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LK112M21TR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
Pin configuration LK112
4/18 DocID7362 Rev 17
2 Pin configuration
Figure 2. Pin connection (top view)
Table 2.
Pin description
Pin n° Symbol Note
1SHDN
Shutdown input disables the regulator when it is connected to GND or to positive
voltage less than 0.6 V
2GND
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 with 0.1 µF to improve the noise performance
4 OUT Output port
5 IN Input port
DocID7362 Rev 17 5/18
LK112 Maximum ratings
18
3 Maximum ratings
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
I
DC input voltage 16 V
V
SHDN
DC input voltage 16 V
I
O
Output current Internally limited
T
STG
Storage temperature range -55 to 150 °C
T
OP
Operating junction temperature range -40 to 125 °C
Table 4. Thermal data
Symbol Parameter SOT23-5L Unit
R
thJC
Thermal resistance junction-case 81 °C/W
R
thJA
Thermal resistance junction-ambient 255 °C/W
Electrical characteristics LK112
6/18 DocID7362 Rev 17
4 Electrical characteristics
T
J
= 25 °C, V
IN
= V
OUT
+ 1 V, I
OUT
= 0 mA, V
SHDN
= 1.8 V, C
I
= 1 µF, C
O
= 2.2 µF,
C
BYPASS
= 0.1 µF unless otherwise specified.
Note: For version with output voltage less than 2 V, V
IN
= 2.4 V.
Table 5. LK112 electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
I
q
Quiescent current
On mode (except I
SHDN
) 175 250 µA
Off mode, V
I
= 8V, V
SHDN
= 0V 0 0.1 µA
V
O
Output voltage I
O
= 30mA -2 +2 %
ΔV
O
Line regulation
V
I
= V
O
+1V to V
O
+6V, V
O
≤ 5.6V 0.7 20 mV
V
I
= V
O
+1V to V
O
+6V, V
O
> 5.6V 0.8 40 mV
ΔV
O
Load regulation
I
O
= 1 to 60mA 15 30 mV
I
O
= 1 to 150mA 25 90 mV
V
d
Dropout voltage
I
O
= 60mA
(1)
0.17 0.24 V
I
O
= 150mA
(1)
0.29 0.35 V
I
O
Output current limit 150 mA
SVR Supply voltage rejection
V
I
= V
O
+1.5V, C
BYP
= 0.1µF
C
O
= 10µF, f = 400Hz, I
O
= 30mA
55 dB
eN Output noise voltage
B= 10Hz to 80kHz, C
BYP
= 0.1µF
C
O
= 10µF, V
I
= V
O
+1.5V, I
O
= 60mA
30 µVrms
I
SHDN
Shutdown input current V
SHDN
= 1.8V, output on 12 35 µA
V
SHDN
Shutdown input logic
Output on 1.8
V
Output off 0.6
ΔV
O
/T
J
Output voltage
temperature coefficient
I
O
= 10mA 0.09 mV/°C
1. For versions with output voltage more than 2.1 V only.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

LK112M21TR

Mfr. #:
Buy LK112M21TR
Manufacturer:
STMicroelectronics
Description:
IC REG LINEAR 2.1V 150MA SOT23-5
Lifecycle:
New from this manufacturer.
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