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PDF AIC1750 Data sheet ( Hoja de datos )
| Número de pieza | AIC1750 | |
| Descripción | Low-Dropout 150mA Linear Regulator | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC1750
Dual Output Low ESR Cap. Low-Dropout
150mA Linear Regulator
FEATURES
Up to 150mA Output Current (each LDO).
Low Quiescent Current：50µA at single output.
Low Dropout：145mV at 100mA load current
and 3.3V output voltage.
High PSRR：60dB at 1kHz.
Independent Shutdown Controls.
Current Limit and Thermal Protection.
Tiny SOT-23-6, TSOT-23-6 and DFN6L 2x2
Package.
APPLICATIONS
Cellular Phones.
PDAs.
Digital Still Cameras.
Portable Consumer Equipments.
DESCRIPTION
The AIC1750 is a dual output linear regulator
in a tiny SOT-23-6, TSOT-23-6 and DFN6L
2X2 package. It is optimized for low ESR
ceramic capacitors operation and up to 150mA
continuous current on each output.
The AIC1750 offers high precision output
voltage of ±2%. At 100mA load current, a
145mV dropout is performed when output
voltage is equal to 3.3V. The quality of low
quiescent current and low dropout voltage
makes this device ideal for battery power
applications. The high ripple rejection and low
noise of the AIC1750 provide enhanced
performances for critical applications such as
cellular phones, and PDAs.
The AIC1750 includes current limit and thermal
shutdown protection. Each of the output is
controlled independently.
TYPICAL APPLICATION CIRCUIT
VIN
1 EN1 VOUT1 6
2 VIN
GND 5
CIN
1µF
3 EN2
VOUT2 4
AIC1750
VOUT1
COUT1
1µF
VOUT2
COUT2
1µF
Analog Integrations Corporation
Si-Soft Research Center
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
DS-1750P-01 011608
1
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1 page  
AIC1750
ELECTRICAL CHARACTERISTICS
(VIN = VOUT + 1V, VEN1=VEN2= VIN, TJ=25°C, unless otherwise specified) (Note 1)
PARAMETER TEST
CONDITIONS
SYMBOL MIN. TYP.
Input Voltage (Note 2)
Output Voltage Tolerance
Continuous Output Current
IOUT = 30mA
Quiescent Current
GND Pin Current
Standby Current
Output Current Limit
Dropout Voltage (1)
Dropout Voltage (2)
Dropout Voltage (3)
Line Regulation
Load Regulation
Ripple Rejection
IOUT1 = 0mA & VEN2 = 0V or
IOUT2 = 0mA & VEN1 = 0V
IOUT1 = 150mA & VEN2 = 0V or
IOUT2 = 150mA & VEN1 = 0V
VEN1=VEN2= 0
VOUT = GND
IOUT = 30 mA
IOUT = 100 mA VOUT=1.2V
IOUT = 150 mA
IOUT = 30 mA
IOUT = 100 mA VOUT=1.8V
IOUT = 150 mA
IOUT = 30 mA
IOUT = 100 mA VOUT=3.3V
IOUT = 150 mA
VIN = VOUT + 1V to 5.5V
IOUT = 1mA to 150mA
f=1kHz, Ripple=0.5Vp-p,
VIN
VOUT
IOUT
IQ
IGND
ISTBY
IIL
VDROP1
VDROP2
VDROP3
∆VLIR
∆VLOR
PSRR
2.0
-2
150
50
55
180 350
550
640
800
85
280
410
45
145
240
15
60
Temperature Coefficient
TC 50
Thermal Shutdown
Temperature
VIN = VOUT + 1V
150
Thermal Shutdown
Hysteresis
20
EN Pin SPECIFICATIONS
EN Pin Current
EN Input Threshold
VEN1 = VEN2 = VIN
Output ON
Output OFF
IEN
VENH 1.6
VENL
0.1
MAX.
5.5
2
mA
UNIT
V
%
75 µA
75 µA
0.1
500
750
800
1000
150
400
600
60
200
300
10
60
dB
µA
mA
mV
mV
mV
mV
mV
ppm/℃
℃
℃
1 µA
V
0.25
Note 1: Spe cifications a re prod uction tested at T A=25°C. Spe cifications over the -40 °C to 85 °C ope rating
temperature ran ge are assu red by de sign, charact erization an d co rrelation with Statistical Quality
Controls (SQC).
Note 2: Choose the maximum value of (VOUT+VDROP) or 2.0V as VIN(min).
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AIC1750
APPLICATION INFORMATION
The AIC1750 is a low-dropout, low quiescent-current,
dual-output linear regulator for battery power
applications. These parts are available with preset
output voltages ranging from 1.1V to 3.3V, and the
parts can supply loads up to 150mA.
SHUTDOWN
The AIC1750 has two independent shutdown control
inputs (EN1 and EN2). By connecting EN1 pin to
ground, output1 can be shut down. By connecting
EN2 pin to ground, output2 can be shut down. By
connecting both of EN1 pin and EN2 pin to ground,
the AIC1750 can be shut down to reduce the supply
current to 0.1µA.
CURRENT LIMIT
The AIC1750 includes two independent current
limiters, which monitor and control the maximum
output current. If the output is overloaded or shorted
to ground, this can protect the device from being
damaged.
THERMAL PROTECTION
The AIC1750 includes two independent thermal-
limiting circuits, which are designed to protect the
device against overload condition. When the junction
temperature exceeds TJ=150ºC, 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.
INPUT-OUTPUT CAPACITORS
Linear regulators require input and output capacitors
to maintain stability. Input capacitor at 1µF with a 1µF
ceramic output capacitor for each regulator is
recommended. To avoid oscillation, it is
recommended to follow the figure of “Region of
Stable COUT ESR vs. Load Current” to choose proper
capacitor specifications.
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.
POWER DISSIPATION
The maximum power dissipation of AIC1750
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 = IOUT1 (VIN-VOUT1)+ IOUT2 (VIN-VOUT2)
The maximum power dissipation is:
PMAX
=
(TJ-max - TA )
Rθ JA
Where TJ-max is the maximum allowable junction
temperature (125°C), 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.
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11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet AIC1750.PDF ] | |
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