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L4949 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. L4949
Description  100 mA, 5.0 V, Low Dropout Voltage Regulator with Power−On Reset
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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L4949 Datasheet(HTML) 3 Page - ON Semiconductor

 
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L4949, NCV4949
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (continued) (VCC = 14 V, −40°C < TA < 125°C, unless otherwise specified.)
Characteristic
Unit
Max
Typ
Min
Symbol
RESET
Reset Threshold Voltage
VResth
Vout − 0.5
V
Reset Threshold Hysteresis
VResth,hys
mV
@ TA = 25°C
50
100
200
@ TA = −40 to +125°C
50
300
Reset Pulse Delay (CT = 100 nF, tR ≥ 100 ms)
tResD
55
100
180
ms
Reset Reaction Time (CT = 100 nF)
tResR
5.0
30
ms
Reset Output Low Voltage (RReset = 10 kW to Vout, VCC ≥ 3.0 V)
VResL
0.4
V
Reset Output High Leakage Current (VReset = 5.0 V)
IResH
1.0
mA
Delay Comparator Threshold
VCTth
2.0
V
Delay Comparator Threshold Hysteresis
VCTth, hys
100
mV
SENSE
Sense Low Threshold (VSI Decreasing = 1.5 V to 1.0 V)
VSOth
1.16
1.23
1.35
V
Sense Threshold Hysteresis
VSOth,hys
20
100
200
mV
Sense Output Low Voltage (VSI ≤ 1.16 V, VCC ≥ 3.0 V, RSO = 10 kW to Vout)
VSOL
0.4
V
Sense Output Leakage (VSO = 5.0 V, VSI ≥ 1.5 V)
ISOH
1.0
mA
Sense Input Current
ISI
−1.0
0.1
1.0
mA
PREREGULATOR
Preregulator Output Voltage (IZ = 10 mA)
VZ
6.3
V
PIN FUNCTION DESCRIPTION
Pin
SOIC−8, PDIP−8
Pin
SOIC−20W
Symbol
Description
1
19
VCC
Supply Voltage
2
20
Si
Input of Sense Comparator
3
1
VZ
Output of Preregulator
4
2
CT
Reset Delay Capacitor
5
4 − 7, 14 − 17
GND
Ground
6
10
Reset
Output of Reset Comparator
7
11
SO
Output of Sense Comparator
8
12
Vout
Main Regulator Output
3, 8, 9, 13, 18
NC
No Connect


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