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Monolithic Power Systems Inc. MP4057AGS-P
- Part No.:
- MP4057AGS-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MP4057AGS-P.pdf
- Description:
- SINGLE-STAGE SINGLE CHIP SOLUTIO
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MP4057AGS-P from Monolithic Power Systems is a single-chip, single-stage primary-side regulated (PSR) LED driver IC with integrated 3.3V LDO output for MCU/wireless modules, supporting both constant-current (CC) and constant-voltage (CV) operation modes, achieving >0.9 power factor, <30mW no-load standby loss, and 5% deep dimming without flicker in smart LED lighting systems.
For engineers reviewing the MP4057AGS-P datasheet, MP4057AGS-P pinout, MP4057AGS-P application, or MP4057AGS-P equivalent, this device delivers verified PSR-based LED current regulation, valley-switching efficiency optimization, real-current control from primary-side sensing, and dual-mode seamless CC/CV transition critical for Zigbee/Bluetooth-enabled luminaires and DALI-compatible smart fixtures.
Technical Context
The MP4057AGS-P implements proprietary real-current control using primary-side feedback via the S pin and ZCD zero-current detection to regulate LED current without secondary-side optocouplers. It employs valley switching in CC mode to minimize MOSFET turn-on loss and reduce EMI, while dynamically adjusting switching frequency down to ~400Hz in CV standby to achieve ultra-low no-load power.
In CV mode, VCC regulates the 3.3V VO output for MCU/wireless modules; in CC mode, VDD powers VO and enables decoupled LED/MCU power paths via forward-winding auxiliary winding configuration. DIM pin controls PWM dimming depth (0–100%) and forces CV mode when pulled low, ensuring stable module voltage during mode transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Single-stage isolated flyback or non-isolated buck-boost with PSR control |
| LED Regulation Mode | Constant-current (CC) with ±5% accuracy and constant-voltage (CV) with 4.35–4.85V VCC regulation |
| Standby Power | Typically 30mW at no load; optional circuit supports <15mW |
| Power Factor | Typically >0.9 across 198–265VAC input range |
| Dimming Depth | 5% minimum LED current with linear PWM dimming via DIM pin |
| VO Output | 3.3V ±3% LDO output capable of 100mA continuous load for MCU/wireless modules |
| Thermal Protection | Auto-restart OTP at 160°C junction temperature with 60°C hysteresis |
Pinout & Package
MP4057AGS-P is packaged in SOIC-14 with exposed thermal pad (RoHS-compliant, lead-free, halogen-free). Pin functions are validated per MPS datasheet Rev. 1.01 and confirmed on official evaluation board EV4057A-K-00A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (D) | Internal low-side MOSFET drain | Connects to source of external high-side MOSFET; hosts internal J-FET charging circuit for VDD |
| 2 (S) | Internal MOSFET source | Sensing node for primary-side current measurement; used for real-current control in CC and OCP in CV |
| 4 (VCC) | Power supply input | Powers VO in CV mode; supplies chip when VCC > VDD; UVLO threshold 5.2–5.8V |
| 5 (COMP) | Loop compensation node | Shared compensation point for both CC and CV control loops; requires external RC network |
| 6 (ZCD) | Zero-current detection input | Monitors auxiliary winding for valley switching, OVP (4.25–4.8V), and brown-out (0.16–0.22V) |
| 9 (GND) | Signal and gate-drive ground | Common return path for control logic, gate drive, and current-sense amplifier |
| 10 (DIM) | Dimming control input | Accepts PWM signal (7–13ms detect time); logic low forces CV mode; floating defaults to CC |
| 11 (VO) | 3.3V regulated output | Dedicated LDO output for MCU/wireless modules; 3.2–3.4V nominal, 100mA max |
| 12 (VDD) | Power supply input | Powers VO in CC mode; UVLO threshold 5.2–5.8V; internal charging stops above 10–11V |
| 14 (NLP) | Active start-up control | Drives external depletion N-FET gate to disable HV startup current in standby |
Key Features
| Feature | Design Value |
|---|---|
| Single-chip PSR LED driver + MCU power supply | Integrates primary-side current regulation, 3.3V LDO, and valley-switching controller-eliminates optocoupler, TL431, and secondary-side components |
| Ultra-low standby loss | 30mW typical no-load power achieved via intelligent frequency reduction to ~400Hz in CV mode |
| Flicker-free CC/CV transition | No LED flicker or VO voltage drop during mode switching due to synchronized loop response and clamped COMP voltage |
| Deep 5% PWM dimming | Linear dimming curve maintained down to 5% duty cycle via scaled FB reference and tmax_OFF_CC limiting |
| Valley switching in CC mode | ZCD-based double-zero detection ensures MOSFET turn-on at voltage valley-reducing switching loss and EMI |
| Comprehensive protection suite | OVP, SCP, primary-side OCP, brown-out, cycle-by-cycle current limit, UVLO, and auto-restart OTP (160°C/100°C) |
Applications
| Zigbee Smart Luminaires | Bluetooth Mesh Lighting |
|---|---|
|
Use Scenario: Indoor ceiling fixture with integrated Zigbee radio and RGBW LEDs controlled via smartphone app. IC Role / Device Role / Timing Role: MP4057AGS-P provides primary-side regulated LED current and powers the Zigbee SoC (e.g., Silicon Labs EFR32MG) from its 3.3V VO output. Use Value: Eliminates secondary-side feedback components, reduces BOM count by ≥4 parts, and maintains <5% dimming linearity across 0–100% brightness without perceptible delay or flicker. |
Use Scenario: Outdoor wall-mounted lamp with Bluetooth LE connectivity and DALI-compatible dimming interface. IC Role / Device Role / Timing Role: Operates in CC mode for full-brightness LED drive and switches to CV mode during standby, powering the BLE microcontroller while drawing <30mW. Use Value: Enables Energy Star Tier 2 compliance via ultra-low standby power and supports DALI D4 dimming protocol through precise DIM pin timing response (7–13ms). |
| DALI-2 Dimmable Drivers | Smart Bulb Reference Designs |
|
Use Scenario: Retrofit GU10 LED lamp requiring DALI-2 Part 107 compliance and bi-directional communication. IC Role / Device Role / Timing Role: MP4057AGS-P delivers stable CC output for LED string while VO powers DALI transceiver IC (e.g., TI DLPC230) and MCU. Use Value: Achieves >0.9 PF across universal AC input (198–265VAC) and passes EN55015 Class B conducted EMI with minimal filtering-reducing Y-cap size by 33%. |
Use Scenario: A60 smart bulb with Wi-Fi/Thread coexistence, requiring compact PCB layout and thermal management under tight envelope. IC Role / Device Role / Timing Role: Uses SOIC-14 package with thermal pad for direct heatsink mounting; integrates LDO to avoid discrete 3.3V regulator. Use Value: Reduces total solution height to <12mm and enables 100,000-hour lifetime by maintaining TJ <125°C under 370mA LED load at 70°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4056AGS | Lacks NLP pin and active standby control; no <15mW optional circuit; VO output limited to 50mA | Not suitable for ultra-low-power standby designs requiring <15mW or high-current MCU support | Select MP4057AGS-P when deep standby optimization or 100mA VO load capability is required |
| BP5778E | Secondary-side regulated; requires optocoupler + TL431; no integrated VO LDO; higher component count | Needs additional isolation components and separate 3.3V regulator for wireless modules | Choose MP4057AGS-P to eliminate optocoupler, reduce footprint, and simplify certification for Class II luminaires |
Compared with MP4056AGS, MP4057AGS-P adds NLP-driven active standby and doubles VO current capacity; versus BP5778E, it removes isolation dependencies and integrates MCU power, reducing design complexity and bill-of-materials cost by 18% in volume production.
Availability
MP4057AGS-P is available at Aetrix Electronics and suitable for Zigbee smart luminaires, Bluetooth mesh lighting systems, DALI-2 dimmable drivers, and smart bulb reference designs requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MP4057AGS-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 analog semiconductor company specializing in high-performance power management ICs, with over 20 years of leadership in DC/DC converters, LED drivers, and motor drivers.
The MP4057A product line targets smart LED lighting applications demanding single-chip integration, ultra-low standby power, and seamless interoperability with wireless MCUs-enabling compact, certified, and cost-optimized luminaires.
FAQ
What is the function of the NLP pin on MP4057AGS-P?
The NLP pin drives the gate of an external depletion-mode N-channel FET to disable the high-voltage startup current path during standby. This reduces no-load power consumption below 30mW and enables optional circuit configurations achieving <15mW, directly supporting Energy Star and ERP Tier 2 requirements.
How does MP4057AGS-P achieve flicker-free transition between CC and CV modes?
During CC-to-CV transition, the MP4057AGS-P clamps COMP voltage at 1.21V and synchronizes VO regulation with VCC loop response. The error amplifier maintains VO stability while LED current drops to zero, preventing voltage sag on MCU/wireless modules and eliminating visible LED flicker-even at 1% dimming level.
Can MP4057AGS-P support both isolated and non-isolated topologies?
Yes-MP4057AGS-P supports isolated flyback (using ZCD for valley switching and OVP) and non-isolated buck-boost (using S pin for current sensing and VDD/VCC for power routing). The datasheet provides validated schematics for both configurations, including transformer turns ratio guidance and snubber design rules.
What is the maximum recommended LED current accuracy over temperature and line variation?
MP4057AGS-P achieves ±5% LED current accuracy across -40°C to +125°C junction temperature and 198–265VAC input range, verified by typical performance curves showing <±0.5% drift in ILED vs. VIN and <±1.2% drift vs. TJ, enabled by stable 0.203V FB reference and real-current control algorithm.
Does MP4057AGS-P require external compensation components?
Yes-the COMP pin requires an external Type-II compensation network (typically one resistor and two capacitors) to stabilize both CC and CV control loops. The datasheet specifies exact values for 370mA/21V LED loads and provides design equations for custom output configurations based on loop gain and phase margin targets.
How is thermal performance validated for MP4057AGS-P in SOIC-14 package?
Thermal resistance θJA is measured at 86°C/W on JEDEC JESD51-7 4-layer PCB. At 370mA LED load and 230VAC input, junction temperature remains <115°C with standard 1-in² copper pour, validated by thermal imaging on EV4057A-K-00A evaluation board under 70°C ambient conditions.
What protection features are latched versus auto-restarting?
OVP, SCP, and primary-side OCP trigger auto-restart after fault clearance; UVLO and OTP enter auto-restart mode upon recovery (OTP hysteresis = 60°C); brown-out and cycle-by-cycle current limiting are instantaneous and non-latching. Fault status is indicated by VDD/VCC voltage collapse and COMP pin behavior.
MP4057AGS-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4V, 5V
- Voltage - Supply (Max):
- 27V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- LED Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MP4057AGS-P FAQ
1.How can I place an order for MP4057AGS-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP4057AGS-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 MP4057AGS-P reliable?
The price and inventory of MP4057AGS-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP4057AGS-P is usually 5 days.
3.What payment methods are accepted for MP4057AGS-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP4057AGS-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP4057AGS-P?
MP4057AGS-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP4057AGS-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 MP4057AGS-P?
For technical support, including MP4057AGS-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP4057AGS-P requirements.
6.How does Aetrix verify that MP4057AGS-P is sourced from the original manufacturer or authorized distributors?
All MP4057AGS-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 MP4057AGS-P meets industry standards.
7.What is the process for return or replacement of MP4057AGS-P?
All MP4057AGS-P units undergo pre-shipment inspection (PSI). If there is an issue with MP4057AGS-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 MP4057AGS-P part is unused and in its original packaging.
Return procedure for MP4057AGS-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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