PT7761-5V_09 Datasheet, PDF (1/9 Pages) Texas Instruments – 40-A Programmable Integrated

PT7761—5V
40-A Programmable Integrated
Switching Regulator Module
SLTS152
(Revised 10/24/2001)
Features
• Single Device: 40ADC
• +5V Input
• 5-bit Programmable:
1.3V to 3.5V
• 90% Efficiency
• Differential Remote Sense
• Short-Circuit Protection
• Space-Saving Package
• Solderable Copper Case
• “Current Booster” Compatible
• 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’s latest
DSPs, and µ-Processors.
The PT7761 performance extends
both the flexibility and output current
range of the “Big Hammer” 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’s Pentium®
series microprocessors.
The PT7761’s 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
Order
Suffix
Package
Code
Vertical
Horizontal
SMD
N
(EKH)
A
(EKF)
C
(EKG)
(Reference the applicable package code drawing for
the dimensions and PC board layout)
Standard Application
VID0
VID1
VID2
VID3
VID4
PROGRAMMING PINS
54321
REMOTE SENSE(+)
31
L_IN
V_IN
1 µH
9–14
PT7761
23–30
V_OUT
SYNC OUT
GND
+
C _IN
7 6 16–22
15
+
C_OUT
L
O
A
D
GND
STBY*
REMOTE SENSE(–)
Cin = Required 1500µF electrolytic
Cout = Required 330µF electrolytic
Lin = Optional 1µH input choke
For technical support and more information, see inside back cover or visit www.ti.com