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L2949E Datasheet Preview

L2949E Datasheet

MULTIFUNCTION VERY LOW DROP VOLTAGE REGULATOR

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UTCL2949E LINEAR INTEGRATED CIRCUIT
MULTIFUNCTION VERY LOW
DROP VOLTAGE REGULATOR
DESCRIPTION
The UTC L2949E is a monolithic integrated 5V voltage
regulator with a very low dropout output and additonal
functions as power-on reset and input voltage sense.It is
designed for supplying the microcomputer controlled
systems especially in automotive applications.
FEATURES
*Operating dc supply voltage range 5V to 28V.
*Transient supply voltage up to 40V.
*Extremely low quiescent current in standby mode.
*High precision standby output voltage 5V±1%
*Output current capability up to 100mA.
*Very low dropout voltage less than 0.5V.
*Reset circuit sensing the output voltage
*Programmable reset pulse delay with external capacitor
*Voltage sense comparator.
*Thermal shutdown and short circuit protections.
PIN CONNECTIONS
DIP-8
SOP-8
SOP-20
VS 1
SI 2
Vz 3
CT 4
8 VOUT
7 SO
6 RES
5 GND
DIP-8/SOP-8
Vz
CT
N.C.
GND
GND
GND
GND
N.C.
N.C.
RES
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
SOP-20
SI
VS
N.C.
GND
GND
GND
GND
N.C.
VOUT
SO
UTC UNISONIC TECHNOLOGIES CO. LTD
1
QW-R102-014,A




UTC

L2949E Datasheet Preview

L2949E Datasheet

MULTIFUNCTION VERY LOW DROP VOLTAGE REGULATOR

No Preview Available !

UTC L2949E
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
Vz VOUT
CT
VS PREREGULATOR 5V
2μ
+
REG
SI
RESET
VS
2V
REF
1.23V
SENSE
1.23V
RES
SO
GND
ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Operating Supply Voltage
Transient Supply Voltage(T<1s)
Output Current
Output Voltage
Output Voltage
Reset Output
Sense Output
Output Current
Reset Output
Sense Output
Preregulator Output Voltage
Preregulator Output Current
Junction Temperature
Storage Temperature Range
SYMBOL
VCC
VCC TR
Io
Vo
VRES
Vso
IRES
Iso
Vz
Iz
Tj
Tstg
RATING
28
40
Internally Limited
20
20
20
5
5
7
5
-40+150
-55+150
UNIT
V
V
V
V
mA
V
mA
UTC UNISONIC TECHNOLOGIES CO. LTD
2
QW-R102-014,A


Part Number L2949E
Description MULTIFUNCTION VERY LOW DROP VOLTAGE REGULATOR
Maker UTC
Total Page 7 Pages
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