My Inquiry
My Account
Monolithic Power Systems Inc. MP3302DD-LF-P
- Part No.:
- MP3302DD-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 8-TFDFN Exposed Pad
- Datasheet:
-
MP3302DD-LF-P.pdf
- Description:
- IC LED DRVR RGLTR SGL WR 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,010
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP3302DD-LF-P from Monolithic Power Systems is a 40V, 1.3A single-cell step-up white LED driver with fixed-frequency current-mode control, 200mV feedback reference, and single-wire analog/PWM dimming. It drives up to 10 series WLEDs from 2.5–6V input and integrates a 0.5Ω internal MOSFET switch for compact LCD backlighting in handheld devices.
For engineers reviewing the MP3302DD-LF-P datasheet, MP3302DD-LF-P pinout, MP3302DD-LF-P application, or MP3302DD-LF-P equivalent, this device supports precise LED current regulation via external sense resistor, open-load shutdown at 42V, thermal/UVLO protection, and dual dimming modes using only the EN pin-critical for space-constrained portable display designs.
Technical Context
The MP3302DD-LF-P implements a constant-frequency (1.0–1.5MHz typ), peak-current-mode boost converter architecture with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its error amplifier compares FB voltage against a trimmed 200mV reference to regulate LED current.
Dimming is implemented through EN pin voltage: DC levels between 0.7V–1.4V linearly scale FB reference from 0–200mV for analog dimming; 200Hz–1kHz square waves enable PWM dimming. Open-circuit protection triggers shutdown when SW exceeds 42V, requiring power-cycle recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 6V - Supports single Li-ion battery operation without pre-regulation. |
| Output Voltage Capability | Up to 40V - Sufficient for 10-series white LEDs (~3.3V each) with margin. |
| Switching Frequency | 1.3MHz typical - Enables use of small 4.7µH inductors and low-ESR ceramic capacitors. |
| Feedback Reference Voltage | 200mV ±15mV - Minimizes I²R loss in current-sense resistor, improving efficiency. |
| Internal MOSFET RDS(on) | 0.5Ω - Reduces conduction loss and eliminates need for external high-side switch. |
| Thermal Shutdown Threshold | 150°C - Protects die during sustained overload or poor PCB thermal design. |
| Open-Load Shutdown Voltage | 42V ±2V - Prevents destructive overvoltage during LED string failure. |
Pinout & Package
MP3302DD-LF-P is housed in an RoHS-compliant 8-pin QFN package (2mm × 3mm) with exposed thermal pad connected to GND. The package enables high power density and efficient heat dissipation in thin-profile portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | GND / Exposed Pad | Power and signal ground reference; exposed pad must be soldered to PCB GND plane for thermal management and noise reduction. |
| 2 | IN | Main input supply pin (2.5–6V); requires local 10µF ceramic bypass capacitor to suppress switching noise. |
| 4 | EN | Multi-function pin: logic-level ON/OFF control (0.4V/0.6V thresholds) and analog/PWM dimming interface. |
| 6 | FB | Current-sense feedback input; regulates LED current by maintaining 200mV across external sense resistor. |
| 7 | SW | Drain of internal 0.5Ω MOSFET; connects to boost inductor and output rectifier; swings from GND to ≤36V. |
| 8 | GND | Dedicated signal ground pin - ties to same net as pins 1 and 5 for stable reference. |
Key Features
| Feature | Design Value |
|---|---|
| Single-Wire Dimming | EN pin supports both analog (0.7–1.4V DC) and PWM (200Hz–1kHz) dimming without extra control lines. |
| Integrated 1.3A Switch | 0.5Ω RDS(on) MOSFET eliminates external switch, reducing BOM count and layout area. |
| Low 200mV Feedback | Minimizes power loss in current-sense resistor, enabling high-efficiency operation (>87%) at full load. |
| Open-Load Protection | Shuts down SW output if VSW exceeds 42V, preventing damage during LED string open-circuit failure. |
| Thermal + UVLO Protection | 150°C thermal shutdown and 2.45V UVLO with 92mV hysteresis ensure robust operation under fault conditions. |
Applications
| Handheld LCD Backlighting | Digital Still Camera Display |
|---|---|
Use Scenario: Driving 9 parallel strings of 3-series white LEDs in a 5"–7" LCD panel powered by a single Li-ion cell (3.3–6V). IC Role / Device Role / Timing Role: Step-up DC-DC controller regulating constant LED current via FB pin; EN pin provides system-level brightness control. Use Value: Delivers stable 180mA total current with >85% efficiency across input range, minimizing battery drain and thermal load. | Use Scenario: Backlighting high-resolution rear LCD in compact digital still cameras with tight board space and thermal constraints. IC Role / Device Role / Timing Role: High-frequency (1.3MHz) boost driver enabling miniature 4.7µH inductor and low-profile 0.47µF output capacitor. Use Value: Achieves fast startup and minimal EMI due to fixed-frequency operation and integrated soft-start, supporting instant-on user experience. |
| PDAs & Portable Terminals | Small Industrial HMI Displays |
Use Scenario: Powering multi-string WLED arrays in ruggedized PDAs operating across wide temperature (-40°C to +85°C) and input voltage ranges. IC Role / Device Role / Timing Role: Fault-tolerant LED driver with UVLO, thermal shutdown, and open-load protection ensuring reliable operation in unattended field use. Use Value: Eliminates need for external protection circuitry while maintaining consistent brightness despite battery voltage sag or ambient temperature variation. | Use Scenario: Backlighting 3.5"–5" monochrome or color TFT displays in industrial HMIs where long-term supply continuity and RoHS compliance are mandatory. IC Role / Device Role / Timing Role: RoHS-compliant QFN8 (MP3302DD-LF-P) variant providing drop-in replacement capability and traceable sourcing for production programs. Use Value: Exposed thermal pad and 80°C/W θJA support passive cooling in sealed enclosures, avoiding fan-based thermal solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED boost driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RT9397BZSP | Fixed 1.2MHz frequency, 200mV FB, but no integrated MOSFET (external switch required); max 40V output. | Requires external 1.3A MOSFET and gate driver, increasing BOM and layout complexity. | Select when higher thermal flexibility or discrete switch optimization is needed. |
| TPS61165DRVR | 1.2MHz, 200mV FB, integrated 1.5A switch, but only supports 28V max output and lacks open-load shutdown. | Limited to ≤8-series WLEDs; no automatic response to LED string failure. | Select for lower-voltage, cost-sensitive consumer displays where open-load risk is mitigated externally. |
Compared with RT9397BZSP and TPS61165DRVR, MP3302DD-LF-P uniquely combines 40V output capability, integrated 0.5Ω MOSFET, and 42V open-load shutdown in a 2×3mm QFN-enabling simpler, more robust, and higher-density backlight designs for portable equipment.
Availability
MP3302DD-LF-P is available at Aetrix Electronics and suitable for handheld LCD panels, digital camera displays, and industrial HMI backlights requiring stable component supply, RoHS compliance, and long-lifecycle availability.
Supply support for MP3302DD-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 drivers, and motor control.
The MP3302 product line targets portable display backlighting, delivering high-efficiency, small-footprint, and fault-resilient LED driving solutions for battery-powered consumer and industrial devices.
FAQ
What input voltage range does MP3302DD-LF-P support?
The MP3302DD-LF-P operates from 2.5V to 6V input, optimized for single-cell Li-ion or Li-polymer batteries. Its 2.45V UVLO threshold with 92mV hysteresis ensures reliable startup as battery voltage declines, and it maintains regulation even at minimum input under full load.
How is LED current set and adjusted?
LED current is set by an external sense resistor (RSENSE) between FB and GND, calculated as ILED = 200mV / RSENSE. Dimming is achieved by applying 0.7–1.4V DC to EN for analog control or a 200Hz–1kHz square wave for PWM, both scaling the FB reference proportionally.
Does MP3302DD-LF-P require an external Schottky diode?
Yes - the MP3302DD-LF-P uses external asynchronous rectification. A Schottky diode such as B0540 (40V, 500mA) is recommended for low forward voltage and fast recovery, placed between SW and output capacitor to complete the boost power path.
What thermal performance can be expected in the QFN8 package?
In the 2mm × 3mm QFN8 package, MP3302DD-LF-P has θJA = 80°C/W and θJC = 16°C/W when the exposed pad is properly soldered to a ≥1cm² GND copper area. At 1.3A load and 5V input, junction temperature rise remains within safe limits (<100°C) with standard 4-layer PCB layout.
How does open-load protection work and what happens after shutdown?
When SW voltage exceeds 42V (indicating open LED string), the MP3302DD-LF-P disables switching and holds SW low. Recovery requires cycling IN supply voltage - no automatic restart - preventing repeated stress on components during persistent fault conditions.
Can MP3302DD-LF-P drive more than 10 series white LEDs?
No - the absolute maximum SW voltage is 44V, and typical white LED forward voltage is ~3.3V. Driving 11-series LEDs would exceed 36.3V nominal, leaving insufficient margin for ripple and tolerance. The datasheet specifies "up to 10 series" based on 40V output rating and safety margin.
MP3302DD-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-TFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- 36V
- Current - Output / Channel:
- 1.33A (Switch)
- Frequency:
- 1.3MHz
- Dimming:
- Single-Wire
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-QFN (2x3)
MP3302DD-LF-P FAQ
1.How can I place an order for MP3302DD-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP3302DD-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 MP3302DD-LF-P reliable?
The price and inventory of MP3302DD-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 MP3302DD-LF-P is usually 5 days.
3.What payment methods are accepted for MP3302DD-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3302DD-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP3302DD-LF-P?
MP3302DD-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP3302DD-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 MP3302DD-LF-P?
For technical support, including MP3302DD-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3302DD-LF-P requirements.
6.How does Aetrix verify that MP3302DD-LF-P is sourced from the original manufacturer or authorized distributors?
All MP3302DD-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 MP3302DD-LF-P meets industry standards.
7.What is the process for return or replacement of MP3302DD-LF-P?
All MP3302DD-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP3302DD-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 MP3302DD-LF-P part is unused and in its original packaging.
Return procedure for MP3302DD-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP3302DD-LF-P Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
