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UM1770Y-12 Datasheet(PDF) 6 Page - Union Semiconductor, Inc.

Part # UM1770Y-12
Description  500mA, Micropower, VLDO Linear Regulator
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Manufacturer  UNIONSEMI [Union Semiconductor, Inc.]
Direct Link  http://www.union-ic.com
Logo UNIONSEMI - Union Semiconductor, Inc.

UM1770Y-12 Datasheet(HTML) 6 Page - Union Semiconductor, Inc.

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________________________________________________________________________
http://www.union-ic.com Rev.05 Jan.2015
6/13
UM1770
Electrical Characteristics
Over recommended operating free-air temperature range (unless otherwise noted)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
VIN
Input Voltage Range
2.5
6.0
V
VUVLO
Input Under Voltage
Lockout
VIN falling
1.8
2.4
V
IQ
Operating Quiescent
Current
VIN=4.2V, IOUT=0mA
92
140
μA
VIN=4.2V, IOUT=500mA
250
300
I
SHDN
___________
Shutdown Leakage
Current
1
μA
IOUT
Output Current
500
mA
Output Voltage
Accuracy
1mA≤I
OUT≤500mA, TA=-25℃
-2
+2
%
ΔV
DO
Dropout Voltage
IOUT=500mA,2.5V≤VOUT
220
320
mV
ILIMT
Output Current Limit
VIN≥2.5V
700
mA
t
Startup Time
Response
RL=68Ω, COUT=1μF
40
μs
VIL
SHDN
___________
Input Low
Voltage
2.5V≤VIN≤6.0V
0.4
V
VIH
SHDN
___________
Input High
Voltage
2.5V≤VIN≤6.0V
2.0
V
SHDN
___________
Input Current
SHDN
___________
=VIN or GND
-1
+1
μA
TSHDN
Thermal-Shutdown
Temperature
160
ΔT
SHDN
Thermal-Shutdown
Hysteresis
25
Line Regulation
VOUT+1V≤VIN≤6.0V
(2.5V≤VIN)
IOUT=10mA
0.09
%/V
Load Regulation
VIN=VOUT+1V
(2.5V≤VIN)
1mA≤I
OUT≤500mA
0.2
%
Output Voltage Noise
10Hz to
100kHz,
CIN=1.0μF,
IOUT=100mA
Fixed Output,
VOUT=1.0V
90
μV
RMS
Adjustable
Output,
VOUT=1.0V
60
Adjustable
Output,
VOUT=3.3V
194
Adjustable
Output,
VOUT=5.0V
305
PSRR
Power Supply Ripple
Rejection
VIN=VOUT+1V
IOUT=10mA
f=100Hz
65
dB
f=1kHz
60
f=10kHz
45


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