Owner's manual

MAX1947
Low Input/Output Voltage
Step-Up DC-DC Converter with
RESET
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(V
IN
= 1.5V, Circuit of Typical Application Circuit, T
A
= +25°C, unless otherwise noted.)
1.74
1.76
1.80
1.78
1.82
1.84
0 10050 150 200 250 300 350
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX1947toc10
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
HEAVY-LOAD SWITCHING WAVEFORMS
MAX1947toc13
V
OUT
(AC-COUPLED)
I
L
V
LX
V
IN
(AC-COUPLED)
50mV/div
50mV/div
2V/div
500mA/div
2µs/div
LINE-TRANSIENT WAVEFORMS
MAX1947toc15
V
IN
V
OUT
(AC-COUPLED)
1.5V
1V
50mV/div
10µs/div
1.74
1.76
1.80
1.78
1.82
1.84
0.7 0.90.8 1.0 1.1 1.3 1.51.2 1.4 1.6 1.7
NO-LOAD OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX1947toc11
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
LIGHT-LOAD SWITCHING WAVEFORMS
MAX1947toc14
V
OUT
(AC-COUPLED)
I
L
V
LX
V
IN
(AC-COUPLED)
50mV/div
50mV/div
2V/div
500mA/div
2µs/div
LOAD-TRANSIENT WAVEFORMS
MAX1947toc16
I
LOAD
V
OUT
(AC-COUPLED)
200mA/div
50mV/div
10µs/div
1.74
1.76
1.80
1.78
1.82
1.84
-40 10-15 35 60 85
OUTPUT VOLTAGE
vs. TEMPERATURE
MAX1947toc12
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
I
LOAD
= 40mA