Description	Low-Input-Voltage, 500mA LDO Regulator with RESET in SOT and TDFN

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Manufacturer	MAXIM [Maxim Integrated Products]

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Low-Input-Voltage, 500mA LDO Regulator

with

R

RE

ES

SE

ET

T in SOT and TDFN

4

_______________________________________________________________________________________

DROPOUT VOLTAGE

vs. LOAD CURRENT

LOAD CURRENT (mA)

400

300

200

100

40

80

120

160

200

0

500

VOUT = +1.8V

VOUT = +3.0V

Typical Operating Characteristics (continued)

(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.)

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

FREQUENCY (kHz)

100

10

1

10

20

30

40

50

60

70

80

0

0.1

1000

IOUT = 10mA

VOUT = +3.0V

VOUT = +1.5V

VOUT = +0.75V

LINE-TRANSIENT RESPONSE

MAX1589A toc09

40

µs/div

3.5V

4V

1.5V

10mV/div

AC-COUPLED

500mV/div

VOUT

VIN

ILOAD = 100mA

VOUT = 1.5V

LINE-TRANSIENT RESPONSE

NEAR DROPOUT

MAX1589A toc10

40

µs/div

1.8V

2.5V

1.5V

10mV/div

AC-COUPLED

500mV/div

VOUT

VIN

ILOAD = 100mA

VOUT = 1.5V

LOAD-TRANSIENT RESPONSE

MAX1589A toc12

20

µs/div

100mA

500mA

50mV/div

AC-COUPLED

500mA/div

VOUT

IOUT

VIN = 3.6V

VOUT = 1.5V

LOAD-TRANSIENT RESPONSE

MAX1589A toc11

20

µs/div

20mA

200mA

20mV/div

AC-COUPLED

200mA/div

VOUT

IOUT

VIN = 1.8V

VOUT = 1.5V

0

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MAX1589A Datasheet(PDF) 4 Page - Maxim Integrated Products

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