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8m052329
5% - 100% +Vin 0 approx. 1.5 ms*
3 Dimming Options
Endicott Research Group, Inc.
2601 Wayne St., Endicott NY 13760 607-754-9187 Fax 607-754-9255 http://www.ergpower.com
8m052329
DC to AC Inverter
* should be selected to be compatible with LCD and display driver
+ Vin -
(1)
1 2
3
Pulse-Width Modulated Controlled
Specifications and Applications Information
12/16/99
Preliminary
8m Class
+Vin
The ERG 8m052329 (8m Class) low profile dc to ac inverter is specifically designed to power the Sharp LM64P831 LCD display module to a moderate brightness level from a +5 volt dc source.
100 Kohms*
8m Package Package Configuration
1 2 3 4
This low profile inverter features:
1 2 3
* value should be low enough to maintain minimum tube current at minimum brightness
+ Vin -
(1)
Resistive Controlled
ü ü ü ü ü ü ü ü ü
Vmin* to +Vin
Less Than 8 mm in Height LCD Module Specific Display Compatible Output Connector Firm Specifications Application Information Designed, Manufactured and Supported in the USA Custom Input and Output Voltages Flexible System Interface Notebook Display Head Compatible
Input
.55 [14,0]
2.35 [59,7] 3
3.58 [90,9]
* Vmin should be high enough to maintain minimum tube current
+ Vin -
(1)
1 2
Voltage Controlled
Pin Descriptions
Input Connector
4 pins are 0.315" [8,00] Long, 0.025" [0,63] Square and are on 0.100" [2,54] Centers.
Output Connector
Mitsumi M60-04-30-134P .116 [2,95] DIA.(2X)
Note 1 Input by-pass capacitor (25 uf - 100uf) may be required to reduce reflected ripple.
Endicott Research Group, Inc.
2601 Wayne St., Endicott NY 13760 607-754-9187
Con1-1 Con1-2 Con1-3 Con1-4
Vin(+) GND Control NC
Con2-1 Con2-2 Con2-3 Con2-4
ACout NC NC ACout
Output
.55 [14,0]
4
1
.12 [3,0] .79 [20,1]
page 4.
8m052329
14%
Typical Performance Curves
Relative Frequency vs.Input Voltage
140% 120%
8m052329
Relative Brightness vs.Input Voltage
Absolute Maximum Ratings
Relative Frequency
12%
Relative Brightness
3.00 3.50 4.00 4.50 5.00 5.50 6.00
Rating Input Voltage Range Operating Temperature Storage Temperature
Symbol Vi n To Tstg
Value -0.3 to +5.5 0 to +70 -40 to +85
Units V dc
o o
10% 8% 6% 4% 2% 0%
100% 80% 60% 40% 20%
C C
Recommended Operating Conditions
Rating Input Voltage Symbol Vi n Value +2.5 to 5.5 Units V dc
-2% 2.50
Input Voltage (Vdc)
Input Power vs.Input Voltage
2.50
3.00
3.50
4.00
4.50
5.00
5.50
6.00
Input Voltage (Vdc)
Input Current vs.Input Voltage
4.0
0.65 0.60
Electrical Characteristics
Unless otherwise noted Vin = 5.00 Volts dc and Ta = 25 oC
Input Power (Watts)
3.5 3.0 2.5 2.0 1.5 1.0 0.5 2.50 3.00 3.50
Input Current (Adc)
4.00 4.50 5.00 5.50 6.00
0.55 0.50 0.45 0.40 0.35 0.30 0.25
Characteristic Input Current Operating Frequency Minimum Output Voltage Efficiency Output Current Output Voltage (When Powering a Load simulating the referenced display)
Symbol Iin Fo Vout (min) Iout Vout
Min 29 1100 -
Typ .56 34 74 5.3 3 90
Max .64 39 -
Units A dc KHz Vrms % marms Vrms
Input Voltage (Vdc)
2.50
3.00
3.50
4.00
4.50
5.00
5.50
6.00
Input Voltage (Vdc)
+Vin 5V 3.3 K 2N3906 1.5 K Control 1K 2N3904 1N4148 Control (pin 3)
After tube has been allowed to warm-up for 5 minutes External Disable Circuit shown on page 3.
Specifications subject to change without notice.
Disable Circuit
Endicott Research Group, Inc.
Made in USA
page 2.
Endicott Research Group, Inc.
page 3.