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Microchip Technology MCP1602T-180I/MS
- Part No.:
- MCP1602T-180I/MS
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP1602T-180I/MS.pdf
- Description:
- IC REG BUCK 1.8V 500MA 8MSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCP1602T-180I/MS from Microchip Technology is a fixed-output 1.8 V, 500 mA synchronous buck DC-DC regulator in an 8-lead MSOP package, featuring 2.0 MHz PWM switching, power-good monitoring with 262 ms delay, and automatic PWM-to-PFM mode transition for high efficiency across load range. It operates from 2.7V–5.5V input and targets battery-powered portable electronics requiring stable low-voltage rail generation.
For engineers reviewing the MCP1602T-180I/MS datasheet, MCP1602T-180I/MS pinout, MCP1602T-180I/MS application, or MCP1602T-180I/MS equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-chain support details specific to this fixed 1.8 V variant in MSOP-8 packaging.
Technical Context
The MCP1602T-180I/MS integrates synchronous P-channel and N-channel MOSFETs, enabling continuous 500 mA output without external switches. Its dual-mode operation-2.0 MHz fixed-frequency PWM under heavy load and pulse-skipping PFM at light loads-maintains >90% typical efficiency across 0.1–500 mA output current while minimizing quiescent current to 45 µA.
It incorporates a precision 0.8 V internal reference, undervoltage lockout (2.55 V typical threshold with 200 mV hysteresis), overtemperature shutdown (150 °C trip), cycle-by-cycle overcurrent protection (700 mA peak limit), and open-drain power-good output with 94% VOUT high-threshold and 262 ms active timeout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2.5% - eliminates need for external feedback divider; ensures stable core voltage for 1.8 V logic and processors. |
| Max Output Current | 500 mA continuous - supports moderate-power peripherals such as USB PHYs, display drivers, or sensor hubs without thermal derating on standard PCBs. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V), two/three-cell NiMH/NiCd (2.4–4.5 V), and USB 5 V bus with dropout margin. |
| Switching Frequency | 2.0 MHz (typical) - enables use of compact 4.7 µH inductors and 4.7 µF ceramic capacitors; reduces EMI filtering footprint. |
| Quiescent Current | 45 µA (typical) - extends battery life in standby modes; critical for always-on subsystems in portable devices. |
| Power-Good Delay | 262 ms (typical) - provides reliable system reset timing after power stabilization; avoids premature processor wake-up during rail ramp-up. |
| Thermal Protection | 150 °C shutdown with 10 °C hysteresis - prevents permanent damage during sustained overload or poor heatsinking in confined enclosures. |
Pinout & Package
Package: 8-lead MSOP (3.0 mm × 4.9 mm × 1.1 mm), surface-mount, exposed pad not present (DFN variant has EP; MSOP does not).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Enable/disable control input | Logic-high (>45% VIN) enables regulation; logic-low (<15% VIN) disables output and reduces current draw to 0.05 µA. |
| 2 - VCC | Analog bias supply | Internally derived from VIN; powers internal reference, error amplifier, and control logic-requires local 0.1 µF bypass. |
| 3 - PG | Open-drain power-good indicator | Sinks current when VOUT ≥ 94% of 1.8 V; delays activation by 262 ms to confirm stable regulation before signaling host controller. |
| 4 - AGND | Analog ground reference | Separate ground return for feedback and reference circuitry; must be tied to quiet analog ground plane to minimize noise coupling. |
| 5 - VOUT | Fixed-output voltage node | Direct connection to regulated 1.8 V output; no external resistor divider required-simplifies layout and improves accuracy vs. adjustable variants. |
| 6 - VIN | Main power input | Accepts 2.7–5.5 V; requires 4.7 µF low-ESR ceramic capacitor placed within 3 mm of pin to suppress switching transients. |
| 7 - LX | Switch node | Connects directly to inductor; carries high di/dt square-wave current-requires short, wide trace and minimized loop area to reduce EMI. |
| 8 - PGND | Power ground return | High-current return path for LX and internal MOSFETs; must be routed separately from AGND and joined at single point near input capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic PWM-to-PFM transition | Enables >90% efficiency at full load and maintains 85%+ efficiency down to 1 mA-eliminates manual mode selection and optimizes battery runtime across dynamic usage. |
| Internally compensated control loop | Removes need for external compensation network-reduces BOM count and layout sensitivity; supports stable operation with standard 4.7 µH/4.7 µF LC filter. |
| Integrated synchronous MOSFETs | P-channel (450 mΩ RDS(on)) + N-channel (450 mΩ RDS(on)) eliminate external diode losses-improves thermal performance and simplifies bill-of-materials. |
| Power-good with built-in delay | 262 ms timeout ensures microcontroller or FPGA receives clean, debounced "power OK" signal-prevents false resets during brown-out recovery. |
| Robust protection suite | UVLO (2.55 V), overtemperature (150 °C), and cycle-by-cycle overcurrent (700 mA) operate independently-guarantees safe fault response without external supervision circuitry. |
Applications
| Portable Medical Sensors | Digital Camera Core Supply |
|---|---|
|
Use Scenario: Powering ultra-low-power glucose monitors or pulse oximeters powered by coin-cell or single Li-ion batteries. IC Role / Device Role / Timing Role: Primary 1.8 V core regulator delivering clean, efficient power to MCU and analog front-end during intermittent sensing bursts. Use Value: 45 µA quiescent current extends battery life beyond 6 months; 262 ms PG delay synchronizes MCU wake-up with stable rail, eliminating firmware-level polling. |
Use Scenario: Supplying image sensor and ISP logic in compact digital cameras with USB or battery input. IC Role / Device Role / Timing Role: Fixed 1.8 V rail generator handling fast load transients during image capture and burst readout. Use Value: 2.0 MHz switching enables small 3.3 µH inductor; 500 mA capability supports simultaneous sensor + memory + interface operation without voltage droop. |
| USB-Powered Peripherals | Industrial Handheld Terminals |
|
Use Scenario: Providing regulated 1.8 V to Bluetooth/Wi-Fi modules and touch controllers in USB bus-powered dongles. IC Role / Device Role / Timing Role: Input-conditioned buck converter accepting 4.75–5.25 V USB input and rejecting noise from shared upstream port. Use Value: UVLO (2.55 V) prevents erratic behavior during USB hot-plug; PFM mode draws <100 µA at idle-meets USB suspend current limits. |
Use Scenario: Powering ARM Cortex-M based terminals operating in -40°C to +85°C industrial environments with 3-cell NiMH input. IC Role / Device Role / Timing Role: Main system regulator ensuring 1.8 V stability across temperature and battery discharge curve (2.4–4.5 V). Use Value: 150 °C thermal shutdown protects against enclosure overheating; 2.7–5.5 V input range accommodates full NiMH discharge without brownout. |
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, 400 mA, 3.6 MHz switching, 17 µA IQ - higher frequency but lower current rating and no PG output. | Lacks power-good signal; unsuitable where system reset coordination is required; better for space-constrained, low-IQ apps without sequencing needs. | Select only if PG is unnecessary and board area is critical; verify 400 mA suffices for peak load. |
| RT8059GJ6 | Fixed 1.8 V, 600 mA, 1.5 MHz, 30 µA IQ, open-drain PG - higher current but slower switching and different thermal resistance (θJA = 120 °C/W in SOT-23-6). | Higher output current supports heavier loads; SOT-23-6 package offers lower cost but poorer thermal performance than MSOP-8. | Prefer for cost-sensitive, thermally tolerant designs needing >500 mA; validate thermal rise on target PCB. |
Compared with MCP1602T-180I/MS, TPS62231DRYR trades PG functionality and 500 mA capability for smaller size and lower IQ, while RT8059GJ6 offers higher current in a thermally inferior package-making MCP1602T-180I/MS optimal for PG-dependent, medium-load industrial portable designs requiring proven MSOP thermal reliability.
Availability
MCP1602T-180I/MS is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered peripherals, digital camera core supplies, and industrial handheld terminals requiring stable component supply with guaranteed long-term sourcing.
Supply support for MCP1602T-180I/MS 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 devices, and power management ICs, with broad automotive, industrial, and consumer certifications.
The MCP1602 product line delivers highly integrated, low-quiescent-current synchronous buck regulators optimized for battery-powered portable equipment-designed to replace discrete DC-DC solutions with minimal external components and robust protection.
FAQ
What is the input voltage range supported by the MCP1602T-180I/MS?
The MCP1602T-180I/MS supports an input voltage range of 2.7 V to 5.5 V. This allows direct compatibility with single-cell Li-ion batteries (nominal 3.7 V, 2.7–4.2 V range), two- or three-cell NiMH/NiCd packs, and standard USB 5 V sources. The device includes undervoltage lockout that disables operation below ~2.55 V to prevent unstable regulation.
Does the MCP1602T-180I/MS require external compensation components?
No, the MCP1602T-180I/MS is internally compensated. It is designed to operate stably with standard external components: a 4.7 µH inductor and 4.7 µF input/output ceramic capacitors. No external RC compensation network is needed-unlike adjustable variants, the fixed 1.8 V version uses factory-trimmed internal compensation for guaranteed phase margin.
How does the power-good (PG) output behave during startup and fault conditions?
The MCP1602T-180I/MS PG pin is an open-drain output that remains low until VOUT reaches ≥94% of 1.8 V (≥1.7 V), then asserts high after a 262 ms timeout. If VOUT falls below 92% (≤1.66 V), PG pulls low within 165 µs. During UVLO, thermal shutdown, or overcurrent events, PG goes low immediately-providing unambiguous system-level fault indication.
Can the MCP1602T-180I/MS be used in designs requiring operation below -40°C?
No-the MCP1602T-180I/MS is specified for operation from -40°C to +85°C ambient temperature. While it may function outside this range, electrical parameters-including PG threshold accuracy, oscillator frequency, and current limit-are not characterized or guaranteed below -40°C. For extended temperature applications, consult Microchip's automotive-grade alternatives or perform full validation.
What is the thermal performance difference between the MSOP and DFN packages for the MCP1602?
The MCP1602T-180I/MS uses the MSOP-8 package, which has a typical θJA of 211 °C/W on a 4-layer board with internal ground plane. In contrast, the DFN-8 variant (e.g., MCP1602T-180I/DF) achieves 60 °C/W with thermal vias to AGND. Thus, the MSOP version requires more careful thermal layout-such as copper pour under the package-but offers easier rework and optical inspection versus the DFN's exposed pad.
MCP1602T-180I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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-MSOP
MCP1602T-180I/MS FAQ
1.How can I place an order for MCP1602T-180I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1602T-180I/MS 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/MS reliable?
The price and inventory of MCP1602T-180I/MS 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/MS is usually 5 days.
3.What payment methods are accepted for MCP1602T-180I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1602T-180I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1602T-180I/MS?
MCP1602T-180I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1602T-180I/MS 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/MS?
For technical support, including MCP1602T-180I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1602T-180I/MS requirements.
6.How does Aetrix verify that MCP1602T-180I/MS is sourced from the original manufacturer or authorized distributors?
All MCP1602T-180I/MS 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/MS meets industry standards.
7.What is the process for return or replacement of MCP1602T-180I/MS?
All MCP1602T-180I/MS units undergo pre-shipment inspection (PSI). If there is an issue with MCP1602T-180I/MS, 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/MS part is unused and in its original packaging.
Return procedure for MCP1602T-180I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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