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MP3801DH-LF-P

P1-P3P4-P6P7-P7
MP3801
190Vpp High Voltage
EL Lamp Driver
MP3801 Rev. 1.0 www.MonolithicPower.com 1
1/25/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP3801 is a high output voltage, DC to AC
converter designed for driving
Electroluminescent (EL) lamps of up to 5 square
inches. The device operates from an input
voltage range of 2.5V to 5.5V, making it suitable
for 1-cell Li-Ion and 2 or 3-cell
alkaline/NiCad/NiMH battery applications. The
device uses a single inductor and a minimum
number of passive components. The MP3801
converts a low-voltage DC input to a ±95V
regulated output voltage that drives the EL lamp.
The MP3801 is comprised of two stages: a boost
stage and a H-bridge lamp driver stage. The
boost stage converts the input voltage up to 95V.
The H-bridge stage alternately switches the 95V
to each terminal of the EL lamp.
The MP3801 has two separate internal
oscillators for the boost and H-bridge stages.
The frequency of each oscillator is set
independently via external resistors. This
flexibility allows the EL lamp circuit to be
optimized for maximum performance. Also, the
IC can be enabled /disabled by connecting these
two resistors to V
DD
/GND.
The MP3801 is available in an 8-pin MSOP
package.
FEATURES
• 2.5V to 5.5V DC Input Voltage
• 190V
PP
Regulated AC Output Waveform
• Single Cell Lithium-Ion Compatible
• 10nA Shutdown Current
• Adjustable EL Lamp Frequency
• Adjustable Converter Frequency
• Available in MSOP-8
• Split Supply Capability
APPLICATIONS
• Portable Multimedia Players
• LCD Backlighting
• PDAs
• Handheld Wireless Communication
• Mobile Phones
• Remote Controls
• Global Positioning Systems (GPS)
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP3801
V
DD
V
A
V
B
C
S
L
X
R
SW_OSC
R
EL_OSC
GND
8
7
6
5
1
2
3
4
EL LAMP
BAS21
V
IN
C
OUT
3.3nF
100V
EN
OFF ON
MP3801 – 190VPP HIGH VOLTAGE EL LAMP DRIVER
MP3801 Rev. 1.0 www.MonolithicPower.com 2
1/25/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
PACKAGE REFERENCE
V
DD
R
SW_OSC
R
EL_OSC
GND
1
2
3
4
8
7
6
5
V
A
V
B
C
S
L
X
TOP VIEW
Part Number* Package Temperature
MP3801DH MSOP8
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP3801DH–Z)
For RoHS Compliant Packaging, add suffix –LF
(eg. MP3801DH–LF–Z)
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage (V
DD
) .................. –0.5V to +6.0V
Output Voltage (V
CS
, V
A
, V
B
)...... –0.5V to +120V
All Other Pins...................... –0.5V to V
DD
+ 0.3V
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature .............–65°C to +150°C
Recommended Operating Conditions
(2)
Supply Voltage ............................... 2.5V to 5.5V
Lamp Drive Frequency (f
EL
) ..........60Hz to 1KHz
Switching Transistor Freq...... 50KHz to 200KHz
Operating Temperature .............–40°C to +85°C
Thermal Resistance (3) θJA θJC
MSOP8 .................................. 150 ..... 65... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
V
IN
= V
DD
= 3.0V, R
EL
=1.7MΩ, R
SW
=510KΩ, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
On Resistance of Switching
Transistor
R
DS(ON)
I
SW
= 100mA, V
CS
= 95V 9 Ω
Output Voltage Regulation V
CS
90 95 100 V
Peak to Peak Output Voltage V
A
– V
B
180 190 200 V
Input Low Voltage (Turn Off) V
EN-L
V
DD
– 0.6 V
Input High Voltage (Turn On) V
EN-H
V
DD
– 0.3 V
Shutdown Current I
SD
V
EN
= 0V 10 nA
Input Supply Current I
VDD
V
A
, V
B
Open, V
EN
= V
IN
92 A
Input Current Including Inductor
Current
I
IN
A 2kΩ resistor is series
with a 10nF capacitor
connected between V
A
and V
B
20 mA
EL Lamp Frequency f
EL
200 240 274 Hz
Switching Transistor Frequency f
SW
85 KHz
Switching Transistor Duty Cycle D 92 %
Note:
4) Shutdown current is defined as the sum of currents going into V
DD
, V
CS
, and SW nodes.
MP3801 – 190VPP HIGH VOLTAGE EL LAMP DRIVER
MP3801 Rev. 1.0 www.MonolithicPower.com 3
1/25/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin # Name Description
1 V
DD
Supply Voltage.
2 R
SW_OSC
Boost Converter Frequency Setting Pin. Refer the frequency setting curve in the typical
performance characteristics.
3 R
EL_OSC
EL Driver Frequency Setting Pin. Roughly, f
EL
=
EL
R
240Hz1.7MΩ
×
4 GND Ground. Connect the exposed pad to this pin.
5 L
X
Boost Converter Switching Pin. This pin connects to the N-Channel MOSFET drain.
6 C
S
Boost Converter Output. Put a 100V, NPO ceramic capacitor at this pin to stone the energy
transferred from the inductor.
7 V
B
Output Voltage B on EL Device.
8 V
A
Output Voltage A on EL Device.
P1-P3P4-P6P7-P7

MP3801DH-LF-P

Mfr. #:
Buy MP3801DH-LF-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
LED Lighting Drivers 200VPP High Voltage EL Lamp Driver
Lifecycle:
New from this manufacturer.
Delivery:
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