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PDF AIC2302 Data sheet ( Hoja de datos )
| Número de pieza | AIC2302 | |
| Descripción | PWM Step-Down DC/DC Converter | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC2302
700mA Synchronous PWM Step-Down
DC/DC Converter
FEATURES
2.5V to 5.5V Input Voltage Range
700mA Guaranteed Output Current
Up to 95% Efficiency
Low RDS(ON) Internal Switche: 280mΩ
No Schottky Diode Required
100% Duty Cycle in Low Dropout Operation
Operating Frequency: 1.5MHz
Accurate Reference 0.6V Provides Low
Output Voltages
APPLICATIONS
LCD TV
Multi-function Peripheral
Cellular Phones
CPU I/O Supplies
Cordless Phones
PDAs and Handy-Terminals
Battery-Operated Devices (1 Li-Ion or 3
NiMH/ NiCd)
APPLICATIONS CIRCUIT
DESCRIPTION
The AIC2302 is a low-noise, pulse-width-
modulated (PWM), DC-DC step-down converter.
The device is available in an adjustable version
and fixed output voltages of 1.0V, 1.2V, 1.8V,
and 3.3V. The device features an internal
synchronous rectifier for high efficiency; it
requires no external Schottky diode. Shutdown
mode places the device in standby, reducing
supply current to under 1µA. Other features of
the AIC2302 include high efficiency, low
dropout voltage, short circuit protection, over
temperature protection, and over voltage
protection. It is available in a small 5 pins SOT-
23 package.
Fig. 1 Fixed Step-Down DC/DC Converter
Analog Integrations Corporation
Si-Soft Research Center
DS-2302G-01 20120531
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC2302
ELECTRICAL CHARACTERISTICS
(TA=25C, VIN=3.6V unless otherwise specified.) (Note 1)
PARAMETER
CONDITIONS SYMBOL
MIN
TYP MAX UNITS
Input Voltage Range
VIN 2.5
5.5 V
Output Adjustment Range
VOUT
0.6V
VIN-0.3V
V
Reference Voltage
FB Input Current
P-Channel On-Resistance
N-Channel On-Resistance
VFB = VIN
IOUT = 0.2A
IOUT = 0.2A
VREF 0.588 0.6 0.612
V
IFB -50
50 nA
PRDS(ON)
280 390 m
NRDS(ON)
250 390 m
LX Leakage Current
VLX=0V or VLX=3.6V
-1
1 uA
Peak Inductor Current
Quiescent Current
Shutdown Supply Current
EN High-Level Input Voltage
VIN = 5V
IOUT = 0mA,
VFB=0.78V
EN = GND
VIN=2.5V to 5.5V
IPK 0.9 1.1
A
IQ 65 85 A
ISHDN
0.1 1 A
VEN_H
1.5
V
EN Low-Level Input Voltage
VIN=2.5V to 5.5V
VEN_L
0.4 V
Oscillator Frequency
fOSC 1.2 1.5 1.8 MHz
Maximum Duty Cycle
Thermal Shutdown Temperature
DMAX
100
150
%
°C
Thermal Shutdown Hysteresis
25 °C
Note 1: Specifications are production tested at TA=25C. Specifications over the -40C to 85C operating tem-
perature range are assured by design, characterization and correlation with Statistical Quality Con-
trols (SQC).
5
5 Page 
PHYSICAL DIMENSIONS
SOT-23-5
D
AIC2302
A Ae
e1
SEE VIEW B
WITH PLATING
b
BASE METAL
SECTION A-A
L
L1
VIEW B
GAUGE PLANE
SEATING PLANE
Note : 1. Refer to JEDEC MO-178AA.
2. Dimension "D" does not include mold flash, protrusions
or gate burrs. Mold flash, protrusion or gate burrs shall not
exceed 10 mil per side.
3. Dimension "E1" does not include inter-lead flash or protrusions.
4. Controlling dimension is millimeter, converted inch
dimensions are not necessarily exact.
S
Y
M
B
O
L
A
A1
A2
b
c
D
E
E1
e
e1
L
L1
θ
SOT-23-5
MILLIMETERS
MIN.
0.95
0.00
0.90
0.30
0.08
2.80
2.60
1.50
0.95 BSC
1.90 BSC
0.30
0.60 REF
0°
MAX.
1.45
0.15
1.30
0.50
0.22
3.00
3.00
1.70
0.60
8°
Note:
Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any circuitry other than
circuitry entirely embodied in an AIC product; nor for any infringement of patents or other rights of third parties that may result from its use. We
reserve the right to change the circuitry and specifications without notice.
Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or systems are
devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and whose failure to perform, when
properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the
user.
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AIC2302.PDF ] | |
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