8220 Datasheet, PDF (2/8 Pages) Allegro MicroSystems – LOW-DROPOUT REGULATORS . HIGH EFFICIENCY

8220 THRU 8233
LOW-DROPOUT
REGULATORS
IN 3
FUNCTIONAL BLOCK DIAGRAM
4 OUT
ENABLE 1
BIAS
2 GND
DRIVE
ERROR
AMP
BANDGAP
REF.
Dwg. FS-012-9
A82xxSLH Maximum Allowable Average 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.
T_A
25°C
Allowable Total Average (10 ms) Output Current in Milliamperes with T_J = 150°C, Duty Cycle = 100%†
V_I - V_O
1.5
2.0
2.5
3.0
3.5
4.0*
4.5*
100
100
100
100
100
100
100
50°C
100
100
100
100
100
100
100
70°C
100
100
100
100
100
91
81
85°C
100
100
100
98
84
74
66
* Absolute maximum peak output current rating is 100 mA; absolute maximum input voltage is 7 V.
† I_O = (T_J – T_A)/([V_I – V_O] R_θJA x dc) = (150 – T_A)/([V_I – V_O] x 220 x 1.00)
Output current rating can be increased (to 100 mA maximum) by additional heat sinking or reducing the duty cycle.
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Copyright © 2000, Allegro MicroSystems, Inc.