Typical operating characteristics – Rainbow Electronics MAX1703 User Manual
Page 5
MAX1703
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
_______________________________________________________________________________________
5
100
40
0.1
1
10
100
1000
10,000
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 5V)
50
MAX1703-01
LOAD CURRENT (mA)
EFFICIENCY (%)
60
80
70
90
V
IN
= 3.6V
V
IN
= 2.4V
V
IN
= 1.2V
PFM
PWM
100
40
0.1
1
10
100
1000
10,000
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 3.3V)
50
MAX1703-02
LOAD CURRENT (mA)
EFFICIENCY (%)
60
80
70
90
V
IN
= 2.4V
V
IN
= 1.2V
V
IN
= 0.9V
PFM
PWM
0
1
2
3
4
0
3
4
1
2
5
6
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
MAX1703-03
INPUT VOLTAGE (V)
BATTERY CURRENT (mA)
T
A
= +85°C
LOW-POWER MODE
T
A
= +25°C
T
A
= -40°C
0
0.5
1.0
2.0
1.5
2.5
0.5
3.0 3.5 4.0
1.0 1.5 2.0 2.5
4.5 5.0 5.5
SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1703-04
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (
µ
A)
T
A
= +85°C
INCLUDES ALL EXTERNAL
COMPONENT LEAKAGES.
CAPACITOR LEAKAGE
DOMINATES AT T
A
= +85°C
T
A
= +25°C,
T
A
= -40°C
1.2460
1.2470
1.2490
1.2480
1.2500
1.2510
1.2520
0
40
50
60
70
10
20
30
80
90
REFERENCE VOLTAGE
vs. REFERENCE CURRENT
MAX1703-07
REFERENCE CURRENT (
µ
A)
REFERENCE VOLTAGE (V)
V
IN
= 3.6V
V
OUT
= 5V
LOW-POWER MODE
2.0
0.6
0.01
0.1
1
10
100
1000
START-UP VOLTAGE vs. LOAD CURRENT
0.8
MAX1703-05
LOAD CURRENT (mA)
START-UP VOLTAGE (V)
1.0
1.2
1.6
1.4
1.8
V
OUT
= 5V
PWM MODE
1.2450
1.2490
1.2470
1.2510
1.2530
1.2550
-40
20
40
60
-20
0
80
100
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1703-06
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
9
100
1k
10k
100k
1M
10M
NOISE SPECTRUM
1
0
-1
MAX1703-14
FREQUENCY (Hz)
NOISE (mV
RMS
)
2
6
7
5
4
3
8
V
OUT
= 5V
V
IN
= 3.6V
I
LOAD
= 500mA
__________________________________________Typical Operating Characteristics
(V
IN
= +3.6V, V
OUT
= 5V, T
A
= +25°C, unless otherwise noted.)