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PDF D356A Data sheet ( Hoja de datos )
| Número de pieza | D356A | |
| Descripción | Electroluminescent Lamp Driver IC | |
| Fabricantes | Durel | |
| Logotipo |  |
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General Description:
The DurelÒ D356A is part of a family of highly integrated EL
drivers based on Durel’s patented three-port (3P) topology, which
offers built-in EMI shielding. This high efficiency device is well
suited for backlighting most timepieces and liquid crystal displays
for portable electronic applications.
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Data Sheet
D356A
Electroluminescent
Lamp Driver IC
D356A
MSOP-8
Features
• High Efficiency
• Low Voltage Operation
• Small System Footprint
• Capacitor or External Clock LF Control
Applications
• Watches
• Data Organizers/PDAs
• Pagers
• LCD and Keypad Backlighting
Lamp Driver Specifications:
(Using Standard Test Circuit at Ta=25 °C unless otherwise specified.)
Parameter
Symbol Minimum Typical Maximum
Standby Current
10
Supply Current
I
23
Enable Current
50
Output Voltage
Vout
110
135
Lamp Frequency
LF
230 310
Inductor Frequency HF
23
100
30
75
220
390
Unit
nA
mA
uA
Vpp
Hz
kHz
Conditions
E = GND
E = 3.0V
E = 3.0V
CLF=5.0 nF
Standard Test Circuit
1.8mH
(3 Ohms)
1 GND
2 L-
3 VOUT
E8
CLF2 7
CLF1 6
3.0V
GND ON
OFF
5.0nF
4 L+
D356A
V+ 5
0.1µF
Load B
3.0 Vdc
1
1 page  
Typical D356A EL Driver Configurations
1.5V Analog Watch
Typical Output
Luminance= 2.6 fL (9 cd/m2)
Lamp Frequency = 220 Hz
2.2 mH
Supply Current = 11 mA
Sumida
Vout = 160 Vpp
CLS62-222KC
Load = 1 in2 Durel®3 Green EL
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1 GND
2 L-
3 VOUT
E8
CLF2 7
CLF1 6
1.5 V
1.5V
ON
GND
OFF
6.8 nF
4 L+
V+ 5
D356
1 in2
EL Lamp
1.0 µF
1.5 V
3.0V Handset LCD or Digital Watch
Typical Output
Luminance = 7.5 fL (26 cd/m2)
Lamp Frequency = 475 Hz
Supply Current = 13 mA
4.7 mH
Coilcraft
Vout = 200 Vpp
DT1608C-475
Load = 1 in2 Durel®3 Green EL
1 GND
2 L-
3 VOUT
E8
CLF2 7
CLF1 6
3.0 V
3.0V
ON
GND
OFF
3.3 nF
4 L+
V+ 5
D356
1 in2
EL Lamp
1.0 µF
3.0 V
5.0 V PDA
Typical Output
Luminance = 6 fL (21 cd/m2)
Lamp Frequency = 360 Hz
Supply Current = 18 mA
5.0 mH
Hitachi Metals
MD735L502A
Vout = 190 Vpp
Load = 4 in2 Durel® Green EL
*A 100W resistor in series with the VOUT to EL lamp
may be necessary to reduce electrical noise.
1 GND
2 L-
3 VOUT
E8
CLF2 7
CLF1 6
5.0 V
5.0V
ON
GND
OFF
4.7 nF
4 L+
100Ω
V+ 5
D356
4 in2
EL Lamp
1.0 µF
5.0 V
5
5 Page 
VII. High EL Brightness With Parallel D356A (Option 1)
Two or more D356A EL drivers may be operated in parallel to increase the brightness of the EL lamp by 50-100%.
In this circuit, an external clock signal with 50% duty cycle is needed to synchronously drive both D356A ICs. The
clock signal voltage should not exceed V+.
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1 GND
2 L-
E8
CLF2 7
ON
OFF
L 3 VOUT CLF1 6
150kΩ
4 L+
V+ 5
D356
1 GND
2 L-
E8
CLF2 7
Lamp Frequency CLK
1.0V Min
0.2V Max
L 3 VOUT CLF1 6
150kΩ
4 L+
V+ 5
D356
EL Lamp
1.0µF
Vbat
VIII. High EL Brightness With Parallel D356A (Option 2)
Two or more D356A EL drivers may be operated in parallel to increase the brightness of the EL lamp by 50-100%.
In this circuit, two D356A ICs are operating synchronously using their internal oscillators. The lamp frequency is
controlled by a shared CLF capacitor.
1 GND
E8
2 L-
CLF2 7
L 3 VOUT CLF1 6
4 L+
V+ 5
D356
1 GND
E8
2 L-
CLF2 7
L 3 VOUT CLF1 6
100Ω
4 L+
100Ω
D356
V+ 5
1.0µF
EL Lamp
ON
OFF
CLF
Vbat
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet D356A.PDF ] | |
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