|
Details, datasheet, quote on part number:UTCL2949E
| |
| Part: | UTCL2949E |
| Category: | Power Management => Regulators => Linear Voltage Regulators => LDO (Low Drop Out) => Low Dropout Regulators |
| Description: | Description = 100mA/0.5V Multifunction Very Low Drop Voltage Regulator ;; Package = DIP-8, SOP-8, SOP-20 ;; |
| Company: | Unisonic Technologies |
| Datasheet: | Download UTCL2949E datasheet File size : 131 kB |
| Request For quote: | Find where to buy UTCL2949E
|
| |
Datasheet text preview:
UTC L2949E
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.
DIP-8
SOP-8
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 5Vą1% *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.
SOP-20
PIN CONNECTIONS
Vz CT N.C. VS SI Vz CT 1 2 3 4 8 7 6 5 VOUT SO R ES GND GND GND GND GND N.C. DIP-8/SOP-8 N.C. RES
1 2 3 4 5 6 7 8 9 10 SOP-20
20 19 18 17 16 15 14 13 12 11
SI VS N.C. GND GND GND GND N.C. VOUT SO
UTC
UNISONIC TECHNOLOGIES
CO. LTD
1
QW-R102-014,A
UTC L2949E
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
Vz VOUT CT
VS
PREREGULATOR 5V
2 +
RES
2V REG SI REF 1.23V SENSE 1.23V GND RESET VS SO
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
THERMAL DATA
DESCRIPTION
Thermal Resistance Junction-ambient DIP-8 SOP-8 SOP-20
SYMBOL
Rth j-amb
RATING
100 200 50
UNIT
/W
UTC
UNISONIC TECHNOLOGIES
CO. LTD
2
QW-R102-014,A
UTC L2949E
Thermal Resistance Junction-pin
LINEAR INTEGRATED CIRCUIT
(SOP-20) Rth j-pins 15 /W
DESCRIPTION
Thermal Shutdown Junction temperature
SYMBOL
TJSD
RATING
165 unless otherwise specified)
UNIT
ELECTRICAL CHARACTERISTICS(Vs=14V;-40PARAMETER
Output Voltage Output Voltage Output Voltage Dropout voltage
SYMBOL
Vo Vo Vo VD
CONDITIONS
Tj=25;Io=1mA 6VMIN
4.95 4.90 4.75
TYP.
5 5
MAX
5.05 5.10 5.25 0.25 0.4 0.5 0.4
UNIT
V V V V V V V
0.1 0.2 0.3
Input to Output Voltage Difference in Undervoltage Condition Max Output Leakage Line Regulation Load Regulation Current Limit
VIO
Iouth ** VOL VOLO ILIM
VIN=25V,Vo=5.5V 6V20
50
80 20 30 400 400 300 5
A mV mV mA mA A mV
105 120
200
100 Quiescent Current IQSE 200 Quiescent Current IQ Io=100mA ** With this test we guarantee that with no output current the output voltage will not exceed 5.5V
RESET
PARAMETER
Reset Thereshold Voltage Reset Thereshold Hysteresis Reset Pulse Delay Reset Output Low Voltage Reset Output Gigh Leakage Current Delay Comparator Thereshold Delay Comparator Thereshold Hysteresis
SYMBOL
VRT VRTH tRD VRL IRH VCTth VCTth,hy
CONDITIONS
MIN
50 55
TYP.
Vo-0.5V 100 100
MAX
200 180 0.4 1
UNIT
V mV ms V A V mV
CT=100nF;TR100s RRES=10K to Vs1.5V VRES=5V
2 100
SENSE
PARAMETER
Sense Low Thereshold Sense Thereshold Hysteresis Sense Output Low Voltage Sense Output Leakage Sense Input Current
SYMBOL
Vst Vsth VSL ISH ISI
CONDITIONS
MIN
1.16 20
TYP.
1.23 100
MAX
1.35 200 0.4 1 -3
UNIT
V mV V A A
VSI1.16V;Vs3V Rso=10K to Vo Vso=5V;VSI1.5V VSI=0 -20 -8
UTC
UNISONIC TECHNOLOGIES
CO. LTD
3
QW-R102-014,A
|
|
