MAX8969EWL33+ datasheet(7/15 Pages) MAXIM

Part #	MAX8969EWL33+

Description	Step-Up Converter for Handheld Applications

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Manufacturer	MAXIM [Maxim Integrated Products]

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_______________________________________________________________________________________ 7

Step-Up Converter

for Handheld Applications

Typical Operating Characteristics

(VIN = 3.6V, COUT = 22µF, X5R, 6.3V local and 10µF, X5R, 6.3V, 1µH inductor, circuit of Figure 1, TA = +25NC, unless otherwise noted.)

LIGHT-LOAD RIPPLE

MAX8969 toc15

AC-COUPLED

20mV/div

2V/div

0

VOUT

VLX

40µs/div

IOUT = 1mA, VIN = 3.6V

STARTUP (VOUT = 5V)

MAX8969 toc17

2V/div

0

2V/div

0

VEN

VOUT

VLX

200µs/div

COUT, TYP = 32µF,

TREN = GND,

IOUT = 10mA,

VIN = 3.2V

HARD-SHORT (VOUT = 5V)

MAX8969 toc19

2V/div

2A/div

0

2V/div

2A/div

0

VOUT

VLX

IOUT

VIN = 3.2V, 0.1I LOAD

ILX

20µs/div

STARTUP (VOUT = 3.7V)

MAX8969 toc16

2V/div

0

2V/div

0

VEN

VOUT

VLX

200µs/div

COUT, TYP = 32µF,

TREN = GND,

IOUT = 10mA,

VIN = 2.6V

HARD-SHORT (VOUT = 3.7V)

MAX8969 toc18

2V/div

2A/div

0

2V/div

2A/div

0

VOUT

VLX

IOUT

VIN = 3.2V, 0.1I LOAD

ILX

40µs/div

SHUTDOWN

MAX8969 toc20

2V/div

0

2V/div

VOUT

VEN

VLX

10I LOAD, TREN = GND

2µs/div

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MAX8969EWL33+ Datasheet(PDF) 7 Page - Maxim Integrated Products

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