My Inquiry
My Account
Monolithic Power Systems Inc. MP4601ES-LF-P
- Part No.:
- MP4601ES-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MP4601ES-LF-P.pdf
- Description:
- NRFND: FOR NEW DESIGNS, RECOMMEN
- Quantity:
- Payment:
- Shipping:
Inventory:2,976
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP4601ES-LF-P from Monolithic Power Systems is a current-mode buck-boost white LED driver IC designed for large-size LCD TV backlighting, supporting up to 100 LEDs in series with output voltage up to VINH+63V (VINH ≤ 350V), integrated 0.5Ω MOSFET switch, ±5% 200mV reference voltage, and over 1:1000 dimming ratio via PWM + analog control.
For engineers reviewing the MP4601ES-LF-P datasheet, MP4601ES-LF-P pinout, MP4601ES-LF-P application, or MP4601ES-LF-P equivalent, key selection criteria include its dual-voltage input architecture (VINL=12V + external high-voltage bus), programmable cycle-by-cycle OCP, FAULT open-drain output for LED short detection, and TSSOP16-EP/SOIC16 package compatibility for high-power density TV backlight designs.
Technical Context
The MP4601ES-LF-P implements peak-current-mode control with programmable slope compensation (1.2 V/µs default) to ensure stability at >50% duty cycles. Its novel power leverage topology regulates only a small portion of the total LED string voltage, enabling high efficiency (up to 99.5%) while operating with fixed high-voltage bus sources.
It integrates fault protection including LED open detection (via OVP pin threshold at 1.2V), immediate latch-off for FB >600mV, 480µs delay latch-off for 300mV < FB < 600mV, thermal shutdown at 150°C, and cycle-by-cycle current limiting set by ROCP resistor (default 2.5A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Buck-boost regulator with internal 0.5Ω MOSFET switch - enables single-stage high-voltage LED driving without external high-side switch. |
| Input Voltage Range | VIN = 4.5V to 75V - supports standard 12V auxiliary rail (VINL) while leveraging external high-voltage bus (VINH) up to 350V. |
| Feedback Reference | 200mV ±5% - sets LED current via external RFB; enables precise current regulation across temperature and process variation. |
| Dimming Ratio | >1:1000 - achieved via combined PWM (100Hz–50kHz) and analog dimming (0.7V–1.5V on DIM pin), critical for high-contrast TV local dimming. |
| Switching Frequency | 0.8–1.2 MHz (default 0.95 MHz) - programmable via FST pin resistor; high frequency allows smaller magnetics and reduced EMI filtering. |
| Quiescent Current | 850 µA - low standby power consumption; shutdown mode draws only 10 µA for system-level power management. |
| Thermal Protection | 150°C junction shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
MP4601ES-LF-P is available in SOIC16 package (10.0 mm × 3.9 mm × 1.75 mm) with exposed pad optional in TSSOP16-EP variant; both packages support industrial temperature range (–40°C to +125°C junction).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 2) | Low-voltage input supply | Accepts 4.5–75V auxiliary rail (e.g., 12V); powers internal circuitry and bootstrap capacitor charging. |
| INGND (Pin 3) | Input ground reference | Reference for EN, DIM, SYN signals; separate from power ground to reduce noise coupling into control pins. |
| EN (Pin 6) | Enable control input | Logic-level enable: >1.7V turns on IC; <0.6V disables operation and reduces quiescent current to 10 µA. |
| DIM (Pin 5) | Dimming control interface | Accepts PWM (100Hz–50kHz) or analog (0.7–1.5V) signal; enables hybrid dimming for >1:1000 contrast ratio. |
| FB (Pin 11) | LED current sense feedback | Regulates voltage across external RFB to 200mV; triggers LED short protection if >600mV or >300mV for 480 µs. |
| OVP (Pin 12) | Overvoltage protection input | Programmable threshold (1.2V) via resistor divider; shuts down SW when LED string voltage exceeds safe limit. |
| FAULT (Pin 1) | Fault status output | Open-drain output pulled to INGND during LED short or latch-off condition; enables system-level fault reporting. |
| SW (Pin 15) | Power switch node | Drives external inductor and Schottky rectifier; connects to BST capacitor for high-side gate drive. |
Key Features
| Feature | Design Value |
|---|---|
| Novel power leverage control | Regulates only fraction of total LED string voltage - enables use of low-voltage IC to drive 350V strings with minimal component stress. |
| Integrated 0.5Ω MOSFET | Reduces external BOM count and conduction losses - supports high-efficiency operation (>99.5%) without discrete high-voltage switch. |
| Programmable cycle-by-cycle OCP | ROCP resistor sets current limit from 1.1A to 4.1A - allows precise inductor and layout optimization for specific panel power requirements. |
| Synchronization-ready SYN pin | Supports multi-IC frequency locking without external clock - eliminates beat frequencies in multi-channel TV backlight systems. |
| Combined analog + PWM dimming | Enables >1:1000 dimming ratio with sub-200Hz PWM - meets stringent contrast requirements for premium LCD TVs and digital signage. |
Applications
| TV Backlighting | Large Format Digital Signage |
|---|---|
Use Scenario: Driving 60+ inch LCD panels with 40–100 LED strings in series, requiring stable current regulation under varying ambient temperature and line voltage. IC Role / Device Role / Timing Role: Primary LED current controller implementing buck-boost conversion with power leverage architecture to manage 240–350V LED string voltages. Use Value: Enables compact, high-efficiency backlight solution with 99.5% peak efficiency and <100 µA shutdown current - reducing thermal load and power supply size in slim TV chassis. | Use Scenario: High-brightness outdoor displays requiring wide dimming range (0.01%–100%) and robust fault handling in uncontrolled thermal environments. IC Role / Device Role / Timing Role: Fault-tolerant LED driver with immediate LED short latch-off and FAULT pin reporting - ensures display reliability during extended operation. Use Value: Dual-dimming capability (PWM + analog) delivers >1:1000 contrast ratio while maintaining color uniformity across large-area panels. |
| Commercial Monitor Backlighting | Medical Imaging Display Lighting |
Use Scenario: 32–55 inch professional monitors demanding flicker-free dimming, low EMI, and consistent luminance across 10,000+ hour lifetime. IC Role / Device Role / Timing Role: Precision current regulator with ±5% 200mV reference and programmable slope compensation - ensures stable CCM operation and minimal current ripple. Use Value: High-frequency switching (up to 1.2 MHz) minimizes inductor size and audible noise - critical for quiet office and studio environments. | Use Scenario: Diagnostic-grade medical displays requiring absolute brightness stability, zero flicker, and fail-safe LED open/short detection per IEC 62368-1. IC Role / Device Role / Timing Role: Safety-critical LED driver with dual-level LED short protection (immediate + delayed), thermal shutdown, and FAULT pin assertion for system-level diagnostics. Use Value: Programmable OVP (1.2V threshold) and FB-based open-circuit detection provide deterministic fault response - meeting clinical display safety certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4603 | Successor device with improved efficiency (99.7%), lower quiescent current (650 µA), and enhanced thermal performance; pin-compatible but requires updated layout for thermal pad. | Targeted for new designs requiring extended lifetime and tighter thermal margins in ultra-slim TV chassis. | Select MP4603 for new projects; MP4601ES-LF-P remains viable for legacy production and cost-sensitive replacements. |
| LM3409HV | External MOSFET controller (no integrated switch); supports higher VIN (75V) but requires external high-side FET and gate driver; no integrated dimming logic. | Suitable for custom high-reliability industrial LED drivers where discrete component selection and failure mode analysis are required. | Choose LM3409HV only when design flexibility, MIL-STD-883 qualification, or discrete FET derating is mandatory. |
Compared with MP4603, MP4601ES-LF-P offers identical pinout and functional coverage but with slightly higher quiescent current and lower thermal margin; versus LM3409HV, it trades external component count and layout complexity for integration and faster time-to-market in consumer TV applications.
Availability
MP4601ES-LF-P is available at Aetrix Electronics and suitable for TV backlighting, large-format digital signage, commercial monitor lighting, and medical imaging display applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP4601ES-LF-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 core expertise in DC/DC conversion, LED drivers, and motor control solutions.
The MP4601 belongs to MPS's high-voltage LED driver product line, engineered specifically for energy-efficient, compact backlighting of large-screen LCD TVs and commercial displays using patented power leverage architecture.
FAQ
What is the maximum LED string voltage supported by MP4601ES-LF-P?
The MP4601ES-LF-P supports LED string voltages up to VINH + 63V, where VINH is an external high-voltage bus. With VINH up to 350V, the total string voltage can reach 413V. This is enabled by its power leverage topology, which regulates only a small portion of the string voltage rather than the full output.
Does MP4601ES-LF-P support both analog and PWM dimming simultaneously?
Yes - MP4601ES-LF-P supports hybrid dimming: applying a 100Hz–50kHz PWM signal with amplitude between 0.7V and 1.5V to the DIM pin combines analog current scaling with digital on/off control, achieving >1:1000 dimming ratio essential for high-end TV local dimming.
How is LED short-circuit protection implemented on MP4601ES-LF-P?
LED short protection uses dual-threshold FB monitoring: immediate latch-off occurs if FB > 600mV; if FB stays between 300mV and 600mV for 480 µs, the IC also latches off. The FAULT pin is pulled low to INGND in either case, and EN must be cycled to reset.
What is the purpose of the SLOPE pin, and how is it configured?
The SLOPE pin provides programmable ramp compensation for peak-current-mode control. Connecting RSLOPE (20k–500kΩ) to VSS sets slope from 0.39–1.2 V/µs. Default is 1.2 V/µs when left open - required to prevent subharmonic oscillation above 50% duty cycle.
Can MP4601ES-LF-P operate without an external high-voltage bus?
No - MP4601ES-LF-P requires two inputs: low-voltage VINL (4.5–75V, typically 12V) for IC bias and bootstrap, plus external high-voltage VINH (up to 350V) for LED string power. It cannot generate high output voltage from VINL alone due to its buck-boost leverage architecture.
Is MP4601ES-LF-P pin-compatible with MP4603?
Yes - MP4601ES-LF-P and MP4603 share identical pinout, package footprint, and basic functionality. However, MP4603 improves quiescent current (650 µA vs. 850 µA), efficiency (99.7% vs. 99.5%), and thermal performance, and is recommended for all new designs.
What package variants are offered for MP4601ES-LF-P?
MP4601ES-LF-P is the SOIC16 variant (RoHS-compliant, lead-free). The TSSOP16-EP variant is designated MP4601EF-LF-P. Both operate over –40°C to +125°C junction temperature and share identical electrical specifications.
MP4601ES-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 75V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 200kHz ~ 1.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MP4601ES-LF-P FAQ
1.How can I place an order for MP4601ES-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4601ES-LF-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 MP4601ES-LF-P reliable?
The price and inventory of MP4601ES-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4601ES-LF-P is usually 5 days.
3.What payment methods are accepted for MP4601ES-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4601ES-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4601ES-LF-P?
MP4601ES-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4601ES-LF-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 MP4601ES-LF-P?
For technical support, including MP4601ES-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4601ES-LF-P requirements.
6.How does Aetrix verify that MP4601ES-LF-P is sourced from the original manufacturer or authorized distributors?
All MP4601ES-LF-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 MP4601ES-LF-P meets industry standards.
7.What is the process for return or replacement of MP4601ES-LF-P?
All MP4601ES-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP4601ES-LF-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 MP4601ES-LF-P part is unused and in its original packaging.
Return procedure for MP4601ES-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP4601ES-LF-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
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…
