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ADP1109AAN-33 반도체 회로 부품 판매점

Micropower Low Cost Fixed 3.3 V/ 5 V/ 12 V and Adjustable DC-to-DC Converter



Analog Devices 로고
Analog Devices
ADP1109AAN-33 데이터시트, 핀배열, 회로
a
Micropower Low Cost
Fixed 3.3 V, 5 V, 12 V and Adjustable
DC-to-DC Converter
FEATURES
Operates at Supply Voltages 2 V to 9 V
Fixed 3.3 V, 5 V, 12 V and Adjustable Output
Minimum External Components Required
Ground Current: 460 A
Oscillator Frequency: 120 kHz
Logic Shutdown
8-Lead DIP and SO-8 Packages
APPLICATIONS
Cellular Telephones
Single-Cell to 5 V Converters
Laptop and Palmtop Computers
Pagers
Cameras
Battery Backup Supplies
Portable Instruments
Laser Diode Drivers
Hand-Held Inventory Computers
GENERAL DESCRIPTION
The ADP1109A is a versatile step-up switching regulator. The
device requires only minimal external components to operate as
a complete switching regulator.
The ADP1109A-5 can deliver 100 mA at 5 V from a 3 V input
and the ADP1109A-12 can deliver 60 mA at 12 V from a 5 V
input. The device also features a logic controlled shutdown
capability that, when a logic low is applied, will shut down the
oscillator. The 120 kHz operating frequency allows for the use
of small surface mount components.
The gated oscillator capability eliminates the need for frequency
compensation.
ADP1109A
FUNCTIONAL BLOCK DIAGRAM
VIN SENSE
1.25V
REFERENCE
R2
250k
ADP1109A-3.3: R1 = 152k
ADP1109A-5: R1 = 83k
ADP1109A-12: R1 = 29k
COMPARATOR
SW
A1
R1
120kHz
OSCILLATOR
Q1
DRIVER
GND
SHUTDOWN
PGND
VIN FB
ADP1109A
1.25V
REFERENCE
COMPARATOR
SW
A1
120kHz
OSCILLATOR
Q1
DRIVER
GND
SHUTDOWN
PGND
TYPICAL APPLICATION
L1
33H
D1
3
VIN
1 VIN
SW SENSE 8
VOUT
5V 12V
ADP1109A-12
60mA
7 SHUTDOWN
PGND
GND
4
SHUTDOWN/PROGRAM
5
+ C1
22F
16V
Flash Memory VPP Generator
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1997


ADP1109AAN-33 데이터시트, 핀배열, 회로
ADP1109A–SPECIFICATIONS (0؇C TA 70؇C, VIN = 3 V unless otherwise noted)
Parameter
QUIESCENT CURRENT
INPUT VOLTAGE
COMPARATOR TRIP POINT
VOLTAGE
Conditions
Switch Off
VS Min Typ
IQ 460
VIN 2
1.20 1.25
COMPARATOR HYSTERESIS
ADP1109A
8
OUTPUT VOLTAGE
ADP1109A-3.3
ADP1109A-5
ADP1109A-12
OUTPUT VOLTAGE RIPPLE
2 V VIN 3 V
2 V VIN 5 V
2 V VIN 9 V
ADP1109A-3.3
ADP1109A-5
ADP1109A-12
VOUT
3.13
4.75
11.45
3.30
5.00
12.00
15
25
60
OSCILLATOR FREQUENCY
DUTY CYCLE
Full Load
fOSC 95 120
DC 57 67
SWITCH-ON TIME
tON
SWITCH SATURATION VOLTAGE
ADP1109A-3.3
ADP1109A-5
ADP1109A-12
ISW = 500 mA
VIN = 3 V
VIN = 3 V
VIN = 3 V
VCESAT
SWITCH LEAKAGE CURRENT
VSW = 9 V, TA = +25°C
SHUTDOWN PIN HIGH
VIH
SHUTDOWN PIN LOW
VIL
SHUTDOWN PIN INPUT CURRENT VSHUTDOWN = 4 V
IIH
SHUTDOWN PIN INPUT CURRENT VSHUTDOWN = 0 V
IIL
NOTES
All limits at temperature extremes are guaranteed via correlation using standard quality control methods.
Specifications subject to change without notice.
3.8 5.6
0.4
0.4
0.4
1
2.0
Max
580
9
1.30
12.5
3.47
5.25
12.55
35
50
120
155
77
7.4
0.8
0.8
0.8
10
0.8
10
20
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage, VOUT . . . . . . . . . . . . . . . . . . . . –0.4 V to 20 V
SW Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . –0.4 V to 50 V
Shutdown Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0 V
Switch Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 A
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . 300 mW
Operating Temperature Range . . . . . . . . . . . . 0°C to +70°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +300°C
*This is a stress rating only; operation beyond these limits can cause the device to
be permanently damaged.
Units
µA
V
V
mV
V
V
V
mV
mV
mV
kHz
%
µs
V
V
V
µA
V
V
µA
µA
–2– REV. 0




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ADP1109AAN-33 converter

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ADP1109AAN-33

Micropower Low Cost Fixed 3.3 V/ 5 V/ 12 V and Adjustable DC-to-DC Converter - Analog Devices