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PDF AIC1702 Data sheet ( Hoja de datos )
| Número de pieza | AIC1702 | |
| Descripción | Ultra Low Quiescent Curent LDO Voltage Regulator | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AIC1702 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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AIC1702
350mA, 3μA Ultra Low Quiescent Curent LDO
Voltage Regulator
FEATURES
Input Voltage 2.0V~6.8V
Output Voltage 0.8V~5.0V
550mV Typical Dropout Voltage at 350mA load
current and 3.3V output voltage
Ultra Low Quiescent Current: 3μA
Line Regulation, typical: 2mV
Load Regulation, typical: 2mV
Current Limiting and Thermal Protection
Stable with 1μF Input & Output Ceramic Capaci-
tor
Available in SOT-23, SOT-23-5, SOT-89, DFN-6
2mmx2mm
GENERAL DESCRIPTION
The AIC1702 is an Ultra Low Quiescent Current,
low dropout voltage regulator. The output voltages
are of 0.8V, 1.0V, 1.2V, 1.5V, 1.8V, 2.0V, 2.5V,
3.0V, 3.3V and 5V. Dropout voltage of 200mV is
guaranteed at 350mA output current and 3.3V
output voltage. The low quiescent and wide input
voltage range make this device ideal for portable
microprocessor applications.
The AIC1702 requires output ceramic capacitor of a
minimum 1μF for stability. Built-in output current
limiting and thermal limiting provide maximal
protection to the AIC1702 against fault conditions.
APPLICATIONS
Smoke Detectors
Battery-Powered Alarms / Smart Battery Packs
PDAs / Handy Terminals
Real-time Clocks/ CMOS Backup Pow
Laptop, Palmtops, Notebook Computer
TYPICAL APPLICATION CIRCUIT
Analog Integrations Corporation 3A1, No.1 Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-1702G-02 20120327
1
1 page  
AIC1702
ELECTRICAL CHARACTERISTICS (VIN=Vout+1V, CIN=COUT=1μF, TA=25C,
unless otherwise specified.) (Note1)
PARAMETER
Operating Voltage
Output Voltage Accuracy
CONDITIONS
SYMBOL MIN.
VIN 2.0
VOUT≧1.0V, VIN = VOUT + 1.0V
VOUT < 1.0V, VIN = 2.0V
VOUT
-2.0
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Short Circuit Current
IOUT = 1mA, (Note2)
IOUT=1mA~350mA
VOUT = 3.3V, IOUT=350mA
VOUT≧1.5V , VIN = VOUT + 1.0V
VOUT < 1.5V, VIN = 2.5V
VOUT =0V (Note 3)
VLIR
VLOR
VDROP
IIL
IIL
ISHORT
400
350
Output Voltage Temperature
Coefficient
-40°C ≦ TA ≦ 125°C
TC
GND Pin Current
IOUT=1mA
IOUT=350mA (Note 3)
IGND
Shutdown Standby Current
VEN=0 or VEN=VIN
I STBY
Ripple Rejection
F=1kHz, COUT=1μF
PSRR
Shutdown Pin Current
VEN = VIN≦6.8V or GND
IEN
Shutdown Exit Delay Time
IOUT = 30mA
t
Max Output Discharge Resis-
tance to GND during Shut-
down
RDSON_C
LMP
VEN threshold
High threshold
Low threshold
VENH
VENL
Thermal Shutdown Tempera-
ture
TSD
Thermal Shutdown Hystere-
sis
TSD
1.6
TYP. MAX. UNITS
6.8 V
+2.0
%
2 15 mV
2 20 mV
550 mV
500 mA
mA
350 mA
100 ppm/°C
3 6 μA
3 6 μA
0.2 μA
40 dB
0 100 nA
0.5 mS
20 40 Ω
V
0.4 V
135 ℃
25 ℃
Note 1: Specifications are production tested at T =25°C. Specifications over the -40°C to 85°C operating
temperature range are assured by designA, characterization and correlation with Statistical Quality
Controls (SQC).
Note 2: VOUT≧1.0V, VIN = VOUT + 1.0V to 6.8V
VOUT < 1.0V, VIN = 2.0V to 6.8V
Note 3: VOUT≧1.5V, VIN = VOUT + 1.0V
VOUT < 1.5V, VIN = 2.5V
5
5 Page 
AIC1702
APPLICATION INFORMATION
The AIC1702 is a high performance linear regulator
that provides low-dropout voltage and low quiescent-
current. The device is available in a fixed output
voltages ranging from 0.8V to 5.0V, and the device can
supply loads up to 350mA.
condition. When the junction temperature exceeds
TJ=135ºC, the thermal-limiting circuit turns off the pass
transistor and allows the IC to cool. For continuous
load condition, maximum rating of junction temperature
must not be exceeded.
Capacitor Selection
Linear regulators require input and output capacitors to
maintain stability. Input capacitor with a 1F, output
capacitor with a 1F ceramic output capacitor is
recommended. When choosing the input and output
ceramic capacitors, X5R and X7R types are
recommended because they retain their capacitance
over wider ranges of voltage and temperature than
other types.
Current Limit
The AIC1702 includes a current limiter, which monitors
and controls the maximum output current. If the output
is overloaded or shorted to ground, this can protect the
device from being damaged.
Dropout Voltage
The minimum input-output voltage differential (dropout)
determines the lowest usable supply voltage. The
dropout voltage is a function of drain-to-source on
resistance multiplied by the load current.
Thermal Protection
The AIC1702 includes a thermal-limiting circuit, which
is designed to protect the device against overload
APPLICATION CIRCUIT
Power Dissipation
The maximum power dissipation of AIC1702 depends
on the thermal resistance of its case and circuit board,
the temperature difference between the die junction
and ambient air, and the rate of airflow. The rate of
temperature rise is greatly affected by the mounting
pad configuration on the PCB, the board material, and
the ambient temperature. When the IC mounting with
good thermal conductivity is used, the junction
temperature will be low even when large power
dissipation applies.
The power dissipation across the device is
P = IOUT (VIN-VOUT)
The maximum power dissipation is:
PMAX
(TJ-max - TA
Rθ JA
)
Where TJ-max is the maximum allowable junction
temperature (135C), and TA is the ambient
temperature suitable in application.
As a general rule, the lower temperature is, the better
reliability of the device is. So the PCB mounting pad
should provide maximum thermal conductivity to
maintain low device temperature.
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet AIC1702.PDF ] | |
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