MAX1534 datasheet(6/16 Pages) MAXIM

Part #	MAX1534

Description	High-Efficiency, Triple-Output, Keep-Alive Power Supply for Notebook Computers

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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6 / 16 page

High-Efficiency, Triple-Output, Keep-Alive

Power Supply for Notebook Computers

6

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Circuit of Figure 1, VIN = +12V, PRESET = GND, TA = +25°C, unless otherwise noted.)

0

40

20

80

60

120

100

140

614

10

18

22

26

NO-LOAD SUPPLY CURRENT

vs. VIN, CIRCUIT 1, ILIM = GND

VIN (V)

SHDN = IN

SHDN = GND

SHDN = IN

VOUT3 NOT CONNECTED

TO VLDOIN

0.4

0.7

0.6

0.5

0.8

0.9

1.0

1.1

1.2

1.3

1.4

614

10

18

22

26

PEAK SWITCH CURRENT

vs. VIN, CIRCUIT 1, ILIM = IN

VIN (V)

L = 10

µH

L = 15

µH

L = 22

µH

IOUT3 = 300mA

40

µs/div

BUCK LOAD TRANSIENT

1A

0

ILX

1A/div

VOUT3

200mV/div

AC-COUPLED

IOUT3

500mA/div

MAX1534 toc09

10V

0

500mA

VLX

10V/div

VIN = 12V, IOUT3 = 100mA TO 450mA

100

µs/div

LINE TRANSIENT

15V

10V

VOUT3

200mV/div

AC-COUPLED

VIN

5V/div

MAX1534 toc10

0

1A

ILX

500mA/div

VIN = 10V TO 15V, IOUT3 = 300mA

100

µs/div

LINE TRANSIENT NEAR DROPOUT

10V

5V

VOUT3

200mV/div

AC-COUPLED

VIN

5V/div

MAX1534 toc11

0

1A

ILX

500mA/div

VIN = 5.2V TO 10V, IOUT3 = 300mA

0

40

20

80

60

120

100

140

180

160

200

0

100 150 200

50

250 300 350

450

400

500

SWITCHING FREQUENCY

vs. LOAD CURRENT, CIRCUIT 1, ILIM = IN

IOUT3 (mA)

VIN = 20V

VIN = 12V

VIN = 7V

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