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LM350 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. LM350
Description  3.0 A, Adjustable Output, Positive Voltage Regulator
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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LM350 Datasheet(HTML) 2 Page - ON Semiconductor

 
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LM350
http://onsemi.com
2
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input−Output Voltage Differential
VI−VO
35
Vdc
Power Dissipation
PD
Internally Limited
W
Operating Junction Temperature Range
TJ
−40 to +125
°C
Storage Temperature Range
Tstg
−65 to +150
°C
Soldering Lead Temperature (10 seconds)
Tsolder
300
°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 (VI−VO = 5.0 V; IL = 1.5 A; TJ = Tlow to Thigh; Pmax [Note 1], unless otherwise noted.)
Characteristics
Figure
Symbol
Min
Typ
Max
Unit
Line Regulation (Note 2) TA = 25°C, 3.0 V ≤ VI−VO ≤ 35 V
1
Regline
0.0005
0.03
%/V
Load Regulation (Note 2)
TA = 25°C, 10 mA ≤ Il ≤ 3.0 A
VO ≤ 5.0 V
VO ≥ 5.0 V
2
Regload
5.0
0.1
25
0.5
mV
% VO
Thermal Regulation, Pulse = 20 ms, (TA = +25°C)
Regtherm
0.002
% VO/W
Adjustment Pin Current
3
IAdj
50
100
mA
Adjustment Pin Current Change
3.0 V
≤ VI−VO ≤ 35 V
10 mA
≤ IL ≤ 3.0 A, PD ≤ Pmax
1,2
DIAdj
0.2
5.0
mA
Reference Voltage
3.0 V
≤ VI−VO ≤ 35 V
10 mA
≤ IO ≤ 3.0 A, PD ≤ Pmax
3
Vref
1.20
1.25
1.30
V
Line Regulation (Note 2) 3.0 V
≤ VI−VO ≤ 35 V
1
Regline
0.02
0.07
%/V
Load Regulation (Note 2)
10 mA
≤ IL ≤ 3.0 A
VO ≤ 5.0 V
VO ≥ 5.0 V
2
Regload
20
0.3
70
1.5
mV
% VO
Temperature Stability (Tlow ≤ TJ ≤ Thigh)
3
TS
1.0
% VO
Minimum Load Current to
Maintain Regulation (VI−VO = 35 V)
3
ILmin
3.5
10
mA
Maximum Output Current
VI−VO ≤ 10 V, PD ≤ Pmax
VI−VO = 30 V, PD ≤ Pmax, TA = 25°C
3
Imax
3.0
0.25
4.5
1.0
A
RMS Noise, % of VO
TA= 25°C, 10 Hz ≤ f ≤ 10 kHz
N
0.003
% VO
Ripple Rejection, VO = 10 V, f = 120 Hz (Note 3)
Without CAdj
CAdj = 10 mF
4
RR
66
65
80
dB
Long Term Stability, TJ = Thigh (Note 4)
TA= 25°C for Endpoint Measurements
3
S
0.3
1.0
%/1.0 k
Hrs.
Thermal Resistance, Junction−to−Case
Peak (Note 5)
Average (Note 6)
RqJC
2.3
1.5
°C/W
1. Tlow to Thigh = 0° to +125°C; Pmax = 25 W for LM350T; Tlow to Thigh = −40° to +125°C; Pmax = 25 W for LM350BT
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
3. CAdj, when used, is connected between the adjustment pin and ground.
4. Since Long−Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average
stability from lot to lot.
5. Thermal Resistance evaluated measuring the hottest temperature on the die using an infrared scanner. This method of evaluation yields very
accurate thermal resistance values which are conservative when compared to the other measurement techniques.
6. The average die temperature is used to derive the value of thermal resistance junction to case (average).


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