ADM8660 Analog Devices, ADM8660 Datasheet - Page 4

• 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

ADM660/ADM8660
Mnemonic
FC
CAP+
GND
CAP–
OUT
LV
OSC
SD
V+
Function
Frequency Control Input for Internal Oscillator
and Charge Pump. With FC = Open (ADM660)
or connected to GND (ADM8660), f
with FC = V+, f
Positive Charge-Pump Capacitor Terminal.
Power Supply Ground.
Negative Charge-Pump Capacitor Terminal.
Output, Negative Voltage.
Low Voltage Operation Input. Connect to GND
when input voltage is less than 3.5 V. Above
3.5 V, LV may be connected to GND or left
unconnected.
ADM660: Oscillator Control Input. OSC is
connected to an internal 15 pF capacitor. An
external capacitor may be connected to slow the
oscillator. An external oscillator may also be
used to overdrive OSC. The charge-pump
frequency is equal to 1/2 the oscillator frequency.
ADM8660: Shutdown Control Input. This in-
put, when high, is used to disable the charge
pump thereby reducing the power consumption.
Positive Power Supply Input.
Inverter Configuration
CP
= 120 kHz.
CAP+
CAP–
GND
FC
1
2
3
4
(Not to Scale)
ADM660
TOP VIEW
PIN FUNCTION DESCRIPTIONS
CP
= 25 kHz;
PIN CONNECTIONS
CAP+
CAP–
GND
8
7
6
5
NC
NC
NC
NC
FC
V+
OSC
LV
OUT
1
2
3
4
5
6
7
NC = NO CONNECT
8
16-Lead
8-Lead
(Not to Scale)
ADM660
TOP VIEW
–4–
Mnemonic
FC
CAP+
GND
CAP–
OUT
LV
OSC
V+
CAP+
CAP–
GND
FC
16
15
14
13
12
11
10
9
1
2
3
4
NC
NC
V+
OSC
LV
OUT
NC
NC
(Not to Scale)
ADM8660
TOP VIEW
Doubler Configuration (ADM660 Only)
Function
Frequency Control Input for Internal Oscillator
and Charge Pump. With FC = Open, f
25 kHz; with FC = V+, f
Positive Charge-Pump Capacitor Terminal.
Positive Input Supply.
Negative Charge-Pump Capacitor Terminal.
Ground.
Low Voltage Operation Input. Connect to OUT.
Must be left unconnected in this mode.
Doubled Positive Output.
8
7
6
5
V+
SD
LV
OUT
CP
= 120 kHz.
CP
REV.
=
C