MAX1636 Maxim, MAX1636 Datasheet - Page 7

• Manufacturer Part Number: MAX1636
• Description: Low-Voltage / Precision Step-Down Controller for Portable CPU Power
• Manufacturer: Maxim

_____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
STANDBY AND STARTUP RESPONSE
LOAD-TRANSIENT RESPONSE
SWITCHING WAVEFORMS
(V
_______________________________________________________________________________________
IN
OUT
(1.8V, PWM MODE)
= 7V, T
(PFM MODE)
= 1.8V, NO LOAD)
100 s/div
20 s/div
1ms/div
A
= +25°C, unless otherwise noted.)
Low-Voltage, Precision Step-Down
V
Controller for Portable CPU Power
OUT
= 1.8V
5V
0V
1A
0A
10A
5A LOAD CURRENT
0A
V
1V/div
V
5V/div
V
50mV/div
OUT
SHDN
OUT
V
INDUCTOR
CURRENT
V
50mV/div
LX
OUT
OVERVOLTAGE-PROTECTION WAVEFORMS
THROUGH a 0.5 RESISTOR)
SWITCHING WAVEFORMS
SWITCHING WAVEFORMS
(DROPOUT OPERATION)
(V
IN
(PWM MODE)
SHORTED TO V
10 s/div
5 s/div
1 s/div
OUT
V
OUT
= 5V
5V
0
4A
5V
0V
1A
2A
5V
0
0
-5A
-10A
0A
0A
V
20mV/div
V
INDUCTOR
CURRENT
V
20mV/div
V
INDUCTOR
CURRENT
V
100mV/div
V
INDUCTOR
CURRENT
LX
LX
OUT
DL
OUT
OUT
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