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General Description:
The Durel

D371 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-performance device uses a
proprietary circuit design for programmable wave-shaping for low-
noise performance in applications that are sensitive to audible and
electrical noise.
Data Sheet
D371A
Electroluminescent
Lamp Driver IC
MSOP-10
• Flexible Wave Shaping Capability • Cellular Phones and Handsets
• High Efficiency • Data Organizers/PDAs
• Small Package Size • LCD and Keypad Backlighting
• Adjustable Output Frequency
• High Voltage AC Output
• External Clock Compatible
Features Applications
Standard Test Circuit
nA E = GND
mA E = 3.0V
uA E = 3.0V
Vpp
Hz CLF=3.9 nF
kHz CHF=68 pF
Parameter Symbol Minimum Typical Maximum Unit Conditions
(Using Standard Test Circuit at Ta=25 °C unless otherwise specified.)
Lamp Driver Specifications:
Standby Current 5 1000
Supply Current I 15 18
Enable Current 15
Output Voltage Vout 160 188 220
Lamp Frequency LF 190 260 330
Inductor Frequency HF 23
D371A
1
2
3
4
5
6
7
8
9
10CHF
CLF
E
DCH
GND
N/C
L-
Vout
L+
V+
Load A
3.9 nF
68 pF
D371A
+3.0 V
0.1 uF
2.2 mH /
4 Ohms DCR
OFF
ON
GND
3.0V