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Microchip Technology MCP1602-150I/MF
- Part No.:
- MCP1602-150I/MF
- Manufacturer:
- Microchip Technology
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
MCP1602-150I/MF.pdf
- Description:
- IC REG BUCK 1.5V 500MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:693
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Product details
Overview
MCP1602-150I/MF from Microchip Technology is a fixed-output 1.5V, 500 mA synchronous buck regulator with integrated power-good monitoring, 2.0 MHz PWM switching, and automatic PWM-to-PFM mode transition for battery-powered systems. It operates from 2.7V to 5.5V input, delivers >90% typical efficiency at light-to-heavy loads, and features 45 µA quiescent current - ideal for USB-powered portable devices requiring stable low-voltage rail generation.
For engineers reviewing the MCP1602-150I/MF datasheet, MCP1602-150I/MF pinout, MCP1602-150I/MF application, or MCP1602-150I/MF equivalent, key selection criteria include its fixed 1.5V output, 262 ms power-good delay, undervoltage lockout (2.55V typ), thermal shutdown (150°C), and compatibility with compact 3×3 DFN-8 packaging for space-constrained designs.
Technical Context
The MCP1602-150I/MF implements a fully integrated synchronous buck topology with internal P-channel and N-channel MOSFETs (RDS(on) = 450 mΩ each), enabling high-efficiency DC/DC conversion without external switches. Its dual-mode operation - fixed-frequency 2.0 MHz PWM under heavy load and pulse-frequency modulation (PFM) at light load - maintains >90% efficiency across 0.1–500 mA output current while minimizing quiescent draw.
Power-good functionality uses an open-drain PG pin with 94% VOUT threshold (typ), 2% hysteresis, and 262 ms active timeout, ensuring reliable system reset sequencing. Protection includes cycle-by-cycle overcurrent limiting (700 mA peak), undervoltage lockout (2.55V ±150 mV), and thermal shutdown (150°C with 10°C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2.5% - eliminates need for external feedback resistors and simplifies layout. |
| Max Output Current | 500 mA continuous - supports processor cores, memory, and peripheral ICs in portable systems. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and 3-cell NiMH/NiCd (3.6–4.5V). |
| Switching Frequency | 2.0 MHz (typ) - enables use of small 4.7 µH inductors and 4.7 µF ceramic capacitors for minimal board area. |
| Quiescent Current | 45 µA (typ) - extends battery life in always-on or standby modes of handheld equipment. |
| Power-Good Delay | 262 ms (typ) - provides stable timing margin before host processor release from reset. |
| UVLO Threshold | 2.55V (typ) with 200 mV hysteresis - prevents erratic startup during battery voltage sag or brownout. |
Pinout & Package
The MCP1602-150I/MF is housed in an 8-pin 3×3 mm DFN package with exposed thermal pad (EP), optimized for thermal performance on 4-layer PCBs (θJA = 60°C/W). The EP must be connected to AGND via multiple vias for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SHDN | Enable control input | Logic-high (>45% VIN) enables regulation; logic-low (<15% VIN) disables device and reduces current to 0.05 µA. |
| 2 VCC | Analog supply rail | Internally derived bias voltage for error amplifier and reference; decoupled via 0.1 µF capacitor. |
| 3 PG | Open-drain power-good indicator | Asserts low when VOUT drops below 92% of 1.5V; requires external pull-up for system reset signaling. |
| 4 AGND | Analog ground reference | Separate ground return for feedback and reference circuitry; must be tied to PGND at single point near device. |
| 5 VOUT | Fixed-output voltage node | 1.5V regulated output; connects directly to load and output capacitor (min 4.7 µF ceramic). |
| 6 VIN | Main power input | Accepts 2.7–5.5V; requires 4.7 µF low-ESR ceramic input capacitor placed adjacent to pin. |
| 7 LX | Switch node | Connects to inductor; carries high di/dt current - requires short, wide trace to minimize EMI and voltage spikes. |
| 8 PGND | Power ground return | High-current return path for LX and internal MOSFETs; routed separately from AGND until star-point connection. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic PWM-to-PFM mode transition | Enables >90% efficiency from 0.1 mA to 500 mA load without external control or configuration. |
| Internally compensated control loop | Eliminates need for external compensation network - reduces BOM count and design validation effort. |
| Integrated synchronous MOSFETs | Reduces external component count by two; RDS(on) = 450 mΩ each minimizes conduction loss at full load. |
| 262 ms power-good timeout | Ensures stable VOUT before releasing downstream logic reset, preventing premature system boot failure. |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction temperature and auto-restarts after 10°C cooldown - protects against sustained overload. |
Applications
| USB-Powered Devices | Portable Computers |
|---|---|
Use Scenario: Powering microcontrollers, sensors, and USB interface ICs from a 5V USB port with tight space constraints. IC Role / Device Role / Timing Role: Primary 1.5V step-down regulator delivering clean, regulated rail with power-good confirmation for system initialization. Use Value: Fixed 1.5V output eliminates resistor divider; 2.0 MHz switching allows tiny 4.7 µH inductor and 4.7 µF ceramic caps - reducing total solution size by >40% vs. lower-frequency alternatives. |
Use Scenario: Supplying core logic voltage to embedded controllers in ultra-thin notebooks or tablets powered by 3-cell NiMH batteries (3.6–4.5V). IC Role / Device Role / Timing Role: High-efficiency buck converter maintaining stable 1.5V under dynamic CPU load changes and battery voltage decay. Use Value: 45 µA quiescent current extends standby time; automatic PFM mode preserves efficiency at sub-10 mA sleep currents without firmware intervention. |
| Cellular Telephones | Digital Cameras |
Use Scenario: Generating 1.5V for baseband processors and RF front-end ICs in dual-mode GSM/EDGE handsets with Li-ion battery input. IC Role / Device Role / Timing Role: Main system regulator with fast transient response and precise power-good signaling for coordinated power sequencing. Use Value: 262 ms PG delay aligns with baseband SoC reset timing requirements; 700 mA current limit handles burst transmit loads without latch-off. |
Use Scenario: Powering image sensor interfaces and ISP processors in compact digital cameras using 3-cell alkaline or NiMH batteries (4.5V nominal). IC Role / Device Role / Timing Role: Compact, thermally efficient 1.5V supply supporting rapid on/off cycling during photo capture sequences. Use Value: 3×3 DFN-8 package with EP enables direct thermal coupling to PCB ground plane - sustains 500 mA output at +70°C ambient without derating. |
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 | Fixed 1.5V output, 600 mA rating, 3.6 MHz switching, 17 µA quiescent current; requires external soft-start capacitor. | Better light-load efficiency and smaller inductor footprint, but lacks integrated power-good output. | Select when ultra-low IQ and minimal solution size are critical, and external PG monitoring can be implemented. |
| Analog Devices ADP2302ARDZ-1.5-R7 | Fixed 1.5V output, 600 mA rating, 600 kHz switching, 2.2 µA quiescent current; includes enable and power-good pins. | Lower switching frequency demands larger inductor/capacitor values; higher thermal resistance (θJA = 120°C/W in SOIC-8). | Select when cost-sensitive industrial designs prioritize lowest IQ over board area, and thermal headroom permits SOIC-8 packaging. |
Compared with TPS62231DRYR and ADP2302ARDZ-1.5-R7, the MCP1602-150I/MF uniquely balances 2.0 MHz operation, integrated PG with 262 ms delay, and DFN-8 thermal performance - making it optimal for portable consumer electronics where timing accuracy, compactness, and battery runtime are co-prioritized.
Availability
MCP1602-150I/MF is available at Aetrix Electronics and suitable for USB-powered devices, portable computers, cellular telephones, and digital cameras requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for MCP1602-150I/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 leading provider of microcontroller, analog, FPGA, and mixed-signal semiconductors, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP1602-150I/MF belongs to Microchip's high-efficiency synchronous buck regulator product line, designed specifically for battery- and USB-powered portable electronics demanding compact size, low quiescent current, and robust power sequencing capability.
FAQ
What is the output voltage tolerance of the MCP1602-150I/MF?
The MCP1602-150I/MF has a fixed 1.5V output with ±2.5% tolerance over temperature and line/load conditions. This specification ensures reliable operation of downstream 1.5V logic without requiring post-regulation trimming or calibration - critical for high-volume portable device manufacturing where yield and test time impact cost.
Does the MCP1602-150I/MF require external compensation components?
No, the MCP1602-150I/MF features an internally compensated control loop. Unlike adjustable regulators, this fixed-output variant does not require external R-C compensation networks - simplifying layout, reducing BOM count, and eliminating tuning steps during design validation. The internal compensation is optimized for standard 4.7 µH inductors and 4.7 µF ceramic capacitors.
How does the power-good (PG) function behave during startup and fault conditions?
The MCP1602-150I/MF asserts PG high after VOUT rises above 94% of 1.5V (1.41V) and holds it for a 262 ms timeout period. If VOUT falls below 92% (1.38V) during operation, PG transitions low within 165 µs. During UVLO or thermal shutdown, PG is actively pulled low - providing unambiguous fault signaling to host processors without additional logic.
Can the MCP1602-150I/MF operate from a 5V USB source without derating?
Yes, the MCP1602-150I/MF supports VIN up to 5.5V and delivers full 500 mA at 1.5V output from a 5V input with >85% efficiency (typical). Its 3×3 DFN-8 package with exposed pad dissipates heat effectively - achieving θJA = 60°C/W on a 4-layer board - allowing continuous operation at full load without thermal throttling in USB-powered applications.
What protection features are built into the MCP1602-150I/MF?
The MCP1602-150I/MF integrates five protection functions: (1) undervoltage lockout (2.55V threshold), (2) cycle-by-cycle overcurrent limiting (700 mA peak), (3) thermal shutdown (150°C with 10°C hysteresis), (4) soft-start (prevents VOUT overshoot), and (5) open-drain PG fault indication. These operate autonomously without external components - enhancing system reliability in unattended portable deployments.
MCP1602-150I/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):
- 1.5V
- 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)
MCP1602-150I/MF FAQ
1.How can I place an order for MCP1602-150I/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1602-150I/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 MCP1602-150I/MF reliable?
The price and inventory of MCP1602-150I/MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1602-150I/MF is usually 5 days.
3.What payment methods are accepted for MCP1602-150I/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1602-150I/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1602-150I/MF?
MCP1602-150I/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1602-150I/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 MCP1602-150I/MF?
For technical support, including MCP1602-150I/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1602-150I/MF requirements.
6.How does Aetrix verify that MCP1602-150I/MF is sourced from the original manufacturer or authorized distributors?
All MCP1602-150I/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 MCP1602-150I/MF meets industry standards.
7.What is the process for return or replacement of MCP1602-150I/MF?
All MCP1602-150I/MF units undergo pre-shipment inspection (PSI). If there is an issue with MCP1602-150I/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 MCP1602-150I/MF part is unused and in its original packaging.
Return procedure for MCP1602-150I/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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