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8m052423
5% - 100% +Vin 0 approx. 5 ms*

(valid when the "C" jumper is removed)

3 Dimming Options

Endicott Research Group, Inc.
2601 Wayne St., Endicott NY 13760 607-754-9187 Fax 607-754-9255 http://www.ergpower.com

8m052423
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
7/24/00
Preliminary

8m Class

+Vin

The ERG 8m052423 (8m Class) low profile dc to ac inverter is specifically designed to power the Hitachi LMG7525RPFF LCD display module to a moderate brightness level from a +5 volt dc source.
100 Kohms*

8m Package Package Configuration
1234 Input

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

.55[14,0]

c

2.35[59,7]
1 2 3

3.58[90,9]

* Vmin should be high enough to maintain minimum tube current

+ Vin -

(1)

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

Note 1 Input by-pass capacitor (25 uf - 100uf) may be required to reduce reflected ripple.

.120[3,05] Dia.(2x) Output .55[14,0] 1 .12[3,05] .79[20,1]

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

* Valid when the "C" Jumper is removed
page 4.

8m052423
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
Relative Frequency
6% 5% 4% 3% 2% 1% 0% -1%

Typical Performance Curves
Relative Frequency vs.Input Voltage
140% 120%

8m052423

Relative Brightness vs.Input Voltage

V dc
o o

C C

Relative Brightness

100% 80% 60% 40%

Recommended Operating Conditions
Rating Input Voltage Symbol Vi n Value +2.5 to 5.5 Units V dc

3.00

3.50

4.00

4.50

5.00

5.50

6.00

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

3.0

0.44 0.43

Electrical Characteristics
Unless otherwise noted Vin = 5.00 Volts dc and Ta = 25 C
o

2.8

Input Power (Watts)

Input Current (Adc)
3.50 4.00 4.50 5.00 5.50 6.00

2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 3.00

0.42 0.41 0.40 0.39 0.38 0.37

Characteristic Input Current Operating Frequency Minimum Output Voltage Efficiency Output Current Output Voltage (When powering a Hitachi LMG7525RPFF display.) Pin3 Input Current Requirement

Symbol Iin Fo Vout (min) Iout Vout -

Min 26 10 0 0 -

Typ .420 31 81 5.25 3 25 11

Max .475 36 -

Units A dc KHz Vrms % marms

Input Voltage (Vdc)

3.00

3.50

4.00

4.50

5.00

5.50

6.00

Input Voltage (Vdc)

+Vin 5V

Vrms
3.3 K

madc

Disable Circuit
1.5 K Control 1K 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.