8220 THRU 8233
LOW-DROPOUT
REGULATORS
FUNCTIONAL BLOCK DIAGRAM
3
4
IN
OUT
DRIVE
BIAS
ERROR
AMP
1
ENABLE
BANDGAP
REF.
2
GND
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.
Allowable Total Average (10 ms) Output Current in Milliamperes with TJ = 150°C, Duty Cycle = 100%†
VI - VO
TA
1.5
100
100
100
100
2.0
100
100
100
100
2.5
100
100
100
100
3.0
100
100
100
98
3.5
100
100
100
84
4.0*
100
100
91
4.5*
100
100
81
25°C
50°C
70°C
85°C
74
66
* Absolute maximum peak output current rating is 100 mA; absolute maximum input voltage is 7 V.
† IO = (TJ – TA)/([VI – VO] RθJA x dc) = (150 – TA)/([VI – VO] x 220 x 1.00)
Output current rating can be increased (to 100 mA maximum) by additional heat sinking or reducing the duty cycle.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 2000, Allegro MicroSystems, Inc.
SANKEN [ SANKEN ELECTRIC ]
