Typical operating characteristics (continued) – Rainbow Electronics MAX1703 User Manual
Page 6
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MAX1703
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
6
_______________________________________________________________________________________
_________________________________Typical Operating Characteristics (continued)
(V
IN
= +3.6V, V
OUT
= 5V, T
A
= +25°C, unless otherwise noted.)
260
290
280
270
310
300
320
330
340
-40
20
40
60
-20
0
80
100
FREQUENCY vs. TEMPERATURE
MAX1703-15
TEMPERATURE (°C)
FREQUENCY (kHz)
V
OUT
= 5V
V
OUT
= 3.3V
0.5
1.5
1.0
2.5
2.0
3.0
3.5
2.5
4.0
4.5
3.0
3.5
5.0
5.5
PEAK INDUCTOR CURRENT LIMIT
vs. OUTPUT VOLTAGE
MAX1703-16
OUTPUT VOLTAGE (V)
CURRENT LIMIT(A)
PWM
LOW POWER (PFM)
2
µ
s/div
I
LOAD
= 1.5A, C7 = 0.47
µ
F
HEAVY LOAD SWITCHING
MAX1703-08
2ms/div
V
OUT
IS AC COUPLED
LOAD CURRENT = 0A TO 1.5A
V
OUT
(50mV/div)
1.0A
0.5A
0A
LOAD-TRANSIENT RESPONSE
MAX1703-10
2ms/div
V
IN
= 2.6V TO 3.6V, V
OUT
IS AC COUPLED
V
OUT
(50mV/div)
V
IN
4V
2V
0V
LINE-TRANSIENT RESPONSE
MAX1703-09
1ms/div
V
IN
= 2.6V TO 3.6V, V
OUT
IS AC COUPLED
V
ON
V
OUT
(2V/div)
I
IN
(0.2A/div)
POWER-ON DELAY
(PFM MODE)
MAX1703-11