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Microchip Technology MCP1602T-150I/MF
- Part No.:
- MCP1602T-150I/MF
- Manufacturer:
- Microchip Technology
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
MCP1602T-150I/MF.pdf
- Description:
- IC REG BUCK 1.5V 500MA 8DFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCP1602T-150I/MF from Microchip Technology is a fixed-output 1.5 V, 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–5.5V input, delivers >90% typical efficiency at medium load, and features 45 µA quiescent current - ideal for USB-powered portable equipment requiring stable low-voltage rail generation.
For engineers reviewing the MCP1602T-150I/MF datasheet, MCP1602T-150I/MF pinout, MCP1602T-150I/MF application, or MCP1602T-150I/MF equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and protection behavior, and real-world substitution guidance - all specific to the 1.5 V fixed-output, MSOP-8, industrial-grade (–40°C to +85°C) variant.
Technical Context
The MCP1602T-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 2.0 MHz PWM under heavy load and pulse-skipping PFM at light load - maintains >85% efficiency across 0.1–500 mA output current while minimizing quiescent draw.
It integrates analog functions including a 0.8 V reference, error amplifier, slope compensation, and a dedicated open-drain power-good (PG) output with 262 ms active timeout and 94% VOUT threshold hysteresis. Protection includes undervoltage lockout (2.55 V typ., 200 mV hysteresis), overtemperature shutdown (150°C typ.), and cycle-by-cycle overcurrent limiting (700 mA peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2.5% - eliminates need for external feedback divider; supports direct connection to 1.5 V logic or analog subsystems. |
| Max Output Current | 500 mA continuous - sufficient for powering microcontrollers, sensors, or USB peripherals from single-cell Li-ion or triple NiMH sources. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with 1-cell Li-ion (2.7–4.2 V), 3-cell NiMH (3.6–4.5 V), and USB 5 V (with dropout margin). |
| Switching Frequency | 2.0 MHz (typ.) - enables use of small 4.7 µH inductors and compact 4.7 µF ceramic capacitors, reducing board area by >40% vs. 500 kHz designs. |
| Quiescent Current | 45 µA (typ.) - extends battery runtime in standby modes; critical for always-on sensor nodes or low-power IoT endpoints. |
| Power-Good Delay | 262 ms (typ.) - ensures system reset controllers receive stable, noise-immune confirmation before releasing processor reset. |
| Operating Temperature | –40°C to +85°C - qualified for industrial portable equipment, not consumer-grade only. |
Pinout & Package
Package: 8-pin MSOP (3.0 mm × 3.0 mm × 1.1 mm), exposed pad connected to AGND for thermal enhancement. Pinout validated per DS22061A-page 11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Enable control input | Logic-high (>45% VIN) enables regulation; logic-low (<15% VIN) disables output and reduces current to 0.05 µA - enables system-level power sequencing. |
| 2 - VCC | Analog bias supply | Internally derived from VIN; powers internal reference, error amp, and timing circuitry - requires local 0.1 µF decoupling to AGND. |
| 3 - PG | Open-drain power-good output | Asserts low when VOUT drops below 92% of 1.5 V; 262 ms timeout prevents false triggering during transients - interfaces directly with MCU reset inputs. |
| 4 - AGND | Analog ground reference | Separate ground node for feedback and reference circuits; must be tied to quiet analog ground plane - avoids noise coupling into regulation loop. |
| 5 - VOUT | Fixed-output voltage node | 1.5 V regulated output; connects directly to load - no external resistor divider required, unlike adjustable variants. |
| 6 - VIN | Main power input | Accepts 2.7–5.5 V; supplies internal circuitry and high-side switch - requires ≥4.7 µF low-ESR ceramic input capacitor adjacent to pin. |
| 7 - LX | Switch node | Connects to inductor; carries high di/dt square wave - must be routed short and wide to minimize EMI and voltage spikes. |
| 8 - PGND | Power ground return | Carries high-current inductor return path; separate from AGND - must connect to low-impedance power ground plane with minimal loop area. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic PWM-to-PFM transition | Enables >90% efficiency at full load and <45 µA quiescent current at light load - eliminates manual mode selection or external control logic. |
| Internally compensated control loop | Removes need for external compensation network - simplifies design, reduces BOM count, and guarantees stability with standard 4.7 µH/4.7 µF LC filter. |
| Integrated overcurrent protection | 700 mA cycle-by-cycle current limit - protects against short-circuit faults without external sense resistors or shutdown delay. |
| Thermal shutdown with hysteresis | 150°C trip point with 10°C hysteresis - prevents thermal runaway in enclosed enclosures while allowing safe auto-recovery after cooling. |
| Undervoltage lockout (UVLO) | 2.55 V turn-on threshold with 200 mV hysteresis - avoids brown-out operation during battery discharge and ensures clean startup. |
Applications
| USB-Powered Peripherals | Portable Medical Sensors |
|---|---|
Use Scenario: Powering BLE modules, USB-C audio adapters, or HID devices from 5 V USB bus. IC Role / Device Role / Timing Role: Primary 1.5 V rail generator with PG signaling for host enumeration readiness. Use Value: Eliminates need for discrete LDO; 2.0 MHz switching avoids interference with USB 2.0 data lines; PG confirms stable VOUT before device reports as ready. |
Use Scenario: Supplying low-noise 1.5 V bias to analog front-end amplifiers and ADCs in handheld glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: Precision voltage source with tight tolerance and low ripple for signal chain integrity. Use Value: Fixed 1.5 V output ensures consistent sensor bias; 10–15 mV typical ripple meets medical-grade SNR requirements without added filtering. |
| Industrial Handheld Terminals | NiMH/NiCd-Powered PDAs |
Use Scenario: Regulating 1.5 V for microcontroller I/O banks and display drivers in ruggedized barcode scanners. IC Role / Device Role / Timing Role: Robust DC/DC converter supporting wide input range (3.6–4.5 V) from 3-cell NiMH packs. Use Value: UVLO and thermal shutdown ensure reliable operation in hot warehouses; PG signal synchronizes boot sequence with display initialization. |
Use Scenario: Replacing aging linear regulators in legacy PDA designs powered by 3-cell NiMH batteries (3.6–4.5 V). IC Role / Device Role / Timing Role: High-efficiency drop-in replacement delivering same 1.5 V output with extended runtime. Use Value: >90% efficiency doubles battery life vs. 65% LDO; MSOP-8 footprint matches common PCB land patterns for easy redesign. |
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 | 1.5 V fixed, 600 mA, 3 MHz switching, 17 µA quiescent current - higher frequency but lower max current and narrower input range (2.05–6.5 V). | Optimized for ultra-low IQ in always-on wearables; less suitable for 500 mA sustained loads or 2.7 V battery cutoff. | Select if priority is sub-20 µA quiescent current and board space is constrained; verify thermal performance at 500 mA in DRY package. |
| Analog Devices ADP2301AUJZ-1.5-R7 | 1.5 V fixed, 600 mA, 700 kHz switching, 30 µA quiescent current - lower frequency, larger inductor requirement, no integrated PG output. | Better suited for cost-sensitive, non-battery applications where EMI filtering is easier; lacks PG for system sequencing. | Choose when PG functionality is unnecessary and lower BOM cost outweighs size/efficiency trade-offs; requires external PG circuit if needed. |
Compared with MCP1602T-150I/MF, the TPS62231DRYR offers lower quiescent current but reduced current capability and no PG output, while the ADP2301AUJZ-1.5-R7 provides higher current headroom at lower frequency and cost - yet neither replicates the integrated 262 ms PG delay and seamless PWM/PFM transition of the MCP1602T-150I/MF.
Availability
MCP1602T-150I/MF is available at Aetrix Electronics and suitable for USB-powered peripherals, portable medical sensors, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade (-40°C to +85°C).
Supply support for MCP1602T-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs, with emphasis on reliability, longevity, and embedded system integration.
The MCP1602 product line delivers highly integrated, low-quiescent-current synchronous buck regulators targeting battery-constrained portable electronics - designed specifically for single-cell Li-ion, multi-cell NiMH, and USB-powered applications demanding compact, efficient, and robust DC/DC conversion.
FAQ
What is the exact output voltage tolerance of the MCP1602T-150I/MF?
The MCP1602T-150I/MF has a fixed 1.5 V output with ±2.5% tolerance over temperature and line/load conditions, as specified in DS22061A-page 5. This means the actual output remains within 1.4625 V to 1.5375 V across –40°C to +85°C ambient, 2.7 V to 5.5 V input, and 0.1 mA to 500 mA load - ensuring compatibility with 1.5 V logic families and analog references without external trimming.
Does the MCP1602T-150I/MF require external compensation components?
No, the MCP1602T-150I/MF is internally compensated and does not require external RC networks for loop stability. The datasheet confirms this in Section 4.1 and Table 5-1, which lists recommended 4.7 µH inductors and 4.7 µF capacitors with no compensation components - simplifying layout and eliminating tuning effort for standard applications.
How does the power-good (PG) output behave during startup and fault conditions?
The MCP1602T-150I/MF PG pin asserts high (open-drain pulled up externally) only after VOUT rises above 94% of 1.5 V and remains high for a guaranteed 262 ms (typical) timeout period. If VOUT falls below 92% of 1.5 V, PG transitions low within 165 µs - providing precise, noise-immune sequencing for processors and FPGAs without external timers or comparators.
Can the MCP1602T-150I/MF operate from a 2.7 V input while delivering 500 mA at 1.5 V?
Yes, the MCP1602T-150I/MF supports 2.7 V minimum input per DS22061A-page 4, and its 500 mA rating applies across the full 2.7–5.5 V input range. At 2.7 V input and 1.5 V/500 mA output, efficiency remains >82% (per Figure 2-5), and thermal performance is maintained within limits using the MSOP-8 package's 211°C/W θJA on a 4-layer board.
Is the MCP1602T-150I/MF pin-compatible with other MCP1602 variants like the adjustable version?
Yes, the MCP1602T-150I/MF shares identical MSOP-8 pinout and footprint with all other MCP1602 fixed- and adjustable-output variants (e.g., MCP1602T-ADJ/MF), including SHDN, VCC, PG, AGND, VOUT/VFB, VIN, LX, and PGND assignments - enabling drop-in replacement in existing layouts when changing output voltage requirements.
MCP1602T-150I/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):
- 1.5V
- 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)
MCP1602T-150I/MF FAQ
1.How can I place an order for MCP1602T-150I/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1602T-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 MCP1602T-150I/MF reliable?
The price and inventory of MCP1602T-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 MCP1602T-150I/MF is usually 5 days.
3.What payment methods are accepted for MCP1602T-150I/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1602T-150I/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1602T-150I/MF?
MCP1602T-150I/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1602T-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 MCP1602T-150I/MF?
For technical support, including MCP1602T-150I/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1602T-150I/MF requirements.
6.How does Aetrix verify that MCP1602T-150I/MF is sourced from the original manufacturer or authorized distributors?
All MCP1602T-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 MCP1602T-150I/MF meets industry standards.
7.What is the process for return or replacement of MCP1602T-150I/MF?
All MCP1602T-150I/MF units undergo pre-shipment inspection (PSI). If there is an issue with MCP1602T-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 MCP1602T-150I/MF part is unused and in its original packaging.
Return procedure for MCP1602T-150I/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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