LK112SM25TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
LK112SM25TR Datasheet PDF : 11 Pages
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LK112S SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol
VI
VSHDN
IO
Tstg
Top
Parameter²
DC Input Voltage
Shutdown Input Voltage
Output Current
Storage Temperature Range
Operating Junction Temperature Range
Value
Unit
16
V
16
V
Internally limited
-55 to +150
°C
-30 to +80
°C
CONNECTION DIAGRAM (top view)
SOT23-5L
PIN DESCRIPTION
Pin N° Symbol
Name and Function
1 SHDN Shutdown Input: Disables the
regulator when is connected to GND
or to positive voltage less than 0.6V
2
GND Ground Pin: Internally connected to
the die attach flag to decrease the
total thermal resistance and increase
the package ability to dissipate
power.
3 Bypass Bypass Pin: Bypass with 0.1µF to
improve the Vref thermal noise
performances.
4
OUT Output Port
5
IN Input Port
ELECTRICAL CHARACTERISTICS FOR LK112 (Tj = 25°C, VIN=VOUT+1V (see Note 1), IOUT=0mA,
VSHDN=1.8V, CI = 1 µF, CO = 2.2µF, CBYPASS = 0.1µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
Id Quiescent Current
VO Output Voltage
∆VO Line Regulation
∆VO Load Regulation
Vd Dropout Voltage
ISC Short Circuit Current
SVR Supply Voltage Rejection
eN Output Noise Voltage
ISHDN Shutdown Input Current
VSHDN Shutdown Input Logic
∆VO/Tj Output Voltage
Temperature Coefficient
ON MODE (except ISHDN)
OFF MODE VI = 8V
VSHDN = 0V
IO = 30mA
VI = VO+1V to VO+6V,
VO ≤ 5.6V
VI = VO+1V to VO+6V,
VO > 5.6V
IO = 1 to 60mA
IO = 1 to 200mA
IO = 60 mA (see Note 2)
IO = 200 mA (see Note 2)
VI = VO+1.5V
CBYP = 0.1µF
CO = 10µF f = 400Hz IO = 30mA
B= 10Hz to 80KHz CBYP = 0.1µF
CO = 10µF VI = VO+1.5V,IO = 60mA
VSHDN = 1.8V
Output ON
Output ON
Output OFF
IO = 10mA
175 250
µA
0
0.1
µA
(see table)
0.7
20
mV
0.8
40
mV
15
30
mV
30
90
mV
0.17 0.24
V
0.35 0.5
V
200
mA
55
dB
30
µVrms
12
35
µA
1.8
V
0.6
V
0.09
mV/°C
Note 1: for version with output voltage less than 2V VIN=2.4V
Note 2: only for version with output voltage more than 2.1V
2/11
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