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Monolithic Power Systems Inc. MP3332GC-Z
- Part No.:
- MP3332GC-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 16-UFBGA, WLCSP
- Datasheet:
-
MP3332GC-Z.pdf
- Description:
- IC LED DRV RGLTR PWM 16WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,954
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Product details
Overview
MP3332GC-Z from Monolithic Power Systems is a dual-channel flash LED driver IC for smartphone and tablet camera systems, delivering 1.5A per channel with ±7% current accuracy, 1–4MHz selectable switching frequency, I²C interface (400kHz), and integrated thermal/NTC/short/open/overvoltage protection in a WLCSP-16 (1.7mm×1.7mm) package.
For engineers reviewing the MP3332GC-Z datasheet, MP3332GC-Z pinout, MP3332GC-Z application, or MP3332GC-Z equivalent, key selection considerations include dual-channel flash/torch/indicator mode support, ground-referenced LED cathodes for thermal layout, programmable input current limit (1–4.2A), adaptive load balancing (±10% current adjustment), and pre-flash low-battery compensation via IFL_MIN register readback.
Technical Context
The MP3332GC-Z integrates a synchronous boost converter with selectable 1/2/3/4MHz switching frequency and foldback to 100kHz under high headroom conditions, enabling compact inductor selection and EMI optimization. Its dual independent current sources support simultaneous flash (1.5A/ch), torch (500mA/ch), and indicator (31.5kHz PWM) operation with hardware- or software-triggered strobe control via STR/TX/TOR pins.
Operation modes are configured via I²C registers including LED_MOD (00–11), STR_MOD/STR_LV for edge/level triggering, FL_TIM for flash timeout, and BAL_ON for forward-voltage balancing between LED1/LED2. Protection logic includes adaptive thermal shutdown (130°C/150°C), NTC-based hot-LED detection (0.6–1.02V threshold), and fault-bit latching (FT_TO, FT_IDC, FT_VBATL) requiring explicit register readback to clear.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.7V–5.5V - supports single-cell Li-ion battery operation with UVLO at 2.5V rising edge. |
| Flash current accuracy | ±7% - ensures consistent brightness across dual LEDs without external calibration. |
| Switching frequency | 1/2/3/4MHz selectable - enables PCB space reduction via smaller inductors (e.g., 1.2µH typical). |
| I²C interface speed | 400kHz - compatible with standard microcontroller I²C peripherals for real-time mode reconfiguration. |
| Thermal protection | 130°C adaptive / 150°C hard shutdown - prevents thermal runaway during sustained torch mode or high-ambient operation. |
| LED load balancing | ±10% current adjustment - reduces efficiency loss from VF mismatch between parallel LEDs. |
| Input current limit | Programmable 1A–4.2A - prevents battery overcurrent during flash bursts while maintaining system stability. |
Pinout & Package
MP3332GC-Z uses a WLCSP-16 (1.7mm × 1.7mm) package with 0.4mm pitch, optimized for ultra-thin mobile camera modules. Ground-referenced LED cathodes (LED1/LED2 anode outputs) simplify thermal layout and reduce parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | LED1 anode output | Current source for first flash LED; referenced to GND for direct cathode grounding. |
| B1 | LED2 anode output | Independent current source for second flash LED; enables stereo illumination or dual-camera sync. |
| A2/B2 | OUT | Boost converter output node; supplies regulated voltage to LED current sources. |
| A3/B3 | SW | Internal switch node connecting inductor to synchronous rectifier; requires low-ESR ceramic capacitor. |
| A4/B4 & C4 | PGND / VSS | Separate power and analog grounds - critical for noise isolation in high-current switching paths. |
| C1 | TOR | Torch mode enable input; high-level active triggers assist/torch current ramp-up with configurable slew rate. |
| C2 | TX | RF synchronization input; forces immediate current reduction to ITX if asserted during flash. |
| C3 | STR | Strobe trigger input; initiates flash pulse in hardware-triggered modes (edge or level sensitive). |
| D1 | NTC | NTC bias terminal; sources 35µA for temperature monitoring - float when unused. |
| D2/D3 | SDA/SCL | I²C bidirectional data/clock lines - require pull-ups to VIN for proper communication timing. |
| D4 | IN | Main power input; bypassed locally with ≥1µF ceramic capacitor to suppress supply ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent current sources | 1.5A/ch flash + 500mA/ch torch with separate I²C registers (I1_FL/I2_FL, I1_TOR/I2_TOR) for asymmetric tuning. |
| Pre-flash low-battery compensation | IFL_MIN register reports minimum achieved flash current during voltage sag - enables firmware to adjust next flash setting. |
| Hardware/software flash triggering | Three modes: hardware level/edge (STR), software edge (I²C command), and torch-to-flash transition - supports flexible camera HAL integration. |
| VF load balancing | Automatic 10% current redistribution between LED1/LED2 when |VLED1−VLED2| > 125mV - improves optical uniformity without external matching. |
| 5V DC output mode | Fixed 5V regulator output (VOUT_5V = 5V) - powers external circuits while disabling LED current sources to avoid thermal conflict. |
Applications
| Smartphone Dual-LED Flash | Tablet Camera Assist Light |
|---|---|
Use Scenario: High-resolution still capture in low-light environments using synchronized dual-LED burst illumination. IC Role / Device Role / Timing Role: Dual-channel flash driver with hardware-triggered STR input and 1.5A/ch current regulation; provides sub-1µs current ramp-up for precise exposure timing. Use Value: Enables consistent color temperature and intensity across dual LEDs via VF balancing, reducing post-processing correction needs. | Use Scenario: Continuous low-power illumination for video recording or autofocus assistance in tablets. IC Role / Device Role / Timing Role: Torch mode controller with 500mA/ch programmable current and 31.5kHz PWM dimming; supports blink timing (128/256/512ms) for status indication. Use Value: Delivers stable assist light without audible coil whine due to high-frequency switching (≥1MHz) and synchronous rectification. |
| Digital Still Camera Indicator | Mobile Camera Pre-Flash Calibration |
Use Scenario: Battery-status or connection-indicator lighting on compact digital cameras. IC Role / Device Role / Timing Role: Indicator mode driver operating at 31.5kHz PWM with 2/16–5/16 duty cycle and programmable blink intervals. Use Value: Provides visible, non-distracting status feedback using same IC as flash function - eliminates need for separate LED driver. | Use Scenario: Real-time battery health assessment prior to main flash activation in smartphone cameras. IC Role / Device Role / Timing Role: Pre-flash current monitor that reads IFL_MIN register after voltage-sag event to determine safe main-flash current. Use Value: Prevents inconsistent flash output by dynamically scaling main flash current based on measured battery ESR and voltage drop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel flash LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP3336A | Successor with improved efficiency, lower quiescent current (8µA vs 15µA), and extended input range (2.5V–5.5V). | Same pinout and register map; supports identical flash/torch/indicator modes with enhanced thermal performance. | Select MP3336A for new designs requiring longer battery life and higher ambient temperature tolerance. |
| RT8547 | Single-channel 1.5A flash driver with 2.7V–5.5V input; lacks dual-channel independence and NTC/IFL_MIN features. | Requires two ICs for dual-LED operation; no built-in load balancing or pre-flash compensation. | Use only when dual-channel synchronization is unnecessary and board area permits duplication. |
Compared with MP3332GC-Z, MP3336A offers direct pin/register compatibility with measurable gains in standby current and thermal margin, while RT8547 necessitates design duplication and forfeits key diagnostics like IFL_MIN reporting and adaptive load balancing - making MP3332GC-Z optimal for space-constrained dual-LED systems requiring robust battery-aware flash control.
Availability
MP3332GC-Z is available at Aetrix Electronics and suitable for smartphone camera modules, tablet imaging subsystems, and digital still camera flash systems requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP3332GC-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 applications.
The MP3332 belongs to MPS's mobile LED driver product line, designed specifically for high-efficiency, thermally optimized flash illumination in space-constrained portable devices with stringent battery-life requirements.
FAQ
What is the purpose of the TX pin on MP3332GC-Z?
The TX pin synchronizes flash operation with RF transmission events. When asserted high during flash mode, it forces immediate current reduction to the ITX-configured value within 5µs to prevent RF interference, and sets the FT_TX fault bit until cleared via I²C register readback.
How does the MP3332GC-Z handle mismatched LED forward voltages?
It implements automatic load balancing by adjusting LED1/LED2 currents up to ±10% when |VLED1−VLED2| exceeds 125mV. This occurs only when BAL_ON=1 and maintains efficiency without requiring matched LED bins or external circuitry.
Can MP3332GC-Z operate in 5V DC output mode while driving LEDs?
No - 5V DC mode disables LED current sources. The IC configures its internal regulator to deliver fixed 5V at OUT, intended for powering auxiliary circuits. Driving LEDs simultaneously would cause thermal conflict and is prohibited by design.
What happens when the input voltage drops below the low-battery threshold during flash?
The IC reduces flash current stepwise until battery voltage recovers to the VBL_RUN threshold. The minimum achieved current is stored in the IFL_MIN register, enabling firmware to scale subsequent flash settings and ensure consistent illumination.
Is MP3332GC-Z pin-compatible with MP3336A?
Yes - MP3336A is a direct replacement with identical WLCSP-16 footprint, pin functions, and I²C register map. It adds enhanced features (lower IQ, wider VIN) without requiring PCB or firmware changes.
How is thermal protection implemented in MP3332GC-Z?
Two-tier thermal response: adaptive shutdown at 130°C (reversible upon cooling) and hard shutdown at 150°C. Both trigger mode reset and set FT_OTP; recovery requires either temperature drop below threshold or power cycle.
What is the function of the STR pin in hardware edge-triggered flash mode?
In STR_MOD=1 and STR_LV=0 configuration, a rising edge on STR initiates flash current ramp-up, and the pulse duration is determined solely by the FL_TIM register - eliminating dependency on external signal hold time for precise exposure control.
MP3332GC-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- DC DC Regulator
- Topology:
- Boost
- Internal Switch(s):
- Yes
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 5V
- Current - Output / Channel:
- 1.5A
- Frequency:
- 1MHz
- Dimming:
- PWM
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLCSP (1.7x1.7)
MP3332GC-Z FAQ
1.How can I place an order for MP3332GC-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP3332GC-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 MP3332GC-Z reliable?
The price and inventory of MP3332GC-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP3332GC-Z is usually 5 days.
3.What payment methods are accepted for MP3332GC-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3332GC-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP3332GC-Z?
MP3332GC-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP3332GC-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 MP3332GC-Z?
For technical support, including MP3332GC-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3332GC-Z requirements.
6.How does Aetrix verify that MP3332GC-Z is sourced from the original manufacturer or authorized distributors?
All MP3332GC-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 MP3332GC-Z meets industry standards.
7.What is the process for return or replacement of MP3332GC-Z?
All MP3332GC-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP3332GC-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 MP3332GC-Z part is unused and in its original packaging.
Return procedure for MP3332GC-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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