MAX1927REUB Maxim Integrated Products, MAX1927REUB Datasheet - Page 6

• Manufacturer Part Number: MAX1927REUB
• Description: DC/DC Switching Converters 800mA PWM Step-Down DC/DC Converter
• Manufacturer: Maxim Integrated Products

Low-Output-Voltage, 800mA, PWM Step-Down
DC-DC Converters
(Circuits of Figure 3 and 4, T
6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
_______________________________________________________________________________________
0
2.6
(AC-COUPLED)
(AC-COUPLED)
3.1
MAXIMUM LOAD CURRENT
V
V
OUT
OUT
vs. INPUT VOLTAGE
= 1V
I
V
= 1.8V
LOAD
V
INPUT VOLTAGE (V)
3.6
OUT
OUT
LX
I
L
HEAVY-LOAD SWITCHING WAVEFORMS
4.1
4.6
A
V
LOAD TRANSIENT
= +25°C, unless otherwise noted.)
OUT
5.1
= 2.5V
100 s/div
400ns/div
5.6
SHDN
V
OUT
I
IN
Typical Operating Characteristics (continued)
100mV/div
900mA
500mA/div
250mA
10mV/div
200mA/div
5V/div
STARTUP WAVEFORM
1ms/div
(AC-COUPLED)
(AC-COUPLED)
V
V
OUT
OUT
V
LX
I
IN
L
LIGHT-LOAD SWITCHING WAVEFORMS
5V/div
1V/div
200mA/div
LINE TRANSIENT
SHDN
V
POK
OUT
2ms/div
1ms/div
POK WAVEFORM
20ms/div
10mV/div
10mV/div
5V/div
200mA/div
2V/div
4.2V
3V
5V/div
2V/div
2V/div