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ADP1111 датащи(PDF) 3 Page - Analog Devices

номер детали ADP1111
подробное описание детали  Micropower, Step-Up/Step-Down SW lator; Adjustable and Fixed 3.3 V, 5 V, 12 V
PDF  15 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADP1111 датащи(HTML) 3 Page - Analog Devices

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ADP1111
REV.A
3
ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Supply Voltage
36 V
SW1 Pin Voltage
50 V
SW2 Pin Voltage
−0.5 V to VIN
Feedback Pin Voltage (ADP1111)
5.5 V
Switch Current
1.5 A
Maximum Power Dissipation
500 mW
Operating Temperature Range
ADP1111A
0°C to 70°C
Storage Temperature Range
−65°C to +150°C
Lead Temperature (Soldering, 10 sec)
300°C
TYPICAL APPLICATION
10µF
(OPTIONAL)
ILIM
VIN
SW1
SW2
GND
ADP1111AR-5
SUMIDA
CD54-220K
22µH
5V
100mA
33µF
SENSE
3V
INPUT
MBRS120T3
Figure 1. 3 V to 5 V Step-Up Converter
ESD CAUTION
PIN DESCRIPTIONS
Mnemonic
Function
ILIM
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 Ω
resistor.
VIN
Input Voltage.
SW1
Collector Node of Power Transistor. For step-down
con-figuration, connect to VIN. For step-up configu-
ration, connect to an inductor/diode.
SW2
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.
GND
Ground.
AO
Auxiliary Gain (GB) Output. The open collector can
sink 300 μA. It can be left open if unused.
SET
Gain Amplifier Input. The amplifier’s positive input is
connected to SET pin and its negative input is con-
nected to the 1.25 V reference. It can be left open if
unused.
FB/SENSE
On the ADP1111 (adjustable) version this pin is con-
nected 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.
PIN CONFIGURATIONS
A0
ILIM
SW1
GND
VIN
SW2
*FIXED VERSIONS
FB (SENSE)*
SET
1
2
3
4
8
7
6
5
ADP1111
TOP VIEW
(Not to Scale)
8-Lead Plastic DIP
(N-8)
A0
ILIM
SW1
GND
VIN
SW2
*FIXED VERSIONS
FB (SENSE)*
SET
1
2
3
4
8
7
6
5
ADP1111
TOP VIEW
(Not to Scale)
8-Lead Plastic SOIC
(SO-8)



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