My Inquiry
My Account
Monolithic Power Systems Inc. MP24893DQ-LF-Z
- Part No.:
- MP24893DQ-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
MP24893DQ-LF-Z.pdf
- Description:
- IC LED DRIVER RGLTR PWM 1A 6QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,709
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP24893DQ-LF-Z from Monolithic Power Systems is a hysteretic-controlled step-down white LED driver IC with 6V–36V input range, internal 36V/1A MOSFET, 200mV average feedback voltage, and dual PWM/analog dimming via EN/DIM pin-designed for automotive decorative lighting and emergency signage requiring stable high-brightness LED current regulation.
For engineers reviewing the MP24893DQ-LF-Z datasheet, MP24893DQ-LF-Z pinout, MP24893DQ-LF-Z application, or MP24893DQ-LF-Z equivalent, this page delivers verified package mapping (QFN6-6), confirmed hysteretic control architecture, exact dimming interface behavior (0.3V–2.5V analog / 100Hz–2kHz PWM), thermal shutdown threshold (150°C), and validated alternative part selection guidance.
Technical Context
The MP24893DQ-LF-Z implements a fixed-frequency hysteretic control loop that regulates LED current by sensing voltage across an external high-side resistor (RS), maintaining peak-to-valley reference of 220–240mV / 160–180mV relative to VIN. No external compensation is required due to inherent stability of the hysteretic scheme.
It integrates a 36V-rated power MOSFET with 0.2Ω RDS(on), supports soft-start via EN/DIM pin capacitor (0.2ms/nF delay), and provides independent enable/dimming functionality: logic-level enable threshold (0.2–0.3V), 1000:1 PWM dimming resolution, and analog dimming range from 25% to 200% of full-scale current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6V to 36V - supports 12V/24V automotive and industrial bus rails without pre-regulation |
| Max Output Current | 1A - sufficient to drive 3× high-brightness LEDs in series at typical forward voltage (~3.2V each) |
| Feedback Reference Voltage | 202mV ±30mV - low-sense voltage minimizes I²R loss in current-sense resistor and improves efficiency |
| Dimming Interface | PWM + analog on single EN/DIM pin - enables flexible brightness control without extra ICs or routing complexity |
| Thermal Protection | 150°C junction shutdown with hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
| Package Thermal Resistance | θJA = 50°C/W (QFN6) - enables 2.5W continuous dissipation at +25°C ambient, critical for enclosed LED fixtures |
Pinout & Package
MP24893DQ-LF-Z uses a RoHS-compliant QFN6 (3mm × 3mm, 0.4mm pitch) package with exposed thermal pad. Pin 1 is marked by index area (Option A or B per JEDEC MO-229 VEEA-2); pin 6 is NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch Node | Drain of internal MOSFET - connects to inductor and Schottky diode anode; carries high di/dt switching current |
| 2 (GND) | Power Ground | Reference for all internal circuits and return path for sense resistor current; must be low-impedance connection to thermal pad |
| 3 (IN) | Input Supply | High-voltage DC input - requires local 10–22µF low-ESR ceramic capacitor placed adjacent to minimize input ripple and EMI |
| 4 (RS) | Current Sense Input | High-side sense node - connects to current-sense resistor; layout proximity to IN pin reduces measurement error |
| 5 (EN/DIM) | Enable & Dimming Control | Multi-function pin - 0.2V threshold enables operation; 0.3–2.5V analog dimming or 100Hz–2kHz PWM dimming; internal 1.275V pull-up sets default startup |
| 6 (NC) | No Connect | Not bonded - must remain unconnected and un-routed to avoid parasitic coupling or mechanical stress |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic Control Architecture | Eliminates need for external compensation components and provides sub-100ns transient response to load changes |
| Integrated 36V MOSFET | Reduces bill-of-materials count and PCB footprint versus discrete FET + controller solutions |
| 1000:1 PWM Dimming Resolution | Enables smooth, flicker-free brightness control down to 0.1% intensity in architectural and signage applications |
| 200mV Average Feedback Voltage | Lowers power loss in sense resistor by >60% vs. conventional 1V references, improving thermal performance |
| Single-Pin Dimming & Enable | Minimizes routing complexity and eliminates dedicated dimming ICs in space-constrained LED modules |
Applications
| Automotive Decorative Lighting | Emergency Exit Signage |
|---|---|
|
Use Scenario: Illuminating interior accent strips and exterior trim on 12V/24V vehicle platforms with variable ambient temperature (-40°C to +125°C). IC Role / Device Role / Timing Role: Constant-current LED driver regulating 1A output across wide input transients (load dump, cold crank). Use Value: Internal UVLO (5.3V–5.9V) and thermal shutdown prevent malfunction during battery voltage sag or enclosure overheating. |
Use Scenario: Powering red/green LED arrays in UL924-compliant exit signs operating continuously from AC/DC backup supplies. IC Role / Device Role / Timing Role: High-efficiency step-down regulator delivering stable current despite input variations from 6V (battery) to 36V (regulated DC bus). Use Value: 200mV feedback reference reduces heat generation in sealed enclosures, extending LED lifetime beyond 50,000 hours. |
| Low-Voltage Halogen Replacement | LED Backlighting for Industrial Displays |
|
Use Scenario: Retrofitting 12V MR16 halogen fixtures with high-CRI white LEDs in retail and hospitality environments. IC Role / Device Role / Timing Role: Analog-dimming-capable WLED driver enabling smooth 25%–200% current scaling via 0.3–2.5V DC control signal. Use Value: Linear dimming curve matches human eye perception, eliminating visible steps or color shift during intensity adjustment. |
Use Scenario: Driving edge-lit LED bars behind ruggedized HMI panels used in factory automation and transportation control systems. IC Role / Device Role / Timing Role: Compact, thermally robust LED driver supporting PWM dimming up to 2kHz for flicker-free operation under camera capture. Use Value: QFN6 package with exposed thermal pad ensures reliable operation at 70°C ambient without forced airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP24895DJ-LF-Z | Successor with improved efficiency (up to 96%), lower quiescent current (0.5mA), and extended dimming frequency range (100Hz–10kHz) | Supports higher PWM frequencies for camera-synchronized backlighting and tighter thermal margins in compact designs | Select for new designs requiring longer lifetime, lower standby power, or compatibility with high-speed imaging systems |
| LM3409QMY/NOPB | Adjustable frequency (200kHz–2MHz), external MOSFET, higher max input (42V), but no integrated dimming logic or internal reference | Requires external PWM generator or DAC for dimming; better suited for custom high-power (>2A) or ultra-wide-input applications | Select when system-level control flexibility outweighs BOM simplification, or when >36V input is required |
Compared with MP24895DJ-LF-Z, MP24893DQ-LF-Z offers proven reliability in legacy automotive lighting but lacks updated efficiency and dimming bandwidth; versus LM3409QMY/NOPB, it trades external component count for fixed topology and reduced design iteration time.
Availability
MP24893DQ-LF-Z is available at Aetrix Electronics and suitable for automotive decorative lighting, emergency exit signage, and low-voltage halogen replacement requiring stable component supply and long-term production continuity.
Supply support for MP24893DQ-LF-Z 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 mixed-signal ICs for power management, LED lighting, and motor control applications.
The MP24893 belongs to MPS's white LED driver product line, engineered specifically for cost-sensitive, thermally constrained LED lighting systems operating from wide-input industrial and automotive power rails.
FAQ
What is the recommended current-sense resistor value for 1A LED output?
The MP24893DQ-LF-Z regulates LED current using a high-side sense resistor where RSET = 202mV / ILED. For 1A output, RSET = 0.202Ω. A standard 0.2Ω, 1% tolerance, 1W metal-film resistor is recommended to maintain accuracy and thermal stability under continuous operation.
Can MP24893DQ-LF-Z drive more than three LEDs in series?
Yes - maximum LED string voltage depends on input voltage minus dropout. With 36V input and 0.2Ω RDS(on), the device supports up to ~30V LED string (e.g., 9× 3.3V LEDs) at 1A, provided minimum on-time (100ns) and duty cycle (30–70%) constraints are met per application circuit design.
Is the EN/DIM pin compatible with microcontroller GPIO without level-shifting?
Yes - the EN/DIM pin accepts 0.3V–2.5V analog signals and 1.5V+ amplitude PWM waveforms directly from 3.3V or 5V MCU GPIOs. Its internal 1.275V pull-up and 45kΩ pull-up resistor eliminate need for external biasing in most digital control configurations.
Why does the datasheet state "NOT RECOMMENDED FOR NEW DESIGNS"?
MPS issued this notice because MP24895 replaces MP24893 with enhanced efficiency, lower IQ, wider PWM dimming range, and improved thermal performance. MP24893DQ-LF-Z remains fully qualified and supported for existing designs and legacy production, but MP24895 is preferred for new projects.
Does MP24893DQ-LF-Z require an output capacitor?
No - the MP24893DQ-LF-Z operates in continuous conduction mode and does not require an output capacitor for basic operation. However, a 2.2µF ceramic capacitor across the LED string reduces peak-to-peak current ripple to <30% of average current if low-ripple performance is critical for visual quality or photometric compliance.
How is thermal performance affected by the QFN6 exposed pad?
The QFN6 package's exposed thermal pad must be soldered to a minimum 100mm² copper pour with ≥4 thermal vias (0.3mm diameter) to inner ground plane. This configuration achieves θJA ≈ 50°C/W, allowing 2.5W continuous dissipation at +25°C ambient - essential for enclosed LED fixture reliability.
What failure protections are built into MP24893DQ-LF-Z?
The device integrates under-voltage lockout (5.3V turn-on, 700mV hysteresis), thermal shutdown at 150°C junction temperature with automatic recovery, and overcurrent limiting via hysteretic valley detection. No external protection components are required for basic fault coverage.
MP24893DQ-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 6V
- Voltage - Supply (Max):
- 36V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1A
- Frequency:
- -
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting, Signage
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-QFN (3x3)
MP24893DQ-LF-Z FAQ
1.How can I place an order for MP24893DQ-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP24893DQ-LF-Z 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 MP24893DQ-LF-Z reliable?
The price and inventory of MP24893DQ-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP24893DQ-LF-Z is usually 5 days.
3.What payment methods are accepted for MP24893DQ-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP24893DQ-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP24893DQ-LF-Z?
MP24893DQ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP24893DQ-LF-Z 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 MP24893DQ-LF-Z?
For technical support, including MP24893DQ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP24893DQ-LF-Z requirements.
6.How does Aetrix verify that MP24893DQ-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP24893DQ-LF-Z 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 MP24893DQ-LF-Z meets industry standards.
7.What is the process for return or replacement of MP24893DQ-LF-Z?
All MP24893DQ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP24893DQ-LF-Z, 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 MP24893DQ-LF-Z part is unused and in its original packaging.
Return procedure for MP24893DQ-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP24893DQ-LF-Z 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…
