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8m052224
0% - 100% +Vin

(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

8m052224
DC to AC Inverter

approx. 6.6 ms*

* should be selected to be compatible with LCD and display driver

+ Vin -

(1)

1 2

3

Specifications and Applications Information
Pulse-Width Modulated Controlled
4/22/99 Preliminary

8m Class

+Vin

The ERG 8m052224 (8m Class) low profile dc to ac inverter is specifically designed to power a single tube of the Sharp LQ084V1DG21 LCD single tube display module to a moderate brightness level from a +5 volt dc source. This low profile inverter features:
1. Vin(+) 2. Vin(-) 3. Control 4. NC

8m Package Package Configuration

50 Kohms*

* value should be low enough to maintain minimum tube current at minimum brightness

+ Vin -

(1)

1 2

3

Resistive Controlled

Vmin* to +Vin

ü ü ü ü ü ü ü ü ü ü

Less Than 8 mm in Height LCD Module Specific Display Compatible Output Connector Firm Specifications Application Information Made in U.S.A. Factory Support Custom Input and Output Voltages Flexible System Interface Notebook Display Head Compatible

1 2 3 4

.55 [14,0]

c

2.35 [59,7]

* Vmin should be high enough to maintain minimum tube current

+ Vin -

(1)

1 2

3

3.58 [90,9]

Voltage Controlled

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

.116 [2,95] DIA.(2X) JST OUTPUT SM02(8.0)B-BHS-1-TB

Endicott Research Group, Inc.
2601 Wayne St., Endicott NY 13760 607-754-9187
page 4.

.55 [14,0]

.12 [3,05] .79 [20,1]

8m052224
Absolute Maximum Ratings
Rating Input Voltage Range Operating Temperature Storage Temperature Symbol Vin To Tstg Value -0.3 to +6.0 0 to +70 -40 to +85 Units Vdc
o o

8m052224
Typical Performance Curves

12% 10%

Relative Frequency vs.Input Voltage

140% 120%

Relative Brightness vs.Input Voltage

C C

Relative Frequency

8% 6% 4% 2% 0%

Relative Brightness

100% 80% 60% 40% 20%

Recommended Operating Conditions
Rating Input Voltage Symbol Vin Value +2.5 to 5.5 Units Vdc

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

2.00

2.50

3.00

3.50

4.00

4.50

5.00

5.50

6.00

2.00

2.50

3.00

3.50

4.00

4.50

5.00

5.50

6.00

Input Voltage (Vdc)
9.0 8.0

Input Voltage (Vdc)
1.40

Input Power vs.Input Voltage

Input Current vs.Input Voltage

Characteristic Input Current Operating Frequency Minimum Output Voltage Efficiency Output Current Output Voltage (when Powering a Sharp LQ084V1DG21 display)

Symbol Iin Fo Vout (min) Iout Vout

Min 37.5 1500 -

Typ 1.10 42.5 74 6.0 680

Max 1.25 47.5 -

Units
Input Power (Watts)

KHz Vrms % marms Vrms

6.0 5.0 4.0 3.0 2.0 1.0 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00

Input Current (Adc)

Adc

7.0

1.20

1.00

0.80

0.60

0.40 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00

Input Voltage (Vdc)

Input Voltage (Vdc)

After tube has been allowed to warm-up for 5 minutes

Specifications subject to change without notice

Endicott Research Group, Inc.

Made in USA
page 2.

Endicott Research Group, Inc.
page 3.