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PT4842N Datasheet

  • PT4842N

  • DC to DC Converter

  • 14頁

  • ETC

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PT4840 Series鈥?8V
65-W Triple Output Isolated DC/DC
Converter for DSL Applications
SLTS142C - DECEMBER 2000 -REVISED SEPTEMBER 2002
Features
鈥?/div>
DSL Triple Outputs
(Independantly Regulated)
鈥?/div>
Input Voltage Range:
36V to 75V
鈥?/div>
1500VDC Isolation
鈥?/div>
On/Off Control
鈥?/div>
Current Limit
鈥?/div>
Short Circuit Protection
(All Outputs)
Fixed Frequency Operation
Over-T
emperature Shutdown
Under-Voltage Lockout
Space Saving Package:
1.9 sq. in. PCB Area (suffix N)
鈥?/div>
Solderable Copper Case
鈥?/div>
Safety Approvals:
UL60950
CSA 22.2 950
VDE EN60950
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Description
The PT4840 Excalibur鈩?power
modules are a series of isolated triple-
output DC/DC converters that
operate from a standard (鈥?8V) central
office supply. Rated for up to 65W,
these regulators are appropriate for
powering both analog and mixed-
signal circuitry. A typical application
is a chip-set for an ADSL/DSL line
card.
The output voltage combinations
offered by the PT4840 series provide
power for a low-voltage processor
core, the associated digital circuitry,
and analog support circuitry.
The PT4840 series incorporates
many features to simplify system
integration. These include a flexible
On/Off control, over-temperature
protection, and an input under-
voltage lock-out. All outputs are
current limited and short-circuit
protected. In addition, the low-
voltage outputs for processor core
and digital circuitry meet the power-
up and power-down sequencing
requirements of popular DSP ICs.
The PT4840 series is housed in
a space-saving solderable case. The
module requires no external heat sink
and can occupy as little as 1.97 in
2
of
PCB area.
Ordering Information
PT4841o
= +15/+3.3/+1.5V (65W)
PT4842o
= +12/+3.3/+1.8V (62W)
PT Series Suffix
(PT1234
x
)
Case/Pin
Configuration
Vertical
Horizontal
SMD
Order
Suffix
Package
Code
(EKD)
(EKA)
(EKC)
N
A
C
(Reference the applicable package code drawing for
the dimensions and PC layout)
Typical Application
Vo
2
Adjust
Vo
3
Adjust
21
Vo
3
adj
+V
IN
1
+V
IN
17
Vo
2
adj
Vo
1
11
+15VDC
C
OUT1
PT4841
COM 12,13
4
C
IN
3
EN 1
EN 2
Vo
2
Vo
3
鈥揤
IN
2
鈥揤
IN
15,16
22,23
DSL/ADSL
IC Chip Set
+3.3VDC
+1.5VDC
C
OUT2
C
OUT3
COM 18鈥?0
Cin = Optional
Cout = Optional; See specifications
EN1 & EN2 pins: See On/Off Enable Logic
For technical support and more information, see inside back cover or visit www.ti.com

PT4842N 產(chǎn)品屬性

  • 6

  • 電源 - 板載

  • DC DC Converters

  • PT4840

  • 隔離

  • 3

  • 75V

  • 12V

  • 3.3V

  • 1.8V

  • 2.7A，6A，7A

  • 65W

  • 1.5kV（1500V）

  • -

  • 通孔

  • 26-SIP 模塊

  • -

  • 托盤

  • -40°C ~ 85°C

  • 84%

  • 62W

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