lk112m23tr STMicroelectronics, lk112m23tr Datasheet

no-image

lk112m23tr

Manufacturer Part Number
lk112m23tr
Description
Low Noise Low Drop Voltage Regulator With Shutdown Function
Manufacturer
STMicroelectronics
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LK112M23TR
Manufacturer:
ST
0
DESCRIPTION
The LK112 is a low dropout linear regulator with a
built in electronic switch. The internal switch can
be controlled by TTL or CMOS logic levels. The
device is ON state when the control pin is pulled to
a logic high level. An external capacitor can be
used connected to the noise bypass pin to lower
the output noise level to 30 V
pass transistor is used to achieve a low dropout
voltage.
SCHEMATIC DIAGRAM
June 2003
OUTPUT CURRENT UP TO 150mA
LOW DROPOUT VOLTAGE (350mV AT
I
VERY LOW QUIESCENT CURRENT: 0.1 A
IN OFF MODE AND MAX 250 A IN ON
MODE AT I
LOW OUTPUT NOISE: TYP 30 V AT
I
WIDE RANGE OF OUTPUT VOLTGAES
INTERNAL CURRENT AND THERMAL LIMIT
OUT
OUT
=150mA)
=60mA AND 10Hz<f<80KHz
OUT
=0mA
LOW NOISE LOW DROP VOLTAGE REGULATOR
rms
. An internal PNP
WITH SHUTDOWN FUNCTION
The LK112 has a very low quiescent current in ON
MODE while in OFF MODE the Iq is reduced
down to 100nA max. The internal thermal
shutdown circuitry limits the juntion temperature to
below 150° C. The load current is internally
monitored and the device will shutdown in the
presence of a short circuit or overcurrent condition
at the output.
SOT23-5L
SERIES
LK112
1/12

Related parts for lk112m23tr

lk112m23tr Summary of contents

Page 1

LOW NOISE LOW DROP VOLTAGE REGULATOR OUTPUT CURRENT UP TO 150mA LOW DROPOUT VOLTAGE (350mV AT I =150mA) OUT VERY LOW QUIESCENT CURRENT: 0 OFF MODE AND MAX 250 MODE AT I =0mA OUT LOW ...

Page 2

LK112 SERIES ABSOLUTE MAXIMUM RATINGS Symbol V DC Input Voltage I V Shutdown Input Voltage SHDN I Output Current O T Storage Temperature Range stg T Operating Junction Temperature Range op THERMAL DATA Symbol Parameter R Thermal Resistance Junction-case thj-case ...

Page 3

ELECTRICAL CHARACTERISTICS FOR LK112 (T V =1.8V 2 SHDN I O Symbol Parameter I Quiescent Current d V Output Voltage O V Line Regulation O V Load Regulation O V Dropout Voltage ...

Page 4

... LK112 SERIES ORDERING NUMBERS AND OUTPUT VOLTAGE Part Number Output Voltage LK112M13TR 1.3V LK112M14TR (*) 1.4V LK112M15TR 1.5V LK112M16TR 1.6V LK112M17TR 1.7V LK112M18TR 1.8V LK112M19TR (*) 1.9V LK112M20TR (*) 2.0V LK112M21TR 2.1V LK112M22TR (*) 2.2V LK112M23TR (*) 2.3V LK112M24TR (*) 2.4V LK112M25TR 2.5V LK112M26TR (*) 2.6V LK112M27TR (*) 2.7V LK112M28TR 2.8V LK112M29TR (*) 2.9V LK112M30TR 3.0V LK112M31TR (*) 3.1V LK112M32TR 3.2V LK112M33TR 3.3V LK112M34TR (*) 3.4V LK112M35TR (*) 3.5V LK112M36TR 3.6V LK112M37TR (*) 3.7V LK112M38TR 3.8V LK112M39TR (*) 3.9V LK112M40TR 4.0V LK112M41TR (*) 4 ...

Page 5

TYPICAL CHARACTERISTICS (unless otherwise specified T Figure 1 : Output Voltage vs Temperature Figure 2 : Output Voltage vs Temperature Figure 3 : Line Regulation vs Temperature LK112 SERIES = 25° =2 ...

Page 6

LK112 SERIES Figure 7 : Output Voltage vs Input Voltage Figure 8 : Shutdown Voltage vs Temperature Figure 9 : Shutdown Current vs Shutdown Voltage 6/12 Figure 10 : Supply Voltage Rejection vs Temperature Figure 11 : Supply Voltage Rejection ...

Page 7

Figure 13 : Supply Voltage Rejection vs Temperature Figure 14 : Quiescent Current vs Temperature Figure 15 : Quiescent Current vs Input Voltage LK112 SERIES Figure 16 : Quiescent Current vs Shutdown Voltage Figure 17 : Quiescent Current vs Output ...

Page 8

LK112 SERIES Figure 19 : Stability Figure 20 : Spectrum Noise Figure 21 : Start-up Transient V =3.5V, V =2.5V 1.8V, R =2. SHDN =10nF O BY ...

Page 9

Figure 25 : Line Transient V =3.5 to 4.5V, V =2.5V, V =1.8V, I =30mA SHDN O C =1nF Figure 26 : Load Transient V =3 =2.5V, ...

Page 10

LK112 SERIES SOT23-5L MECHANICAL DATA DIM. MIN. A 0.90 A1 0.00 A2 0.90 b 0.35 C 0.09 D 2. 2.60 L 0.10 10/12 mm. TYP MAX. MIN. 1.45 35.4 0.10 0.0 1.30 35.4 0.50 13.7 0.20 ...

Page 11

Tape & Reel SOT23-xL MECHANICAL DATA mm. DIM. MIN. TYP A C 12.8 13 3.13 3.23 Bo 3.07 3.17 Ko 1.27 1.37 Po 3.9 4.0 P 3.9 4.0 inch MAX. MIN. TYP. 180 13.2 ...

Page 12

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied ...

Related keywords