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PT3320 Series
30-W 48-V Input
Isolated DC/DC Converter
Standard Application
Cin
= Optional 100F/100V electrolytic
Cout = Required 330F electrolytic (See Notes)
Q
1
= N-Channel MOSFET
R
1/C1 = Optional (see application notes)
PT3320
2
19
7, 8, 9
14-17
4-6
10-12
13
L
O
A
D
C
IN
+
V
O Adjust
+V
IN
Inhibit
+REMOTE SENSE
–REMOTE SENSE
+V
O
–V
O
–V
IN
Q
1
C
OUT
+
18
R
1
C
1
Features
Input Voltage Range:
36V to 75V
1500 VDC Isolation
On/Off Control
Vo Adjust
Differential Remote Sense
Current Limit
Short-Circuit Protection
Over-Temperature Shutdown
Description
The PT3320 series is a single-output
isolated DC/DC converter, housed in a
19-pin aluminum SIP package. These
modules are UL, CSA, and VDE ap-
proved for telecom applications, and
rated at 30 watts or 8 A. Standard output
voltages range from 1.8 V to 15 V, each
adjustable by up to ±10% of nominal.
Operating features include a remote
on/off control, an under-voltage-lockout
(UVLO), and a differential remote sense.
The PT3320 series also incorporates
many protection features. These include
output current limit, short-circuit pro-
tection, and over-temperature shutdown.
A 330F of output capacitance is
required for proper operation.
Ordering Information
PT3321
H = 3.3V/8A (26.4W)
PT3322
H = 5.0V/6A
PT3323
H = 12.0V/2.5A
PT3324
H = 15.0V/2A
PT3325
H = 2.0V/8A (16W)
PT3326
H = 2.5V/8A (20W)
PT3327
H = 1.8V/8A (14.4W)
PT3328
H = 5.2V/6A
Pin-Out Information
Pin Function
1
Do Not Use
2
Remote On/Off
3
Do Not Use
4-Vin
5-Vin
6-Vin
7+Vin
8+Vin
9+Vin
10
-Vo
11
-Vo
12
-Vo
13
-Remote Sense
14
+Vo
15
+Vo
16
+Vo
17
+Vo
18
Vo Adjust
19
+Remote Sense
For more information,
see application notes.
SLTS018B
(Revised 4/9/2002)
Undervoltage Lockout
UL1950 Recognized
Flexible SIP Package
CSA 22.2 950 Certified
EN60950 Approved
VDE Licensed
4.9 x106 Hrs MTBF
Meets FCC Class A
Radiated Limits
PT Series Suffix (PT1234 x )
Case/Pin
Order
Package
Configuration
Suffix
Code *
Vertical
N
(EHG)
Horizontal
A
(EHH)
SMD
C
(EHJ)
* Previously known as package styles 840 &
850.
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)