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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Lighting, Ballast Controllers

Monolithic Power Systems Inc. MP3802DH-LF-P

Name: MP3802DH-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MP3802DH-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP3802DH-LF-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Lighting, Ballast Controllers

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad

Datasheet:: MP3802DH-LF-P.pdf

Description:: IC EL LAMP DRIVER 200KHZ 8MSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MP3802DH-LF-P from Monolithic Power Systems is a high-voltage DC-to-AC EL lamp driver IC with 240V_PP regulated output, dual independent oscillators (50–200kHz boost, 60Hz–1kHz EL drive), 2.5–5.5V input range, 10nA shutdown current, and MSOP-8 package. It drives up to 5 in² electroluminescent lamps in battery-powered portable devices.

For engineers reviewing the MP3802DH-LF-P datasheet, MP3802DH-LF-P pinout, MP3802DH-LF-P application, or MP3802DH-LF-P equivalent, key selection factors include regulated ±120V AC output capability, split-supply H-bridge topology, external frequency tuning via RSW_OSC/REL_OSC resistors, and low-quiescent-current enable/disable control.

Technical Context

The MP3802DH-LF-P integrates a boost converter stage (with LX switching node and CS output) followed by an H-bridge driver (VA/VB outputs) to generate high-voltage AC for EL lamps. Its two independent internal oscillators allow decoupled optimization of power conversion efficiency and lamp brightness/flicker performance.

Frequency setting is resistor-programmable: RSW_OSC sets boost switching frequency (50–200kHz), while REL_OSC sets EL lamp drive frequency (60Hz–1kHz). The device supports split-supply operation and features a dedicated shutdown path with 10nA leakage when disabled.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.5V to 5.5V - supports single-cell Li-ion or 2–3-cell alkaline/NiMH batteries without external regulation
Output Voltage	±120V (240V_PP) - regulated AC waveform directly drives EL lamps without external transformer
Boost Switching Freq	50kHz to 200kHz - set by RSW_OSC resistor; higher frequencies reduce inductor size but increase switching loss
EL Lamp Drive Freq	60Hz to 1kHz - set by REL_OSC resistor; determines lamp brightness and visual flicker characteristics
Shutdown Current	10nA - enables ultra-low-power off-state in battery-critical portable applications
On-Resistance (R_DS(ON))	9Ω - limits conduction loss in internal H-bridge MOSFETs during high-voltage AC switching
Operating Temp	–40°C to +85°C - qualified for industrial and consumer handheld environments

Pinout & Package

MP3802DH-LF-P is housed in an 8-pin MSOP package with exposed thermal pad (connected to GND). Pin 1 is marked with half-circle or full-circle indicator per JEDEC MO-187 AA-T.

Pin/Terminal	Circuit Role	Design Meaning
1 VDD	Power supply input	2.5–5.5V main supply rail; bypass capacitor required near pin
2 RSW_OSC	Boost oscillator frequency control	Resistor-connected node setting boost switching frequency (50–200kHz)
3 REL_OSC	EL lamp oscillator frequency control	Resistor-connected node setting lamp drive frequency (60Hz–1kHz)
4 GND	Ground reference	System ground; exposed pad must be soldered to PCB ground plane for thermal and EMI performance
5 LX	Boost switch node	Drives external inductor; connects to drain of internal N-MOSFET in boost stage
6 CS	Boost output / energy storage node	Provides ±120V DC to H-bridge; requires 150V NPO ceramic capacitor for stability
7 VB	H-bridge output B	One AC output terminal for EL lamp; alternates polarity with VA under H-bridge control
8 VA	H-bridge output A	Second AC output terminal for EL lamp; complements VB to generate 240V_PP differential waveform

Key Features

Feature	Design Value
Dual independent oscillators	Enables simultaneous optimization of power-stage efficiency (via RSW_OSC) and lamp visual performance (via REL_OSC)
Regulated ±120V output	Maintains constant EL lamp brightness across battery discharge and temperature variation
Split-supply capability	Allows use with asymmetric or floating lamp configurations without external level-shifting circuitry
10nA shutdown current	Extends battery life in always-on portable devices with intermittent display activation
MSOP-8 with exposed pad	Provides compact footprint and enhanced thermal dissipation for high-voltage switching in space-constrained designs

Applications

Portable Multimedia Players

LCD Backlighting

Use Scenario: Driving segmented EL panels for status indicators and decorative lighting in MP3/MP4 players.

IC Role / Device Role / Timing Role: EL lamp driver generating 240V_PP, 250Hz AC output with adjustable frequency to match panel resonance and minimize audible noise.

Use Value: Enables thin, uniform illumination without transformers or bulky inverters-critical for sub-10mm chassis depth.

Use Scenario: Providing edge-lit backlighting for small-format monochrome LCDs in legacy PDAs and diagnostic tools.

IC Role / Device Role / Timing Role: High-voltage AC source with ±120V regulation ensuring consistent luminance across varying battery voltage (3.0–4.2V).

Use Value: Eliminates need for external feedback loop or voltage scaling, reducing BOM count by ≥3 components.

Mobile Phones (Feature Phones)

Remote Controls

Use Scenario: Illuminating keypad and status LEDs in dual-mode (GSM/EDGE) feature phones with 3.7V Li-ion supply.

IC Role / Device Role / Timing Role: Low-quiescent-current (10nA) enable-controlled driver supporting instant-on/off transitions during button press events.

Use Value: Adds backlight functionality with <1µA average system current penalty during standby-preserving >14-day shelf life.

Use Scenario: Powering EL-based backlight for membrane keypads in IR remote controls using two AAA alkaline cells.

IC Role / Device Role / Timing Role: Wide-input (2.5–5.5V) driver maintaining 240V_PP output as battery depletes from 3.0V to 1.8V.

Use Value: Delivers stable brightness over full battery life without manual brightness adjustment or firmware compensation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar EL lamp driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX14521E+T	Higher 300V_PP output; integrated soft-start; no external RSW_OSC tuning	Targeted at larger-area EL panels requiring >5 in² coverage	Select when higher peak voltage or simplified startup sequencing is prioritized over frequency flexibility
LT3466-1	Single-stage boost-only architecture; no integrated H-bridge; requires external AC coupling	Suitable for custom EL drivers where layout control and discrete component selection are critical	Select when design requires independent optimization of boost and AC inversion stages

Compared with MAX14521E+T and LT3466-1, the MP3802DH-LF-P uniquely balances programmable dual-frequency control, integrated H-bridge, and ultra-low shutdown current-making it optimal for compact, battery-sensitive EL lighting where flicker, size, and standby power are co-constrained.

Availability

MP3802DH-LF-P is available at Aetrix Electronics and suitable for portable multimedia players, LCD backlighting, and remote controls requiring stable component supply with RoHS-compliant packaging and full traceability.

Supply support for MP3802DH-LF-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC-DC conversion, LED/EL drivers, and motor control solutions.

The MP3802 belongs to MPS's high-voltage display driver product line, engineered specifically for efficient, compact, and low-power electroluminescent lamp excitation in portable consumer electronics.

FAQ

What is the maximum EL lamp area supported by MP3802DH-LF-P?

The MP3802DH-LF-P is rated for driving electroluminescent lamps up to 5 square inches, as confirmed in the official datasheet's DESCRIPTION section and validated by typical application circuit load capability under 240V_PP and 250Hz conditions.

Can MP3802DH-LF-P operate from a single 1.5V alkaline cell?

No. The MP3802DH-LF-P requires a minimum 2.5V input supply. A single 1.5V alkaline cell falls below this threshold; two alkaline cells (3.0V nominal) meet the 2.5–5.5V operating range and are explicitly cited in the datasheet as supported.

Is the exposed pad on the MSOP-8 package electrically connected?

Yes-the exposed thermal pad is internally connected to GND. The datasheet specifies that the pad "must be connected to GND" for proper thermal performance and EMI suppression, and recommends soldering it to the PCB ground plane.

How does the MP3802DH-LF-P achieve 240V_PP output with only a 5.5V max input?

It uses a two-stage architecture: a boost converter first generates ±120V DC at the CS pin, then an integrated H-bridge (VA/VB) alternately applies those rails to the lamp terminals, producing a 240V_PP AC waveform without external transformers or charge pumps.

Does MP3802DH-LF-P require external MOSFETs for lamp driving?

No. The MP3802DH-LF-P integrates all necessary power switches-including the boost-stage N-MOSFET (driven at LX) and the H-bridge MOSFETs (driving VA/VB). Only one external inductor and a 150V NPO capacitor at CS are required for full operation.

What is the function of the RSW_OSC and REL_OSC pins?

RSW_OSC sets the boost converter switching frequency (50–200kHz) via an external resistor; REL_OSC sets the EL lamp AC drive frequency (60Hz–1kHz). Both pins accept resistor-to-VDD or resistor-to-GND connections to enable/disable or tune respective oscillators independently.

MP3802DH-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: EL Lamp Driver

Frequency:: 50kHz ~ 200kHz

Voltage - Supply:: 2.5V ~ 5.5V

Current - Supply:: 100 µA

Current - Output Source/Sink:: -

Dimming:: No

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MSOP-EP

MP3802DH-LF-P FAQ

1.How can I place an order for MP3802DH-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP3802DH-LF-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MP3802DH-LF-P reliable?

The price and inventory of MP3802DH-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP3802DH-LF-P is usually 5 days.

3.What payment methods are accepted for MP3802DH-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3802DH-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP3802DH-LF-P?

MP3802DH-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP3802DH-LF-P order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MP3802DH-LF-P?

For technical support, including MP3802DH-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3802DH-LF-P requirements.

6.How does Aetrix verify that MP3802DH-LF-P is sourced from the original manufacturer or authorized distributors?

All MP3802DH-LF-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP3802DH-LF-P meets industry standards.

7.What is the process for return or replacement of MP3802DH-LF-P?

All MP3802DH-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP3802DH-LF-P, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MP3802DH-LF-P part is unused and in its original packaging.

Return procedure for MP3802DH-LF-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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