MP3801 MPS | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 7

Technical content

MP3801 Rev. 1.0 www.MonolithicPower.com 1 1/25/2010 MPS Proprietary Information. Unaut horized 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 VDD VA VB CS LX RSW_OSC REL_OSC GND EL LAMP BAS21 VIN COUT 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. Unaut horized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. PACKAGE REFERENCE VDD RSW_OSC REL_OSC GND V A VB CS LX 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) Recommended Operating Conditions (2) Thermal Resistance (3) θJA θJC 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

VIN = VDD = 3.0V, REL=1.7MΩ, RSW=510KΩ, TA = +25°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units On Resistance of Switching Transistor RDS(ON) I SW = 100mA, VCS = 95V 9 Ω Output Voltage Regulation V CS 90 95 100 V Peak to Peak Output Voltage V A – VB 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, VB Open, VEN = VIN 92 A Input Current Including Inductor Current IIN A 2kΩ resistor is series with a 10nF capacitor connected between VA and VB 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, VCS, and SW nodes.

MP3801 – 190VPP HIGH VOLTAGE EL LAMP DRIVER MP3801 Rev. 1.0 www.MonolithicPower.com 3 1/25/2010 MPS Proprietary Information. Unaut horized 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, fEL= ELR 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.

MP3801 – 190VPP HIGH VOLTAGE EL LAMP DRIVER MP3801 Rev. 1.0 www.MonolithicPower.com 4 1/25/2010 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS Input current vs. Input Voltage 2ms/div. 1ms/div. 1ms/div. 2ms/div. 2ms/div. 2ms/div. Lamp Frequency vs. Input Voltage 260 265 270 275 280 285 290 V IN(V) V IN(V) LAMP FREQUENCY (HZ) INPUT CURRENT (mA) fsw vs. Rsw fSW (kHz) VOUT 20V/div VA 50V/div VB 50V/div VAB 100V/div VOUT 20V/div VA 50V/div VB 50V/div VOUT 20V/div VA 50V/div VB 50V/div VOUT 20V/div VA 50V/div VB 50V/div VAB 100V/div VOUT 20V/div VA 50V/div VB 50V/div VAB 100V/div VOUT 20V/div VA 50V/div VB 50V/div VAB 100V/div 100 150 200 250 300 350 400 450 500 550 600 650

MP3801 – 190VPP HIGH VOLTAGE EL LAMP DRIVER MP3801 Rev. 1.0 www.MonolithicPower.com 5 1/25/2010 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) 1ms/div. 1ms/div. 1ms/div. 1ms/div. 1ms/div. VOUT 20V/div VA 50V/div VB 50V/div VOUT 20V/div VA 50V/div VB 50V/div VOUT 20V/div VA 50V/div VB 50V/div VOUT 20V/div VA 50V/div VB 50V/div VOUT 20V/div VA 50V/div VB 50V/div 1ms/div. VOUT 20V/div VA 50V/div VB 50V/div

MP3801 – 190VPP HIGH VOLTAGE EL LAMP DRIVER MP3801 Rev. 1.0 www.MonolithicPower.com 6 1/25/2010 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. BLOCK DIAGRAM

2 Switch

RSW_OSC GND RSWRELCIN EL OSC EL Lamp EL Driver Ref REL_OSC VB VA CS COUT D1L1 LX VIN Figure 1—Functional Block Diagram

MP3801 – 190VPP HIGH VOLTAGE EL LAMP DRIVER NOTICE: The information in this document is subject to change wi thout notice. Please contact M PS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights ar e not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP3801 Rev. 1.0 www.MonolithicPower.com 7 1/25/2010 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved.

PACKAGE INFORMATION

NOTE: 1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS IN MILLIMETERS. 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSION OR GATE BURR. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.004" INCHES MAX. 5) PIN 1 IDENTIFICATION HAS HALF OR FULL CIRCLE OPTION. 6) DRAWING MEETS JEDEC MO-187, VARIATION AA-T. 7) DRAWING IS NOT TO SCALE. 0.030(0.75) 0.002(0.05) 0.006(0.15) FRONT VIEW SEATING PLANE PIN 1 ID (NOTE 5) 0.114(2.90) 0.122(3.10) 0.187(4.75) 0.199(5.05) 1 4 0.010(0.25) 0.114(2.90) 0.122(3.10) TOP VIEW 0.004(0.10) 0.008(0.20) SIDE VIEW GAUGE PLANE 0.010(0.25) 0.016(0.40) 0.026(0.65) 0o-6o RECOMMENDED LAND PATTERN 0.100(2.54) 0.040(1.00) Exposed Pad BOTTOM VIEW 0.087(2.20) 0.099(2.50) 0.062(1.58) 0.074(1.88)