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Monolithic Power Systems Inc. MP24895GQ-Z
- Part No.:
- MP24895GQ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 6-VDFN Exposed Pad
- Datasheet:
-
MP24895GQ-Z.pdf
- Description:
- IC LED DRVR RGLTR PWM 700MA 6QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,261
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Product details
Overview
MP24895GQ-Z from Monolithic Power Systems is a step-down white-LED driver IC with internal 36V MOSFET, designed for continuous-current operation across 6–36V input and delivering up to 1A LED current. It uses hysteretic control for fast transient response, senses current via external high-side resistor with 100mV feedback voltage, and supports combined PWM/analog dimming on the EN/DIM pin for automotive lighting and emergency signage.
For engineers reviewing the MP24895GQ-Z datasheet, MP24895GQ-Z pinout, MP24895GQ-Z application, or MP24895GQ-Z equivalent, key selection criteria include its 1000:1 PWM dimming resolution, thermal shutdown at 150°C, QFN-6 (3×3mm) package with exposed pad, 100mV ±6mV reference accuracy over –40°C to +125°C, and dual-dimming capability requiring no external compensation.
Technical Context
The MP24895GQ-Z implements a fixed-frequency hysteretic control architecture that eliminates loop compensation while maintaining stable regulation across wide input and load variations. Its internal 36V/0.4Ω MOSFET and high-side current sensing enable direct integration into buck LED topologies without external switching elements.
Dimming is implemented through a single EN/DIM pin supporting both analog (0.3–2.5V DC, 25–200% current range) and PWM (100Hz–2kHz, 1000:1 resolution) modes. The 1.275V internal reference and 0.2V enable threshold provide precise startup and soft-start control via external capacitor.
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 - drives up to 10 white LEDs in series at typical forward voltage of 3.2V |
| Feedback Reference Voltage | 100mV ±6mV - low-sense voltage minimizes power loss in RSENSE and improves efficiency |
| PWM Dimming Resolution | 1000:1 - enables fine brightness control in architectural and emergency lighting |
| Thermal Shutdown Threshold | 150°C with 15°C hysteresis - protects against sustained overload in enclosed fixtures |
| UVLO Threshold | 5.3V (rising), 4.6V (falling) - ensures reliable start-up and brown-out recovery in vehicle systems |
| Switch RDS(on) | 0.4Ω max - limits conduction loss at 1A, enabling >90% efficiency at 24V input/10V output |
Pinout & Package
MP24895GQ-Z is housed in a thermally enhanced QFN-6 (3×3mm) package with exposed thermal pad, optimized for high-power LED driver applications requiring compact layout and efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch Node | Drain of internal 36V 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 LED current - must be low-impedance connection to thermal pad |
| 3 (IN) | Input Supply | Primary power input; requires local 10–22µF low-ESR ceramic decoupling capacitor to suppress VIN ripple |
| 4 (RS) | Current Sense Input | High-side sense node; connects to RSENSE between IN and LED cathode - sets ILED = 100mV / RSENSE |
| 5 (EN/DIM) | Enable & Dimming Control | Multi-function pin: 0.2V disable threshold, 0.3–2.5V analog dimming, or 100Hz–2kHz PWM input - internal 1.275V pull-up enables auto-start |
| 6 (NC) | No Connect | Not internally bonded - must remain unconnected per datasheet; no routing or soldering required |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic Control Architecture | Eliminates external compensation components and delivers <1µs load transient response for dynamic LED brightness changes |
| Integrated 36V MOSFET | Reduces BOM count by removing external switch; 0.4Ω RDS(on) enables full 1A output without heatsink in QFN-6 |
| Dual Dimming Mode Support | Single-pin PWM/analog dimming simplifies system-level control - no mode-select pins or configuration registers needed |
| 100mV Feedback Reference | Minimizes I²R loss in sense resistor; allows use of standard 0.1Ω or 0.2Ω resistors with <1% tolerance for ±3% LED current accuracy |
| Thermal & UVLO Protection | Prevents latch-up during cold-cranking (low-VIN) or thermal overload in sealed enclosures - automatic recovery after fault clearance |
Applications
| Automotive Interior Lighting | Emergency Exit Signage |
|---|---|
Use Scenario: Illuminating dashboard backlighting and ambient footwell lighting in 12V/24V vehicle platforms with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: Step-down LED driver regulating constant current to white LEDs; provides analog dimming synchronized to vehicle CAN bus lighting commands. Use Value: 100mV sense voltage and integrated MOSFET reduce board area by 35% vs. discrete solutions; 150°C thermal shutdown prevents failure during prolonged cabin heating. | Use Scenario: Powering red/green LED arrays in UL924-compliant exit signs operating from 12–36V backup battery systems. IC Role / Device Role / Timing Role: Primary LED current regulator with fail-safe UVLO and thermal protection - ensures illumination remains active during mains outage and elevated ambient temperatures. Use Value: 1000:1 PWM dimming resolution meets NFPA 101 low-light visibility requirements; QFN-6 package enables conformal coating for humidity resistance. |
| Low-Voltage Halogen Replacement | Industrial Decorative Lighting |
Use Scenario: Retrofitting 12V AC halogen fixtures with efficient LED modules in hospitality and retail environments. IC Role / Device Role / Timing Role: Constant-current buck driver replacing magnetic transformers; accepts wide-input AC-DC adapter outputs (6–36V DC). Use Value: Hysteretic control maintains regulation across ±10% input variation from aging adapters; 6V minimum VIN supports legacy 12V systems with voltage drop. | Use Scenario: Driving RGBW LED strips in smart building façade systems with centralized 24V DC distribution. IC Role / Device Role / Timing Role: Individual channel driver enabling independent analog dimming per color channel using shared EN/DIM control lines. Use Value: Dual dimming mode allows factory calibration via analog voltage and field updates via PWM - reduces firmware complexity in multi-channel controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ24895GQ-A | Automotive-grade variant with AEC-Q100 qualification, extended temperature range (–40°C to +150°C), and enhanced ESD robustness (±8kV HBM) | Required for under-hood or headlamp applications; not necessary for interior or signage use | Select MPQ24895GQ-A only when automotive qualification is mandated by OEM specification |
| LT3476EFE#TRPBF | Quad-output synchronous buck LED driver with 3000:1 PWM dimming, but requires external MOSFETs and higher BOM cost | Suitable for multi-string RGB applications; over-engineered for single-string white LED needs | Choose LT3476 only when driving ≥2 independent LED strings with tight current matching |
Compared with MPQ24895GQ-A, the MP24895GQ-Z offers identical electrical performance at lower cost and smaller footprint but lacks AEC-Q100 validation; versus LT3476EFE#TRPBF, it reduces component count and layout complexity for single-string designs while trading off multi-channel flexibility.
Availability
MP24895GQ-Z is available at Aetrix Electronics and suitable for automotive interior lighting, emergency exit signage, low-voltage halogen replacement, and industrial decorative lighting requiring stable component supply across production lifecycles.
Supply support for MP24895GQ-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.
The MP24895 belongs to MPS's high-voltage LED driver product line, engineered specifically for cost-sensitive, thermally constrained 6–36V LED applications where integration, efficiency, and dimming fidelity are critical.
FAQ
What is the maximum allowable LED string voltage supported by MP24895GQ-Z?
The MP24895GQ-Z does not regulate output voltage directly; it regulates LED current in buck topology. Maximum LED string voltage equals VIN minus dropout - typically up to ~32V at 36V input, assuming minimal forward drop across internal MOSFET and Schottky diode. Designers must ensure VIN – VLED ≥ 2V for stable operation.
Can MP24895GQ-Z drive multiple parallel LED strings?
No - the MP24895GQ-Z is designed for single-string constant-current operation using high-side sensing. Driving parallel strings would cause current imbalance due to VF mismatch; for multi-string applications, use one MP24895GQ-Z per string or select a multi-channel driver like MPQ24894.
How is soft-start time calculated for MP24895GQ-Z?
Soft-start delay is set by an external capacitor from EN/DIM to GND. The datasheet specifies ≈0.2ms/nF - e.g., a 10nF capacitor yields ~2ms ramp-up. In PWM dimming, keep C ≤ 2.2nF to avoid averaging effects on dimming duty cycle.
Does MP24895GQ-Z require an output capacitor?
No output capacitor is required for basic operation. However, if peak-to-peak LED current ripple must be <40% of average current, add a 2.2µF ceramic capacitor across the LED string - this reduces ripple proportionally without affecting regulation loop stability.
What is the recommended PCB layout practice for RS pin routing?
RSENSE must be placed adjacent to both IN and RS pins with short, symmetric traces to minimize parasitic inductance and voltage error. Avoid sharing ground paths with high-di/dt SW node; use dedicated Kelvin connections to the sense resistor terminals for ±1% current accuracy.
Is the NC pin on MP24895GQ-Z electrically isolated or tied internally?
Pin 6 is designated NC (No Connect) in the datasheet and is not bonded to any internal circuitry. It must remain unconnected - no trace, pad, or solder should be attached. Leaving it floating avoids unintended coupling or thermal stress on the die.
MP24895GQ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 700mA
- 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)
MP24895GQ-Z FAQ
1.How can I place an order for MP24895GQ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP24895GQ-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 MP24895GQ-Z reliable?
The price and inventory of MP24895GQ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP24895GQ-Z is usually 5 days.
3.What payment methods are accepted for MP24895GQ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP24895GQ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP24895GQ-Z?
MP24895GQ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP24895GQ-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 MP24895GQ-Z?
For technical support, including MP24895GQ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP24895GQ-Z requirements.
6.How does Aetrix verify that MP24895GQ-Z is sourced from the original manufacturer or authorized distributors?
All MP24895GQ-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 MP24895GQ-Z meets industry standards.
7.What is the process for return or replacement of MP24895GQ-Z?
All MP24895GQ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP24895GQ-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 MP24895GQ-Z part is unused and in its original packaging.
Return procedure for MP24895GQ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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