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PT4400 Datasheet(PDF) 1 Page - Texas Instruments

Part No. PT4400
Description  75-W 48-V Input Isolated DC/DC Converter
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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PT4400 Datasheet(HTML) 1 Page - Texas Instruments

 
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For technical support and more information, see inside back cover or visit www.ti.com
PT4400 Series
75-W 48-V Input Isolated
DC/DC Converter
Standard Application
Co = Optional 330µF Electrolytic Capacitor
# VID programming pins set fo 3.3V output
Features
Up to 75W Output:
20A @3.3V, 15A @5V
Input Voltage Range:
36V to 75V
Programmable Output Voltage
91% Efficiency (PT4403)
1500 VDC Isolation
On/Off Control
Over-Current Protection
Description
The PT4400 series of power modules are single-
output isolated DC/DC converters, housed in a
compact 21-pin low-profile (12mm) package.
These modules are rated up to 75W with load
currents as high as 20A. The output voltage is set
within a pre-defined range via a 5-bit input code.
The PT4400 series operates from a standard
48-V telecom CO supply and occupies only 3.9in²
of PCB area. These modules offer OEMs a compact
and flexible high-output power source for use with
high-end microprocessors, DSPs, general purpose
logic and analog. They are suitable for distributed
power applications in both telecom and computing
environments.
Features include output over-current protection,
on/off control, output over-voltage protection
(OVP), over-temperature shutdown, under-volt-
age lockout (UVLO), and an output differential
remote sense. The modules are fully integrated
for stand-alone operation, and require no additional
components.
Ordering Information
PT4401
H = 1.3 to 3.5 Volts
PT4402
H = 1.05 to 1.75Volts
PT4403
H = 3.4 to 5.7 Volts
Pin-Out Information
Pin Function
1
Remote On/Off *
2-Vin
3-Vin
4+Vin
5+Vin
6
Pin Not Present
7
VID 0
8
VID 1
9
VID 2
10
VID 3
11
VID 4
12
(–)Remote Sense
13
-Vo
14
-Vo
15
-Vo
16
-Vo
17
+Vo
18
+Vo
19
+Vo
20
+Vo
21
(+)Remote Sense
* For more information consult
the applicable application note.
† VID 4 does not function on the
PT4402 & PT4403
SLTS160B
(Revised 7/19/2002)
PT Series Suffix (PT1234 x )
Case/Pin
Order
Package
Configuration
Suffix
Code
Vertical
N
(ENM)
Horizontal
A
(ENN)
SMD
C
(ENP)
(Reference the applicable package code drawing for
the dimensions and PC layout)
Differential Remote Sense
Output Over-Voltage Protection
Over-Temperature Shutdown
Undervoltage Lockout
Low Profile Package (12mm)
Compact PCB Layout:
(Horizontal Config. 1.45in
× 2.6in,
Vertical Config. < 1 in2)
Solderable Copper Case
Agency Approvals Pending
L
O
A
D
PT4401
+V
sns
+V
out
-V
out
-V
sns
21
17–20
13–16
12
71 1
81 0
9
VID0 - VID4
+V
in
–V
in
4, 5
2, 3
1
Remote
On/Off
PROGRAMMING PINS #
+V
OUT
+V
IN
–V
IN
–V
OUT
– REMOTE SENSE
+ REMOTE SENSE
C
o


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