1DDD356AA-M02 データシートの表示（PDF） - Unspecified
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1DDD356AA-M02 Datasheet PDF : 12 Pages
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D356A Design Ideas
I. Driving Multi-segment Lamps
The D356A may be used to drive two or more EL lamps or EL lamp areas independently. An external switching circuit
can be used to turn each lamp segment on or off. A high signal at the E input for the corresponding EL lamp will power
the segment when the IC is enabled. In this example, Segment 1 is always on when the Durel D356A is enabled.
Otherwise, always make sure that at least one segment is switched on when the driver IC is activated.
1 GND
E8
ON
OFF
2 L-
CLF2 7
CLF
L
3 VOUT CLF1 6
4 L+
V+ 5
D356
1.0uF
Vbat
EL Lamp
Segment 1
EL Lamp
Segment 2
EL Lamp
Segment 3
BAS21LT1
ON E2
OFF 2.2K 4.7K
MMBT5401LT1
BAS21LT1
BAS21LT1
MMBT5551LT1
ON E3
OFF
2.2K 4.7K
MMBT5401LT1
BAS21LT1
MMBT5551LT1
1K
100 nF
1K
100 nF
II. Two-Level Dimming
Toggle switching between two different EL lamp brightness levels may be achieved with the following circuit. When
DIM is low, the external pnp transistor is saturated and the EL lamp runs at full brightness. When DIM is high, the
external pnp turns off and the 47W resistor reduces the voltage at (V+) and dims the EL lamp.
1 GND
ON
OFF
E8
DIM High B
GND
Low B
3.0V
2 L-
CLF2 7
1kΩ
CLF
L
3 VOUT
CLF1 6
2N3906
4 L+
V+ 5
D356
47Ω
1.0uF
Vbat
EL Lamp
8
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