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Monolithic Power Systems Inc. MP3320AGG-Z
- Part No.:
- MP3320AGG-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 14-VFQFN
- Datasheet:
-
MP3320AGG-Z.pdf
- Description:
- 4-CHANNEL, CHARGE PUMP RGB LED D
- Quantity:
- Payment:
- Shipping:
Inventory:1,840
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Product details
Overview
MP3320AGG-Z from Monolithic Power Systems is a 4-channel, self-adaptive charge pump RGBW LED driver with I²C interface, designed for precise current regulation across red, green, blue, and white LED channels. It operates from 1.8V to 5.5V input, delivers up to 51mA per channel, supports 10-bit PWM + 8-bit analog dimming, and integrates phase-shifted PWM to suppress audible noise-used in compact wearable status lighting and smart device indicators.
For engineers reviewing the MP3320AGG-Z datasheet, MP3320AGG-Z pinout, MP3320AGG-Z application, or MP3320AGG-Z equivalent, this page provides verified functional identity, validated QFN-14 (2mm×2mm) package mapping, confirmed I²C address configurability (16 options via ADR resistor), real-world dimming timing constraints (e.g., 1μs minimum PWM pulse width), and protection behavior under LED open/short fault conditions.
Technical Context
The MP3320AGG-Z implements a self-adaptive charge pump with auto-selectable transfer ratios (1x/1.5x/2x) based on real-time LED headroom voltage feedback, eliminating manual mode selection. Its four independent current sinks feature dual-dimming control: 8-bit analog current scaling (0.2–20mA range) and 10-bit PWM with configurable frequency (default 1.95kHz) and 90°–180° inter-channel phase shift.
Protection logic is fully register-configurable: LED open detection triggers at 50–110mV with 24ms delay; LED short threshold is settable at 2.8–3.2V; over-voltage protection activates at 5.5V with 500mV hysteresis; thermal shutdown engages at 150°C with 25°C hysteresis. All fault states report via dedicated flag bits (FT_CHxO/FT_CHxS) readable over I²C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports direct battery operation from single-cell Li-ion (3.0–4.2V) or 3.3V/5V rails without external LDO. |
| Max Output Voltage | 5.5V - sufficient to drive typical RGBW LEDs (VF ≈ 2.0–3.6V) in series configurations with margin for headroom. |
| Channel Current | Up to 51mA per channel - enables high-brightness indicator use while maintaining <0.75% matching error between channels at 20mA. |
| PWM Resolution | 10-bit (0–1024 steps) - provides 0.1% duty resolution for smooth brightness transitions in breathing or animation effects. |
| I²C Interface | 400kHz standard-mode - compatible with most microcontrollers; supports 16 unique addresses via external ADR resistor (0–150kΩ). |
| Dimming Modes | Independent 8-bit analog + 10-bit PWM per channel - allows simultaneous coarse (analog) and fine (PWM) intensity control without flicker. |
| Charge Pump Modes | Self-adaptive 1x/1.5x/2x - dynamically selects lowest required gain to minimize switching loss and EMI during varying LED VF conditions. |
Pinout & Package
MP3320AGG-Z is housed in a thermally enhanced QFN-14 package (2mm × 2mm, 0.5mm pitch) with exposed thermal pad. Pin 1 is marked by dot; top-side marking includes "LP" product code, year code, and lot number.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SDA | I²C data bidirectional line | Open-drain interface requiring external pull-up; supports standard-mode (400kHz) timing with 50ns data setup and 120ns rise/fall. |
| 2 SCL | I²C clock input | Drives internal state machine; accepts 400kHz clock with 260ns minimum high/low time per cycle. |
| 3 GND | Power and signal reference | Must be connected to low-impedance ground plane; ties thermal pad for optimal heat dissipation (θJC = 16°C/W). |
| 4 LED4 | White LED cathode current sink | Sinks up to 51mA; connects directly to WLED cathode; voltage sensed for open/short protection. |
| 5 LED3 | Blue LED cathode current sink | Sinks up to 51mA; independent enable/disable via CH3EN bit; shares same protection thresholds as LED4. |
| 6 LED2 | Green LED cathode current sink | Sinks up to 51mA; supports phase-shifted PWM relative to other channels to reduce inrush current peaks. |
| 7 LED1 | Red LED cathode current sink | Sinks up to 51mA; configured as channel 1 in register map; rising edge follows LED4–LED3–LED2 sequence when phase shift enabled. |
| 8 OUT | Charge pump regulated output | Supplies boosted voltage to all LED anodes; monitored for OVP at 5.5V; decoupled with ≥4.7µF ceramic capacitor. |
| 9 CP1 | Flying capacitor terminal 1 | Connects to one end of 220nF flying cap (C3); forms part of 1.5x/2x charge pump topology with CN1, CP, CN. |
| 10 CN1 | Flying capacitor terminal 2 | Connects to second end of C3; used in both 1.5x and 2x modes; requires low-ESR ceramic capacitor. |
| 11 CP | Flying capacitor terminal 3 | Connects to one end of second 220nF flying cap (C4); active only in 2x mode with CP1/CN1. |
| 12 CN | Flying capacitor terminal 4 | Connects to second end of C4; completes 2x charge pump loop; must match CP1/CN1 layout symmetry. |
| 13 VIN | Main power input | Accepts 1.8–5.5V; UVLO threshold at 1.8V with 110mV hysteresis; bypassed with 4.7µF near pin. |
| 14 ADR | I²C address configuration | Resistor-to-GND sets A3–A0 bits (0x60–0x6F); floating = 0x6F; 2.2kΩ = 0x61; supports multi-device bus sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Self-adaptive charge pump | Automatically selects 1x/1.5x/2x gain based on minimum LED forward voltage among enabled channels-reduces switching loss by up to 35% vs fixed-ratio pumps. |
| Phase-shifted PWM dimming | Configurable 90°/120°/180° inter-channel delay eliminates simultaneous current surges-cuts audible coil whine and lowers peak input current by 40%. |
| Register-configurable protections | Independent OLP/SLP thresholds and response actions (flag-only, channel disable, or full standby) per channel-enables fail-safe lighting in medical or industrial UIs. |
| Breathing light engine | Hardware-accelerated ramp-up/down timing (STEP_UP/STEP_DOWN registers) with 1ms step resolution-enables smooth LED pulsing without MCU intervention. |
| OTP memory customization | One-time programmable default register values (e.g., pre-set ICHx, PWMx, VOUT[1:0])-reduces firmware initialization overhead in mass production. |
Applications
| Smart Wearable Indicators | RGB Status Lighting |
|---|---|
|
Use Scenario: Fitness tracker displaying battery level, connectivity, and activity alerts using discrete RGBW LEDs. IC Role / Device Role / Timing Role: 4-channel current sink driving R/G/B/W LEDs independently; I²C-controlled dimming and blinking synchronized to user events. Use Value: Phase-shifted PWM eliminates audible noise during rapid blink sequences; self-adaptive charge pump maintains consistent brightness across battery discharge (3.6V → 2.8V). |
Use Scenario: Smart speaker front-panel lighting indicating voice assistant state (idle, listening, processing, error). IC Role / Device Role / Timing Role: RGBW driver executing breathing, color transition, and pattern-based animations via hardware registers. Use Value: Breathing light engine (STEP_UP/STEP_DOWN) enables smooth amplitude ramps without CPU load; 10-bit PWM ensures imperceptible intensity steps. |
| Industrial HMI Panels | Compact Consumer Electronics |
|
Use Scenario: Programmable logic controller (PLC) module with status LEDs for power, I/O faults, and communication activity. IC Role / Device Role / Timing Role: Fault-tolerant LED driver with configurable LED open/short response-disables faulty channel while preserving others. Use Value: Independent OLP/SLP per channel prevents single-LED failure from disabling entire status array; register flags enable diagnostic readback over I²C. |
Use Scenario: Wireless earbud charging case showing battery level and pairing status via embedded RGB LED. IC Role / Device Role / Timing Role: Ultra-small QFN-14 (2mm×2mm) driver enabling minimal PCB footprint; 1.8V start-up supports low-power coin-cell backup. Use Value: 1500nA standby current extends shelf life; 51mA/channel drives high-efficiency micro-LEDs at full brightness from 3.3V rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RGBW LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS31FL3728-QFLS4-TR | 4-channel constant-current driver with 28-step analog + 12-bit PWM; no integrated charge pump-requires ≥5V supply or external boost. | Lacks self-adaptive voltage boosting; suitable only where VIN ≥ LED VF + headroom (e.g., 5V systems), not single-cell battery. | Select when system already provides stable ≥5V rail and higher PWM resolution (12-bit) is prioritized over power efficiency. |
| MAX20050ATP/V+T | 4-channel automotive-grade LED driver with integrated 5.5V boost converter; supports ASIL-B, wider temp range (−40°C to +125°C), but larger 20-pin TQFN. | Designed for automotive cabin lighting; includes watchdog timer, fault reporting via INT pin, and AEC-Q100 qualification. | Select for automotive applications requiring functional safety compliance and extended temperature operation; not cost-optimized for consumer wearables. |
Compared with IS31FL3728-QFLS4-TR and MAX20050ATP/V+T, MP3320AGG-Z uniquely combines self-adaptive charge pumping, ultra-compact QFN-14 packaging, and register-level breathing/lighting control-making it optimal for space-constrained, battery-powered RGBW indicator systems where efficiency and acoustic noise matter.
Availability
MP3320AGG-Z is available at Aetrix Electronics and suitable for wearable device manufacturing, smart consumer electronics design, and industrial HMI panel development requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for MP3320AGG-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 power management ICs, with over two decades of expertise in DC/DC converters, LED drivers, and motor drivers.
The MP3320A belongs to MPS's RGBW LED driver product line, engineered specifically for low-power, multi-color indicator applications in space- and efficiency-constrained portable devices-emphasizing integration, thermal efficiency, and ease of I²C-based lighting control.
FAQ
What is the minimum input voltage required for MP3320AGG-Z to operate?
The MP3320AGG-Z has an under-voltage lockout (UVLO) threshold of 1.8V (rising edge) with 110mV hysteresis. It enters standby mode below 1.69V and resumes operation only after VIN exceeds 1.8V. This enables reliable startup from single-cell lithium-polymer batteries down to 2.8V nominal, even under load-induced droop.
How does the self-adaptive charge pump determine its conversion ratio?
The self-adaptive charge pump monitors the lowest LED forward voltage (VLEDx_MIN) among enabled channels. If VLEDx_MIN falls below 0.3V, it steps up gain (e.g., 1x → 1.5x); if VLEDx_MIN exceeds 0.5×VIN + 0.5V, it steps down. Five consecutive OVP events within 1ms also trigger a downward step-ensuring minimal switching loss without manual configuration.
Can MP3320AGG-Z drive LEDs with different forward voltages simultaneously?
Yes. Each channel operates as an independent current sink with its own VLED sense path. The self-adaptive charge pump regulates VOUT to meet the highest required headroom among enabled channels, while individual current accuracy remains ±0.5mA (±2.5%) at 20mA-even with mismatched red (1.8V) and blue (3.4V) LEDs.
What protection features are register-configurable per channel?
LED open protection (OLP_MD[1:0]) and LED short protection (SLP_MD[1:0]) each offer four response modes: no action, flag-only, channel disable, or full standby entry. Thresholds are also adjustable-SLP[1:0] sets short-detection voltage (2.8–3.2V), while OLP threshold is fixed at 50–110mV.
Is the ADR pin required for basic I²C operation?
No-the ADR pin is optional for address configuration. With ADR floating, the device defaults to I²C address 0x6F. However, connecting an external resistor (e.g., 2.2kΩ to GND) sets address 0x61, enabling multiple MP3320AGG-Z units on the same bus-critical for multi-zone lighting systems.
Does MP3320AGG-Z support hardware blinking without MCU involvement?
Yes. Blinking is fully hardware-managed via FBLK[7:0], DUTYBLK[7:0], and BLK_TIMES[7:0] registers. Once configured, the IC autonomously generates on/off cycles (e.g., 1.9Hz at 10% duty) for up to 255 cycles-or infinitely-without CPU polling or timer interrupts.
What is the thermal performance of the QFN-14 package in continuous operation?
With proper PCB layout (2-layer board, 1-in² copper pour under thermal pad), the MP3320AGG-Z achieves θJA = 80°C/W. At 51mA × 4 channels and 3.7V input, power dissipation is ~1.2W-resulting in ~96°C junction rise above ambient. Derating to 35mA/channel keeps TJ <125°C at TA = 85°C.
MP3320AGG-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 1.8V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 5.5V
- Current - Output / Channel:
- 51mA
- Frequency:
- 1MHz
- Dimming:
- Analog, I2C, PWM
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (2x2)
MP3320AGG-Z FAQ
1.How can I place an order for MP3320AGG-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP3320AGG-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 MP3320AGG-Z reliable?
The price and inventory of MP3320AGG-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP3320AGG-Z is usually 5 days.
3.What payment methods are accepted for MP3320AGG-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3320AGG-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP3320AGG-Z?
MP3320AGG-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP3320AGG-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 MP3320AGG-Z?
For technical support, including MP3320AGG-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3320AGG-Z requirements.
6.How does Aetrix verify that MP3320AGG-Z is sourced from the original manufacturer or authorized distributors?
All MP3320AGG-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 MP3320AGG-Z meets industry standards.
7.What is the process for return or replacement of MP3320AGG-Z?
All MP3320AGG-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP3320AGG-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 MP3320AGG-Z part is unused and in its original packaging.
Return procedure for MP3320AGG-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP3320AGG-Z Tags
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