鈥?/div>
Shutdown Control
Description
The PT7761 is a high performance
integrated switching regulator (ISR),
housed in a solderable, 31-pin space-
saving copper package. Operating
from and input voltage of +5V, the
PT7761 provides up to 40A of low-
voltage power for the industry鈥檚 latest
DSPs, and 碌-Processors.
The PT7761 performance extends
both the flexibility and output current
range of the 鈥淏ig Hammer鈥?series of
Plug-in Power modules, and provides
a state-of-the-art solution for highly
integrated digital systems that de-
mand high power supply currents at
low output voltages.
The PT7761 is programmable from
1.3V to 3.5V via a 5-bit input, which
is compatible with Intel鈥檚 Pentium廬
series microprocessors.
The PT7761鈥檚 features include a
momentary-interrupt style of short-
circuit protection, a standby control,
and a differential remote sense to
compensate for voltage drop between
the ISR and load. For additional
output current the PT7761 can
operate with up to three current
boosters.
Ordering Information
PT7761o
= 1.3 to 3.5V Regulator
* PT7769o
= 40-A Current Booster
* Consult application notes for information on
Current Booster operation
PT Series Suffix
(PT1234
x
)
Case/Pin
Configuration
Vertical
Horizontal
SMD
Order
Suffix
Package
Code
(EKH)
(EKF)
(EKG)
N
A
C
(Reference the applicable package code drawing for
the dimensions and PC board layout)
Standard Application
PROGRAMMING PINS
VID0
VID1
VID2
VID3
VID4
REMOTE SENSE(+)
5
4
3
2
1
31
L
IN
V
IN
1
碌
H
+
9鈥?4
PT7761
7
6
16鈥?2
15
23鈥?0
V
OUT
C
IN
SYNC OUT
GND
STBY*
+
C
OUT
GND
REMOTE SENSE(鈥?
L
O
A
D
C
in
= Required 1500碌F electrolytic
C
out
= Required 330碌F electrolytic
L
in
= Optional 1碌H input choke
For technical support and more information, see inside back cover or visit www.ti.com
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