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Monolithic Power Systems Inc. MP3301GJ-P
- Part No.:
- MP3301GJ-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MP3301GJ-P.pdf
- Description:
- IC LED DRV RGLTR PWM 1A TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,097
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Product details
Overview
MP3301GJ-P from Monolithic Power Systems is a fixed-frequency, current-mode boost LED driver IC designed to regulate up to 10 white LEDs in series from a 2.5V–6V input. It integrates a 700mA MOSFET switch, operates at 1.3MHz, delivers 200mV feedback voltage for low-loss current sensing, and includes open-load shutdown, UVLO, thermal shutdown, and internal current limiting.
For engineers reviewing the MP3301GJ-P datasheet, MP3301GJ-P pinout, MP3301GJ-P application, or MP3301GJ-P equivalent, key selection criteria include its TSOT23-5 footprint, analog/PWM dimming support via EN pin, 42V open-circuit protection threshold, and suitability for space-constrained portable backlighting with strict efficiency and thermal constraints.
Technical Context
The MP3301GJ-P implements a peak-current-mode, constant-frequency boost regulator architecture with an internal 700mA/0.5Ω N-channel MOSFET switch and 1.3MHz oscillator. Its 200mV FB reference minimizes I²R loss across the external sense resistor, while the EN pin serves dual functions: ON/OFF control (0.4V/0.6V thresholds) and analog dimming (0.7V–1.4V linearly scales FB from 0–200mV).
Open-load protection triggers shutdown when output exceeds 42V, preventing uncontrolled voltage rise during LED string failure. Thermal shutdown activates at 150°C, and under-voltage lockout engages below 2.45V rising VIN, ensuring stable operation across single-cell Li-ion discharge profiles (2.7V–4.2V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.3MHz fixed - enables compact magnetics and reduces EMI filtering burden in portable designs. |
| LED Current Regulation | 200mV FB voltage - sets LED current via external resistor (e.g., 10Ω = 20mA), minimizing power loss and heat generation. |
| Input Voltage Range | 2.5V to 6V - supports full discharge curve of single-cell Li-ion batteries without external LDO pre-regulation. |
| Output Over-Voltage Threshold | 42V - shuts down SW when open-circuit condition detected, protecting downstream components and PCB traces. |
| Thermal Shutdown | 150°C junction temperature - halts switching until die cools, preventing permanent damage during sustained overload or poor heatsinking. |
| Enable Pin Dimming Range | 0.7V–1.4V DC - provides linear analog dimming control; PWM dimming supported with ≥1.5V amplitude, 200Hz–1kHz. |
| Maximum Duty Cycle | 92% - allows high step-up ratios (e.g., 3.8V IN → >36V OUT) while maintaining stability with minimal ripple. |
Pinout & Package
MP3301GJ-P is housed in a thermally enhanced 5-pin TSOT23 package (2.9mm × 1.6mm × 0.85mm), with exposed pad connected to GND for improved thermal dissipation (θJA = 220°C/W, θJC = 110°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SW | Power switch drain node | Connects to inductor and Schottky diode anode; swings from GND to up to 36V; carries peak inductor current. |
| 2 - GND | Power and signal ground reference | Must connect exposed thermal pad to solid GND plane; critical for thermal performance and noise immunity. |
| 3 - FB | Current-sense feedback input | Regulates voltage across external Rsense to 200mV; connects to cathode of LED string to close current loop. |
| 4 - EN | Enable/dimming control input | Dual-function: logic-level ON/OFF (0.4V/0.6V) and analog dimming (0.7V–1.4V); accepts PWM up to 1kHz directly. |
| 5 - IN | Main power supply input | Accepts 2.5V–6V; requires local 4.7µF ceramic bypass capacitor; sensitive to input ripple due to high-frequency switching. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 700mA MOSFET switch | Eliminates external high-side switch; reduces BOM count and layout area while maintaining ≤0.5Ω RDS(on). |
| 1.3MHz fixed-frequency operation | Enables use of sub-5mm inductors and <1µF output capacitors, optimizing board space in smartphones and DSCs. |
| 200mV feedback reference voltage | Lowers Rsense power dissipation by 80% vs. typical 1V references, improving thermal margin at 20mA–60mA LED currents. |
| Open-load shutdown with 42V threshold | Prevents destructive overvoltage during single-LED open failure; latches off until power cycle, enhancing system reliability. |
| Combined analog + PWM dimming | EN pin supports seamless transition between DC voltage-controlled brightness and high-contrast PWM dimming without extra ICs. |
Applications
| Smartphone Backlighting | Digital Still Camera Flash/Backlight |
|---|---|
|
Use Scenario: Driving 6–8 white LEDs in series for main LCD backlight in slim smartphone form factors with 3.0–4.2V battery input. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED string current to ±3% accuracy via 200mV FB loop. Use Value: Enables uniform brightness across display while maintaining >85% efficiency at 20mA, reducing thermal load on OLED/LCD stack. |
Use Scenario: Powering dual-mode LED array (backlight + flash) in compact digital cameras with variable battery voltage (3.2–4.3V). IC Role / Device Role / Timing Role: Provides analog-dimming-controlled steady backlight and fast PWM-triggered high-current flash mode via EN pin. Use Value: Eliminates need for separate flash driver; 1.3MHz switching avoids audible noise during video recording and ensures fast transient response. |
| Small LCD Panel Lighting | Portable Medical Display Illumination |
|
Use Scenario: Illuminating 4–10 white LEDs in series for industrial handhelds, barcode scanners, or POS terminals with 2.7–5.5V input range. IC Role / Device Role / Timing Role: Fixed-frequency boost converter with UVLO (2.45V) and thermal shutdown (150°C) for robust operation in wide-temperature environments. Use Value: Maintains consistent luminance across battery discharge and ambient temperatures; TSOT23-5 footprint fits tight board real estate. |
Use Scenario: Providing flicker-free, dimmable backlight for battery-powered medical monitors requiring Class II safety and low EMI. IC Role / Device Role / Timing Role: LED current controller with open-load protection (42V) and soft-start to prevent inrush current during power-on reset sequences. Use Value: Ensures patient-facing displays remain compliant with IEC 60601-1 leakage and EMI limits without added filtering components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED boost driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RT9397BZSP | 1.2MHz switching, 250mV FB, no integrated MOSFET (external switch required), 600mA current limit | Requires external high-side MOSFET and gate driver; larger solution size; lower integration | Select when higher thermal margin is needed via discrete FET or when 250mV FB better matches existing Rsense values. |
| TPS61165DRVR | 1.2MHz, 200mV FB, 700mA switch, but only supports up to 8 LEDs; lacks open-load shutdown above 36V | No overvoltage latch-off above 36V; less robust in open-LED failure scenarios | Choose for cost-sensitive 8-LED designs where 42V OVP is not required and TI supply chain preference applies. |
Compared with RT9397BZSP and TPS61165DRVR, MP3301GJ-P offers superior integration (internal 700mA MOSFET), tighter open-load protection (42V vs. none or 36V), and identical 200mV FB for direct Rsense compatibility-making it optimal for compact, fail-safe white LED backlighting.
Availability
MP3301GJ-P is available at Aetrix Electronics and suitable for smartphone backlighting, digital still camera illumination, and small LCD panel lighting requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for MP3301GJ-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP3301 belongs to MPS's White LED Driver product line, engineered specifically for efficient, compact, and reliable backlighting in battery-powered portable devices with stringent size, efficiency, and safety requirements.
FAQ
What is the maximum number of white LEDs the MP3301GJ-P can drive in series?
The MP3301GJ-P is rated to drive up to 10 white LEDs in series, assuming typical forward voltage of 3.2V per LED and maximum output voltage capability of 36V (limited by 42V open-load shutdown). At 3.2V × 10 = 32V, the device operates within safe margin while delivering regulated 20mA current using a 10Ω sense resistor.
Does MP3301GJ-P support both analog and PWM dimming simultaneously?
No-it supports either analog dimming (via 0.7V–1.4V DC on EN pin) or PWM dimming (200Hz–1kHz square wave ≥1.5V on EN), but not simultaneous operation. The EN pin's function is mutually exclusive: DC voltage sets average FB level, while PWM toggles ON/OFF state; mixing modes causes unstable regulation.
What is the recommended inductor value and type for MP3301GJ-P in an 8-LED application?
MPS recommends a 4.7µH shielded power inductor with ≤0.1Ω DCR and 500mA+ saturation current (e.g., Coilcraft XAL4020-472MEB). This value balances peak current ripple (<30%), efficiency (>87%), and physical size for TSOT23-5 layouts; ferrite core minimizes EMI coupling into adjacent analog circuits.
How does the MP3301GJ-P handle thermal overload conditions?
When junction temperature reaches 150°C, the MP3301GJ-P disables the internal MOSFET and halts switching until the die cools below the hysteresis threshold (~135°C). During shutdown, quiescent current drops to 10µA, and the device resumes normal operation automatically-no external reset required.
Can MP3301GJ-P operate from a 2.5V input with 10 LEDs in series?
Yes, but only with auxiliary bias circuitry (as shown in Figure 7 of the datasheet) to improve MOSFET gate drive at low VIN. Without it, minimum input is 2.7V for 10-LED strings; the bias network boosts gate voltage to maintain low RDS(on) and sustain >92% duty cycle needed for ~32V output.
Is the TSOT23-5 package of MP3301GJ-P lead-free and RoHS compliant?
Yes, MP3301GJ-P is fully lead-free and complies with the EU RoHS directive (2011/65/EU). All MPS products undergo rigorous quality assurance per IPC/JEDEC standards, and green status documentation is available on the official MPS website under Quality Assurance resources.
MP3301GJ-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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:
- 1A (Switch)
- Frequency:
- 1.3MHz
- Dimming:
- Analog, PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MP3301GJ-P FAQ
1.How can I place an order for MP3301GJ-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP3301GJ-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 MP3301GJ-P reliable?
The price and inventory of MP3301GJ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP3301GJ-P is usually 5 days.
3.What payment methods are accepted for MP3301GJ-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3301GJ-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP3301GJ-P?
MP3301GJ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP3301GJ-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 MP3301GJ-P?
For technical support, including MP3301GJ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3301GJ-P requirements.
6.How does Aetrix verify that MP3301GJ-P is sourced from the original manufacturer or authorized distributors?
All MP3301GJ-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 MP3301GJ-P meets industry standards.
7.What is the process for return or replacement of MP3301GJ-P?
All MP3301GJ-P units undergo pre-shipment inspection (PSI). If there is an issue with MP3301GJ-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 MP3301GJ-P part is unused and in its original packaging.
Return procedure for MP3301GJ-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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