LR1801L-25-SH2-T [UTC]
1A FAST ULTRA LOW DROPOUT LINEAR REGULATOR;
| 型号： | LR1801L-25-SH2-T |
| 厂家： | 
Unisonic Technologies |
| 描述： | 1A FAST ULTRA LOW DROPOUT LINEAR REGULATOR |
| 文件： | 总5页 (文件大小：206K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LR1801
Preliminary
CMOS IC
1A FAST ULTRA LOW
DROPOUT LINEAR
REGULATOR
DESCRIPTION
The UTC LR1801 operate from a +2V ~ +6V input supply as
fast ultra low-dropout linear regulators. Wide output voltage range
options are available. The fast response characteristic to make
UTC LR1801 suitable for low voltage microprocessor application.
The low quiescent current operation and low dropout quality
caused by the CMOS process.
The UTC LR1801 has ultra low dropout voltage
300mV at 1A load current typically. The ground pin current is
typically 60uA at 1mA load current.
Output Voltage Precision: Multiple output voltage options are
available and ranging from 1.2V ~ 3.5V at room temperature with a
guaranteed accuracy of ±1.5%, and ±3.0% when varying line, load
and temperature.
FEATURES
* Ultra Low Dropout Voltage
* Low Ground Pin Current
* The Guaranteed Output Current is 1A DC
* Output Voltage Accuracy ± 1.5%
* Over temperature Protection And Over current Protection
ORDERING INFORMATION
Ordering Number
Lead Free
Package
Packing
Halogen Free
LR1801L-xx-SH2-T
LR1801G-xx-SH2-T
HSOP-8
HSOP-8
Tube
LR1801L-xx-SH2-R
LR1801G-xx-SH2-R
Tape Reel
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LR1801
Preliminary
CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
12: 1.2V
15 : 1.5V
18: 1.8V
25: 2.5V
33: 3.3V
HSOP-8
PIN CONFIGURATION
VOUT
1
8
7
VIN
NC
ON/ OFF
NC
2
3
4
GND
6
5
NC
NC
GND
PIN DESCRIPTION
PIN NO.
PIN NAME
VOUT
PIN DESCRIPTION
1
Output voltage
2
ON /OFF
NC
ON/OFF select pin, when connected to the ground the chip in operating normally.
3, 5,6,7
No connection
GND
4
8
GND
VIN
Input voltage
Note: The NC pin is electrically open.
The NC pin can be connected to VIN or GND.
BLOCK DIAGRAM
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LR1801
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VIN
RATINGS
UNIT
Input Voltage
7
-0.3~VIN
1
V
V
A
Shutdown Input Voltage
Maximum Operating Current (DC)
Power Dissipation (Note 3)
Junction Temperature
VIN(SHDN)
PD
TJ
Internally Limited
+125
°C
°C
Storage Temperature
TSTG
-65 ~ +150
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
SYMBOL
θJA
RATINGS
143
UNIT
°C/W
°C/W
Junction to Ambient
Junction to Case
θJC
45
ELECTRICAL CHARACTERISTICS (TJ = 25°C, unless otherwise specified.)
PARAMETER
SYMBOL
VIN
TEST CONDITIONS
MIN
2
TYP
MAX UNIT
Input Voltage
6
V
VOUT(S)
+
0.015
VOUT(S)
x 1.01
VOUT(S)
0.015
-
1.0V≤VOUT(S)<1.5V
VOUT(S)
V
VIN=VOUT(S)+1V
OUT=100mA
Output Voltage (Note 4)
VOUT(E)
I
VOUT(S)
x 0.99
1.5V≤VOUT(S) ≤3.5V
VOUT(S)
0.05
-3
V
Output Voltage Line
Regulation
△VOUT1
(△VIN×VOUT
/
V
OUT(S)+0.5V≤VIN≤5.5V,IOUT=100mA
0.2
20
%/V
mV
)
Output Voltage Load
Regulation
△VOUT2 VIN=VOUT(S)+1V,1mA≤IOUT≤300mA
1.2V≤VOUT(S)<1.5V
-20
0.34
0.10
0.07
0.70
0.40
0.32
0.23
0.38
0.15
0.10
IOUT=300mA
1.5V≤VOUT(S)<2.6V
2.6V≤VOUT(S) ≤3.5V
1.2V≤VOUT(S)<1.5V
1.5V≤VOUT(S)<2.0V
2.0V≤VOUT(S)<2.6V
2.6V≤VOUT(S) ≤3.5V
Dropout Voltage(Note 5)
Vdrop
V
IOUT=1000mA
1000
Output Current(Note 6)
IOUT
ISS1
ISS2
VIN≥VOUT(S)+1V
mA
uA
(Note 8)
Ground Pin Current In Normal
Operation Mode
VIN=VOUT(S)+1V, ON/OFF pin=ON, No
Load
60
0.1
90
Ground Pin Current In
Power-off Mode
VIN=VOUT(S)+1V, ON/OFF pin=OFF,
No Load
1.0
uA
VIN=VOUT(S)+1V, ON/OFF pin=ON,
Short Circuit Current
ISC
200
±100
mA
VOUT=0V
Output Voltage Temperature
Coefficient(Note 7)
△VOUT/
VIN=VOUT(S)+1V,IOUT=100mA,
(△TA×VOUT) -40°C ≤ TA≤+85°C
ppm/°C
V
ON/OFF Pin Input Voltage “H”
ON/OFF Pin Input Voltage “L”
VSH
VSL
1.0
VIN=VOUT(S)+1V, RL=1.0KΩ
Determinied by VOUT output level
0.3
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LR1801
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
SYMBOL TEST CONDITIONS
MIN
-0.1
-0.1
TYP
MAX UNIT
ON/OFF Pin Input Current “H”
ON/OFF Pin Input Current “L”
ISH
ISL
VIN=VOUT(S)+1V,VON/OFF=5.5V
VIN=VOUT(S)+1V,VON/OFF=0V
VIN=VOUT(S)+1V, 1.2V≤VOUT(S)<3.0V
f=1khz,
0.1
0.1
uA
uA
65
60
Ripple Rejection
|RR|
dB
△Vrip=0.5Vrms,
3.0V≤VOUT(S) ≤3.5V
IOUT=100mA
Thermal Shutdown detection
temperature
TSD
TSR
Junction temperature
Junction temperature
150
120
°C
°C
Thermal Shutdown release
temperature
Notes: 1. The LR1801 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. Between the VIN and VOUT terminals the output PMOS structure contains a diode. This diode is reverse
biased normally. If the voltage at the output terminal is forced to be higher than the voltage at the input
terminal this diode will get forward biased. This diode can withstand 1Amp of peak current and 200mA of
DC current typically.
3. Devices must be derated based on package thermal resistance at elevated temperatures.
4. VOUT(S): Specified output voltage
V
OUT(E): Actual output voltage
Output voltage when fixing IOUT(=100ma) and inputting VOUT(S)+1.0V
5. Vdrop=VIN1-(VOUT3×0.98)
VOUT3 is the output voltage when VIN=VOUT(S)+1.0V and IOUT=300mA, 1000mA.
6. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the
output current.
7.The change in temperature [mV/°C] is calculated using the following equation.
VOUT
TA
VOUT
TA VOUT
mV /C V
V
OUT (S)
ppm / C 1000
8.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.
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LR1801
Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
(1) ON/OFF pins must be pulled high through a 10kΩ pull-up resistor.
(2) Generally a series regulator may cause oscillation, depending on the selection of external parts. The following
conditions are recommended for this IC. However, be sure to perform sufficient evaluation under the actual
usage conditions for selection, including evaluation of temperature characteristics.
Input capacitor (CIN): 2.2μF or more
Output capacitor (CL): 2.2μF or more
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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