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Monolithic Power Systems Inc. MP7230GLE-P
- Part No.:
- MP7230GLE-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 19-PowerVFQFN
- Datasheet:
-
MP7230GLE-P.pdf
- Description:
- 42V, 1.2A, SYNCHRONOUS BUCK-BOOS
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MP7230GLE-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous buck-boost or buck LED driver optimized for automotive infrared illumination. It delivers up to 1.2A constant current in buck-boost mode (6V–42V input) or 3A in buck mode, supports 10Hz–2kHz PWM dimming for 30/60/120FPS camera synchronization, and integrates 44mΩ/40mΩ high-side/low-side MOSFETs in a QFN-19 (3mm×4mm) wettable flank package. It is deployed in driver monitoring systems (DMS) requiring precise IR LED control under wide temperature and input voltage variation.
For engineers reviewing the MP7230GLE-P datasheet, MP7230GLE-P pinout, MP7230GLE-P application, or MP7230GLE-P equivalent, key selection criteria include its dual-mode topology configuration (via IREF resistor), NTC-based thermal derating capability, fault-indicating open-drain FAULT pin, and spread-spectrum 410kHz switching frequency with EMI reduction-critical for automotive camera EMI compliance and thermal management in compact DMS modules.
Technical Context
The MP7230GLE-P employs constant-frequency hysteretic control-eliminating loop compensation while enabling sub-100ns transient response to PWM dimming edges and load steps. Its dual-mode operation is determined by external resistor on IREF: ≤9.09kΩ selects buck-boost (1.2A max), ≥14.7kΩ selects buck (3A max), with corresponding LED current accuracy of ±5% over 700mA–1.2A (buck-boost) or 1A–2A (buck).
Full protection includes latch-off over-current protection (OCP), configurable thermal derating via NTC sensing (with 950–1090μA source current), thermal shutdown at 155°C–185°C, and fault detection for LED short (to GND/battery), LED open, and output over-voltage (17–19V). The device supports load-dump immunity up to 42V and features wettable flank QFN-19 packaging for automated optical inspection (AOI) in automotive production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6V to 42V - supports full automotive battery range including cold-crank (6V) and load-dump (42V) transients |
| Max Output Current | 1.2A (buck-boost) / 3A (buck) - enables flexible IR LED string sizing for DMS or surround-view cameras |
| LED Current Accuracy | ±5% (700mA–1.2A buck-boost; 1A–2A buck) - ensures consistent IR irradiance across temperature and unit variance |
| Switching Frequency | 410kHz nominal with ±10% spread spectrum - reduces EMI peak amplitude for CISPR 25 Class 5 compliance |
| PWM Dimming Range | 10Hz to 2kHz - supports 30/60/120FPS frame-synchronized IR pulsing without flicker or timing jitter |
| Thermal Derating | Configurable via NTC network - enables dynamic LED current reduction before thermal shutdown (155°C–185°C) |
| Package | QFN-19 (3mm×4mm) with wettable flanks - supports AOI and improves solder joint reliability in automotive reflow profiles |
Pinout & Package
MP7230GLE-P is housed in a thermally enhanced QFN-19 (3mm×4mm) package with wettable flanks for solder inspection. The exposed thermal pad (Pin 4/6/11/12 PGND) must be connected to a large PCB copper area for thermal dissipation. Pin 2 (NC) requires external connection to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NTC | Remote temperature sense input | Configures thermal derating threshold via resistor divider; protected against shorts to PGND/AGND/INGND |
| 3 EN | Enable control | Active-high logic (1.2V rising threshold); internal pull-down ensures default OFF state when floating |
| 4,13 VIN | Main power input | Accepts 6V–42V; requires low-ESR input capacitor and wide PCB trace for high di/dt handling |
| 5,6,11,12 PGND | Power ground reference | High-current return path for MOSFETs and SW node; critical for EMI and thermal performance |
| 7 BST | Bootstrap supply | Connects to SW via capacitor to bias high-side gate driver; optional series resistor reduces SW ringing |
| 8,9 SW | Switch node | Drives external inductor; small layout area and wide trace minimize EMI coupling and voltage spikes |
| 10 FAULT | Open-drain fault indicator | Pulled low on LED short/open, OCP, OTP, or false-mode detection; internal 300kΩ pull-up to VIN |
| 14 INGND | Buck-boost signal ground | Separate ground for DIM/EN/FAULT in buck-boost topology; tied to PGND/AGND in buck mode |
| 15 AGND | Analog ground | Reference for ISET/IREF/NTC; externally connected to PGND with short low-impedance trace |
| 16 VCC | Internal bias supply | Requires ≥3µF X7R ceramic decoupling close to pin; derated 10µF/10V recommended |
| 17 IREF | Mode selection & reference current | Resistor value sets topology: ≤9.09kΩ = buck-boost, ≥14.7kΩ = buck; 0.57V regulated reference |
| 18 ISET | LED current set | External resistor to GND programs average LED current; fault latches on open/short |
| 19 DIM | PWM dimming input | 1.6V rising threshold; supports 100µs minimum on-time and 100ms maximum off-time for low-frequency IR pulsing |
Key Features
| Feature | Design Value |
|---|---|
| Configurable topology | Select buck (3A) or buck-boost (1.2A) via single IREF resistor - eliminates BOM variants for multi-platform designs |
| Integrated power MOSFETs | 44mΩ HS / 40mΩ LS RDS(on) - reduces external component count and conduction losses in space-constrained modules |
| Hysteretic control | No external compensation required - simplifies layout and ensures stable operation across LED Vf variation and temperature |
| Spread-spectrum switching | ±10% fSW modulation at 15kHz offset - lowers EMI fundamental and harmonics without sacrificing efficiency |
| AEC-Q100 Grade 1 | -40°C to +150°C operation - qualified for under-hood and cabin-mounted automotive IR illumination systems |
| Wettable flank QFN | Facilitates automated optical inspection of solder joints - improves yield and field reliability in high-volume automotive manufacturing |
Applications
| Driver Monitoring Systems (DMS) | Automotive Cabin Camera Illumination |
|---|---|
Use Scenario: Real-time driver attention tracking using near-infrared (NIR) LEDs in vehicle cabins under varying ambient light and temperature. IC Role / Device Role / Timing Role: Constant-current LED driver with frame-synchronized PWM dimming to eliminate interference with camera exposure timing. Use Value: Enables reliable 30/60FPS NIR pulsing with ±5% current accuracy across -40°C to +105°C, ensuring consistent pupil detection in all conditions. |
Use Scenario: Illuminating rear-seat occupancy or gesture recognition zones with invisible NIR light for privacy-compliant monitoring. IC Role / Device Role / Timing Role: High-efficiency buck-mode driver delivering 3A to short LED strings, minimizing thermal rise in enclosed cabin modules. Use Value: 96% peak efficiency at 3A reduces heatsink requirements and allows integration into slim overhead console assemblies. |
| Automotive Front-Facing Surveillance Cameras | ADAS Night Vision Illumination |
Use Scenario: Wide-angle front camera illumination for parking assistance and low-light object detection in OEM ADAS platforms. IC Role / Device Role / Timing Role: Buck-boost driver supporting variable LED string configurations (3–6 LEDs) across diverse vehicle battery voltages (9V–16V). Use Value: Maintains 1.2A output current with <±3% line regulation from 9V–42V input, eliminating need for pre-regulators in 12V/24V mixed fleets. |
Use Scenario: Long-range NIR illumination for pedestrian detection beyond 100m in adaptive driving beam (ADB) systems. IC Role / Device Role / Timing Role: Thermally robust driver with NTC-based derating to sustain peak 1.2A output during extended night operation. Use Value: Configurable thermal foldback prevents luminance drop at junction temperatures >125°C, preserving detection range in hot ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive IR LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ7230GLE-AEC1 | Identical electrical specs and pinout; differs only in top marking and MSL rating (1 vs. unspecified for MP7230GLE-P) | Same AEC-Q100 Grade 1 qualification; intended for same DMS/camera use cases | Select MPQ7230GLE-AEC1 for tape-and-reel volume procurement with guaranteed MSL1 handling |
| TLC5940QPWPRQ1 | 16-channel linear LED driver (not switching); max 120mA/channel, no buck/buck-boost topology | Suitable for low-power interior status indicators, not high-current IR illumination | Use only for non-thermal-critical, low-current (<200mA) automotive lighting where PWM resolution > 12-bit is required |
Compared with MPQ7230GLE-AEC1, MP7230GLE-P offers identical functionality but lacks explicit MSL1 documentation-making it suitable for prototyping and low-volume builds where moisture sensitivity is managed internally. TLC5940QPWPRQ1 serves fundamentally different applications due to its linear architecture and current limit, ruling it out for IR illumination requiring >1A output.
Availability
MP7230GLE-P is available at Aetrix Electronics and suitable for driver monitoring systems (DMS), automotive cabin camera illumination, and ADAS night vision illumination requiring stable component supply across automotive production lifecycles.
Supply support for MP7230GLE-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 power management ICs, with core expertise in DC/DC conversion, LED drivers, and motor control solutions.
The MPQ7230 product line is designed specifically for automotive infrared LED illumination-emphasizing AEC-Q100 qualification, wide-input operation, frame-synchronized dimming, and integrated thermal protection for safety-critical driver monitoring and vision systems.
FAQ
What topology does MP7230GLE-P operate in by default?
The MP7230GLE-P has no default topology-it enters buck-boost mode when the IREF pin is pulled to ground with ≤9.09kΩ, and buck mode with ≥14.7kΩ. The device samples IREF at the first rising edge of EN and locks the mode until next power cycle. No external configuration circuitry is needed beyond the resistor.
How is thermal derating implemented without an external temperature sensor?
Thermal derating uses an external NTC thermistor connected between IREF and the NTC pin (Pin 1). The device sources 950–1090μA from NTC, generating a voltage that scales with temperature. When NTC voltage drops below thresholds (e.g., 1.25V at 98% current), the IC linearly reduces LED current to prevent thermal shutdown.
Can MP7230GLE-P drive LEDs with forward voltages exceeding 42V?
No. The maximum output voltage is limited by the 42V absolute maximum rating on VIN and the internal 19V over-voltage protection (OVP) threshold on the output. In buck-boost mode, the output is clamped to ≤19V; in buck mode, output cannot exceed VIN. For >42V LED strings, a cascaded or flyback solution is required.
What is the minimum PWM dimming pulse width supported?
The MP7230GLE-P requires a minimum DIM on-time of 100µs to avoid false FAULT assertion. This enables reliable 10Hz dimming (100ms period) while supporting high-frequency 2kHz operation. Off-time can extend up to 100ms, making it compatible with slow-frame-rate automotive camera synchronization.
Does MP7230GLE-P support analog dimming or only PWM?
MP7230GLE-P supports PWM dimming only. Analog dimming is not implemented-the ISET pin sets average current only; no DAC or voltage-controlled current scaling is provided. Brightness control must be achieved via external PWM signal applied to the DIM pin.
How is fault condition latching behavior configured?
Over-current protection (OCP) and ISET/NTC pin faults trigger latch-off behavior-requiring EN cycling to reset. LED short/open and thermal faults also assert FAULT low but do not latch; they clear automatically when the fault condition ends. FAULT pin remains low for ≥20μs after fault detection to ensure reliable MCU capture.
Is the QFN-19 package RoHS and halogen-free compliant?
Yes. MP7230GLE-P is lead-free, halogen-free, and fully compliant with the EU RoHS directive. MPS confirms green status per its Quality Assurance documentation, and the wettable flank plating meets J-STD-020 moisture sensitivity requirements for automotive reflow profiles.
MP7230GLE-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 19-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 6V
- Voltage - Supply (Max):
- 42V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1.2A, 3A
- Frequency:
- 410kHz
- Dimming:
- PWM
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 19-QFN (3x4)
MP7230GLE-P FAQ
1.How can I place an order for MP7230GLE-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP7230GLE-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 MP7230GLE-P reliable?
The price and inventory of MP7230GLE-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP7230GLE-P is usually 5 days.
3.What payment methods are accepted for MP7230GLE-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP7230GLE-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP7230GLE-P?
MP7230GLE-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP7230GLE-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 MP7230GLE-P?
For technical support, including MP7230GLE-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP7230GLE-P requirements.
6.How does Aetrix verify that MP7230GLE-P is sourced from the original manufacturer or authorized distributors?
All MP7230GLE-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 MP7230GLE-P meets industry standards.
7.What is the process for return or replacement of MP7230GLE-P?
All MP7230GLE-P units undergo pre-shipment inspection (PSI). If there is an issue with MP7230GLE-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 MP7230GLE-P part is unused and in its original packaging.
Return procedure for MP7230GLE-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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