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参数资料
| 型号： | PT7681N |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 30 A SWITCHING REGULATOR, 350 kHz SWITCHING FREQ-MAX, MSMA27 |
| 封装： | ROHS COMPLIANT, METAL, SIP-27 |
| 文件页数： | 1/14页 |
| 文件大小： | 305K |
| 代理商： | PT7681N |
For technical support and more information, see inside back cover or visit www.ti.com
PT Series Suffix (PT1234 x )
Case/Pin
Order
Package
Configuration Suffix
Code
Vertical
N
(ENE)
Horizontal
A
(ENF)
SMD
C
(ENG)
(Reference the applicable package code
drawing for the dimensions and PC
board layout)
PT7681—5V
30-A Programmable ISR
With Margin Up/Down Controls
SLTS177
B - DECEMBER 2002 - REVISED JULY 2006
Features
5V Input Voltage
30A Output Current
4-bit Programmable Output:
2V to 3.5V
95% Efficiency
Margin Up/Down Controls
Differential Remote Sense
Description
The PT7681 Excalibur 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.
Over-Current Protection
Over-Temperature Protection
27-Pin Solderable Copper Case
1.57in PCB Area (‘N’ Suffix)
IPC Lead-Free 2
Standard Application
Cin
= Required 1500F electrolytic
Cout = Required 330F electrolytic
L1
= Optional 1H input choke
PT7681
4321
26
20-25
12
5
13-19
7-11
L
O
A
D
C
OUT
+
C
IN
+
PROGRAMMING PINS
V
IN
V
OUT
GND
SENSE(+)
SENSE(–)
STBY
VID0
VID1
VID2
VID3
L1
1H
GND
27
6
MARGUP
MARGDN
Ordering Information
PT7681
o = 2 to 3.5 Volts
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.
MARG DN
MARG UP
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