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參數(shù)資料
| 型號(hào)： | IMP527EMA |
| 廠商： | IMP INC. |
| 英文描述： | SINGLE CELL BATTERY POWERED ELECTROLUMINESCENT LAMP DRIVER/INVERTER |
| 中文描述： | 單電池供電的電致發(fā)光燈驅(qū)動(dòng)器/逆變器 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 149K |
| 代理商： | IMP527EMA |
2000 IMP, Inc.
408-432-9100/www.impweb.com
1
IMP52
7
7
P
OWER
M
ANAGEMENT
Sing
le Cell Batt
er
er
Electr
oluminescent Lam
p
p
Dr
iv
iv
er/In
v
v
er
er
t
t
er
er
y P
o
o
w
w
er
er
ed
N
Audio/TV remote control units
N
Pagers/Cellular phones
N
PDAs
N
Clocks and radios
N
Portable GPS receivers
N
LCD modules
N
Toys
N
Wide operating voltage range - from 0.9V to 2.5V
N
Simple design requires few passive components
N
180V peak-to-peak typical AC output voltage
N
Adjustable output frequency controls lamp
color and power consumption
N
Adjustable converter frequency minimizes
circuit power consumption
N
Disable mode extends battery life
N
Disable current 1μA typical
N
Compact MicroSO package option
Key Features
Applications
Block Diagram
–
+
527_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
IMP527
Bridge
Output
Driver
Q
Q
Q
V
REF
Lamp Drive
Oscillator
C
GND
5
R
EL-OSC
8
Q
The IMP527 is an Electroluminescent (EL) lamp driver designed for
systems that must operate down to 1 volt and below. The input supply
voltage range is 0.9V to 2.5V. Typical output lamp drive voltage is 180V.
All four EL lamp-driving functions are on-chip. These are the switch-
mode power supply, its high-frequency oscillator, the high-voltage
H-bridge lamp driver and its low-frequency oscillator. EL lamps of up to
6nF capacitance can be driven to high brightness.
The circuit requires few external components; one inductor, one diode,
one capacitor and two resistors. The resistors set the frequency for the
two oscillators.
A disable mode puts the chip into a low current-drain state. When dis-
abled, quiescent current drops to 1
μ
Atypical with a V
DD
of 1.5V. The chip
can be disabled by connecting R
SW
, the oscillator frequency setting resis-
tor, to ground. A disable pad (active low), accessible only on the die, can
also be used to disable the driver.
An internal circuit shuts down the switching regulator when the lamp
drive voltage exceeds 180V peak-to-peak. This conserves power and
extends battery life.
The IMP527 is available in MicroSO and SO-8 packages and in die form.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IMP527ESA | SINGLE CELL BATTERY POWERED ELECTROLUMINESCENT LAMP DRIVER/INVERTER |
| IMP527 | Single Cell Battary Powered Electroluminescent Lamp Driver/Inverter(單電池供電電致發(fā)光燈驅(qū)動(dòng)器/反相器) |
| IMP528 | HIGH-VOLTAGE EL LAMP DRIVER |
| IMP528D1 | HIGH-VOLTAGE EL LAMP DRIVER |
| IMP528EMA | HIGH-VOLTAGE EL LAMP DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IMP527ESA | 制造商:IMP 制造商全稱:IMP 功能描述:SINGLE CELL BATTERY POWERED ELECTROLUMINESCENT LAMP DRIVER/INVERTER |
| IMP528 | 制造商:IMP 制造商全稱:IMP 功能描述:HIGH-VOLTAGE EL LAMP DRIVER |
| IMP528D | 制造商:IMP 制造商全稱:IMP 功能描述:HIGH-VOLTAGE EL LAMP DRIVER |
| IMP528D1 | 制造商:IMP 制造商全稱:IMP 功能描述:HIGH-VOLTAGE EL LAMP DRIVER |
| IMP528EMA | 制造商:IMP 制造商全稱:IMP 功能描述:HIGH-VOLTAGE EL LAMP DRIVER |
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