Datasheet

REV.
Typical Performance Characteristics–ADM660/ADM8660
–5–
SUPPLY VOLTAGE – Volts
0
1.5 7 .5
SUPPLY CURRENT – mA
3.5 5.5
2.5
1.5
3.0
2.0
1.0
0.5
VOLTAGE DOUBLER
LV = OUT
LV = GND
LV = OPEN
TPC 1. Power Supply Current vs. Voltage
LOAD CURRENT – mA
–4.2
–3.0
–5.0
–3.8
–4.6
–3.4
0 100
OUTPUT VOLTAGE – Volts
20 40 60 80
100
40
0
60
20
80
EFFICIENCY – %
EFFICIENCY
V
OUT
TPC 2. Output Voltage and Efficiency vs. Load Current
LOAD CURRENT – mA
1.6
0
0.8
0.4
1.2
0 10020
OUTPUT VOLTAGE DROP
FROM SUPPLY VOLTAGE – Volts
40 60 80
V+ = +2.5V
V+ = +1.5V
V+ = +3.5V
V+ = +5.5V
V+ = +4.5V
TPC 3. Output Voltage Drop vs. Load Current
CHARGE-PUMP FREQUENCY – Hz
100
90
30
1k 1M10k 100k
70
60
50
40
80
POWER EFFICIENCY – %
I
L
= 10mA
I
L
= 1mA
I
L
= 50mA
I
L
= 80mA
TPC 4. Efficiency vs. Charge-Pump Frequency
CHARGE-PUMP FREQUENCY – kHz
3.5
3.0
0
1 100010
SUPPLY CURRENT – mA
100
1.5
2.0
1.0
0.5
2.5
LV = GND
VOLTAGE DOUBLER
LV = GND
VOLTAGE INVERTER
TPC 5. Power Supply Current vs. Charge-Pump
Frequency
LOAD CURRENT – mA
120
EFFICIENCY – %
100
0
0 10020 40 60 80
80
60
40
20
V+ = +5.5V
V+ = +4.5V
V+ = +6.5V
V+ = +1.5V
V+ = +2.5V
V+ = +3.5V
TPC 6. Power Efficiency vs. Load Current
C