LP02U 4/99 REV C Page 1
LP02ULP02U
LP02ULP02U
LP02U
DESCRIPTION
The LP02U Series is designed specifically for low-cost Local
Area Network applications. It provides isolated power for LAN
transceiver devices. The product operates from either 5 or 12
volts input voltage and supplies an isolated -9 volts output.
The LP02U Series is housed in an industry standard 24-pin dual-
in-line (DIP) package to permit upgrading of existing systems.
A 100kHz push-pull oscillator is used in the input stage,
complementing the units high efficiency and low noise charac-
teristics.
The LP02U Series offers the user a cost effective solution
without sacrificing reliability. A highly auto-
mated manufacturing process is employed in
which all components are surface mounted and
reflow-soldered, eliminating any hand-solder-
ing during construction. This dramatically re-
duces unit variation and improves reliability.
PACKAGE/PINOUT "K"
LP02U
NOTES:
All dimensions are in inches
(millimeters).
PIN CONNECTIONS
FUNCTION PINS
+VIN 1 & 24
-VIN 12 & 13
+VOUT 11 & 14
-VOUT 10 & 15
MECHANICAL
●●
●●
●24-PIN DIP PACKAGE
●●
●●
●INTERNAL FILTERING
●●
●●
●LOW OUTPUT NOISE
●●
●●
●TEMPERATURE RANGE: -25°C TO +70°C
●●
●●
●SURFACE MOUNT CONSTRUCTION
APPLICATIONS
●●
●●
●ETHERNET ADAPTER CARDS
●●
●●
●CHEAPERNET LOCAL AREA
NETWORKS (LANs)
FEATURES
SIDE
VIEW
TOP
VIEW
SIDE
VIEW
UNREGULATED 2.25 WATT
DUAL-IN-LINE DC/DC CONVERTER
Product Data Sheet
Internet: http://www.cdpowerelectronics.com
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Phone: 800.547.2537 Fax: 520.770.9369
Power Electronics Division, Europe
C&D Technologies (Power Electronics) Ltd.
132 Shannon Industrial Estate, Shannon, Co. Clare, Ireland
Tel: +353.61.474.133 Fax:+353.61.474.141
LP02U 4/99 REV CPage 2
Specifications typical at TA = +25°C, nominal input voltage, rated output current unless otherwise specified.
ILOAD (mA)
LP02U xxyzz K /H
OUTPUT VOLTAGE (VDC)
LOAD PERFORMANCE CURVE
0 50 100 150 200 250
11.4
11.2
11
10.8
10.6
10.4
10.2
10
9.8
9.6
9.4
9.2
9
8.8
Device Family
Indicates Lan Enabled 2 Watt Regulated Unit
Model Number
Selected from Table of Electrical Characteristics
Where:
xx = Input Voltage
y = Number of Outputs (Single "S")
zz = Output Voltage
Package Option
Screening Option
ORDERING INFORMATION
Output Short-Circuit Duration...............................................................1 second
Internal Power Dissipation ............................................................................1W
Lead Temperature (soldering, 10 seconds max)....................................+300°C
ABSOLUTE MAXUMUM RATINGS
ELECTRICAL SPECIFICATIONS
Nominal Rated Rated Input Current
Input Output Output
Voltage Voltage Current No Load Rated Load Efficiency
Model (VDC) (VDC) (mA) (mA) (mA) (%)
LP02U05S09 5 9 250 50 568 80
LP02U12S09 12 9 250 30 240 77
NOTE: Other input to output voltage options may be available. Please consult factory.
COMMON SPECIFICATIONS
Specifications typical at TA = +25°C, nominal input voltage, rated output current unless otherwise specified.
PARAMETER CONDITIONS MIN TYP MAX UNITS
INPUT
Voltage Range LP02U05S09 4.75 5 5.25 VDC
LP02U12S09 11.4 12 12.6 VDC
Voltage Rise Time
ISOLATION
Rated Voltage 500 Vrms
Test Voltage 60Hz, 10 Seconds 500 Vpk
Resistance 1 GW
Capacitance 30 pF
OUTPUT
Rated Power 2.25 W
Voltage Setpoint Accuracy ILOAD =200mA ±3 %
Ripple & Noise BW = DC to 10MHz 30 mVp-p
BW =DC to 2MHz 3 mVrms
Line Regulation High Line to Low Line 1.15 %/%
Load Regulation 25mA<ILOAD <200mA ±10 %
GENERAL
Switching Frequency 100 KHz
Package Weight 6 g
MTTF per MIL-HDBK-217, Rev. E *Circuit Stress Method
Ground Benign TA = +25°C 3.0 MHr
TA = +70°C 700 KHr
TEMPERATURE
Specification -25 +25 +70 °C
Operation -55 +85 °C
Storage -55 +100 °C
