ADP1111AN-33 Analog Devices, ADP1111AN-33 Datasheet - Page 3

• Manufacturer Part Number: ADP1111AN-33
• Description: Micropower/ Step-Up/Step-Down SW Regulator; Adjustable and Fixed 3.3 V/ 5 V/ 12 V
• Manufacturer: Analog Devices

Model
ADP1111AN
ADP1111AR
ADP1111AN-3.3
ADP1111AR-3.3
ADP1111AN-5
ADP1111AR-5
ADP1111AN-12
ADP1111AR-12
*N = Plastic DIP, SO = Small Outline Package.
REV. 0
ABSOLUTE MAXIMUM RATINGS
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V
SW1 Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
SW2 Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
Feedback Pin Voltage (ADP1111) . . . . . . . . . . . . . . . . . 5.5 V
Switch Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . 500 mW
Operating Temperature Range
Storage Temperature Range . . . . . . . . . . . . . –65 C to 150 C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300 C
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 ADP1111 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.
ADP1111A . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 C to +70 C
INPUT
3V
Figure 1. 3 V to 5 V Step-Up Converter
10µF
(OPTIONAL)
TYPICAL APPLICATION
ORDERING GUIDE
ADP1111AR-5
GND
I
LIM
Output Voltage
ADJ
ADJ
3.3 V
3.3 V
5 V
5 V
12 V
12 V
SW2
SENSE
V
IN
SW1
CD54-220K
SUMIDA
22µH
MBRS120T3
Package*
N-8
SO-8
N-8
N-8
SO-8
N-8
SO-8
SO-8
33µF
5V
100mA
IN
–3–
Mnemonic
I
V
SW1
SW2
GND
AO
SET
FB/SENSE
LIM
IN
SW1
SW2
*FIXED VERSIONS
I
V
8-Lead Plastic DIP
LIM
IN
1
2
3
4
(Not to Scale)
TOP VIEW
(N-8)
ADP1111
Function
For normal conditions this pin is connected to
V
should be connected between I
Limiting the switch current to 400 mA is achieved
by connecting a 220
Input Voltage.
Collector Node of Power Transistor. For step-
down configuration, connect to V
configuration, connect to an inductor/diode.
Emitter Node of Power Transistor. For step-
down configuration, connect to inductor/diode.
For step-up configuration, connect to ground.
Do not allow this pin to go more than a diode
drop below ground.
Ground.
Auxiliary Gain (GB) Output. The open collector
can sink 300 A. It can be left open if unused.
Gain Amplifier Input. The amplifier’s positive
input is connected to SET pin and its negative
input is connected to the 1.25 V reference. It can
be left open if unused.
On the ADP1111 (adjustable) version this pin
is connected to the comparator input. On the
ADP1111-3.3, ADP1111-5 and ADP1111-12,
the pin goes directly to the internal application
resistor that sets output voltage.
IN
. When lower current is required, a resistor
PIN CONFIGURATIONS
8
7
6
5
PIN DESCRIPTIONS
GND
FB (SENSE)*
SET
A0
SW1
SW2
WARNING!
*FIXED VERSIONS
I
V
LIM
IN
8-Lead SOIC
resistor.
1
2
3
4
(Not to Scale)
(SO-8)
TOP VIEW
ADP1111
ESD SENSITIVE DEVICE
ADP1111
LIM
IN
and V
. For step-up
8
7
6
5
GND
FB (SENSE)*
SET
A0
IN
.