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PT7681 Datasheet

  • PT7681

  • 2V to 3.5V 30A. 5-V Input Programmable ISR w/ Margin Control

  • 10頁(yè)

  • ETC

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PT7681鈥?V
30-A Programmable ISR
With Margin Up/Down Controls
SLTS177A - DECEMBER 2002 - REVISED MARCH 2003
Features
鈥?/div>
5V Input Voltage
鈥?/div>
30A Output Current
鈥?/div>
4-bit Programmable Output:
2V to 3.5V
鈥?/div>
95% Efficiency
鈥?/div>
Margin Up/Down Controls
鈥?/div>
Differential Remote Sense
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Over-Current Protection
Over-Temperature Protection
27-Pin Solderable Copper Case
1.57in虜 PCB Area (鈥楴鈥?Suffix)
IPC Lead-Free 2
Description
The PT7681 Excalibur鈩?is a high
performance integrated switching regu-
lator (ISR), which is housed in a 27-pin
space-saving solderable copper pack-
age. Operating from a +5V input source,
the PT7681 delivers up to 30A of out-
put current over the adjustable output
voltage range of 2V to 3.5V. The high
output current and relatively small size
makes the PT7681 suitable for power-
ing high-end DSP, microprocessor,
and ASIC circuits requiring core or I/O
logic supply voltages as low as 2V. The
output voltage is programmable via a
4-bit input code.
A special feature of the PT7681 is
the Margin Up and Margin Down
controls. These controls provide a
convenient method for testing the
load circuit over its supply voltage
margins during production and quali-
fication test programs.
Other features include output short-
circuit and over-temperature protection,
a standby on/off control, and a differ-
ential remote sense to compensate for
voltage drop between the regulator and
load.
Ordering Information
PT7681o
= 2 to 3.5 Volts
PT Series Suffix
(PT1234
x
)
Case/Pin
Order
Configuration Suffix
Vertical
Horizontal
SMD
Package
Code
(ENE)
(ENF)
(ENG)
N
A
C
(Reference the applicable package code
drawing for the dimensions and PC
board layout)
Standard Application
PROGRAMMING PINS
VID0
VID1
VID2
VID3
SENSE(+)
4
3
2
1
26
L1
V
IN
7-11
1碌H
+
5
PT7681
13-19
6
27
12
20-25
V
OUT
+
C
IN
C
OUT
GND
L
O
A
D
GND
STBY
MARGUP
MARGDN
C
in
= Required 1500碌F electrolytic
C
out
= Required 330碌F electrolytic
L
1
= Optional 1碌H input choke
SENSE(鈥?
For technical support and more information, see inside back cover or visit www.ti.com

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