ADP1109A Analog Devices, ADP1109A Datasheet - Page 3

• Manufacturer Part Number: ADP1109A
• Description: Micropower Low Cost Fixed 3.3 V/ 5 V/ 12 V and Adjustable DC-to-DC Converter
• Manufacturer: Analog Devices

Pin Mnemonic
1
2
3
4
5
6
7
8
Model
ADP1109AAN
ADP1109AAR
ADP1109AAN-3.3
ADP1109AAR-3.3
ADP1109AAN-5
ADP1109AAR-5
ADP1109AAN-12
ADP1109AAR-12
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADP1109A features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
REV. 0
V
NC
SW
PGND
GND
NC
SHUTDOWN
FB(SENSE)
IN
PIN FUNCTION DESCRIPTIONS
ORDERING GUIDE
Output
Voltage
ADJ
ADJ
3.3 V
3.3 V
5 V
5 V
12 V
12 V
Function
Input Supply Voltage.
No Connection.
Collector Node of Power Transistor.
Power Ground.
Ground.
No Connection.
When logic low is applied to this pin,
oscillator is shut down.
On the ADP1109A (Adjustable), this
pin goes directly to the comparator input.
On the ADP1109A-3.3, ADP1109A-5
and ADP1109A-12, this pin is connected
through the internal resistor that sets
the output voltage.
Plastic DIP
Small Outline IC
Package
Description
Plastic DIP
Small Outline IC
Plastic DIP
Small Outline IC
Plastic DIP
Small Outline IC
Package
Options
N-8
SO-8
N-8
SO-8
N-8
SO-8
N-8
SO-8
–3–
PIN CONFIGURATIONS
PGND
PGND
SW
V
NC
SW
V
NC
IN
8-Lead Plastic DIP
IN
NC = NO CONNECT
1
2
3
4
*FIXED VERSIONS
*FIXED VERSIONS
NC = NO CONNECT
1
2
3
4
8-Lead SOIC
(Not to Scale)
ADP1109A
ADP1109A
TOP VIEW
(Not to Scale)
(SO-8)
TOP VIEW
(N-8)
WARNING!
8
7
6
5
8
7
6
5
FB(SENSE)*
SHUTDOWN
NC
GND
FB(SENSE)*
SHUTDOWN
NC
GND
ADP1109A
ESD SENSITIVE DEVICE