My Inquiry
My Account
Monolithic Power Systems Inc. MP3307GJ-P
- Part No.:
- MP3307GJ-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
MP3307GJ-P.pdf
- Description:
- IC LED DRVR RGLTR PWM TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,476
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP3307GJ-P from Monolithic Power Systems is a non-synchronous white LED step-up driver in TSOT23-8 package, operating from 2.7V–5.5V input with 24V open-load protection, 200mV ±1% feedback reference, and programmable switching frequency up to 2.2MHz. It supports dual dimming (analog via PWMH, PWM via EN/PWML) and delivers precise current regulation for multi-string WLED backlighting in compact displays.
For engineers reviewing the MP3307GJ-P datasheet, MP3307GJ-P pinout, MP3307GJ-P application, or MP3307GJ-P equivalent, key selection criteria include its 2.2MHz FSW programmability, 24V OVP threshold, cycle-by-cycle over-current limit (1.6A), thermal shutdown at 150°C, and dual-dimming interface compatibility with display timing controllers.
Technical Context
The MP3307GJ-P uses peak-current-mode control with internal ramp compensation to stabilize operation above 50% duty cycle. Its error amplifier compares FB voltage against a trimmed 200mV reference, driving a low-side N-channel MOSFET (RDSON = 0.3–0.5Ω) to regulate LED current through an external sense resistor.
Protection logic integrates independent comparators for OVP (24V threshold with 2V hysteresis), UVLO (2.5V rising, 200mV hysteresis), and thermal shutdown (150°C trip, 25°C hysteresis), all triggering immediate shutdown without latch. Dimming is decoupled: EN/PWML accepts 100Hz–2kHz PWM for digital brightness control, while PWMH accepts >20kHz signals for analog dimming via internal RC filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion and USB-powered systems without LDO pre-regulation. |
| Feedback Reference Voltage | 200mV ±1% - enables high-accuracy LED current setting with minimal sense resistor power loss (e.g., 20mA @ 10Ω). |
| Switching Frequency | Programmable up to 2.2MHz - allows small external inductors (e.g., 3.3µH) and avoids AM radio band interference. |
| OVP Threshold | 24V (22.5–25.5V range) - protects against LED string open-circuit failure in 3s–6s configurations. |
| Cycle-by-Cycle Current Limit | 1.6A - prevents MOSFET overstress during startup or shorted LED conditions. |
| Thermal Shutdown | 150°C with 25°C hysteresis - ensures safe operation under sustained high-power backlight loads in confined PCB areas. |
| Quiescent Current | 440µA - minimizes standby power draw in always-on display subsystems. |
Pinout & Package
MP3307GJ-P is housed in a thermally enhanced TSOT23-8 package (0.65mm pitch, 2.9mm × 1.6mm footprint), optimized for space-constrained display backlight designs with exposed pad for improved heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Power switch node | Drain of internal low-side MOSFET; connects directly to inductor and VIN bypass capacitor - forms high-di/dt switching loop requiring tight layout. |
| 2 OVP | Over-voltage sensing input | Monitors output voltage via resistive divider; triggers shutdown when VOUT ≥24V - must be decoupled with ≤10pF capacitor to suppress noise false trips. |
| 3 GND | Power and signal ground | Common return for FB, FREQ, EN/PWML, PWMH, and internal circuitry - requires low-impedance connection to thermal pad and input/output capacitors. |
| 4 FB | Current-sense feedback | Regulates voltage across external sense resistor to 200mV - determines LED current (ILED = 0.2V / RSENSE); sensitive to PCB trace noise. |
| 5 FREQ | Frequency programming | Connects to GND via resistor (e.g., 51kΩ → 2.22MHz); floating state disables switching - no internal pull-down. |
| 6 EN/PWML | Enable / PWM dimming input | Active-high enable; accepts 100Hz–2kHz PWM for digital dimming; low pulse >20ms forces shutdown - serves dual function with no mode select pin. |
| 7 PWMH | Analog dimming input | Accepts >20kHz PWM for analog dimming via internal RC filter; duty cycle directly scales ILED - isolated from EN logic to prevent conflict. |
| 8 VIN | Input supply | 2.7V–5.5V power input; powers internal logic and gate driver - requires local 4.7µF ceramic bypass within 2mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent dimming interfaces | EN/PWML (100Hz–2kHz) and PWMH (>20kHz) allow simultaneous hardware/software brightness control without external logic or muxing. |
| 24V open-string protection | Hardware-based OVP comparator with 2V hysteresis prevents uncontrolled output voltage rise during LED string disconnection - no software or external components required. |
| 200mV ±1% reference accuracy | Enables <±2% LED current tolerance across temperature and line variation using standard 1% sense resistors - eliminates need for calibration. |
| Programmable 300kHz–2.2MHz fSW | Resistor-programmed oscillator allows EMI optimization and inductor size reduction while maintaining efficiency >85% at 2.2MHz in typical 3s×4p LED configs. |
| Integrated cycle-by-cycle current limit | 1.6A hard limit protects internal MOSFET during fault conditions without external current-sense amplifiers or fast comparators. |
Applications
| Automotive Infotainment Displays | Tablet Backlight Systems |
|---|---|
|
Use Scenario: Driving 3-series × 4-parallel white LED strings in 7-inch LCD dashboards with ambient temperature ranging from –40°C to +105°C. IC Role / Device Role / Timing Role: Primary WLED current regulator with integrated OVP and thermal shutdown - replaces discrete boost controller + protection ICs. Use Value: 24V OVP prevents damage during LED string breakage in vibration-prone environments; 150°C thermal shutdown ensures reliability under sealed enclosure conditions. |
Use Scenario: Powering edge-lit LED arrays in 10.1-inch tablets with battery input (3.0–4.2V) and dynamic brightness scaling from 5% to 100%. IC Role / Device Role / Timing Role: High-frequency step-up LED driver supporting both PWM and analog dimming modes - synchronized to display controller's frame rate. Use Value: 2.2MHz programmable fSW enables use of 3.3µH inductors, reducing board area by 40% vs. 1MHz solutions; dual dimming inputs simplify firmware integration. |
| Industrial HMI Panels | Portable Medical Display Devices |
|
Use Scenario: Backlighting ruggedized 5.7-inch VGA displays in factory-floor HMIs where ESD immunity and long-term supply continuity are critical. IC Role / Device Role / Timing Role: Single-chip LED driver with UVLO (2.5V), OCP, and thermal protection - operates across wide industrial temperature range (–40°C to +125°C). Use Value: 200mV ±1% reference ensures consistent luminance across temperature drift; TSOT23-8 package supports automated optical inspection (AOI) and reflow compatibility. |
Use Scenario: Illuminating diagnostic-grade OLED/LCD modules in handheld ultrasound and patient monitors requiring flicker-free dimming down to 0.1cd/m². IC Role / Device Role / Timing Role: Precision current source with >20kHz analog dimming capability - eliminates visible PWM artifacts during low-brightness imaging. Use Value: PWMH input with internal RC filter enables smooth 10-bit+ dimming resolution without external DAC or op-amps; RoHS/lead-free compliance meets medical regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED step-up driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RT8532GSP | Fixed 1.2MHz fSW, 28V OVP, 250mV VREF, no analog dimming input | Lacks dedicated PWMH pin; relies on external RC network for analog dimming - increases BOM count and layout complexity | Choose when fixed frequency simplifies EMI filtering and higher OVP margin (28V) is needed for 7s LED strings. |
| LM3409QMYX/NOPB | Adjustable current limit (0.5–2.5A), 40V OVP, external MOSFET drive, no integrated switch | Requires external high-side N-MOSFET and gate driver - adds cost, footprint, and thermal management overhead | Prefer for high-current (>1A) or high-output-voltage (>30V) applications where MP3307GJ-P's 1.6A limit or 24V OVP is insufficient. |
Compared with RT8532GSP and LM3409QMYX/NOPB, MP3307GJ-P offers integrated switching, dual native dimming inputs, and tighter VREF accuracy - delivering lower system cost and smaller footprint for mid-power (≤500mA) display backlighting below 24V.
Availability
MP3307GJ-P is available at Aetrix Electronics and suitable for automotive infotainment displays, tablet backlight systems, and industrial HMI panels requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP3307GJ-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 MP3307 product line targets compact, high-efficiency LED backlight drivers for portable and automotive displays - emphasizing integration, thermal robustness, and dual-dimming flexibility without external active components.
FAQ
What is the minimum recommended inductor value for MP3307GJ-P at 2.2MHz?
The minimum inductor value depends on input/output voltage, LED current, and efficiency. For a typical 3.6V input → 12V output, 200mA load, and 88% efficiency, Equation (4) yields ≥2.1µH. MPS recommends 3.3µH (e.g., Coilcraft XAL5030-332MEB) to ensure continuous conduction mode and margin against saturation at 1.6A peak current.
Can EN/PWML and PWMH be driven simultaneously without conflict?
Yes - EN/PWML controls enable/disable and digital dimming, while PWMH handles analog dimming via internal RC filtering. The IC internally prioritizes EN/PWML for shutdown (≥20ms low pulse), but PWMH remains active during normal operation. No external arbitration is needed.
How does the 24V OVP protect against transient overvoltage events?
The OVP circuit continuously monitors VOUT via the OVP pin using a resistive divider. When the divided voltage exceeds the 24V threshold (22.5–25.5V), the internal comparator disables the power switch immediately. Recovery occurs only after VOUT drops below the hysteresis point (22V), preventing oscillation during marginal faults.
Is the 200mV feedback reference internally trimmed across temperature?
Yes - the 200mV reference is laser-trimmed at room temperature and specified to maintain ±1% accuracy from –40°C to +125°C. This eliminates need for external calibration and ensures LED current stability across automotive and industrial temperature ranges.
What is the maximum allowable voltage on the FREQ pin?
The FREQ pin is rated for –0.3V to +6V per Absolute Maximum Ratings. However, it must be connected to GND via a resistor (30kΩ–200kΩ) for proper oscillator operation. Leaving FREQ floating disables switching; applying voltage >0.3V may cause undefined frequency behavior or increased quiescent current.
Does MP3307GJ-P support spread-spectrum frequency modulation?
No - the MP3307GJ-P uses a fixed-frequency, resistor-programmed oscillator without spread-spectrum capability. EMI reduction is achieved via programmable high-frequency operation (up to 2.2MHz), which pushes noise energy beyond sensitive bands and allows smaller passive filters.
How does thermal shutdown interact with the soft-start sequence?
Thermal shutdown overrides soft-start. If die temperature exceeds 150°C during startup, the IC halts soft-start progression and enters shutdown. After cooling below 125°C (150°C – 25°C hysteresis), it restarts soft-start from the beginning - ensuring safe re-entry without current surge.
MP3307GJ-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1.6A
- Frequency:
- 2.22MHz
- Dimming:
- Analog, PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
MP3307GJ-P FAQ
1.How can I place an order for MP3307GJ-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP3307GJ-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 MP3307GJ-P reliable?
The price and inventory of MP3307GJ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP3307GJ-P is usually 5 days.
3.What payment methods are accepted for MP3307GJ-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3307GJ-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP3307GJ-P?
MP3307GJ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP3307GJ-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 MP3307GJ-P?
For technical support, including MP3307GJ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3307GJ-P requirements.
6.How does Aetrix verify that MP3307GJ-P is sourced from the original manufacturer or authorized distributors?
All MP3307GJ-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 MP3307GJ-P meets industry standards.
7.What is the process for return or replacement of MP3307GJ-P?
All MP3307GJ-P units undergo pre-shipment inspection (PSI). If there is an issue with MP3307GJ-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 MP3307GJ-P part is unused and in its original packaging.
Return procedure for MP3307GJ-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP3307GJ-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
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
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…
