MAX1703 Maxim, MAX1703 Datasheet - Page 5

• Manufacturer Part Number: MAX1703
• Description: 1-Cell to 3-Cell / High-Power 1.5A / Low-Noise / Step-Up DC-DC Converter
• Manufacturer: Maxim

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