8188 Datasheet, PDF (2/12 Pages) Allegro MicroSystems – LOW-DROPOUT REGULATORS . HIGH EFFICIENCY

8188
LOW-DROPOUT
REGULATORS
IN 8
FUNCTIONAL BLOCK DIAGRAM
(1/2 of A8188SL-xx shown)
1 OUT
ENABLE 7
BIAS
DRIVE
ERROR
AMP
BANDGAP
REF.
2 GND
Dwg. FS-012-8
Always order by complete part number:
Part Number Package
A8188SL-xx 8-Lead SOIC
A8188SLT-xx 3-Lead SOT-89/TO-243AA
R_θJA
108°C/W
258°C/W
where “-xx” is the required output voltage (V_O(nom)) in tenths
(25 through 33), e.g., -30 = 3.0 volts.
OUT₁ 1
GND₁ 2
OUT₂ 3
GND₂ ⁴
A8188SL-xx
8 IN₁
VR
7 ENABLE₁
6 IN₂
VR
5 ENABLE₂
Dwg. PS-023
NOTE — There is an indeterminate resistance between terminals
2 and 4. For proper operation, terminals 2 and 4 must be
externally connected together.
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Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1999, 2000 Allegro MicroSystems, Inc.