8182 Datasheet, PDF (2/8 Pages) Allegro MicroSystems – LOW-DROPOUT, 3 V REGULATOR . HIGH EFFICIENCY

8182
LOW-DROPOUT,
3 V REGULATOR
IN 7
IN ²
ENABLE 3
FUNCTIONAL BLOCK DIAGRAM
BIAS
DRIVE
ERROR
AMP
–
1.23 V ₊
BANDGAP
REF.
For proper operation, terminals 1 and 8 should be externally connected together,
terminals 2 and 7 should be externally connected together.
8 _OUT
1 _OUT
6 COMP
5 _RESET
4 _GND
Dwg. FS-012-2
MAXIMUM ALLOWABLE OUTPUT CURRENT with device mounted on 2.24" x 2.24"
(56.9 mm x 56.9 mm) solder-coated copper-clad board in still air.
Maximum Allowable Output Current in Milliamperes with V_I = 8 V, T_J = 150°C, Period ≤10 s*
dc (Duty Cycle)
T_A
100%
90%
80%
70%
60%
50%
40%
30%
20%
25°C
150
150
150
150
150
150
150
150
150
50°C
150
150
150
150
150
150
150
150
150
70°C
145
150
150
150
150
150
150
150
150
85°C
120
130
150
150
150
150
150
150
150
* I_O = (T_J - T_A)/([V_I - V_O] R_θJA • dc) = (150 - T_A)/(5 • 108 • dc)
Output current rating can be increased (to 150 mA maximum) by heat sinking or reducing the input voltage. Conditions that produce excessive
junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated but should be avoided.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1994 Allegro MicroSystems, Inc.