ADM8660 Analog Devices, ADM8660 Datasheet - Page 5

• Manufacturer Part Number: ADM8660
• Description: CMOS Switched-Capacitor Voltage Converter w/ Low Power Shutdown Pin
• Manufacturer: Analog Devices

Specifications of ADM8660

• Input Voltage (v): 1.5 - 7
• Vout Preset (v): -Vin
• Iout: 100mA
• Vout #2 (v): n/a
• Iout #2 (µa): n/a
• Vout #3 (v): n/a
• Iout #3 (µa): n/a
• Power Efficiency (%): 80%
• Supply Current: 4.5mA
• Shutdown Current, Max: 5µA
• Package: PDIP-8,SOIC-8

REV.
TPC 2. Output Voltage and Efficiency vs. Load Current
C
TPC 3. Output Voltage Drop vs. Load Current
–3.0
–3.4
–3.8
–4.2
–4.6
–5.0
3.0
2.5
2.0
1.5
1.0
0.5
1.6
1.2
0.8
0.4
0
1.5
TPC 1. Power Supply Current vs. Voltage
0
0
0
V+ = +1.5V
20
20
3.5
SUPPLY VOLTAGE – Volts
VOLTAGE DOUBLER
LOAD CURRENT – mA
LOAD CURRENT – mA
EFFICIENCY
7
40
40
V+ = +2.5V
V
OUT
LV = OUT
V+ = +3.5V
V+ = +5.5V
Typical Performance Characteristics–ADM660/ADM8660
LV = GND
60
60
LV = OPEN
5.5
80
80
V+ = +4.5V
100
.5
100
100
80
60
40
20
0
–5–
TPC 5. Power Supply Current vs. Charge-Pump
Frequency
100
90
80
70
60
50
40
30
120
100
TPC 4. Efficiency vs. Charge-Pump Frequency
3.0
2.0
1.0
3.5
2.5
1.5
0.5
80
60
40
20
0
0
1k
TPC 6. Power Efficiency vs. Load Current
1
0
I
L
I
L
I
= 80mA
L
I
L
= 50mA
= 1mA
= 10mA
20
V+ = +1.5V
CHARGE-PUMP FREQUENCY – Hz
CHARGE-PUMP FREQUENCY – kHz
10k
VOLTAGE DOUBLER
10
LOAD CURRENT – mA
40
V+ = +6.5V
LV = GND
60
LV = GND
VOLTAGE INVERTER
100k
V+ = +2.5V
V+ = +5.5V
100
V+ = +3.5V
80
V+ = +4.5V
1M
1000
100