MAX8640YEXT25T(2007-07) View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX8640YEXT25T
(Rev.:2007-07)

Tiny 500mA, 4MHz/2MHz Synchronous Step-Down DC-DC Converters

Maxim Integrated 

Tiny 500mA, 4MHz/2MHz Synchronous

Step-Down DC-DC Converters

Typical Operating Characteristics (continued)

(VIN = 3.6V, VOUT = 1.5V, MAX8640Z, L = Murata LQH32CN series, TA = +25°C, unless otherwise noted.)

LIGHT-LOAD STARTUP WAVEFORM

(100Ω LOAD)

MAX8640Y/Z toc08

VSHDN

5V/div

1V/div

VOUT

0V

100mA/div

IIN

0mA

500mA/div

ILX

0mA

20μs/div

LINE-TRANSIENT RESPONSE

(4V TO 3.5V TO 4V)

MAX8640Y/Z toc10

VIN

1V/div

4V

HEAVY-LOAD STARTUP WAVEFORM

(5Ω LOAD)

MAX8640Y/Z toc09

VSHDN

5V/div

1V/div

VOUT

0V

100mA/div

IIN

0mA

ILX

500mA/div

0mA

20μs/div

LOAD-TRANSIENT RESPONSE

(5mA TO 250mA TO 5mA)

MAX8640Y/Z toc11

50m/div

VOUT

AC-COUPLED

VOUT

20mV/div

AC-COUPLED

ILX

200mA/div

0mA

20μs/div

ILX

500mA/div

200mA/div

IOUT

0mA

40μs/div

LOAD-TRANSIENT RESPONSE

(10mA TO 500mA TO 10mA)

MAX8640Y/Z toc12

VOUT

100mV/div

AC-COUPLED

ILX

500mA/div

0V

IOUT

200mA/div

40μs/div

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