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8m052519
5% - 100% +Vin
3 Dimming Options
(valid when the "C" jumper is removed)
Endicott Research Group, Inc.
2601 Wayne St., Endicott NY 13760 607-754-9187 Fax 607-754-9255 http://www.ergpower.com
8m052519 8m Class
DC to AC Inverter
approx. 5 ms*
* should be selected to be compatible with LCD and display driver
+ Vin -
(1)
1
3
Pulse-Width Modulated Controlled
Specifications and Applications Information
6/15/01
Preliminary
2
+Vin 100 Kohms*
The ERG 8m052519 (8m Class) low profile dc to ac inverter is specifically designed to power the EDT LCD display module to a moderate brightness level from a +5 volt dc source. This low profile inverter features:
1 3
8m Package Package Configuration
1 2 3 4
* value should be low enough to maintain minimum tube current at minimum brightness
+ Vin -
(1)
Resistive Controlled
2
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]
c
2.35 [59,7]
3.58 [90,9]
* Vmin should be high enough to maintain minimum tube current
+ Vin -
(1)
1
3
Voltage Controlled
Pin Descriptions
Input Connector Output Connector
JAE IL-G-4P-S3L2-E .120 [3,05] DIA.(2X)
2 4 pins are 0.315" [8,00] Long, 0.025" [0,63] Square and are on 0.100" [2,54] Centers.
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
page 4.
Con1-1 Con1-2 Con1-3 Con1-4
Vin(+) GND Control * N/C
Con2-1 Con2-2 Con2-3 Con2-4
ACout N/C N/C ACout
Output
.55 [14,0]
4
1
.12 [3,05] .79 [20,1]
* Valid when the "C" Jumper is removed
8m052519
Absolute Maximum Ratings
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
15% 20%
Typical Performance Curves
Relative Frequency vs.Input Voltage
140% 120%
8m052519
Relative Brightness vs.Input Voltage
Relative Frequency
V dc
o
Relative Brightness
100% 80% 60% 40% 20% 0%
C C
10%
o
5%
0%
Recommended Operating Conditions
Rating Input Voltage Symbol Vi n Value +2.5 to 5.5 Units V dc
3.0 2.5
-5% 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00
2.50
3.00
3.50
4.00
4.50
5.00
5.50
6.00
Input Voltage (Vdc)
Input Power vs.Input Voltage
Input Voltage (Vdc) Input Current vs.Input Voltage
0.50
Electrical Characteristics
Unless otherwise noted Vin = 5.00 Volts dc and Ta = 25 oC
Input Power (Watts)
0.40
Characteristic Input Current Operating Frequency Minimum Output Voltage Efficiency Output Current Output Voltage (when Powering a load simulating the referenced display) Pin3 Input Current Requirement
Symbol Iin Fo Vout (min) Iout
Min 34 1000 -
Typ .41 39 73 5
Max .48 44 -
Units A dc KHz Vrms % marms
2.0 1.5 1.0 0.5 0.0 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00
Input Current (Adc)
0.30
0.20
0.10
0.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00
Input Voltage (Vdc)
Input Voltage (Vdc)
Vout
-
300
-
Vrms
3.3 K
+Vin 5V
-
-
11
-
madc
Disable Circuit
1.5 K 1K Control 2N3904
2N3906 Control (pin 3) 1N4148 Valid with the "C" jumper removed
After tube has been allowed to warm-up for 5 minutes External Disable Circuit shown on page 3.
Specifications subject to change without notice.
Endicott Research Group, Inc.
Made in USA
page 2.
Endicott Research Group, Inc.
page 3.