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參數(shù)資料
| 型號： | SP4415CN |
| 英文描述： | Electroluminescent Lamp Driver with Selectable Level Outputs |
| 中文描述： | 電致發(fā)光燈驅動器，帶有可選電平輸出 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 158K |
| 代理商： | SP4415CN |
SP4415DS/06
SP4415 Electroluminescent Lamp Driver
3
Copyright 1996 Sipex Corporation
THEORY OF OPERATION
The
SP4415
is made up of three basic circuit
elements, a clock signal conditioner, a divider
chain, and a switched H-bridge network. The clock
signal conditioner circuit allows users to directly
connect a crystal oscillator output to the
SP4415
;
no buffering is necessary. The clock input features
high impedance (50 M
), low capacitance (2.5pF)
and 200mV sensitivity. The external clock should
range from (V
-1V) to ground. The
SP4415
is
optimized for 32,768Hz clock signals and is allowed
to vary from 20 kHz to 60kHz.
The externally supplied clock signal provides the
circuit with a clock source used to control the
charge and discharge phases for the coil and lamp.
The suggested oscillator frequency is 32,768Hz .
This clock frequency is internally divided to create
two internal control signals, f
and f
. For
example a 32,768Hz signal will be divided to
provide an 8,192Hz 75% duty cycle output to drive
the coil and a 256Hz 50% duty cycle output to
drive the lamp. Although the oscillator frequency
can be varied to optimize the lamp output, the ratio
of f
COIL
to f
LAMP
will always equal 32.
PIN DESCRIPTION
Pin 1 – NC - Float this pin..
Pin 2 – V
SS
- Ground connection
Pin 3 – Coil - Coil input, connect coil from V
DD
to Pin 5.
Pin 4 – Lamp2- EL voltage output, connect
directly to EL lamp.
Pin 5 – Lamp1- EL voltage output, connect
directly to EL lamp.
Pin 6 – V
DD
- Power supply for driver, connect to
system V
DD
.
Pin 7 – Level Select - Selects the number of
inductor drive pulses.
Pin 8 – Clk - Clock input for charge and
discharge cycles.
SP4415 Schematic
CLK
V
BATTERY
SCR1
SCR2
f
COIL
EL Lamp
Coil
2
3
EL1
EL2
4
8
V
ss
Level Select
V
DD
5
7
PDECODER
DECODER
PSELECTOR
C2 BIT
9 BIT COUNTER
Q
6
7 BIT COUNTER
CLR
Q
35mH/125 ohms
f
LAMP
f
LAMP
1
2
3
4
8
7
6
5
S
相關PDF資料 |
PDF描述 |
|---|---|
| SP4416UEB | Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature |
| SP4416 | Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature |
| SP4416EU | Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature |
| SP4422ANEB | Circular Connector; No. of Contacts:55; Series:MS27508; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Pin; Circular Shell Style:Box Mount Receptacle; Insert Arrangement:16-55 RoHS Compliant: No |
| SP4422AUEB | ER 14C 12#16 2#4 SKT RECP BOX RoHS Compliant: No |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SP4416 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature |
| SP4416EU | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature |
| SP4416UEB | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Electroluminescent Lamp Driver with 4-Level Light Intensity Selection Feature |
| SP4422 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Electroluminescent Lamp Driver |
| SP4422A | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Electroluminescent Lamp Driver |
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