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參數資料
| 型號： | PT3408N |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 35 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數： | 1/15頁 |
| 文件大小： | 320K |
| 代理商： | PT3408N |
For technical support and more information, see inside back cover or visit www.ti.com
Standard Application
Features
Input Voltage Range:
36V to 75V
35W Output Power
90% Efficiency
1500 VDC Isolation
Low Profile (8 mm)
Adjustable Output Voltage
Dual-Logic On/Off Enable
Power-Up Sequence Control
PT3400 Series
35-W 48-V Input Isolated
DC/DC Converter
SLTS164B - JULY 2002 - REVISED OCTOBER 2002
Ordering Information
PT3401
H = 3.3V/10A (33W)
PT3402
H = 2.5V/12A (30W)
PT3403
H = 1.8V/12A (21.6W)
PT3404
H = 1.5V/16A (24W)
PT3405
H = 1.4V/16A (22.4W)
PT3406
H = 1.2V/16A (19.2W)
PT3407
H = 1V/16A
(16W)
PT3408
H = 5V/7A
(35W)
Pin-Out Information
Pin
Function
1
EN 1
2
EN 2*
3–Vin
4+Vin
5SEQ
6Vout Adj
7–Vsense
8–Vout
9–Vout
10 –Vout
11 +Vout
12 +Vout
13 +Vout
14 +Vsense
* Negative logic
Shaded functions indicate those
pins that are referenced to –Vin.
Description
The PT3400 Excalibur power modules
are a series of 35-W rated DC/DC converters
housed in a low-profile space-saving copper
case. Fully isolated for telecom applications,
the series includes a number of standard volt-
ages, including 1.0 VDC. Other applications
include industrial, high-end computing, and
other distributed power applications that
require input-to-output isolation.
PT3400 modules incorporate a feature
that simplifies the design of multiple voltage
power supplies in DSP and ASIC applications.
Using the SEQ control pin, the output voltage
of two PT3400 modules in a power supply
system can be made to self sequence at power-
up. Other features include output voltage
adjust, over-current protection, input under-
voltage lockout, and a differential remote
sense to compensate for any voltage drop
between the converter and load.
Differential Remote Sense
Over-Current Protection
Space Saving Package
Solderable Copper Case
Safety Approvals Pending
PT Series Suffix (PT1234x )
Case/Pin
Order
Package
Configuration
Suffix
Code
Vertical
N
(EPL)
Horizontal
A
(EPM)
SMD
C
(EPN)
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)
L
O
A
D
* Remote Sense (–)
Remote Sense (+)
+V
OUT
–V
OUT
V
O Adj
+V
IN
–V
IN
SEQ
C
OUT
330F
+
PT3400
1
2
11–13
8–10
14
7
3
4
–V
IN
+V
IN
EN 1
EN 2
SEQ
V
o Adj
6
5
+V
OUT
–V
OUT
+V
SENSE
–V
SENSE
An output capacitor is required on models
with an output voltage less than 2.5V.
* –Vsense (pin 7) must be connected to -Vout ,
either at the load or directly to pin 8 of the
converter.
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