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PDF LR1811 Data sheet ( Hoja de datos )
| Número de pieza | LR1811 | |
| Descripción | 1A FAST ULTRA LOW DROPOUT LINEAR REGULATOR | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
LR1811
Advance
1A FAST ULTRA LOW
DROPOUT LINEAR
REGULATOR
CMOS IC
DESCRIPTION
The UTC LR1811 operate from a +1.5V~+6V input supply as fast
ultra low-dropout linear regulators. Wide output voltage range
options are available. The fast response characteristic to make UTC
LR1811 suitable for low voltage microprocessor application. The low
quiescent current operation and low dropout quality caused by the
CMOS process.
The UTC LR1811 has low dropout voltage. The ground pin
current is typically 80μA.
Output Voltage Precision: Multiple output voltage options are
available and ranging from 1.2V~5.0V at room temperature with a
guaranteed accuracy of ±1.5%, and ±3.0% when varying line and
load.
The output voltage types of UTC LR1811 are fixed one in the IC.
FEATURES
* Low Dropout Voltage
* The Guaranteed Output Current is 1A DC
* Output Voltage Accuracy ± 1.5%
* Over temperature Protection And Over current Protection
ORDERING INFORMATION
Ordering Number
LR1811G-xx-SH2-R
Note: xx: Output Voltage, refer to Marking Information
Package
HSOP-8
Packing
Tape Reel
LR1811G-xx-SH2-R
(1)Packing Type
(2)Package Type
(3)Output Voltage
(4)Green Package
(1) R: Tape Reel
(2) SH2: HSOP-8
(3) xx: Refer to Marking Information
(4) G: Halogen Free and Lead Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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LR1811
Advance
CMOS IC
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Ripple Rejection
|RR|
VIN=VOUT(S)+1V,
f=1khz,
△Vrip=0.5Vrms,
IOUT=100mA
1.2V≤VOUT(S)<3.0V
3.0V≤VOUT(S)≤3.5V
3.5V≤VOUT(S)≤5.0V
65
60
55
dB
Thermal Shutdown detection
temperature
TSD Junction temperature
150 °C
Thermal Shutdown release
temperature
TSR Junction temperature
120 °C
Notes: 1. The UTC LR1811 output must be diode-clamped to ground. If used in a dual-supply system where the
regulator load is returned to a negative supply.
2. Devices must be derated based on package thermal resistance at elevated temperatures.
3. VOUT(S): Specified output voltage
VOUT(E): Actual output voltage
Output voltage when fixing IOUT(=100mA) and inputting VOUT(S)+1.0V
4. Vdrop=VIN1-(VOUT3×0.98)
VOUT3 is the output voltage when VIN=VOUT(S)+1.0V and IOUT=300mA, 1000mA.
5. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the
output current.
6. The change in temperature [mV/°C] is calculated using the following equation.
VOUT
TA
mV
/
C
VOUT (S )
V
VOUT
TA VOUT
ppm / C 1000
7. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be
paid to the power dissipation of the package when the output current is large.
This specification is guaranteed by design.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LR1811.PDF ] | |
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