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8m052291
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
8m052291 8m Class
DC to AC Inverter
* should be selected to be compatible with LCD and display driver
+ Vin -
(1)
1
3
Pulse-Width Modulated Controlled
Specifications and Applications Information
4/3/00
Preliminary
2
+Vin 100 Kohms*
The ERG 8m052291 (8m Class) low profile dc to ac inverter is specifically designed to power the Sharp LM057QC1T01 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
1234 Input .55 [14,0]
* 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
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
JST SM02(8.0)B-BHS-1-TB
2 4 pins are 0.315" [8,00] Long, 0.025" [0,63] Square and are on 0.100" [2,54] Centers.
.120 [3,05] DIA.(2X) Output .55 [14,0] 4 1 .12 [3,0]
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 NC
Con2-1 Con2-2 Con2-3 Con2-4
ACout NC NC ACout
8m052291
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 V dc
Relative Frequency
o
Typical Performance Curves
8m052291
Relative Frequency vs.Input Voltage
20%
160% 140%
Relative Brightness vs.Input Voltage
Relative Brightness
15%
120% 100% 80% 60% 40% 20%
C C
10%
o
5%
Recommended Operating Conditions
Rating Input Voltage Symbol Vi n Value +2.5 to 5.5 Units V dc
0%
-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
5.0
Input Voltage (Vdc)
Input Current vs.Input Voltage
0.80 0.70
Electrical Characteristics
Unless otherwise noted Vin = 5.00 Volts dc and Ta = 25 oC
Input Power (Watts)
4.0
Input Current (Adc)
3.00 3.50 4.00 4.50 5.00 5.50 6.00
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 37 1000 -
Typ .66 42 73 6.0
Max .74 47 -
Units A dc KHz Vrms % marms
0.60 0.50 0.40 0.30 0.20
3.0
2.0
1.0
0.0 2.50
0.10 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00
Input Voltage (Vdc)
Input Voltage (Vdc)
+Vin 5V
Vout
-
400
-
Vrms
3.3 K
-
-
19
-
madc
Disable Circuit
1.5 K Control 1K 2N3904
2N3906 Control (pin 3) 1N4148
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.