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參數(shù)資料
| 型號(hào)： | MIC4827BMM |
| 廠商： | MICREL INC |
| 元件分類(lèi)： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | Low Input Voltage, 180VPP Output Voltage, EL Driver |
| 中文描述： | EL DISPLAY DRIVER, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁(yè)數(shù)： | 1/13頁(yè) |
| 文件大?。?/td> | 142K |
| 代理商： | MIC4827BMM |
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September 2001
1
MIC4827
MIC4827
Micrel
MIC4827
Low Input Voltage, 180V
PP
Output Voltage, EL Driver
Final Information
General Description
Micrel’s MIC4827 is a high output voltage, DC to AC con-
verter, designed for driving EL (Electroluminescent) lamps.
The device operates from an input voltage range of 1.8V to
5.5V, making it suitable for 1-cell Li Ion and 2- or 3-cell
alkaline/NiCad/NiMH battery applications. The MIC4827 con-
verts a low voltage DC input to a 180V
PP
AC output signal that
drives the EL lamp.
The MIC4827 is comprised of two stages: a boost stage, and
an H-bridge, lamp driver, stage. The boost stage steps the
input voltage up to +90V. The H-bridge stage then alternately
switches the +90V output to each terminal of the EL lamp,
thus creating a 180V
PP
AC signal to drive the EL lamp and
generate light.
The MIC4827 features separate oscillators for the boost- and
H-bridge stages. External resistors independently set the
operating frequency of each stage. This flexibility allows the
EL lamp circuit to be optimized for maximum efficiency and
brightness.
The MIC4827 uses a single inductor and a minimum number
of external components, making it ideal for portable, space-
sensitive applications.
The MIC4827 is available in an 8-pin MSOP package with an
ambient temperature range of –40
°
C to +85
°
C.
Typical Application
332k
3.32M
C
0.033
μ
F/100V
D1
1N4148
L1
220
μ
H
2in
2
EL LAMP
1
5
6
8
7
2
3
4
SW
CS
VA
VB
VDD
RSW
REL
GND
MIC4827
C
IN
10
μ
F
V
IN
Features
1.8V to 5.5V DC input voltage
180V
PP
regulated AC output waveform
Independently adjustable EL lamp frequency
Independently adjustable boost converter frequency
0.1
μ
A shutdown current
Applications
LCD panel backlight
Cellular phones
PDAs
Pagers
Calculators
Remote controls
Portable phones
Ordering Information
Part Number
MIC4827BMM
Ambient Temp. Range
–
40
°
C to +85
°
C
Package
MSOP-8
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
TIME (2ms/div)
V
B
(
V
A
(
V
A
—
V
B
(
High Voltage EL Driver
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MIC4830 | Low Noise 180Vp-p EL Driver |
| MIC4830YML | Low Noise 180Vp-p EL Driver |
| MIC4830YMM | Low Noise 180Vp-p EL Driver |
| MIC4832 | Low Noise 220Vp-p EL Driver |
| MIC4832YML | Low Noise 220Vp-p EL Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC4827BMM TR | 功能描述:IC EL DRIVER 180VPP OUT 8-MSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 照明，鎮(zhèn)流器控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類(lèi)型:CCFL 控制器 頻率:40 ~ 80 kHz 電流 - 電源:5mA 電流 - 輸出:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) 其它名稱(chēng):90-3991V+V01 |
| MIC4827BMMTS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC4827YMM | 功能描述:LED照明驅(qū)動(dòng)器 180V EL Driver (Lead Free) RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MIC4827YMM TR | 功能描述:LED照明驅(qū)動(dòng)器 180V EL Driver (Lead Free) RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MIC4827YMM | 制造商:Micrel Inc 功能描述:Driver IC |
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