LM317MDT Datasheet, PDF (1/1 Pages) Micro Commercial Components – Adjustable Voltage Regulators

TIGER ELECTRONIC CO.,LTD
3-Terminal Positive Adjustable Regulator
Product specification
LM317MDT
Features
◆ _{Output Current In Excess of 1. 0A}
◆ _{Output Adjustable Between 1. 2V and 37V}
◆ _{Internal Thermal Overload Protection}
◆ _{Internal Short Circuit Current Limiting}
◆ _{Output Transistor Safe Operating Area Compensation}
◆ _{TO-252 Package}
Description
This monolithic integrated circuit is an adjustable
3-terminal positive voltage regulator designed to
supply more than 1.0A of load current with
anoutput voltage adjustable over a 1.2 to 37V.
It employs internal current limiting, thermal
shut-down and safe area compensation.
Absolute Maximum Ratings ( Ta = 25 ^OC)
Parameter
Symbol Typ Unit
Input-Output Voltage Differential
V_I -V_O
40
V
Lead Temperature
TLEAD
230
o_C
Power Dissipation
P_D
Operating Junction Temperature R
ange
T_j
Internally
limited
W
0~125 ^oC
Storage Temperature Range
T_STG
-65~150 ^oC
Temperature Coefficient of Output
Voltage
ΔVo/ΔT
±0.02
%/^oC
1
2
3
1. Adjust
2. Vout
3. Vin
TO-252
Electrical Characteristics ( Ta = 25 ^OC)
(V_I - V_O= 5 V, I_O= 0.5 A, 0^oC ≤T_J ≤+ 125^oC, I_MAX = 1.5A,P_DMAX = 15W, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Line Regulation (Note1)
Load Regulation (Note1)
Adjustable Pin Current
Adjustable Pin Current Change
Reference Voltage
Rline
Rload
I_ADJ
ΔI_ADJ
V_REF
TA = +25^oC
3V ≤V_I - V_O ≤40V
3V ≤V_I - V_O ≤40V
TA = +25^oC, 10mA ≤I_O ≤I_MAX
V_O < 5V
V_O ≥5V
10mA ≤I_O ≤I_MAX
V_O < 5V
V_O ≥5V
-
3V ≤V_I - V_O ≤40V
10mA ≤I_O ≤I_MAX P_D ≤P_MAX
3V ≤V_IN - V_O ≤40V
10mA ≤I_O ≤I_MAX
P_D ≤P_MAX
-
0.01 0.04
%/V
-
0.02 0.07
-
18
25
0.4
0.5 _{mV % / VO}
-
40
70
0.8
1.5
-
46
100
μA
-
2.0
5
μA
1.20 1.25 1.30
V
Maximum Output Current
I_O(MAX)
V_I - V_O ≤15V, P_D ≤P_MAX
V_I - V_O ≤40V, P_D ≤P_MAX
1.0
2.0
0.3
-
A
Ripple Rejection
V_O = 10V, f = 120Hz
RR without CADJ
C_ADJ = 10μF (Note2)
66
60
-
dB
75
Note:
1. Load and line regulation are specified at constant junction temperature. Change in V_D due to heating effects must be taken
into account separately. Pulse testing with low duty is used. (P_MAX = 15W)
2. C_ADJ, when used, is connected between the adjustment pin and ground.