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Microchip Technology MCP1602-180I/MF
- Part No.:
- MCP1602-180I/MF
- Manufacturer:
- Microchip Technology
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
MCP1602-180I/MF.pdf
- Description:
- IC REG BUCK 1.8V 500MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:538
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Product details
Overview
MCP1602-180I/MF from Microchip Technology is a fixed-output 1.8V, 500 mA synchronous buck regulator with integrated power-good monitoring, 2.0 MHz PWM switching, 45 µA quiescent current, and undervoltage lockout - designed for single-cell Li-Ion or dual/triple NiMH/NiCd battery-powered portable electronics requiring stable low-noise DC/DC conversion.
For engineers reviewing the MCP1602-180I/MF datasheet, MCP1602-180I/MF pinout, MCP1602-180I/MF application, or MCP1602-180I/MF equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal and protection behavior, and real-world selection guidance for battery-powered embedded systems.
Technical Context
The MCP1602-180I/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) frequency with synchronous P- and N-channel MOSFETs (RDS(on) = 450 mΩ each); at light loads, it enters discontinuous conduction PFM mode to maintain 45 µA typical quiescent current.
Its power-good (PG) output provides open-drain signaling with 94% VOUT high threshold, 92% VOUT low threshold, 2% hysteresis, and 262 ms (typical) active timeout - all referenced to the internal 0.8 V feedback reference and validated across –40°C to +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2.5%, enabling direct replacement of 1.8 V LDOs without external resistors |
| Max Output Current | 500 mA continuous, supporting core logic rails in portable processors and USB peripherals |
| Input Voltage Range | 2.7 V to 5.5 V, compatible with 1-cell Li-Ion (2.7–4.2 V) and 2-/3-cell NiMH (2.4–4.5 V) sources |
| Switching Frequency | 2.0 MHz (1.6–2.4 MHz), allowing use of compact 3.3–4.7 µH inductors and <10 µF ceramic capacitors |
| Quiescent Current | 45 µA (typical), minimizing standby drain in always-on battery applications like PDAs and digital cameras |
| Power-Good Delay | 262 ms (typical), ensuring reliable system reset sequencing after regulated output stabilization |
| Thermal Shutdown | 150°C junction activation with 10°C hysteresis, preventing latch-up during sustained overload or poor PCB thermal design |
Pinout & Package
Package: 8-pin 3×3 mm DFN (MCP1602-180I/MF suffix denotes DFN-8 with exposed thermal pad). Pin 1 marked by dot; Exposed Pad (EP) must be connected to AGND via ≥2 thermal vias for θJA = 60°C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SHDN | Enable control input | Logic-high (>45% VIN) enables regulation; 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 - decouple with 0.1 µF near pin |
| 3 PG | Open-drain power-good output | Asserts low when VOUT drops below 92% of 1.8 V; requires external pull-up for host processor reset coordination |
| 4 AGND | Analog ground reference | Separate ground return for feedback and reference circuits - tie to PGND only at single point near IC |
| 5 VOUT | Fixed-output voltage node | 1.8 V regulated output; connects directly to load - no resistor divider required (unlike 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 |
| 7 LX | Switch node | High-slew-rate connection to buck inductor - minimize trace length/loop area to reduce EMI and voltage spikes |
| 8 PGND | Power ground return | Carries peak inductor current (up to 700 mA); connect to solid ground plane under IC and inductor |
Key Features
| Feature | Design Value |
|---|---|
| Automatic PWM/PFM mode transition | Enables >90% efficiency across 0.1–500 mA load range without external control or configuration |
| Internally compensated control loop | Eliminates need for external compensation network - reduces BOM count and layout sensitivity |
| Synchronous rectification | Integrated P- and N-channel MOSFETs replace external diode, reducing conduction loss and improving light-load efficiency |
| Undervoltage lockout (UVLO) | 2.55 V (typical) turn-on threshold with 200 mV hysteresis prevents erratic startup during battery sag |
| Overcurrent protection | Cycle-by-cycle 700 mA peak current limit protects against short-circuit faults without latch-up |
Applications
| Portable Medical Sensors | Digital Camera Core Rail |
|---|---|
Use Scenario: Powering ultra-low-power glucose monitors and pulse oximeters from coin-cell or Li-Poly batteries. IC Role / Device Role / Timing Role: Primary 1.8 V system rail regulator delivering clean, stable voltage to microcontroller and analog front-end. Use Value: 45 µA quiescent current extends battery life beyond 1 year in sleep-dominated operation; PG signal synchronizes sensor initialization. |
Use Scenario: Supplying image sensor and ISP core logic in compact digital still/video cameras. IC Role / Device Role / Timing Role: Fixed 1.8 V buck converter replacing inefficient linear regulators to manage thermal density on small PCBs. Use Value: 2.0 MHz switching enables use of miniature 3.3 µH shielded inductors and 4.7 µF X5R ceramics - reducing footprint by >40% vs. lower-frequency alternatives. |
| USB-Powered Peripherals | Industrial Handheld Terminals |
Use Scenario: Regulating 5 V USB bus down to 1.8 V for Bluetooth modules, HID controllers, and flash memory interfaces. IC Role / Device Role / Timing Role: Input-tolerant DC/DC stage accepting up to 5.5 V while maintaining tight line regulation (0.3 %/V). Use Value: UVLO and thermal shutdown ensure safe operation during USB hot-plug events and transient overloads. |
Use Scenario: Providing robust 1.8 V supply for ARM Cortex-M based terminals operating in wide-temperature industrial environments. IC Role / Device Role / Timing Role: High-reliability power management IC rated for –40°C to +85°C ambient with 125°C max junction temperature. Use Value: 262 ms PG delay prevents false resets during momentary brownouts; DFN package supports conformal coating for harsh 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 |
|---|---|---|---|
| Texas Instruments TPS62231DRYR | 1.8 V fixed, 600 mA, 3 MHz switching, 17 µA quiescent current; requires external soft-start capacitor | Better light-load efficiency but narrower 2.05–6.0 V input range - unsuitable for sub-2.05 V battery discharge tails | Select when ultra-low IQ and faster transient response are prioritized over battery-end-of-life support |
| Analog Devices ADP2302ARMZ-1.8-R7 | 1.8 V fixed, 600 mA, 600 kHz switching, 2.2 mA quiescent current; includes enable and PG pins | Lower switching frequency demands larger LC components; higher IQ increases standby drain in battery apps | Prefer for cost-sensitive industrial designs where thermal margin exceeds 20°C and board space is not constrained |
Compared with MCP1602-180I/MF, the TPS62231DRYR offers superior light-load efficiency but sacrifices deep-discharge compatibility, while the ADP2302ARMZ-1.8-R7 trades switching noise and size for simpler thermal management - making MCP1602-180I/MF optimal for space-constrained, battery-first portable designs.
Availability
MCP1602-180I/MF is available at Aetrix Electronics and suitable for portable medical sensors, digital camera core rails, USB-powered peripherals, industrial handheld terminals, and battery-backed memory modules requiring stable component supply with full lifecycle traceability.
Supply support for MCP1602-180I/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 manufacturer specializing in microcontrollers, analog devices, and power management ICs for embedded control applications.
The MCP1602 product line delivers highly integrated, low-quiescent-current DC/DC converters optimized for battery-powered portable electronics - emphasizing efficiency across full load range, minimal external component count, and robust protection features.
FAQ
What is the input voltage range supported by the MCP1602-180I/MF?
The MCP1602-180I/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), two- or three-cell NiMH/NiCd batteries (2.4–4.5 V), and standard 3.3 V or 5 V system rails. Operation below 2.7 V is prevented by undervoltage lockout, which activates at 2.55 V (typical) with 200 mV hysteresis to avoid unstable startup during battery discharge.
Does the MCP1602-180I/MF require external compensation components?
No, the MCP1602-180I/MF is internally compensated and does not require external compensation components. Its control loop is optimized for stability with standard 4.7 µH inductors and 4.7 µF ceramic output capacitors. This eliminates the need for external R-C networks, simplifying layout and reducing BOM count - a key advantage over adjustable buck regulators like the MCP1602-ADJ variants.
How does the power-good (PG) function operate on the MCP1602-180I/MF?
The MCP1602-180I/MF provides an open-drain power-good (PG) output that asserts low when the 1.8 V output falls below 92% of regulation (1.656 V) and goes high-impedance when above 94% (1.692 V), with 2% hysteresis. A built-in 262 ms (typical) timeout ensures the PG signal remains asserted long enough for host processors to complete reliable reset sequencing after power stabilization.
What protection features are integrated into the MCP1602-180I/MF?
The MCP1602-180I/MF integrates undervoltage lockout (UVLO), cycle-by-cycle overcurrent protection (700 mA peak limit), and thermal shutdown (150°C junction activation with 10°C hysteresis). These features operate autonomously without external components - UVLO prevents startup below 2.55 V, overcurrent limiting disables the high-side switch during shorts, and thermal shutdown halts switching until junction temperature drops to ~140°C.
Is the MCP1602-180I/MF pin-compatible with other variants in the MCP1602 family?
Yes, the MCP1602-180I/MF shares identical pinout and package (8-pin 3×3 mm DFN) with all other MCP1602 variants, including adjustable versions and other fixed-output options (1.2 V, 1.5 V, 2.5 V, 3.3 V). This allows direct substitution in existing layouts when changing output voltage requirements - provided external feedback resistors are removed for fixed-output use and input/output capacitor values remain appropriate for the new VOUT.
MCP1602-180I/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tube
- 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)
MCP1602-180I/MF FAQ
1.How can I place an order for MCP1602-180I/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1602-180I/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 MCP1602-180I/MF reliable?
The price and inventory of MCP1602-180I/MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1602-180I/MF is usually 5 days.
3.What payment methods are accepted for MCP1602-180I/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1602-180I/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1602-180I/MF?
MCP1602-180I/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1602-180I/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 MCP1602-180I/MF?
For technical support, including MCP1602-180I/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1602-180I/MF requirements.
6.How does Aetrix verify that MCP1602-180I/MF is sourced from the original manufacturer or authorized distributors?
All MCP1602-180I/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 MCP1602-180I/MF meets industry standards.
7.What is the process for return or replacement of MCP1602-180I/MF?
All MCP1602-180I/MF units undergo pre-shipment inspection (PSI). If there is an issue with MCP1602-180I/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 MCP1602-180I/MF part is unused and in its original packaging.
Return procedure for MCP1602-180I/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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