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Microchip Technology MCP16417T-I/UN
- Part No.:
- MCP16417T-I/UN
- Manufacturer:
- Microchip Technology
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP16417T-I/UN.pdf
- Description:
- IC REG BOOST ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,919
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Product details
Overview
MCP16417T-I/UN from Microchip Technology is a synchronous boost DC-DC converter with auto-bypass functionality, designed for single-cell Li-ion or alkaline/NiMH battery-powered systems. It delivers up to 450 mA output current at 5.0 V with 3.6 V input, features 5 μA quiescent current in PFM mode, 96% peak efficiency, and automatic input-to-output bypass when Vin ≥ Vout – 0.1 V - enabling extended runtime in Bluetooth headsets and remote controllers.
For engineers reviewing the MCP16417T-I/UN datasheet, MCP16417T-I/UN pinout, MCP16417T-I/UN application, or MCP16417T-I/UN equivalent, key selection criteria include its 0.8–5.25 V input range, selectable PFM/PWM operation, programmable UVLO/LBO, 2.3 μA shutdown current, and MSOP-10/TDFN-10 package compatibility for space-constrained portable designs.
Technical Context
The MCP16417T-I/UN implements an adaptive control architecture that automatically transitions between synchronous boost regulation and direct input-to-output bypass based on real-time Vin–Vout differential, eliminating external MOSFETs and reducing system power loss during high-battery-voltage conditions. Its low-startup-threshold (0.8 V post-startup) and soft-start circuitry prevent output overshoot and limit inrush current during cold start from depleted batteries.
It operates in automatic PFM/PWM mode with no external mode-select pin - unlike PWM-only variants (e.g., MCP16412), enabling seamless efficiency optimization across light to full load. The integrated 1 A peak input current limit and internal compensation eliminate need for external loop components, simplifying design for ultra-low-power IoT endpoints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8 V (after startup) to 5.25 V - supports single-cell Li-ion (2.7–4.2 V), two-cell alkaline/NiMH (1.2–3.2 V), and fresh battery bypass scenarios. |
| Quiescent Current | 5 μA typical in PFM mode - minimizes standby drain, critical for multi-year battery life in remote controls and wearables. |
| Peak Efficiency | 96% at 5.0 VOUT, 3.6 VIN - reduces thermal stress and extends usable capacity in compact enclosures. |
| Output Current Capability | 450 mA @ 5.0 VOUT/3.6 VIN - sufficient to power BLE SoCs, sensors, and display drivers without external LDOs. |
| Shutdown Current | 2.3 μA typical - enables deep-sleep modes in MCU-based health monitors without compromising wake-up responsiveness. |
| Switching Mode | Automatic PFM/PWM - no configuration required; maintains >85% efficiency down to 10 μA load while avoiding audible noise. |
Pinout & Package
Package: 10-lead MSOP (3.0 mm × 4.9 mm) and 10-lead 3 mm × 3 mm TDFN - both RoHS-compliant, thermally enhanced, and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 0.8–5.25 V; feeds internal regulator and bypass path; requires local 4.7 μF ceramic capacitor. |
| VOUT | Regulated output node | Delivers stable output; connects to output capacitor (10 μF ceramic) and load; also serves as bypass output when enabled. |
| SW | Switch node | Internal synchronous FET drain connection; ties to external inductor (1.0–2.2 μH); switching frequency 500 kHz nominal in PWM mode. |
| FB | Feedback input | Senses output voltage via resistor divider; sets regulated VOUT (adjustable 2.0–5.25 V) or fixed 3.3 V/5.0 V depending on variant. |
| EN | Enable control | Active-high logic input; pulls to GND to disable regulator and engage 2.3 μA shutdown state. |
| LBO | Low battery indicator | Open-drain output asserts low when VIN drops below programmable UVLO threshold - signals MCU to initiate graceful shutdown. |
| GND | Power and signal reference | Common return for VIN, VOUT, SW, FB, EN, LBO; requires low-impedance PCB plane for EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| Auto input-to-output bypass | Engages when VIN ≥ VOUT − 0.1 V, eliminating switching losses and improving efficiency by up to 15% at high battery SOC. |
| Integrated soft-start | Controls ramp rate of VOUT during startup to limit inrush current to <100 mA - prevents brownout in shared battery rails. |
| Programmable UVLO & LBO | Configurable via external resistor divider on FB pin; enables precise battery end-of-life detection without additional comparators. |
| Internal compensation | Removes need for external Type-II/III compensation network - reduces BOM count by ≥3 passive components and layout area by ~12 mm². |
| Output discharge option | Internally discharges VOUT through 200 Ω path when EN = low - ensures safe power-down in medical devices per IEC 62366 requirements. |
Applications
| Wireless Audio Accessories | Portable Medical Sensors |
|---|---|
Use Scenario: Battery-powered Bluetooth® headsets requiring clean 3.3 V rail for audio codec and radio ICs under varying battery voltage (2.8–4.2 V). IC Role / Device Role / Timing Role: Synchronous boost regulator with auto-bypass - supplies regulated 3.3 V while seamlessly transitioning to direct conduction above 3.4 V to minimize dropout and heat. Use Value: Extends talk time by 22% vs. fixed-frequency boosters due to 96% peak efficiency and sub-5 μA quiescent draw in standby. | Use Scenario: Wearable pulse oximeter using single-cell Li-Po (3.0–4.2 V) powering optical sensor, ADC, and BLE transceiver. IC Role / Device Role / Timing Role: Primary power management IC - regulates 5.0 V for LED drivers and 3.3 V for MCU/sensor interface, with LBO signaling low battery to trigger data save before shutdown. Use Value: Enables 18-month shelf life with 2.3 μA shutdown current and eliminates external UVLO circuitry via programmable LBO. |
| Smart Remote Controllers | IoT Edge Node Sensors |
Use Scenario: Two-cell AA-powered universal remote with RF+IR transmission, requiring stable 3.0 V for microcontroller and RF front-end across 3.2–1.8 V battery range. IC Role / Device Role / Timing Role: Dual-mode DC-DC converter - operates in PFM for <100 μA loads (IR standby), switches to PWM for 200 mA IR burst pulses, and bypasses above 3.1 V. Use Value: Achieves >10,000 button presses per battery set by combining 5 μA quiescent current with automatic mode adaptation. | Use Scenario: LoRaWAN soil moisture sensor powered by two alkaline cells (3.2–1.6 V), transmitting data every 15 minutes. IC Role / Device Role / Timing Role: System power supervisor - boosts to 3.3 V for MCU and radio during active transmit (450 mA peak), then enters 5 μA PFM sleep between transmissions. Use Value: Delivers 3.5-year field deployment on two AA cells by maintaining >88% efficiency at 100 μA load and enabling zero-crossing bypass at full charge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS61291DRVR | Fixed 3.3 V output; no auto-bypass; 1.8 μA IQ; 1.8–5.5 V input; 400 mA max output | Lacks input-to-output bypass, limiting efficiency above 3.3 V; better suited for fixed-VOUT systems with tighter IQ budgets | Select when ultra-low IQ (<2 μA) is prioritized over dynamic efficiency optimization across wide Vin range |
| Analog Devices ADP5070ACPZ-R7 | Adjustable 2.5–5.5 V output; no auto-bypass; 2.5 MHz switching; 500 mA max; requires external compensation | Higher frequency enables smaller inductors but increases EMI sensitivity; no bypass function reduces battery utilization at high SOC | Prefer for space-constrained designs needing <1 mm height inductors, accepting trade-off in battery runtime and component count |
Compared with TPS61291DRVR and ADP5070ACPZ-R7, the MCP16417T-I/UN uniquely combines auto-bypass, internal compensation, and programmable LBO in a 10-pin MSOP/TDFN - delivering superior battery utilization and lower BOM cost for variable-input portable systems where Vin crosses Vout during discharge.
Availability
MCP16417T-I/UN is available at Aetrix Electronics and suitable for personal healthcare devices, Bluetooth headsets, and remote controllers requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for MCP16417T-I/UN 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 for embedded control applications.
The MCP1641X product line was developed specifically for ultra-low-power, battery-operated portable electronics - emphasizing adaptive efficiency, minimal external components, and seamless integration with Microchip's PIC MCUs and battery charging solutions.
FAQ
What is the minimum input voltage required for MCP16417T-I/UN to start switching?
The MCP16417T-I/UN requires a minimum of 0.8 V after initial startup to sustain regulation. However, actual startup from deep discharge may require ≥1.0 V depending on load and capacitor ESR. The device uses a low-threshold startup circuit optimized for single-cell alkaline/NiMH and Li-ion systems, and does not require external biasing to initiate operation.
Does MCP16417T-I/UN support adjustable output voltage, and how is it configured?
Yes, MCP16417T-I/UN supports adjustable output voltage from 2.0 V to 5.25 V using an external resistor divider on the FB pin. The feedback reference is 0.6 V, so VOUT = 0.6 V × (1 + R1/R2). This configuration allows precise matching to system rail requirements without changing the IC - unlike fixed-output variants such as MCP16417T-I/UN-330.
How does the auto-bypass function operate in MCP16417T-I/UN, and what triggers it?
The auto-bypass function in MCP16417T-I/UN engages when VIN ≥ VOUT − 0.1 V, routing input directly to VOUT through an internal low-RDS(on) switch. It disables the switching regulator entirely, eliminating switching losses and reducing quiescent current to 5 μA. This occurs dynamically during battery discharge - for example, bypass activates at ~3.4 V when regulating 3.3 V, extending usable battery capacity.
What is the purpose of the LBO pin on MCP16417T-I/UN, and can it be disabled?
The LBO pin on MCP16417T-I/UN is an open-drain low-battery indicator that asserts low when VIN falls below a user-programmed UVLO threshold. It cannot be fully disabled but can be left unconnected (floating) if unused - in which case it remains high-impedance and inactive. When used, it interfaces directly with MCU GPIO pins for battery-aware firmware decisions.
Is MCP16417T-I/UN pin-compatible with other MCP1641X family members, and which packages are supported?
Yes, MCP16417T-I/UN shares identical pinout and footprint across all MCP1641X variants in both MSOP-10 and 3 mm × 3 mm TDFN-10 packages. This enables drop-in replacement between versions (e.g., MCP16411/MCP16413/MCP16417) for design flexibility - though functional differences (e.g., bypass vs. discharge options) must be verified in schematic and firmware.
MCP16417T-I/UN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.82V
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.25V
- Current - Output:
- 600mA
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
MCP16417T-I/UN FAQ
1.How can I place an order for MCP16417T-I/UN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP16417T-I/UN 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 MCP16417T-I/UN reliable?
The price and inventory of MCP16417T-I/UN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP16417T-I/UN is usually 5 days.
3.What payment methods are accepted for MCP16417T-I/UN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP16417T-I/UN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP16417T-I/UN?
MCP16417T-I/UN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP16417T-I/UN 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 MCP16417T-I/UN?
For technical support, including MCP16417T-I/UN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP16417T-I/UN requirements.
6.How does Aetrix verify that MCP16417T-I/UN is sourced from the original manufacturer or authorized distributors?
All MCP16417T-I/UN 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 MCP16417T-I/UN meets industry standards.
7.What is the process for return or replacement of MCP16417T-I/UN?
All MCP16417T-I/UN units undergo pre-shipment inspection (PSI). If there is an issue with MCP16417T-I/UN, 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 MCP16417T-I/UN part is unused and in its original packaging.
Return procedure for MCP16417T-I/UN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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