MAX668_02 datasheet(7/18 Pages) MAXIM

Part #	MAX668

Description	1.8V to 28V Input, PWM Step-Up Controllers in μMAX

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Manufacturer	MAXIM [Maxim Integrated Products]

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1.8V to 28V Input, PWM Step-Up

Controllers in µMAX

_______________________________________________________________________________________

7

EXITING SHUTDOWN

OUTPUT

VOLTAGE

5V/div

INDUCTOR

CURRENT

2A/div

SHUTDOWN

VOLTAGE

5V/div

MAX668, VIN = 5V, VOUT = 12V, LOAD = 1.0A, ROSC = 100kΩ,

LOW VOLTAGE, NON-BOOTSTRAPPED

500

µs/div

0V

0A

ENTERING SHUTDOWN

OUTPUT

VOLTAGE

5V/div

SHUTDOWN

VOLTAGE

5V/div

MAX668, VIN = 5V, VOUT = 12V, LOAD = 1.0A,

LOW VOLTAGE, NON-BOOTSTRAPPED

200

µs/div

0V

HEAVY-LOAD SWITCHING WAVEFORM

VOUT

200mV/div

AC-COUPLED

IL

1A/div

Q1, DRAIN

5V/div

MAX668, VIN = 5V, VOUT = 12V, ILOAD = 1.0A,

LOW VOLTAGE, NON-BOOTSTRAPPED

1

µs/div

0V

0A

LOAD-TRANSIENT RESPONSE

OUTPUT

VOLTAGE

AC-COUPLED

100mV/div

LOAD

CURRENT

1A/div

MAX668, VIN = 5V, VOUT = 12V, ILOAD = 0.1A TO 1.0A,

LOW VOLTAGE, NON-BOOTSTRAPPED

1ms/div

LIGHT-LOAD SWITCHING WAVEFORM

VOUT

100mV/div

AC-COUPLED

IL

1A/div

Q1, DRAIN

5V/div

MAX668, VIN = 5V, VOUT = 12V, ILOAD = 0.1A,

LOW VOLTAGE, NON-BOOTSTRAPPED

1

µs/div

0V

0A

Typical Operating Characteristics (continued)

(Circuits of Figures 2, 3, 4, and 5; TA = +25°C; unless otherwise noted.)

LINE-TRANSIENT RESPONSE

INPUT

VOLTAGE

5V/div

0V

OUTPUT

VOLTAGE

100mV/div

AC-COUPLED

MAX668, VIN = 5V TO 8V, VOUT = 12V, LOAD = 1.0A,

HIGH VOLTAGE, NON-BOOTSTRAPPED

20ms/div

Similar Part No. - MAX668_02

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	MAX668-MAX669	326Kb / 18P	1.8V to 28V Input, PWM Step-Up Controllers in 關MAX Rev 0a; 8/98
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Similar Description - MAX668_02

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	MAX668	341Kb / 18P	1.8V to 28V Input, PWM Step-Up Controllers in μMAX Rev 2; 1/12
	MAX668	326Kb / 18P	1.8V to 28V Input, PWM Step-Up Controllers in 關MAX Rev 0a; 8/98
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MAX668 Datasheet(PDF) 7 Page - Maxim Integrated Products

MAX668 Datasheet(HTML) 7 Page - Maxim Integrated Products

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