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Microchip Technology MCP1602T-180I/MF
- Part No.:
- MCP1602T-180I/MF
- Manufacturer:
- Microchip Technology
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
MCP1602T-180I/MF.pdf
- Description:
- IC REG BUCK 1.8V 500MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,023
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Product details
Overview
MCP1602T-180I/MF from Microchip Technology is a 2.0 MHz, 500 mA synchronous buck regulator with fixed 1.8 V output, power-good monitoring, and automatic PWM-to-PFM mode transition. It operates from 2.7 V to 5.5 V input, delivers up to 500 mA continuous output current, features 45 µA typical quiescent current, and integrates undervoltage lockout (UVLO), overtemperature protection, and cycle-by-cycle overcurrent limiting. It is designed for space-constrained portable electronics powered by single-cell Li-Ion or multi-cell NiMH/NiCd batteries.
For engineers reviewing the MCP1602T-180I/MF datasheet, MCP1602T-180I/MF pinout, MCP1602T-180I/MF application, or MCP1602T-180I/MF equivalent, this page provides verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options - all grounded in Microchip's DS22061A specification and confirmed DFN-8 packaging.
Technical Context
The MCP1602T-180I/MF implements a fully integrated synchronous buck topology with internal P-Channel and N-Channel MOSFETs (RDS(on) = 450 mΩ each), enabling high efficiency (>90% typical) across load ranges. Its dual-mode operation-2.0 MHz fixed-frequency PWM under heavy load and pulse-skipping PFM at light load-minimizes quiescent current without external control.
It includes a precision 0.8 V internal reference, 94% VOUT power-good threshold with 262 ms active timeout and 165 µs falling-edge delay, and robust protection: UVLO (2.55 V typ, 200 mV hysteresis), thermal shutdown (150 °C typ, 10 °C hysteresis), and +700 mA peak current limit. The device is internally compensated and requires no external feedback divider for its fixed 1.8 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2.5%; eliminates need for external resistor divider and reduces BOM count. |
| Max Output Current | 500 mA continuous; supports processor core rails and peripheral supplies in portable systems. |
| Input Voltage Range | 2.7 V to 5.5 V; compatible with 1-cell Li-Ion (2.7–4.2 V), 2/3-cell NiMH/NiCd, and USB 5 V inputs. |
| Switching Frequency | 2.0 MHz (1.6–2.4 MHz range); enables use of small 4.7 µH inductors and low-ESR ceramic capacitors. |
| Quiescent Current | 45 µA typical; extends battery life in always-on or low-power standby modes. |
| Power-Good Delay | 262 ms typical active timeout; ensures stable output before system reset release or enable sequencing. |
| Thermal Shutdown | 150 °C junction temperature; protects against sustained overload or poor PCB thermal design. |
Pinout & Package
The MCP1602T-180I/MF is housed in an 8-pin 3×3 mm DFN package with exposed thermal pad (EP) connected to AGND. This package offers θJA = 60 °C/W on a 4-layer board with vias in the thermal pad, significantly improving thermal performance over the MSOP variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SHDN | Enable/disable logic input | Active-high control: >45% VIN enables regulation; <15% VIN disables output and reduces current to 0.05 µA. |
| 2 VCC | Analog supply rail | Bias source derived from VIN filtering; powers internal reference, error amplifier, and timing circuitry. |
| 3 PG | Open-drain power-good output | Asserts low when VOUT drops below 92% of 1.8 V; 262 ms timeout prevents false resets during transients. |
| 4 AGND | Analog ground reference | Separate ground node for feedback and reference circuits; must be tied to low-noise analog plane. |
| 5 VOUT | Fixed-output voltage node | 1.8 V regulated output; connects directly to load; no external feedback required for this variant. |
| 6 VIN | Main power input | Accepts 2.7–5.5 V; requires local 4.7 µF ceramic decoupling; minimum VIN ≥ VOUT + 0.5 V. |
| 7 LX | Switch node | Connects to inductor; carries high di/dt current; requires short, low-inductance trace to minimize EMI. |
| 8 PGND | Power ground return | High-current return path for LX and internal FETs; must be routed separately from AGND and joined at single point. |
| EP (Exposed Pad) | Thermal and electrical ground | Must be soldered to AGND plane with ≥2 thermal vias; critical for thermal management and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic PWM-to-PFM transition | Enables >90% efficiency across full 0.1–500 mA load range without mode-control firmware or external circuitry. |
| Integrated synchronous MOSFETs | Eliminates external catch diode; reduces conduction loss and improves light-load efficiency vs. asynchronous designs. |
| Internally compensated control loop | Removes need for external compensation network-reduces component count and layout sensitivity. |
| 262 ms power-good timeout | Provides reliable system-level power sequencing for microcontrollers and FPGAs requiring stable VDD before release. |
| Low RDS(on) switches (450 mΩ) | Minimizes conduction loss at full load, supporting 500 mA output with minimal thermal rise in DFN package. |
Applications
| Cellular Telephones | USB-Powered Devices |
|---|---|
Use Scenario: Powering baseband processor core and RF transceiver from single-cell Li-Ion battery (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary 1.8 V synchronous buck regulator delivering regulated core voltage with fast transient response. Use Value: Delivers 500 mA at >90% efficiency across battery discharge curve while maintaining tight output regulation and clean power-good signaling. |
Use Scenario: Converting 5 V USB supply to 1.8 V for microcontroller I/O banks or sensor interface logic. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter providing isolated, low-noise 1.8 V rail independent of host USB voltage variation. Use Value: Enables plug-and-play USB-powered operation with no external feedback components and built-in UVLO for brownout immunity. |
| Digital Cameras | Portable Computers |
Use Scenario: Supplying image sensor digital core and memory interface from 3-cell NiMH pack (3.6–4.5 V). IC Role / Device Role / Timing Role: High-efficiency step-down regulator with precise power-good assertion for sensor initialization sequence. Use Value: Ensures camera startup only after stable 1.8 V rail is established, preventing corrupted frame capture or boot failure. |
Use Scenario: Generating 1.8 V auxiliary rail for SSD controller, display interface, or touch controller in ultra-thin notebooks. IC Role / Device Role / Timing Role: Compact, thermally efficient buck regulator mounted near load to minimize IR drop and noise coupling. Use Value: 3×3 mm DFN package with EP allows placement directly under BGA devices; 60 °C/W θJA sustains full load in constrained thermal environments. |
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 | Fixed 1.8 V, 600 mA, 3 MHz switching frequency, 17 µA quiescent current; requires external soft-start capacitor. | Higher switching frequency enables smaller inductors but increases EMI sensitivity; lower IQ benefits ultra-low-power sleep states. | Preferred where board space is extremely limited and 3 MHz operation is acceptable; not drop-in due to different pinout and soft-start requirement. |
| RT8059GJ6 | Fixed 1.8 V, 600 mA, 2.5 MHz, 25 µA IQ, no power-good output; uses external compensation. | Lacks PG signal and internal compensation-requires additional components for sequencing and stability. | Consider only if power-good monitoring is unnecessary and layout allows for compensation network; not functionally equivalent for reset-critical systems. |
Compared with MCP1602T-180I/MF, TPS62231DRYR offers higher current and lower IQ but adds complexity via external soft-start, while RT8059GJ6 omits both power-good and internal compensation-making MCP1602T-180I/MF the most integrated solution for sequenced, battery-powered 1.8 V rails.
Availability
MCP1602T-180I/MF is available at Aetrix Electronics and suitable for cellular telephones, USB-powered devices, and portable computers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MCP1602T-180I/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 a focus on embedded control and energy-efficient solutions.
The MCP1602 product line delivers highly integrated, low-quiescent-current DC-DC converters for battery-powered portable electronics-designed to maximize runtime while minimizing footprint and external component count.
FAQ
What is the input voltage range supported by the MCP1602T-180I/MF?
The MCP1602T-180I/MF supports an input voltage range of 2.7 V to 5.5 V. This range accommodates single-cell Li-Ion batteries (2.7–4.2 V), 2- or 3-cell NiMH/NiCd packs, and standard 5 V USB sources. The device incorporates undervoltage lockout (UVLO) that disables operation below 2.40 V (min) to prevent unstable regulation, with 200 mV hysteresis ensuring clean turn-on at 2.55 V typical.
Does the MCP1602T-180I/MF require external feedback resistors to set its output voltage?
No, the MCP1602T-180I/MF does not require external feedback resistors. As a fixed-output variant, it delivers a factory-trimmed 1.8 V ±2.5% output directly from the VOUT pin. This eliminates the need for a resistor divider, simplifies layout, reduces BOM count, and improves long-term stability-unlike adjustable versions of the MCP1602 which rely on external VFB networks.
How does the power-good (PG) function operate in the MCP1602T-180I/MF?
The MCP1602T-180I/MF features an open-drain power-good output that asserts high when VOUT reaches ≥94% of 1.8 V (≥1.692 V) and remains asserted for a guaranteed 140–560 ms timeout. It deasserts low when VOUT falls below 92% (≤1.656 V), with 165 µs detection delay to reject noise. This behavior enables reliable system reset sequencing and is fully integrated-no external comparators or timers needed.
What package type is used for the MCP1602T-180I/MF, and how is thermal management handled?
The MCP1602T-180I/MF uses the 8-pin 3×3 mm DFN package (MCP1602T-xxxI/MF suffix), featuring an exposed thermal pad (EP) electrically connected to AGND. For optimal thermal performance, the EP must be soldered to a dedicated AGND copper area with ≥2 thermal vias. This configuration achieves θJA = 60 °C/W on a 4-layer board-significantly better than the MSOP variant's 211 °C/W-and sustains full 500 mA load without exceeding 125 °C junction temperature.
Can the MCP1602T-180I/MF operate efficiently at very light loads, such as in standby mode?
Yes, the MCP1602T-180I/MF maintains high efficiency at light loads via automatic transition from PWM to PFM mode. At sub-10 mA loads, it enters pulse-skipping PFM operation, reducing quiescent current to 45 µA typical (0.05 µA in shutdown). This behavior-enabled without external control-extends battery life in standby or sleep states while preserving fast wake-up response and output regulation accuracy.
MCP1602T-180I/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):
- 1.8V
- 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-180I/MF FAQ
1.How can I place an order for MCP1602T-180I/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1602T-180I/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-180I/MF reliable?
The price and inventory of MCP1602T-180I/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-180I/MF is usually 5 days.
3.What payment methods are accepted for MCP1602T-180I/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1602T-180I/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1602T-180I/MF?
MCP1602T-180I/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1602T-180I/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-180I/MF?
For technical support, including MCP1602T-180I/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1602T-180I/MF requirements.
6.How does Aetrix verify that MCP1602T-180I/MF is sourced from the original manufacturer or authorized distributors?
All MCP1602T-180I/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-180I/MF meets industry standards.
7.What is the process for return or replacement of MCP1602T-180I/MF?
All MCP1602T-180I/MF units undergo pre-shipment inspection (PSI). If there is an issue with MCP1602T-180I/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-180I/MF part is unused and in its original packaging.
Return procedure for MCP1602T-180I/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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