Typical operating characteristics – Rainbow Electronics MAX711 User Manual
Page 4
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
MAX710/MAX711
3.3V/5V or Adjustable,
Step-Up/Down DC-DC Converters
4
_______________________________________________________________________________________
90
50
0.1
10
1000
1
100
EFFICIENCY vs. LOAD CURRENT—
HIGH-EFFICIENCY AND LOW-NOISE MODES
(V
OUT
= 5V)
60
MAX710/711 TOC04
LOAD CURRENT (mA)
EFFICIENCY (%)
70
80
V
OUT
= 5V
V
IN
= 2.5V
N/E = GND
N/E = PS
ILIM = 0.8A
ILIM = 1.5A
60
10
0.01
10
1
1000
0.1
100
LINEAR-REGULATOR POWER-SUPPLY
REJECTION RATIO vs. FREQUENCY
20
MAX710/711 TOC08
FREQUENCY (kHz)
PSRR (dB)
30
40
50
55
15
25
35
45
90
50
0.1
10
1000
1
100
EFFICIENCY vs. LOAD CURRENT—
HIGH-EFFICIENCY AND LOW-NOISE MODES
(V
OUT
= 3.3V)
60
MAX710/711 TOC05
LOAD CURRENT (mA)
EFFICIENCY (%)
70
80
V
OUT
= 3.3V
V
IN
= 2.5V
ILIM = 0.8A
ILIM = 0.8A
ILIM = 1.5A
LOW-NOISE MODE
HIGH-EFFICIENCY MODE
ILIM = 1.5A
0
200
600
800
400
1200
1400
1000
1600
0
4
2
6
8
10
12
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
MAX710/711 TOC06
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
N/E = GND
ILIM = GND (1.5A)
ILIM = PS (0.8A)
0
0.2
0.6
0.4
0.8
1.0
1
3
4
5
2
6
8
7
9
10 11
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
MAX710/711 TOC09
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (µA)
1000
10
1.0
1.4
2.2
2.6
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
100
MAX710/711 TOC07
INPUT VOLTAGE (V)
MAXIMUM OUTPUT CURRENT (mA)
1.8
1.2
2.0
1.6
2.4
ILIM = GND
ILIM = PS
N/E = GND
N/E = PS
90
50
0.1
10
1000
1
100
EFFICIENCY vs. OUTPUT CURRENT—
HIGH-EFFICIENCY MODE
(V
OUT
= 5V)
60
MAX710/711 TOC01
OUTPUT CURRENT (mA)
EFFICIENCY (%)
70
80
V
IN
= 1V
V
OUT
= 5V
N/E = GND
V
IN
= 3.6V
V
IN
= 2.5V
V
IN
= 5.6V
V
IN
= 1.8V
90
50
0.1
10
1000
1
100
EFFICIENCY vs. OUTPUT CURRENT—
HIGH-EFFICIENCY MODE
(V
OUT
= 3.3V)
60
MAX710/711 TOC02
OUTPUT CURRENT (mA)
EFFICIENCY (%)
70
80
V
OUT
= 3.3V
N/E = GND
V
IN
= 2.5V
V
IN
= 1V
V
IN
= 1.8V
0
0.6
0.4
0.2
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
100
50
150
200
250
MINIMUM START-UP INPUT VOLTAGE
vs. LOAD CURRENT
MAX710/711 TOC03
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
V
OUT
= 5V
N/E = PS