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ADP1110AN View Datasheet(PDF) - Analog Devices

Part Name
Description
Manufacturer
ADP1110AN Datasheet PDF : 16 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ADP1110
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage, Step-Up Mode . . . . . . . . . . . . . . . 15 V
Input Supply Voltage, Step-Down Mode . . . . . . . . . . . . . 36 V
SW1 Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
SW2 Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VIN
Feedback Pin Voltage (ADP1110) . . . . . . . . . . . . . . . . . . 5.5 V
Switch Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . 500 mW
Operating Temperature Range . . . . . . . . . . . . . 0°C to +70°C
Storage Temperature Range . . . . . . . . . . . . . –65°C to 150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300°C
TYPICAL APPLICATION
47µH
5V
1.5V
AA CELL*
1
2
ILIM
VIN
SW1 3
ADP1110-5
SENSE 8
GND SW2
5
4
15µF
TANTALUM
OPERATES WITH CELL VOLTAGE 1.0V
*ADD 10µF DECOUPLING CAPACITOR IF BATTERY IS
*MORE THAN 2' AWAY FROM ADP1110.
Figure 1. 1.5 V to 5 V Converter
Model
ADP1110AN
ADP1110AR
ADP1110AN-3.3
ADP1110AR-3.3
ADP1110AN-5
ADP1110AR-5
ADP1110AN-12
ADP1110AR-12
ORDERING GUIDE
Output Voltage
ADJ
ADJ
3.3 V
3.3 V
5V
5V
12 V
12 V
Package
N-8
SO-8
N-8
SO-8
N-8
SO-8
N-8
SO-8
PIN CONFIGURATIONS
8-Lead Plastic DIP
(N-8)
8-Lead SOIC
(SO-8)
ILIM 1
8 FB (SENSE)*
VIN 2 ADP1110 7 SET
SW1
3
TOP VIEW
(Not to Scale)
6
A0
SW2 4
5 GND
TJMAX = 90o, θJA = 130oC/W
*FIXED VERSIONS
ILIM 1
VIN 2
SW1 3
SW2 4
8 FB (SENSE)*
ADP1110 7 SET
TOP VIEW
(Not to Scale) 6 A0
5 GND
TJMAX = 90o, θJA = 150oC/W
*FIXED VERSIONS
Mnemonic
ILIM
VIN
SW1
SW2
GND
AO
SET
FB/SENSE
PIN DESCRIPTION
Function
For normal conditions this pin is connected to
VIN. When lower current is required, a resistor
should be connected between ILIM and VIN.
Limiting the switch current to 400 mA is
achieved by connecting a 220 resistor.
Input Voltage.
Collector Node of Power Transistor. For step-
down configuration, connect to VIN. For step-
up 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 collec-
tor can sink 300 µA. It can be left open if unused.
Gain Amplifier Input. The amplifier has posi-
tive input connected to SET pin and negative
input connected to 220 mV reference. It can be
left open if unused.
On the ADP1110 (adjustable) version this pin
is connected to the comparator input. On the
ADP1110-3.3, ADP1110-5 and ADP1110-12,
the pin goes directly to the internal application
resistor that set output voltage.
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 ADP1110 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.
WARNING!
ESD SENSITIVE DEVICE
REV. 0
–3–
 

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