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Microchip Technology MCP1602-150I/MS
- Part No.:
- MCP1602-150I/MS
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP1602-150I/MS.pdf
- Description:
- IC REG BUCK 1.5V 500MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:794
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Product details
Overview
MCP1602-150I/MS from Microchip Technology is a fixed-output 1.5 V, 500 mA synchronous buck regulator in MSOP-8 package, featuring 2.0 MHz PWM operation, power-good monitoring with 262 ms delay, and automatic PWM-to-PFM mode transition for battery-powered systems. It operates from 2.7V to 5.5V input, delivers >90% typical efficiency, and integrates overtemperature, overcurrent, and undervoltage lockout protection.
For engineers reviewing the MCP1602-150I/MS datasheet, MCP1602-150I/MS pinout, MCP1602-150I/MS application, or MCP1602-150I/MS equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters, real-world application mappings, and two rigorously cross-checked alternative parts for portable power management design.
Technical Context
The MCP1602-150I/MS implements a fully integrated synchronous buck topology with internal P-channel (450 mΩ RDS(on)) and N-channel (450 mΩ RDS(on)) MOSFETs, enabling high-efficiency DC-DC conversion without external switches. Its dual-mode control architecture automatically transitions between 2.0 MHz fixed-frequency PWM (for low-noise, low-ripple heavy-load operation) and pulse-frequency modulation (PFM) at light loads to maintain ultra-low quiescent current (45 µA typical).
Power-good signaling uses an open-drain PG output with precise 94% VOUT high-threshold and 92% VOUT low-threshold, plus 2% hysteresis and 262 ms active timeout - all internally generated without external components. Protection includes cycle-by-cycle current limiting (700 mA peak), thermal shutdown at 150°C, and UVLO with 2.55 V nominal turn-on and 200 mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2.5% - eliminates need for external feedback resistors and compensation network. |
| Max Output Current | 500 mA continuous - supports single-core processors, USB peripherals, and digital camera modules. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with 1-cell Li-ion, 2–3-cell NiMH/NiCd, and USB 5 V bus inputs. |
| Switching Frequency | 2.0 MHz (typical) - enables use of compact 4.7 µH inductors and 4.7 µF ceramic capacitors. |
| Quiescent Current | 45 µA (typical) - extends battery life in always-on portable devices during standby. |
| Power-Good Delay | 262 ms (typical) - ensures stable output before system reset release or processor boot sequence. |
| Thermal Shutdown | 150°C with 10°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
Package: 8-pin 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 logic input | Active-high (>45% VIN); pulls device into <0.05 µA shutdown state when low. |
| 2 VCC | Analog supply rail | Internally derived from VIN; powers error amplifier, reference, and timing circuits. |
| 3 PG | Open-drain power-good output | Asserts low when VOUT drops below 92% of 1.5 V; requires external pull-up for logic-level interface. |
| 4 AGND | Analog ground reference | Separate from PGND; must connect to quiet analog ground plane to minimize feedback noise. |
| 5 VOUT | Fixed-output voltage node | Direct connection to regulated 1.5 V output; no resistor divider required (fixed version). |
| 6 VIN | Main power input | Accepts 2.7–5.5 V; supplies internal regulators and switching FETs; requires local 4.7 µF ceramic decoupling. |
| 7 LX | Switch node | Connects directly to inductor; carries high di/dt current; demands shortest possible trace to minimize EMI. |
| 8 PGND | Power ground return | Carries high-current switch return path; must be routed separately from AGND and tied at single point. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic PWM-to-PFM transition | Enables >90% efficiency across full 0.1–500 mA load range without manual mode control or external circuitry. |
| Internally compensated | Eliminates need for external RC compensation network - reduces BOM count and layout sensitivity. |
| Integrated MOSFETs | P- and N-channel synchronous switches (450 mΩ each) reduce conduction loss and simplify external component selection. |
| Power-good with delay | 262 ms timeout ensures microcontroller reset remains asserted until output stabilizes post-startup. |
| UVLO with hysteresis | 2.55 V turn-on threshold + 200 mV hysteresis prevents oscillation during weak battery or high-impedance input conditions. |
Applications
| Cellular Telephones | USB-Powered Devices |
|---|---|
Use Scenario: Powering baseband processor and RF transceiver from single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 1.5 V system rail regulator with power-good sequencing for safe boot. Use Value: Delivers 500 mA at >90% efficiency while maintaining 45 µA quiescent draw during sleep modes. |
Use Scenario: Regulating clean 1.5 V supply for USB audio interface ICs or HID controllers. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter replacing linear regulator to reduce heat and extend host port compliance. Use Value: 2.0 MHz switching avoids audible noise and enables sub-5 mm² solution size with 4.7 µH inductor. |
| Digital Cameras | Portable Computers |
Use Scenario: Supplying image sensor analog core and ISP logic from 3.3 V or 5 V USB input. IC Role / Device Role / Timing Role: High-efficiency step-down regulator with fast transient response for burst-mode imaging. Use Value: 262 ms PG delay synchronizes sensor initialization with stable 1.5 V rail; PFM mode preserves battery during preview. |
Use Scenario: Generating 1.5 V for DDR memory termination or low-power I/O rails in sub-notebook designs. IC Role / Device Role / Timing Role: Compact, thermally robust buck regulator supporting industrial temperature range (–40°C to +85°C). Use Value: MSOP-8 footprint fits tight layouts; 211°C/W θJA allows 500 mA operation on standard 4-layer board. |
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 | 1.5 V fixed, 500 mA, 3.6 MHz switching, 17 µA IQ, no PG output | Lacks power-good signal; higher frequency enables smaller inductors but increases EMI filtering complexity | Choose when ultra-low IQ and minimal solution size outweigh need for power sequencing confirmation |
| RT8059GJ6 | 1.5 V fixed, 600 mA, 1.5 MHz, 25 µA IQ, open-drain PG with 200 ms delay | Higher current rating and lower IQ, but PG delay shorter by 62 ms and thermal shutdown at 145°C | Prefer when marginally higher load headroom and lower standby power are critical, and 200 ms PG timing is acceptable |
Compared with MCP1602-150I/MS, TPS62231DRYR offers lower quiescent current and higher switching frequency but omits power-good signaling essential for reliable system boot; RT8059GJ6 provides higher output current and lower IQ but trades 62 ms of PG delay and tighter thermal shutdown threshold, affecting sequencing robustness in thermally constrained designs.
Availability
MCP1602-150I/MS is available at Aetrix Electronics and suitable for cellular telephones, USB-powered devices, digital cameras, portable computers, and handheld organizers requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MCP1602-150I/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 company specializing in microcontrollers, analog devices, and power management ICs, with emphasis on reliability, longevity, and broad ecosystem support.
The MCP1602 product line delivers highly integrated, low-quiescent-current synchronous buck regulators optimized for space-constrained, battery-operated portable electronics where efficiency, thermal performance, and power sequencing integrity are critical.
FAQ
What is the input voltage range supported by the MCP1602-150I/MS?
The MCP1602-150I/MS supports an input voltage range of 2.7 V to 5.5 V. This range accommodates common portable power sources including single-cell Li-ion batteries (2.7–4.2 V), two- or three-cell NiMH/NiCd packs, and standard USB 5 V bus inputs. Operation below 2.7 V is blocked by undervoltage lockout, and absolute maximum rating is 6.0 V on VIN relative to AGND.
Does the MCP1602-150I/MS require external compensation components?
No, the MCP1602-150I/MS is internally compensated. Unlike adjustable-output buck regulators, the fixed 1.5 V version (MCP1602-150I/MS) does not require external RC compensation networks. This simplifies design, reduces bill-of-materials count, and improves layout robustness - confirmed in Section 5.3 and Figure 6-1 of DS22061A.
What is the function of the PG (power-good) pin on the MCP1602-150I/MS?
The PG pin on the MCP1602-150I/MS is an open-drain output that signals when the 1.5 V output is within regulation - specifically, above 94% (1.41 V) of nominal during startup and remains asserted for 262 ms once valid. It transitions low when VOUT falls below 92% (1.38 V). This enables safe microcontroller reset release and system power sequencing.
Can the MCP1602-150I/MS operate in PFM mode at light loads?
Yes, the MCP1602-150I/MS automatically transitions from 2.0 MHz PWM mode to pulse-frequency modulation (PFM) mode under light-load conditions. This reduces switching activity to minimize quiescent current - achieving 45 µA typical - while maintaining regulation. The transition occurs without external control or configuration, as detailed in Sections 4.2.1 and 4.2.2 of DS22061A.
What package type is used for the MCP1602-150I/MS?
The MCP1602-150I/MS uses the 8-pin MSOP (Mini Small Outline Package) with dimensions 3.0 mm × 4.9 mm × 1.1 mm. It features gull-wing leads and no exposed thermal pad - distinguishing it from the DFN-8 variant (e.g., MCP1602-150I/MC), which includes an exposed pad for enhanced thermal performance.
MCP1602-150I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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-MSOP
MCP1602-150I/MS FAQ
1.How can I place an order for MCP1602-150I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1602-150I/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 MCP1602-150I/MS reliable?
The price and inventory of MCP1602-150I/MS 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/MS is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1602-150I/MS transactions.
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MCP1602-150I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1602-150I/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 MCP1602-150I/MS?
For technical support, including MCP1602-150I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1602-150I/MS requirements.
6.How does Aetrix verify that MCP1602-150I/MS is sourced from the original manufacturer or authorized distributors?
All MCP1602-150I/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 MCP1602-150I/MS meets industry standards.
7.What is the process for return or replacement of MCP1602-150I/MS?
All MCP1602-150I/MS units undergo pre-shipment inspection (PSI). If there is an issue with MCP1602-150I/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 MCP1602-150I/MS part is unused and in its original packaging.
Return procedure for MCP1602-150I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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