MAX1837 datasheet(6/13 Pages) MAXIM

Part #	MAX1837

Description	24V Internal Switch, 100% Duty Cycle, Step-Down Converters

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Manufacturer	MAXIM [Maxim Integrated Products]

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6 / 13 page

24V Internal Switch, 100% Duty Cycle,

Step-Down Converters

6

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), VIN = 12V, SHDN = IN, TA = +25°C.)

100

µs/div

MAX1837EUT50

LOAD TRANSIENT

A: IOUT = 10mA to 250mA, 200mA/div

B: VOUT = 5V, 20mV/div

C: IL, 500mA/div

VIN = 12V, FIGURE 6

400mA

200mA

5.02V

0

B

A

C

MAX1836/7 toc14

5.00V

4.98V

750mA

250mA

0

400

µs/div

MAX1837EUT50

LINE TRANSIENT

A: VIN = 9V to 18V, 10V/div

B: VOUT = 5V, ROUT = 100

Ω, 100mV/div

C: IL, 500mA/div

FIGURE 6

20V

10V

5.1V

0

B

A

C

MAX1836/7 toc15

5.0V

4.9V

500mA

0

400

µs/div

MAX1837EUT50

LINE TRANSIENT NEAR DROPOUT

A: VIN = 5V to 12V, 5V/div

B: VOUT = 5V, ROUT = 100

Ω, 100mV/div

C: IL, 500mA/div

FIGURE 6

15V

10V

5.1V

5V

B

A

C

MAX1836/7 toc16

5.0V

4.9V

500mA

0

200

µs/div

MAX1837EUT50

STARTUP WAVEFORM

A: VSHDN = 0 to 2V, 2V/div

B: VOUT = 5V, ROUT = 100

Ω, 2V/div

C: IL, 500mA/div

VIN = 12V, FIGURE 6

2V

0

2V

4V

B

A

C

MAX1836/7 toc17

0

500mA

0

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