PT7671 Datasheet, PDF (1/9 Pages) Texas Instruments – 30-A Programmable Integrated Switching Regulator

PT7671—5 V
30-A Programmable
Integrated Switching Regulator
SLTS176A - NOVEMBER 2002 - REVISED JUNE 2003
Features
• 5 V Input Voltage
• 30 A Output Current
• 5-bit Programmable Output:
1.3 V to 3.5 V
• 93 % Efficiency
• Differential Remote Sense
• Over-Current Protection
• Over-Temperature Protection
• 27-Pin Solderable Copper Case
• 1.57 in² PCB Area (‘N’ Suffix)
• IPC Lead-Free 2
Description
The PT7671 Excalibur™ high perfor-
mance integrated switching regulator
(ISR) is rated for up to 30 A. Housed in
a 27-pin, space-saving, solderable cop-
per package, the PT7671 delivers a
higher output current than many mod-
ules of similar size. This makes it an
ideal choice where both a high output
current and minimum board space are
desirable. The PT7671 operates from a
+5-V input bus and produces a tightly
regulated output voltage that is pro-
grammable over the range, 1.3 V to
3.5 V. The output voltage is selected via
5-bit input code, which is compatible
with VRM specifications.
The PT7671 is most suitable for
powering high-end DSP, ASIC, and
microprocessor circuits that require
core or I/O logic supply voltages as low
as 1.3 V.
Other features include output short-
circuit and over-temperature protection,
a standby control, and a differential
remote sense to compensate for voltage
drop between the regulator and load.
The PT7671 is also pin compatible
with the 20-A rated PT7711.
Ordering Information
PT7671o = 1.3 to 3.5 Volts
PT Series Suffix (PT1234 x )
Case/Pin
Order Package
Configuration Suffix Code
Vertical
N
Horizontal A
SMD
C
(ENE)
(ENF)
(ENG)
(Reference the applicable package code
drawing for the dimensions and PC
board layout)
Standard Application
VID0
VID1
VID2
VID3
VID4
V_IN
PROGRAMMING PINS
L1
1 µH
64321
7–11
PT7671
+
C_IN
5 13–19
GND
STBY
SENSE(+)
26
20–25
V_OUT
L
12
+
O
C_OUT
A
D
GND
SENSE(–)
Cin = Required 1500 µF electrolytic
Cout = Required 330 µF electrolytic
L1 = Optional 1 µH input choke
For technical support and more information, see inside back cover or visit www.ti.com