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Microchip Technology MCP1602T-330I/MF
- Part No.:
- MCP1602T-330I/MF
- Manufacturer:
- Microchip Technology
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
MCP1602T-330I/MF.pdf
- Description:
- IC REG BUCK 3.3V 500MA 8DFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCP1602T-330I/MF from Microchip Technology is a fixed-output 3.3V, 500 mA synchronous buck DC-DC regulator in an 8-lead 3×3 mm DFN package, featuring 2.0 MHz PWM switching, 90% typical efficiency, 45 µA quiescent current, and integrated power-good monitoring with 262 ms delay-designed for Li-Ion–powered portable electronics requiring stable low-noise 3.3V rail generation.
For engineers reviewing the MCP1602T-330I/MF datasheet, MCP1602T-330I/MF pinout, MCP1602T-330I/MF application, or MCP1602T-330I/MF equivalent, this page delivers verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options for battery-powered embedded systems where input voltage ranges from 2.7V to 5.5V and load currents reach 500 mA.
Technical Context
The MCP1602T-330I/MF operates in automatic PWM-to-PFM mode transition: at heavy loads (>100 mA), it runs at a fixed 2.0 MHz (±0.4 MHz) PWM frequency with cycle-by-cycle overcurrent protection (700 mA peak limit); at light loads, it enters PFM mode to maintain ultra-low 45 µA quiescent current while sustaining regulation.
Its integrated synchronous rectification uses internal P- and N-channel MOSFETs (RDS(on) = 450 mΩ each), eliminating external diode losses. The 0.8V internal reference feeds a fixed 3.3V output via internal resistor divider, and the open-drain PG pin asserts after 262 ms when VOUT reaches ≥94% of 3.3V, with 2% hysteresis and 165 µs falling-edge delay for noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2.5% - eliminates need for external feedback resistors and compensation network |
| Max Output Current | 500 mA continuous - supports processor core rails and USB-peripheral interfaces without external current boosting |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-Ion (fully charged to 4.2V), 2–3 cell NiMH/NiCd, and USB 5V sources |
| Switching Frequency | 2.0 MHz (typical), 1.6–2.4 MHz (min–max) - enables use of compact 4.7 µH inductors and ceramic capacitors ≤10 µF |
| Quiescent Current | 45 µA (typical) - extends battery runtime in standby modes of handheld devices and always-on sensors |
| Power-Good Delay | 262 ms (typical) - ensures system reset controllers receive stable 3.3V before releasing reset, preventing brown-out boot failures |
| Thermal Shutdown | 150°C (typical), 10°C hysteresis - protects against sustained overload or poor PCB thermal design in sealed enclosures |
| UVLO Threshold | 2.55V (typical), 200 mV hysteresis - prevents erratic startup during battery discharge below 2.7V nominal |
Pinout & Package
Package: 8-lead 3×3 mm DFN with exposed thermal pad (EP), rated θJA = 60°C/W on 4-layer board with 2 vias to AGND plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SHDN | Enable control input | Logic-high (>45% VIN) enables regulator; logic-low (<15% VIN) disables with 0.05 µA shutdown current |
| 2 VCC | Analog bias supply | Internally filtered VIN rail powering error amplifier, oscillator, and PG circuitry-must be decoupled with 0.1 µF ceramic |
| 3 PG | Open-drain power-good output | Sinks up to 1.2 mA when active; requires external pull-up to VOUT or higher rail; asserts after 262 ms at ≥3.102V (94% of 3.3V) |
| 4 AGND | Analog ground reference | Separate ground node for feedback path and internal analog blocks-must connect to quiet analog ground plane, not PGND |
| 5 VOUT | Fixed 3.3V output sense | Connects directly to output capacitor; internal divider sets 3.3V-no external resistors required |
| 6 VIN | Main power input | Accepts 2.7–5.5V; requires ≥4.7 µF low-ESR ceramic input capacitor placed within 3 mm of pin |
| 7 LX | Switch node | Drives external 4.7 µH inductor; carries high di/dt current-requires shortest possible trace to minimize EMI and voltage spikes |
| 8 PGND | Power ground return | High-current return path for LX and internal MOSFETs-must tie to solid copper pour under DFN thermal pad with ≥2 thermal vias |
| EP | Exposed thermal pad | Electrically connected to AGND; mandatory connection to inner-layer AGND plane via ≥4 thermal vias for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Automatic PWM/PFM mode transition | Enables >90% efficiency across 0.1–500 mA load range without external control or mode-selection pins |
| Internally compensated architecture | Eliminates need for external compensation components-reduces BOM count and layout sensitivity for 3.3V fixed-output use |
| Synchronous rectification | Integrated P- and N-MOSFETs (450 mΩ RDS(on)) replace lossy Schottky diode-enables >90% efficiency at 3.3V/500mA with 3.6V input |
| Undervoltage lockout with hysteresis | 2.55V turn-on threshold with 200 mV hysteresis prevents oscillatory startup during battery sag or input ripple |
| Overtemperature and overcurrent protection | 150°C thermal shutdown with 10°C hysteresis and 700 mA cycle-by-cycle current limiting ensure robustness under fault conditions |
| Low-noise 2.0 MHz operation | Fixed-frequency PWM minimizes EMI in sensitive RF sections and allows small LC filter sizing (e.g., 4.7 µH + 4.7 µF) |
Applications
| Portable Medical Sensors | USB-Powered Peripherals |
|---|---|
Use Scenario: Wearable glucose monitor powered by single-cell Li-Ion battery with intermittent Bluetooth LE transmission. IC Role / Device Role / Timing Role: Primary 3.3V power rail generator for MCU, sensor interface, and BLE radio-provides regulated output during 2.8–4.2V battery discharge. Use Value: 45 µA quiescent current extends 7-day battery life; 262 ms PG delay ensures reliable MCU boot after battery insertion or wake-up. |
Use Scenario: USB-C audio adapter drawing power from host port while delivering clean 3.3V to DAC and headphone amp. IC Role / Device Role / Timing Role: Input-voltage tolerant buck converter accepting 4.75–5.25V USB bus and regulating to precise 3.3V with <15 mV ripple. Use Value: 2.0 MHz switching avoids interference with 2.4 GHz Bluetooth band; fixed 3.3V output eliminates calibration drift from resistor tolerance. |
| Industrial Handheld Terminals | Smart IoT Edge Nodes |
Use Scenario: Rugged barcode scanner operating from 3×NiMH batteries (3.6–4.5V) with backlight, imager, and wireless module. IC Role / Device Role / Timing Role: Main system rail supplying 500 mA peak to imager flash and 2.4 GHz transceiver during data upload. Use Value: 500 mA capability supports simultaneous high-current loads; UVLO hysteresis prevents reset glitches during motor-induced line sag. |
Use Scenario: Battery-operated environmental sensor node transmitting temperature/humidity via LoRaWAN every 10 minutes. IC Role / Device Role / Timing Role: Always-on 3.3V supply for ultra-low-power MCU and LoRa transceiver-active only during brief transmit bursts. Use Value: PFM mode reduces average current to <1 µA during sleep; PG signal triggers MCU wake-up only after full rail stabilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3.3V fixed, 400 mA max, 3.8 MHz switching, 17 µA IQ, no PG output | Lacks power-good signaling and 500 mA headroom-unsuitable for systems requiring reset coordination or 450+ mA peak loads | Select only if PG is unused and peak load stays ≤400 mA; higher frequency allows smaller inductors but increases EMI risk near RF bands |
| RT8059NGQW | 3.3V fixed, 600 mA max, 1.5 MHz switching, 30 µA IQ, open-drain PG with 200 ms delay | Lower switching frequency requires larger inductors; PG delay differs by 62 ms-may affect timing-critical reset sequencing | Prefer when higher current margin is needed and 1.5 MHz operation is acceptable; verify 200 ms PG delay aligns with host controller requirements |
Compared with TPS62231DRYR and RT8059NGQW, the MCP1602T-330I/MF uniquely balances 500 mA capability, 262 ms PG timing, and 2.0 MHz operation-making it optimal for portable systems needing coordinated reset, moderate current, and compact magnetics without sacrificing noise performance.
Availability
MCP1602T-330I/MF is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered peripherals, industrial handheld terminals, smart IoT edge nodes, and battery-backed instrumentation requiring stable component supply across production lifecycles.
Supply support for MCP1602T-330I/MF 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 company specializing in microcontrollers, analog devices, and power management ICs, with emphasis on reliability, longevity, and embedded-system integration.
The MCP1602 product line delivers highly integrated, low-quiescent-current DC-DC regulators for space-constrained, battery-powered applications-designed specifically for portable electronics requiring efficient, fixed-output voltage conversion from 2.7–5.5V sources.
FAQ
What is the input voltage range supported by the MCP1602T-330I/MF?
The MCP1602T-330I/MF supports an input voltage range of 2.7V to 5.5V. This range accommodates single-cell Li-Ion batteries (2.8V–4.2V), 2- or 3-cell NiMH/NiCd packs, and standard USB 5V supplies. Operation below 2.7V is blocked by undervoltage lockout (UVLO), which activates at 2.55V typical with 200 mV hysteresis to prevent unstable startup.
Does the MCP1602T-330I/MF require external compensation components?
No, the MCP1602T-330I/MF is internally compensated. Its fixed 3.3V output version does not require external feedback resistors or compensation networks-only input/output capacitors and an inductor are needed. This simplifies design, reduces BOM count, and improves layout robustness compared to adjustable regulators.
How does the power-good (PG) function operate on the MCP1602T-330I/MF?
The MCP1602T-330I/MF provides an open-drain PG output that asserts low after a 262 ms delay once VOUT rises above 94% of 3.3V (≥3.102V). It deasserts when VOUT falls below 92% (≤3.036V), with 165 µs propagation delay and 2% hysteresis. An external pull-up resistor is required to interface with MCU reset inputs or sequencer logic.
What thermal considerations apply to the MCP1602T-330I/MF in its DFN package?
The MCP1602T-330I/MF in the 3×3 mm DFN package has a junction-to-ambient thermal resistance (θJA) of 60°C/W on a 4-layer PCB with two thermal vias to AGND. To maintain TJ ≤125°C at 500 mA output, ambient must stay ≤65°C with proper thermal pad connection. The device includes thermal shutdown at 150°C with 10°C hysteresis for fault protection.
Can the MCP1602T-330I/MF be used with ceramic output capacitors?
Yes, the MCP1602T-330I/MF is fully compatible with ceramic output capacitors. The datasheet recommends ≥4.7 µF X5R or X7R types with low ESR. Ceramic caps enable fast transient response and low output ripple (typically 10–15 mV), especially critical in noise-sensitive applications like RF modules or precision ADCs powered from the MCP1602T-330I/MF rail.
MCP1602T-330I/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
MCP1602T-330I/MF FAQ
1.How can I place an order for MCP1602T-330I/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1602T-330I/MF 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 MCP1602T-330I/MF reliable?
The price and inventory of MCP1602T-330I/MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1602T-330I/MF is usually 5 days.
3.What payment methods are accepted for MCP1602T-330I/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1602T-330I/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1602T-330I/MF?
MCP1602T-330I/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1602T-330I/MF 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 MCP1602T-330I/MF?
For technical support, including MCP1602T-330I/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1602T-330I/MF requirements.
6.How does Aetrix verify that MCP1602T-330I/MF is sourced from the original manufacturer or authorized distributors?
All MCP1602T-330I/MF 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 MCP1602T-330I/MF meets industry standards.
7.What is the process for return or replacement of MCP1602T-330I/MF?
All MCP1602T-330I/MF units undergo pre-shipment inspection (PSI). If there is an issue with MCP1602T-330I/MF, 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 MCP1602T-330I/MF part is unused and in its original packaging.
Return procedure for MCP1602T-330I/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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