My Inquiry
My Account
Microchip Technology MCP1642DT-30I/MS
- Part No.:
- MCP1642DT-30I/MS
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP1642DT-30I/MS.pdf
- Description:
- IC REG BOOST 3V 800MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,395
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCP1642DT-30I/MS from Microchip Technology is a synchronous step-up DC-DC converter with fixed 3.0V output, designed for ultra-low-voltage battery-powered systems. It delivers up to 300 mA at 3.3V input, starts from 0.65V (typical), operates at 1 MHz PWM, integrates N- and P-channel MOSFETs, and features true output disconnect in shutdown mode - enabling use in single-cell alkaline or Li-Ion PIC® MCU power rails.
For engineers reviewing the MCP1642DT-30I/MS datasheet, MCP1642DT-30I/MS pinout, MCP1642DT-30I/MS application, or MCP1642DT-30I/MS equivalent, key selection criteria include low-startup-voltage capability (<0.7V), integrated synchronous rectification, 1 µA shutdown current, Power Good open-drain signaling, and MSOP-8 package compatibility with space-constrained portable designs.
Technical Context
The MCP1642DT-30I/MS implements peak-current-mode PWM control with adaptive slope compensation, fixed 1 MHz switching frequency, and internal compensation - eliminating external loop components. Its low-noise anti-ringing switch suppresses high-frequency ringing at the SW node during discontinuous conduction mode.
It employs dual-MOSFET synchronous rectification: an N-channel boost switch (RDS(ON) = 0.15 Ω) and a P-channel rectifier (RDS(ON) = 0.3 Ω), both thermally managed via exposed pad in the MSOP-8 package. Startup bias transitions from VIN to VOUT once regulation is achieved, enabling operation down to 0.35V input at light load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±3% - internally trimmed; no external feedback resistors required. |
| Start-Up Voltage | 0.65V typical @ 3.0V VOUT, 1 mA load - enables operation from deeply discharged single-cell batteries. |
| Peak Switch Current | 1.8A typical - supports >300 mA output at 3.3V input, 3.0V output per characterization data. |
| Switching Frequency | 1.0 MHz ±15% - fixed-frequency PWM ensures predictable EMI profile and low output ripple. |
| Shutdown Current | 1 µA maximum - enables true output disconnect (MCP1642B variant), isolating VOUT from VIN during sleep. |
| Power Good Threshold | 90% of nominal VOUT (2.7V) with 3% hysteresis - provides reliable MCU reset or sequencing signal. |
| Operating Temperature | –40°C to +85°C ambient - qualified for industrial and portable medical device environments. |
Pinout & Package
Package: 8-Lead MSOP (3.0 mm × 4.9 mm, 0.65 mm pitch), with exposed thermal pad (EP) electrically isolated but requiring PCB connection to SGND/PGND plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable logic input | Active-high enable; threshold = 75% of VIN - prevents false turn-on during brown-out or battery ramp-up. |
| 2 NC | No connect | Unbonded pin; must remain unconnected per datasheet - no internal function or test access. |
| 3 PG | Open-drain Power Good | Sinks current when VOUT < 2.7V; requires external pull-up to VOUT or system rail for MCU interface. |
| 4 VOUT | Regulated output node | Connects to output capacitor and load; carries full output current; internal P-MOSFET source terminal. |
| 5 SW | Switch node | Connects boost inductor; handles 1.8A peak current; internal N-MOSFET drain / P-MOSFET source junction. |
| 6 PGND | Power ground return | High-current return path for N-MOSFET; must be tied externally to SGND with low-inductance trace. |
| 7 SGND | Signal ground reference | Return for error amplifier and VFB comparator; connects to PGND externally to minimize noise coupling. |
| 8 VIN | Input supply | Accepts 0.35V–5.5V; requires ≥4.7 µF local ceramic bypass capacitor to stabilize low-impedance battery sources. |
Key Features
| Feature | Design Value |
|---|---|
| True Output Disconnect | MCP1642B variant disables P-MOSFET and removes DC path between VIN and VOUT - preserves battery charge and prevents backfeed. |
| Low-Noise Anti-Ringing Control | Integrated damping circuit suppresses high-frequency oscillations at SW node - reduces radiated EMI without external snubbers. |
| Internal Synchronous Rectification | Eliminates external Schottky diode; reduces conduction loss by ~300 mV drop vs. discrete rectifier - improves efficiency at light loads. |
| Inrush Current Limiting & Soft-Start | 550 µs soft-start time and controlled start-up current limit prevent output overshoot and input voltage sag during cold start. |
| Thermal Shutdown with Hysteresis | 150°C trip point with 35°C hysteresis - protects against sustained overload while allowing automatic recovery after cooling. |
Applications
| Portable Medical Sensors | PIC® MCU Power Supply |
|---|---|
Use Scenario: Single-cell alkaline-powered glucose monitor with Bluetooth LE transmission. IC Role / Device Role / Timing Role: Primary 3.0V rail generator for analog front-end and microcontroller; maintains regulation as battery discharges from 1.5V to 0.8V. Use Value: Enables >2-year shelf life via 1 µA shutdown current and eliminates need for external LDO or diode OR-ing. |
Use Scenario: Low-power PIC16F15313-based environmental sensor node operating from one AA cell. IC Role / Device Role / Timing Role: Provides stable 3.0V supply to MCU core and ADC; Power Good signal triggers wake-up from deep sleep. Use Value: Delivers 300 mA burst current for RF transmission without brown-out, leveraging 1.8A peak switch capability. |
| Wireless Sensor Nodes | USB Emergency Backup Charger |
Use Scenario: Zigbee-enabled temperature/humidity sensor powered by two NiMH cells (2.4V nominal). IC Role / Device Role / Timing Role: Boosts 1.8–2.6V input to regulated 3.0V for radio transceiver and digital logic; operates down to 0.35V post-startup. Use Value: Extends usable battery range by 40% compared to non-synchronous solutions due to integrated P-MOSFET. |
Use Scenario: Portable power bank using single Li-Ion cell (3.0–4.2V) to deliver 5V USB output via external buck-boost stage. IC Role / Device Role / Timing Role: Generates intermediate 3.0V rail for system management IC and fuel gauge; enables accurate battery monitoring at low SOC. Use Value: Supports accurate coulomb counting below 2.5V battery voltage - critical for state-of-charge estimation in backup applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS61200DRCT | Fixed 3.0V output; 0.3V min startup; 1.2A peak switch; no true disconnect - only high-Z output in shutdown. | Lacks true output disconnect; higher quiescent current (5 µA) limits ultra-low-power standby use. | Prefer when lower cost and wider input range (0.3–5.5V) outweigh need for battery isolation. |
| Analog Devices ADP1612ARMZ-R7 | Adjustable output only; 1.8V–5.5V range; 2A peak switch; 650 kHz switching; no Power Good pin. | Requires external feedback resistors; lacks PG signal for MCU sequencing; larger MSOP-8 footprint (3×3 mm). | Prefer when adjustable output and higher peak current justify added BOM complexity and missing PG functionality. |
Compared with TPS61200DRCT and ADP1612ARMZ-R7, the MCP1642DT-30I/MS uniquely combines fixed 3.0V output, true output disconnect, 1 µA shutdown, and integrated PG - making it optimal for battery-sensitive PIC® MCU and medical sensor applications where rail integrity and zero-backfeed are mandatory.
Availability
MCP1642DT-30I/MS is available at Aetrix Electronics and suitable for portable medical sensors, PIC® MCU power rails, wireless sensor nodes, and USB emergency backup chargers requiring stable component supply across extended production lifecycles.
Supply support for MCP1642DT-30I/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 manufacturer specializing in microcontrollers, analog devices, and power management ICs for embedded control applications.
The MCP1642B/D family was designed specifically for ultra-low-voltage battery-powered systems - delivering high efficiency from single-cell alkaline, Li-Ion, or NiMH sources while maintaining compact size and minimal external components.
FAQ
What is the minimum input voltage required for MCP1642DT-30I/MS to start regulating 3.0V output?
The MCP1642DT-30I/MS starts regulation at 0.65V typical (0.8V max) with a 1 mA resistive load, as specified in the Electrical Characteristics table. This enables operation from nearly depleted single-cell alkaline or NiMH batteries. Once started, it sustains regulation down to 0.35V input at light load - a key advantage over competing boost regulators that require ≥0.9V startup.
Does MCP1642DT-30I/MS support true output disconnect during shutdown?
Yes, MCP1642DT-30I/MS is part of the MCP1642B series, which implements true output disconnect: when EN is pulled low, the internal P-channel MOSFET turns off completely, removing the DC path between VIN and VOUT. This prevents battery discharge through load leakage and is confirmed in Section 4.1.1 and Table 4-1 of the datasheet.
What package type and thermal characteristics does MCP1642DT-30I/MS use?
MCP1642DT-30I/MS uses the 8-lead MSOP package (3.0 mm × 4.9 mm) with an exposed thermal pad (EP). Its junction-to-ambient thermal resistance (θJA) is 211°C/W. The EP must be soldered to a PCB copper plane tied to SGND/PGND to achieve rated performance and avoid thermal shutdown under sustained 300 mA load.
Can MCP1642DT-30I/MS be used with a 5.0V output requirement?
No - MCP1642DT-30I/MS is a fixed 3.0V output variant. For 5.0V output, select MCP1642DT-50I/MS (also MSOP-8, same family). The "30" in the part number explicitly denotes the 3.0V fixed output option; adjustable versions use "ADJ", and other fixed options use "18", "33", or "50" suffixes.
How does the Power Good (PG) pin of MCP1642DT-30I/MS behave during startup and fault conditions?
The PG pin is an open-drain output that goes low when VOUT falls below 90% of 3.0V (i.e., 2.7V), with 3% hysteresis. During startup, PG asserts high after VOUT reaches 2.7V and remains high until regulation is lost. PG delay is 600 µs, and response time is 250 µs - enabling reliable MCU reset or sequencing without external timers.
MCP1642DT-30I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.65V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 800mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
MCP1642DT-30I/MS FAQ
1.How can I place an order for MCP1642DT-30I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP1642DT-30I/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 MCP1642DT-30I/MS reliable?
The price and inventory of MCP1642DT-30I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP1642DT-30I/MS is usually 5 days.
3.What payment methods are accepted for MCP1642DT-30I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP1642DT-30I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP1642DT-30I/MS?
MCP1642DT-30I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP1642DT-30I/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 MCP1642DT-30I/MS?
For technical support, including MCP1642DT-30I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP1642DT-30I/MS requirements.
6.How does Aetrix verify that MCP1642DT-30I/MS is sourced from the original manufacturer or authorized distributors?
All MCP1642DT-30I/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 MCP1642DT-30I/MS meets industry standards.
7.What is the process for return or replacement of MCP1642DT-30I/MS?
All MCP1642DT-30I/MS units undergo pre-shipment inspection (PSI). If there is an issue with MCP1642DT-30I/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 MCP1642DT-30I/MS part is unused and in its original packaging.
Return procedure for MCP1642DT-30I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP1642DT-30I/MS Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
