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參數(shù)資料
| 型號： | IMP528ESA |
| 廠商： | IMP INC. |
| 英文描述： | HIGH-VOLTAGE EL LAMP DRIVER |
| 中文描述： | 高壓發(fā)光燈驅(qū)動器 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 134K |
| 代理商： | IMP528ESA |
2001 IMP, Inc.
408-432-9100/www.impweb.com
1
IMP528
P
OWER
M
ANAGEMENT
High-
V
V
olt
– 220 V
The IMP528 is an Electroluminescent (EL) lamp driver with the four EL
lamp driving functions on-chip. These are the switch-mode power sup-
ply, its high-frequency oscillator, the high-voltage H-bridge lamp driver
and its low-frequency oscillator. The IMP528 drives EL lamps of up to
50nF capacitance to high brightness; EL lamps with capacitances greater
than 50nF can be driven, but will be lower in light output. The typical
regulated output voltage that is applied to the EL lamp is 220V peak-to-
peak. The circuit requires few external components; a single inductor,
single diode, two capacitors and two resistors. Two of these resistors
set the frequency for two internal oscillators.
Block Diagram
ag
e EL Lam
PP
Dr
iv
iv
e
e
p Dr
iv
iv
er
er
N
GPS units/Pagers/Cellular phones
N
PDAs/Handheld computers
N
Safety illumination
N
Portable instrumentation
N
Battery-operated displays
N
LCD modules
N
Toys
N
220V peak-to-peak typical AC output voltage
N
Low Power: 420μA typical V
DD
current
N
Wide operating voltage range-from 2.0V to 6.5V
N
Large output load capability - drives lamps
with more than 50nF capacitance
N
Eliminates external protection resistor in series
with EL lamp
N
Adjustable output lamp frequency for control of
lamp color, lamp life, and power consumption
N
Adjustable converter frequency to minimize
power consumption
N
High-Voltage CMOS Process
N
MicroSO package option
Key Features
Applications
–
+
528_01.eps
V
DD
1
L
X
4
C
S
3
V
A
7
V
B
6
R
SW-OSC
2
Switch
Oscillator
Regulation
Control
IMP528
Bridge
Output
Driver
Q
Q
Q
V
REF
Lamp Drive
Oscillator
C
GND
5
R
EL-OSC
8
Q
Unlike other EL lamp drivers, the IMP528 does not require an external
protection resistor in series with the EL lamp.
The IMP528 operates over a 2.0V to 6.5V supply voltage range. A
regulated, low-power source can supply the low quiescent current of the
IMP528. The inductor may be driven from an independent, unregulated
supply voltage in dual supply applications.
An internal circuit shuts down the switching regulator when the lamp
drive voltage reaches 220V peak-to-peak. This conserves power and
extends battery life.
The IMP528 is available in MicroSO and SO-8 packages and in die or
wafer form.
相關PDF資料 |
PDF描述 |
|---|---|
| IMP560(中文) | Power Efficient EL Lamp Driver(高效率的電致發(fā)光(EL)燈驅(qū)動器) |
| IMP560EMA | POWER EFFICIENT EL LAMP DRIVER |
| IMP560ESA | POWER EFFICIENT EL LAMP DRIVER |
| IMP560 | Power Efficient EL Lamp Driver(高效率的電致發(fā)光(EL)燈驅(qū)動器) |
| IMP525 | Sing Single Cell Batt le Cell Batterery Powered Electroluminescent Lamp Driv er/Inverter(單節(jié)電池供電的電致發(fā)光（EL）燈驅(qū)動器/反相器) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| IMP528ESA/T | 制造商:IMP 制造商全稱:IMP 功能描述:Ballast/Backlight Controller/Driver |
| IMP528ESAT | 制造商:IMP 功能描述:NEW |
| IMP55T500 | 制造商:IMP 功能描述:55T500 |
| IMP55T502 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Interface IC |
| IMP560 | 制造商:IMP 制造商全稱:IMP 功能描述:POWER EFFICIENT EL LAMP DRIVER |
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