Hyundai Q17 Technical & Service Manual page 34

Q17 Technical Service Manual
RC1587
MC68HC705BD7B
Features
•Fast transient response
•Low dropout voltage at up to 3A
•Load regulation: 0.05% typical
•Trimmed current limit
•On-chip thermal limiting
•Standard TO-220, TO-263, TO-263 center cut,
and TO-252 packages
Applications
®
•Pentium Class GTL+ bus supply
•Low voltage logic supply
•Post regulator for switching supply
Typical Applications
RC1587
V
V
IN = 3.3V
IN
+ ADJ
10 F
V V (1 + R2/R1) + I
OUT =
REF
RC1587-1.5
V
V
IN = 3.3V
IN
+ GND
10 F
RC1587-3.3
V V
IN = 5V
IN
+ GND
10 F
Description
The RC1587, RC1587-1.5, and RC1587-3.3 are low dropout
three-terminal regulators with 3A output current capability.
These devices have been optimized for low voltage applica-
tions including V
TT
and minimum input voltage are critical. The RC1587 is ideal
for low voltage microprocessor applications requiring a reg-
ulated output from 1.5V to 3.6V with an input supply of 5V
or less. The RC1587-1.5 offers fixed 1.5V with 3A current
capability for GTL+ bus V
offers fixed 3.3V current capability for logic IC operation.
Current limit is trimmed to ensure specified output current and
controlled short-circuit current. On-chip thermal limiting pro-
vides protection against any combination of overload and
ambient temperature that would create excessive junction
temperatures.
The RC1587, RC1587-1.5, and RC1587-3.3 are available in
the industry-standard TO-220, TO-263, TO-263 center cut,
and TO-252 (DPAK) power packages.
V
OUT
+
R1
22 F
124
R2
24.9
R2
ADJ *
V
1.5V at 3A
OUT
+
22 F
V
3.3V at 3A
OUT
+
22 F
--33--
bus termination, where transient response
termination. The RC1587-3.3
TT
1.5V at 3A
65-1587-16