MAX8640Z Maxim Integrated Products, MAX8640Z Datasheet - Page 4

• Manufacturer Part Number: MAX8640Z
• Description: 4MHz/2MHz Synchronous Step-Down DC-DC Converters
• Manufacturer: Maxim Integrated Products

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Tiny 500mA, 4MHz/2MHz Synchronous
Step-Down DC-DC Converters
4
(V
IN
_______________________________________________________________________________________
= 3.6V, V
OUT
V
SHDN
V
V
OUT
OUT
V
I
I
I
LX
= 1.5V, MAX8640Z, L = Murata LQH32CN series, T
IN
IN
LX
LIGHT-LOAD STARTUP WAVEFORM
LINE-TRANSIENT RESPONSE
(4V TO 3.5V TO 4V)
(100Ω LOAD)
20μs/div
20μs/div
MAX8640Y/Z toc08
MAX8640Y/Z toc10
V
Typical Operating Characteristics (continued)
I
OUT
OUT
I
LX
5V/div
1V/div
0V
100mA/div
0mA
500mA/div
0mA
1V/div
4V
20mV/div
AC-COUPLED
200mA/div
0mA
LOAD-TRANSIENT RESPONSE
(10mA TO 500mA TO 10mA)
40μs/div
A
= +25°C, unless otherwise noted.)
V
MAX8640Y/Z toc12
SHDN
V
V
I
OUT
OUT
OUT
I
I
I
LX
LX
IN
HEAVY-LOAD STARTUP WAVEFORM
100mV/div
AC-COUPLED
500mA/div
0V
200mA/div
LOAD-TRANSIENT RESPONSE
(5mA TO 250mA TO 5mA)
(5Ω LOAD)
20μs/div
40μs/div
MAX8640Y/Z toc09
MAX8640Y/Z toc11
5V/div
1V/div
0V
100mA/div
0mA
500mA/div
0mA
50m/div
AC-COUPLED
500mA/div
200mA/div
0mA