mic4832yml Micrel Semiconductor, mic4832yml Datasheet

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mic4832yml

Manufacturer Part Number
mic4832yml
Description
Mic4832 Low Noise 220vp-p El Driver
Manufacturer
Micrel Semiconductor
Datasheet

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Quantity
Price
Part Number:
MIC4832YML
Manufacturer:
MICREL
Quantity:
12 000
Part Number:
MIC4832YML
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
mic4832ymlTR
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OSRAM
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4 588
General Description
The MIC4832 is a low noise 220Vp-p electroluminescent
lamp (EL) driver. Using advanced Bipolar, CMOS, DMOS
(BCD) technology, the MIC4832 integrates a high voltage
boost converter and an H-bridge driver for driving a large
EL lamp. The MIC4832 can drive large panel displays for
mobile
electronics where EL panels are used for backlighting.
The MIC4832 offers design flexibility with adjustable lamp
and boost converter frequencies, simply by applying
external resistors. A new H-Bridge design reduces audible
noise by creating smoother AC voltage across the EL
panel.
The MIC4832 is offered in MLF
8 lead-free and RoHS compliant packaging with a -40°C to
85°C junction temperature range.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
MLF and MicroLeadFrame is a registered trademark of Amkor Technologies, Inc.
November 2007
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
phones,
multimedia
®
players
3mm x 3mm and MSOP-
or
automotive
Low Noise EL Driver
Features
• 1.8V to 5.5V DC input voltage
• 220Vpp output voltage capable
• Low audible noise EL drive waveform
• Supports EL panel sizes up to 3in
• Low 45µA operating supply current
• Small inductor size with low profile (220uH)
• Tiny 8-pin 3mm x 3mm MLF
• Adjustable boost converter frequency
• Adjustable EL lamp frequency
• 10nA shutdown current
Applications
• LCD panel backlight
• Mobile Phones
• PDAs
• Pagers
• Calculators
• Multimedia Players
• Remote controls
• GPS Receivers
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Low Noise 220Vp-p EL Driver
MIC4832
®
package
2
(19cm
M9999-111507-B
2
)

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mic4832yml Summary of contents

Page 1

General Description The MIC4832 is a low noise 220Vp-p electroluminescent lamp (EL) driver. Using advanced Bipolar, CMOS, DMOS (BCD) technology, the MIC4832 integrates a high voltage boost converter and an H-bridge driver for driving a large EL lamp. The MIC4832 ...

Page 2

... Micrel Ordering Information Part Number Junction Temp. Range MIC4832YML –40° to +85°C MIC4832YMM –40° to +85°C Note *MLF® GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. Pin Configuration 8-Pin MSOP (MM) Pin Description Pin Number ...

Page 3

Micrel Absolute Maximum Ratings Supply Voltage (V )...................................... –0.5V to 6.0V DD Output Voltage (V ) ..................................... –0.5V to 120V CS EL Lamp Terminals ( )................................... Switch Voltage (Vsw) ..................................... -0.5V to 120V Frequency Control ...

Page 4

Micrel Typical Characteristics November 2007 4 MIC4832 M9999-111507-B ...

Page 5

Micrel Functional Diagram Functional Description Overview The MIC4832 is a high-voltage EL driver with an AC output voltage of 220V peak-to-peak capable of 2 driving EL lamps Input supply current for the MIC4832 is typically ...

Page 6

Micrel Time (2ms/div) Figure 2. 100Hz Output Waveform Switching Frequency The switching frequency of the converter is controlled via an external resistor between R and V pin of the device. The switching frequency DD increases as the resistor value decreases. ...

Page 7

Micrel Application Information Inductor A 220µH Murata (LQH4C221K04) inductor is recommended for most applications. inductors with smaller values can handle more current. Lowering the inductance allows the boost regulator to draw more input current to deliver more energy every cycle. ...

Page 8

Micrel Application Circuit Lamp Frequency Size Capacitance 2 (inch ) (nF) 0 Note: Table 1 applies to circuit shown in Figure 5. Table 1: Recommended R November 2007 Figure 5: Typical Li-Ion Powered ...

Page 9

Micrel Layout Recommendation November 2007 Top Bottom 9 MIC4832 M9999-111507-B ...

Page 10

Micrel Package Information November 2007 8-Pin MSOP (MM) 8-Pin 3mm x 3mm MLF (ML) 10 MIC4832 M9999-111507-B ...

Page 11

Micrel MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility ...

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