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Microchip Technology TC1303C-PI0EMFTR
- Part No.:
- TC1303C-PI0EMFTR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1303C-PI0EMFTR.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,247
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Product details
Overview
TC1303C-PI0EMFTR from Microchip Technology is a dual-output power management IC integrating a 500 mA synchronous buck regulator and a 300 mA low-dropout linear regulator (LDO), with power-good monitoring of both outputs. It delivers 1.8 V @ 500 mA and 3.3 V @ 300 mA from a 2.7–5.5 V input, features 2.0 MHz fixed-frequency PWM operation, 65 µA typical quiescent current, and operates across –40°C to +125°C junction temperature - used in portable medical instruments and USB-powered devices.
For engineers reviewing the TC1303C-PI0EMFTR datasheet, TC1303C-PI0EMFTR pinout, TC1303C-PI0EMFTR application, or TC1303C-PI0EMFTR equivalent, key selection criteria include independent shutdown control for each regulator, dual-output power-good assertion with 300 ms delay, internal compensation, and compatibility with 1 µF LDO output capacitance and 4.7 µH buck inductor.
Technical Context
The TC1303C-PI0EMFTR implements a synchronous buck stage with PFM/PWM auto-transition, delivering >90% efficiency at heavy loads and ultra-low IQ in light-load conditions. Its LDO stage provides 137 mV typical dropout at 200 mA and supports standard fixed outputs (1.5 V, 1.8 V, 2.5 V, 3.3 V).
Power-good logic monitors both VOUT1 and VOUT2 simultaneously with 94% high-threshold and 89% low-threshold hysteresis, generating an open-drain PG signal with 262 ms nominal active timeout and 165 µs response delay - designed for processor reset coordination in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion (2.7 V min) and USB 5 V bus without external pre-regulation |
| Buck Output Current | 500 mA - sufficient for core voltage supply of ARM Cortex-M4/M7 microcontrollers |
| LDO Output Current | 300 mA - powers I/O peripherals, sensors, or RF front-ends requiring low-noise bias |
| Quiescent Current | 65 µA typical - enables >1-year battery life in always-on wearable sensor nodes |
| Switching Frequency | 2.0 MHz ±0.4 MHz - allows use of compact 4.7 µH inductors and reduces EMI below AM radio band |
| PG Monitoring Scope | Both VOUT1 and VOUT2 - ensures system reset only after stable dual-rail power-up, critical for mixed-signal SoCs |
| Operating Temperature | –40°C to +125°C - qualified for automotive cabin and industrial edge controller environments |
Pinout & Package
TC1303C-PI0EMFTR is housed in a 10-pin 3×3 mm DFN package with exposed thermal pad (EP), optimized for high-power-density PCB layouts and thermal performance (θJA = 41°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN2 | LDO shutdown control input | Active-high logic (>45% VIN); enables independent LDO disable for dynamic power gating |
| 2 - VIN2 | LDO input supply | Accepts same input as VIN1; requires short trace coupling to minimize noise coupling into LDO path |
| 3 - VOUT2 | LDO regulated output | Delivers fixed 3.3 V (per PI0EMFTR suffix); requires ≥1 µF ceramic capacitor to AGND for stability |
| 4 - PG | Power-good status output | Open-drain output asserting low when both VOUT1 and VOUT2 are within ±6% regulation window |
| 5 - AGND | Analog ground reference | Must be connected to dedicated analog ground plane; separates noise-sensitive feedback paths from power return |
| 6 - PGND | Power ground return | High-current return for buck switch node; routed separately from AGND to prevent ground bounce |
| 7 - LX | Buck switch node | Connects to external 4.7 µH inductor; requires tight loop area with VIN1 and PGND to minimize EMI |
| 8 - VIN1 | Buck input supply | Primary input for switching regulator; shares source with VIN2 but must be decoupled locally with 4.7 µF |
| 9 - SHDN1 | Buck shutdown control input | Active-high logic (>45% VIN); allows independent buck disable while LDO remains active |
| 10 - VFB1/VOUT1 | Buck feedback or output | Configured as VOUT1 (fixed 1.8 V per PI0EMFTR suffix); connects directly to 1.8 V rail for closed-loop regulation |
Key Features
| Feature | Design Value |
|---|---|
| Independent shutdown control | SHDN1 and SHDN2 pins enable selective power-down of buck or LDO - essential for multi-mode system power sequencing |
| Dual-output power-good monitoring | PG asserts only when both 1.8 V buck and 3.3 V LDO outputs meet regulation thresholds - prevents premature processor boot |
| Internal compensation | Eliminates need for external compensation network - reduces BOM count and layout sensitivity for buck and LDO loops |
| Low-LDO dropout voltage | 137 mV typical at 200 mA - sustains 3.3 V output down to 3.437 V input, extending usable battery range |
| Thermal and overcurrent protection | Integrated thermal shutdown at 165°C and cycle-by-cycle current limiting on buck stage - ensures robustness under fault conditions |
Applications
| Portable Medical Sensors | USB-Powered Test Equipment |
|---|---|
Use Scenario: Continuous glucose monitor with BLE radio and analog front-end. IC Role / Device Role / Timing Role: Dual-rail power source: 1.8 V for MCU core and 3.3 V for ADC/RF transceiver. Use Value: 65 µA quiescent current extends coin-cell battery life beyond 18 months; dual PG monitoring prevents data corruption during brown-out recovery. | Use Scenario: Handheld oscilloscope powered via USB-C PD (5 V). IC Role / Device Role / Timing Role: Primary power converter generating 1.8 V digital rail and 3.3 V analog bias from 5 V bus. Use Value: 2.0 MHz switching frequency enables compact 3×3 mm layout; 137 mV LDO dropout maintains 3.3 V output even as USB voltage sags to 4.75 V. |
| Industrial Edge Controller | Wearable Health Tracker |
Use Scenario: DIN-rail mounted PLC module operating in uncontrolled ambient (-40°C to +85°C). IC Role / Device Role / Timing Role: Dual-output PMIC supplying 1.8 V FPGA core and 3.3 V I/O bank from 5 V backplane. Use Value: –40°C to +125°C junction rating ensures reliability; independent SHDN1/SHDN2 supports FPGA partial reconfiguration power gating. | Use Scenario: Fitness band with optical heart-rate sensor and Bluetooth LE SoC. IC Role / Device Role / Timing Role: Single-chip power solution for 1.8 V SoC core and 3.3 V LED driver/sensor bias. Use Value: 1 µF LDO output capacitor minimizes footprint; PG delay aligns with SoC reset timing requirements (300 ms typical). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826-3302E/DB | Single 3.3 V LDO only; no buck stage or power-good monitoring | Cannot replace TC1303C-PI0EMFTR in dual-rail systems; suitable only for auxiliary bias where main rail is externally supplied | Select only if existing design already provides 1.8 V rail and only requires 3.3 V LDO backup |
| TPS65023RSBR | Triple-output PMIC (2 buck + 1 LDO); higher IQ (120 µA), larger 4×4 mm QFN package | Over-spec'd for dual-rail needs; adds unnecessary complexity and cost where only two rails are required | Prefer TC1303C-PI0EMFTR for space-constrained dual-rail designs needing minimal IQ and small footprint |
Compared with MCP1826-3302E/DB and TPS65023RSBR, TC1303C-PI0EMFTR uniquely integrates buck+LDO+PG in a 3×3 mm DFN with 65 µA IQ - offering optimal balance of integration, efficiency, and size for portable dual-voltage systems.
Availability
TC1303C-PI0EMFTR is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered test equipment, and industrial edge controllers requiring stable component supply and long-term production continuity.
Supply support for TC1303C-PI0EMFTR 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, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The TC1303 family is designed specifically for space-constrained, battery-operated devices requiring efficient dual-rail power conversion - emphasizing low quiescent current, internal compensation, and integrated power sequencing support.
FAQ
What output voltages does the TC1303C-PI0EMFTR provide?
The TC1303C-PI0EMFTR provides a fixed 1.8 V output from its synchronous buck regulator (VOUT1) and a fixed 3.3 V output from its low-dropout linear regulator (VOUT2), as indicated by the "PI0EMFTR" part suffix per Microchip's ordering guide. Both outputs are internally compensated and require no external feedback resistors.
How does the power-good (PG) function operate on the TC1303C-PI0EMFTR?
The TC1303C-PI0EMFTR's PG pin is an open-drain output that asserts low only when both VOUT1 and VOUT2 are within their regulation windows (94% to 96% of nominal for rising, 89% to 92% for falling). It includes a 300 ms delay feature used for reliable processor reset timing, with a nominal active timeout of 262 ms per DS21949C.
Can the TC1303C-PI0EMFTR support independent enable/disable of its two regulators?
Yes - the TC1303C-PI0EMFTR provides separate shutdown inputs: SHDN1 controls the buck regulator and SHDN2 controls the LDO. Each accepts active-high logic (>45% VIN), enabling precise power sequencing, dynamic rail gating, and low-power standby modes without affecting the other output.
What is the minimum output capacitance required for stable operation of the TC1303C-PI0EMFTR?
The TC1303C-PI0EMFTR requires a minimum 1 µF ceramic capacitor on the VOUT2 (LDO) pin and a minimum 4.7 µF ceramic capacitor on the VOUT1 (buck) output, as specified in DS21949C-page 5 typical application circuits. The buck stage also requires a 4.7 µH inductor and input 4.7 µF capacitor for stable 2.0 MHz operation.
Does the TC1303C-PI0EMFTR include thermal protection?
Yes - the TC1303C-PI0EMFTR incorporates thermal shutdown protection that activates at +165°C junction temperature, with 10°C hysteresis. This safeguard prevents permanent damage during sustained overload or poor PCB thermal design, and is documented in DS21949C-page 7 Electrical Characteristics.
TC1303C-PI0EMFTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- 1.8V, 500mA
- Voltage/Current - Output 2:
- 2.5V, 300mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
TC1303C-PI0EMFTR FAQ
1.How can I place an order for TC1303C-PI0EMFTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1303C-PI0EMFTR 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 TC1303C-PI0EMFTR reliable?
The price and inventory of TC1303C-PI0EMFTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1303C-PI0EMFTR is usually 5 days.
3.What payment methods are accepted for TC1303C-PI0EMFTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1303C-PI0EMFTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1303C-PI0EMFTR?
TC1303C-PI0EMFTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1303C-PI0EMFTR 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 TC1303C-PI0EMFTR?
For technical support, including TC1303C-PI0EMFTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1303C-PI0EMFTR requirements.
6.How does Aetrix verify that TC1303C-PI0EMFTR is sourced from the original manufacturer or authorized distributors?
All TC1303C-PI0EMFTR 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 TC1303C-PI0EMFTR meets industry standards.
7.What is the process for return or replacement of TC1303C-PI0EMFTR?
All TC1303C-PI0EMFTR units undergo pre-shipment inspection (PSI). If there is an issue with TC1303C-PI0EMFTR, 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 TC1303C-PI0EMFTR part is unused and in its original packaging.
Return procedure for TC1303C-PI0EMFTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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