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L4949D View Datasheet(PDF) - ON Semiconductor

Part NameL4949D ON-Semiconductor
ON Semiconductor ON-Semiconductor
Description100 mA, 5.0 V, Low Dropout Voltage Regulator with Power−On Reset


L4949D Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
L4949, NCV4949
ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
DC Operating Supply Voltage
Transient Supply Voltage (t < 1.0 s)
Output Current
VCC
VCC TR
Iout
28
V
40
V
Internally
Limited
Output Voltage
Sense Input Current
Sense Input Voltage
Output Voltages
Reset Output
Sense Output
Output Currents
Reset Output
Sense Output
Preregulator Output Voltage
Preregulator Output Current
ESD Protection at any pin
Human Body Model
Machine Model
Vout
ISI
VSI
VReset
VSO
IReset
ISO
VZ
IZ
20
V
±1.0
mA
VCC
V
20
20
mA
5.0
5.0
7.0
V
5.0
mA
V
2000
400
Thermal Resistance, Junction−to−Air
P Suffix, DIP−8 Plastic Package, Case 626
D Suffix, SOIC−8 Plastic Package, Case 751
D Suffix, SOIC−20 Plastic Package, Case 751D
RqJA
°C/W
100
200
80
Operating Junction Temperature Range
TJ
−40 to +150
°C
Storage Temperature Range
Tstg
−65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
ELECTRICAL CHARACTERISTICS (VCC = 14 V, −40°C < TA < 125°C, unless otherwise specified.)
Characteristic
Symbol
Min
Typ
Output Voltage (TA = 25°C, Iout = 1.0 mA)
Output Voltage (6.0 V < VCC < 28 V, 1.0 mA < Iout < 50 mA)
Output Voltage (VCC = 35 V, t < 1.0 s, 1.0 mA < Iout < 50 mA)
Dropout Voltage
Iout = 10 mA
Iout = 50 mA
Iout = 100 mA
Input to Output Voltage Difference in Undervoltage Condition
(VCC = 4.0 V, Iout = 35 mA)
Line Regulation (6.0 V < VCC < 28 V, Iout = 1.0 mA)
Load Regulation (1.0 mA < Iout < 100 mA)
Current Limit
Vout = 4.5 V
Vout = 0 V
Quiescent Current (Iout = 0.3 mA, TA < 100°C)
Quiescent Current (Iout = 100 mA)
Vout
Vout
Vout
Vdrop
VIO
4.95
5.0
4.9
5.0
4.9
5.0
0.1
0.2
0.3
0.2
Regline
1.0
Regload
8.0
ILim
105
200
100
IQSE
150
IQ
Max Unit
5.05
V
5.1
V
5.1
V
V
0.25
0.40
0.50
0.4
V
20
mV
30
mV
mA
400
260
mA
5.0
mA
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The L4949 is a monolithic integrated 5.0 V voltage regulator with a very low dropout and additional functions such as power−on reset and input voltage sense.
It is designed for supplying the micro−computer controlled systems especially in automotive applications.

Features
• Operating DC Supply Voltage Range 5.0 V to 28 V
• Transient Supply Voltage Up to 40 V
• Extremely Low Quiescent Current in Standby Mode
• High Precision Standby Output Voltage 5.0 V ±1%
• Output Current Capability Up to 100 mA
• Very Low Dropout Voltage Less Than 0.4 V
• Reset Circuit Sensing The Output Voltage
• Programmable Reset Pulse Delay With External Capacitor
• Voltage Sense Comparator
• Thermal Shutdown and Short Circuit Protections
• NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
• Pb−Free Packages are Available

 

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