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Microchip Technology MCP1664T-E/MNYVAO
- Part No.:
- MCP1664T-E/MNYVAO
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MCP1664T-E/MNYVAO.pdf
- Description:
- 32V OUTPUT, 1.8A SWITCH, NON-SYN
- Quantity:
- Payment:
- Shipping:
Inventory:1,615
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Product details
Overview
MCP1664T-E/MNYVAO from Microchip Technology is a fixed-frequency, non-synchronous step-up DC-DC converter optimized for constant-current LED driving, featuring a 36V/400 mΩ integrated low-side NMOS switch, 500 kHz switching frequency, 300 mV feedback reference voltage, and AEC-Q100 qualification for automotive use. It supports 2–3-cell alkaline/NiMH or single-cell Li-Ion inputs to drive up to 10 white LEDs in series for backlighting and flash applications.
For engineers reviewing the MCP1664T-E/MNYVAO datasheet, MCP1664T-E/MNYVAO pinout, MCP1664T-E/MNYVAO application, or MCP1664T-E/MNYVAO equivalent, key selection considerations include input voltage range (2.4V–5.5V), peak inductor current limit (1.8A), open-load protection behavior, UVLO thresholds (2.3V rising / 1.85V falling), and thermal shutdown at 150°C with 20°C hysteresis.
Technical Context
The MCP1664T-E/MNYVAO implements peak current-mode control with internal slope compensation derived from VIN, enabling stable operation across input and load variations. Its error amplifier compares VFB against a 300 mV reference to regulate LED current via an external RSET resistor, while cycle-by-cycle current limiting and overtemperature protection (150°C trip, 130°C restart) ensure robust fault handling.
UVLO prevents startup below 2.3V (rising) and disables operation below 1.85V (falling), supporting two-cell alkaline battery operation down to end-of-life. Open-load protection activates when VFB drops below 50 mV-indicating LED string disconnection or VFB-to-GND short-halting switching to prevent SW node overvoltage and output overvoltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.4V to 5.5V - supports two/three-cell alkaline/NiMH and single-cell Li-Ion batteries without external regulation. |
| Switching Frequency | 500 kHz ±15% - enables compact magnetics and EMI filtering; fixed-frequency simplifies layout and noise management. |
| Feedback Reference Voltage | 300 mV ±25 mV - sets LED current via RSET = 0.3 V / ILED; low reference minimizes power loss in sense resistor. |
| Peak Inductor Current Limit | 1.8A typical - protects integrated 400 mΩ NMOS switch during overload or short-circuit transients. |
| UVLO Thresholds | 2.3V (rising), 1.85V (falling) - provides hysteresis to avoid oscillation near battery depletion; enables reliable two-cell alkaline operation. |
| Shutdown Quiescent Current | 40 nA typical - extends battery life in portable devices by minimizing drain when EN = GND. |
| Max Output Voltage | 32V - supports up to 10 white LEDs (VF ≈ 3.2V each) in series; sufficient for high-brightness backlight and flash strings. |
| Thermal Shutdown | 150°C trip, 20°C hysteresis - automatically disables switching under sustained overload; resumes after die cools to 130°C. |
Pinout & Package
Package: 8-Lead 2 mm × 3 mm TDFN with exposed thermal pad (EP). Thermal resistance θJA = 52.5°C/W enables high-power operation in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch Node | Connects to boost inductor; carries full inductor current; internally tied to NMOS drain; rated for 36V max. |
| VIN | Power Input | Supplies bias and switching power; requires ≥4.7 µF ceramic decoupling close to pin; max 5.5V rating. |
| EN | Enable Control | Logic-level input: >85% VIN enables, <7.5% VIN disables; controls shutdown mode and PWM dimming. |
| VFB | Feedback Sense | Regulates voltage across RSET to 300 mV; cathode of LED string connects here; OLP triggers if VFB < 50 mV. |
| PGND | Power Ground | High-current return path for NMOS switch; must be externally connected to SGND at single point to minimize noise coupling. |
| SGND | Signal Ground | Reference for error amplifier and bandgap; separate from PGND to isolate sensitive analog circuitry from switching noise. |
| NC | No Connect | Pins 4 and 6 are unconnected; must not be soldered or biased. |
| EP | Exposed Thermal Pad | Electrically isolated but thermally critical; must be soldered to PCB ground plane for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 36V/400 mΩ NMOS switch | Eliminates external high-voltage MOSFET; reduces BOM count and board area while maintaining 92% peak efficiency. |
| Open Load Protection (OLP) | Detects VFB < 50 mV (LED disconnect or FB-to-GND short) and halts switching to prevent SW overvoltage and LED damage. |
| Internal compensation network | Removes need for external RC compensation components; simplifies design and improves production consistency. |
| AEC-Q100 qualified | Validated for automotive temperature range (−40°C to +125°C junction); supports infotainment, instrument cluster, and exterior lighting. |
| 1.8A cycle-by-cycle current limiting | Prevents NMOS thermal runaway during transient overloads; maintains safe operation without external current-sense resistors. |
| 40 nA shutdown current | Enables multi-week standby in battery-powered flashlights and medical handhelds without significant capacity loss. |
Applications
| Backlighting for Portable LCDs | Camera Flash Driver |
|---|---|
Use Scenario: Driving 4–6 white LEDs in series for GPS navigation units or portable DVD players powered by two AA alkaline cells. IC Role / Device Role / Timing Role: Constant-current boost regulator providing regulated LED current independent of battery voltage decay. Use Value: Maintains consistent brightness over full battery discharge (2.4V–3.0V input), with UVLO preventing erratic operation below 1.85V. |
Use Scenario: Delivering 300 mA peak current to a single high-intensity white LED in smartphone or action-camera flash modules. IC Role / Device Role / Timing Role: High-efficiency current source enabling fast PWM dimming via EN pin control at up to 100 Hz. Use Value: Achieves linear brightness control with <100 µs start-up time and no external current-sense resistor overhead. |
| Medical Handheld Devices | Automotive Interior Lighting |
Use Scenario: Powering status indicator LEDs and display backlights in portable diagnostic tools operating from Li-Ion batteries (3.6V–4.2V). IC Role / Device Role / Timing Role: LED current regulator with OLP and thermal shutdown ensuring fail-safe behavior in safety-critical environments. Use Value: Prevents hazardous overvoltage on disconnected LEDs and guarantees shutdown at 150°C junction temperature. |
Use Scenario: Driving 8 white LEDs for ambient cabin lighting in automotive applications requiring AEC-Q100 compliance. IC Role / Device Role / Timing Role: Automotive-grade boost LED driver delivering 150 mA at 4.2V input with built-in UVLO and thermal protection. Use Value: Qualified for −40°C to +125°C operation; supports wide input range and eliminates need for external protection ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61165DRVR | Higher 2.2A peak current limit; 1.25V feedback reference; requires external compensation; no OLP. | Lacks open-load protection and AEC-Q100 qualification; better suited for non-automotive, higher-current flash applications. | Select when >300 mA LED current is required and OLP is handled externally; verify thermal design due to higher RDS(on). |
| LT3466EDD-1#TRMPBF | Fixed 1.25V feedback; includes soft-start; 2.5A current limit; no integrated OLP comparator; different UVLO (2.7V/2.5V). | Not AEC-Q100 qualified; requires external current-sense resistor; higher quiescent current (25 µA vs. 40 nA). | Choose for industrial lighting where soft-start is critical and lower shutdown current is not required; validate UVLO compatibility with battery profile. |
Compared with TPS61165DRVR and LT3466EDD-1#TRMPBF, the MCP1664T-E/MNYVAO offers unique integration of OLP, AEC-Q100 qualification, and ultra-low 40 nA shutdown current-making it optimal for automotive and long-life portable LED systems where reliability and battery longevity are primary concerns.
Availability
MCP1664T-E/MNYVAO is available at Aetrix Electronics and suitable for automotive interior lighting, portable medical device backlighting, camera flash modules, and handheld gaming console displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCP1664T-E/MNYVAO 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
Microchip Technology is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog, interface, and power management ICs, with broad automotive, industrial, and consumer market reach.
The MCP1664T-E/MNYVAO belongs to Microchip's high-efficiency LED driver product line, designed specifically for space-constrained, battery-powered applications requiring constant-current regulation, robust protection, and AEC-Q100 compliance.
FAQ
What is the maximum number of white LEDs the MCP1664T-E/MNYVAO can drive?
The MCP1664T-E/MNYVAO supports up to 10 white LEDs in series, limited by its 32V maximum output voltage and typical forward voltage of ~3.2V per LED. At 4.2V input and 8 LEDs, it delivers up to 150 mA; at 5.0V input and 4 LEDs, it sustains 300 mA. The actual count depends on VF variation, ambient temperature, and RSET selection per Equation 5-2 in the datasheet.
How does the MCP1664T-E/MNYVAO implement open-load protection?
The MCP1664T-E/MNYVAO monitors the VFB pin voltage continuously. If VFB drops below 50 mV-indicating either LED string disconnection or VFB shorted to GND-the internal OLP comparator disables PWM switching, halting SW node activity to prevent output overvoltage and potential damage to the IC or external diode. OLP is disabled during startup and thermal shutdown.
Can the MCP1664T-E/MNYVAO be used with a single-cell Li-Ion battery?
Yes, the MCP1664T-E/MNYVAO is explicitly designed for single-cell Li-Ion (3.0V–4.2V) and Li-Polymer inputs. Its 2.4V–5.5V input range, 2.3V UVLO start threshold, and 1.85V UVLO stop threshold ensure stable operation across full battery discharge, including dimming and flash modes without brownout or instability.
What is the purpose of separating SGND and PGND pins on the MCP1664T-E/MNYVAO?
SGND serves as the quiet reference for the error amplifier and bandgap circuitry, while PGND carries high di/dt switching currents from the NMOS switch. Separating them minimizes noise coupling into the feedback path. They must be connected externally at a single point-typically at the input capacitor ground-to maintain accuracy and stability without compromising EMI performance.
Does the MCP1664T-E/MNYVAO require external compensation components?
No, the MCP1664T-E/MNYVAO integrates full compensation circuitry-including error amplifier compensation and slope compensation-eliminating the need for external capacitors or resistors. This reduces bill-of-materials cost, saves PCB area, and ensures consistent loop stability across manufacturing lots and temperature ranges.
MCP1664T-E/MNYVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.4V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 32V
- Current - Output / Channel:
- 300mA
- Frequency:
- 500kHz
- Dimming:
- PWM
- Applications:
- Backlight, Camera Flash
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
MCP1664T-E/MNYVAO FAQ
1.How can I place an order for MCP1664T-E/MNYVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1664T-E/MNYVAO 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 MCP1664T-E/MNYVAO reliable?
The price and inventory of MCP1664T-E/MNYVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1664T-E/MNYVAO is usually 5 days.
3.What payment methods are accepted for MCP1664T-E/MNYVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1664T-E/MNYVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1664T-E/MNYVAO?
MCP1664T-E/MNYVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1664T-E/MNYVAO 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 MCP1664T-E/MNYVAO?
For technical support, including MCP1664T-E/MNYVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1664T-E/MNYVAO requirements.
6.How does Aetrix verify that MCP1664T-E/MNYVAO is sourced from the original manufacturer or authorized distributors?
All MCP1664T-E/MNYVAO 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 MCP1664T-E/MNYVAO meets industry standards.
7.What is the process for return or replacement of MCP1664T-E/MNYVAO?
All MCP1664T-E/MNYVAO units undergo pre-shipment inspection (PSI). If there is an issue with MCP1664T-E/MNYVAO, 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 MCP1664T-E/MNYVAO part is unused and in its original packaging.
Return procedure for MCP1664T-E/MNYVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP1664T-E/MNYVAO Tags
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