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Microchip Technology TC1313-ZI0EMFTR
- Part No.:
- TC1313-ZI0EMFTR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1313-ZI0EMFTR.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,222
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Product details
Overview
TC1313-ZI0EMFTR 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) in a single 10-pin DFN package. It delivers adjustable (0.8–4.5 V) or fixed-output voltages (e.g., 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V) for buck and fixed 1.5–3.3 V for LDO, with 57 µA typical total quiescent current and -40°C to +125°C operating junction temperature - used in portable medical instruments requiring compact, low-noise dual-rail power.
For engineers reviewing the TC1313-ZI0EMFTR datasheet, TC1313-ZI0EMFTR pinout, TC1313-ZI0EMFTR application, or TC1313-ZI0EMFTR equivalent, key selection criteria include independent shutdown control per rail, 2.0 MHz fixed-frequency PWM mode with automatic PFM transition at light load, 137 mV typical LDO dropout at 200 mA, internal compensation, and UVLO/overtemperature/short-circuit protection.
Technical Context
The TC1313-ZI0EMFTR implements a current-mode synchronous buck regulator with integrated P-channel and N-channel MOSFETs (RDS(on) = 450 mΩ each), operating at 2.0 MHz (±0.4 MHz) under heavy load and transitioning automatically to PFM mode below ~30 mA load to maintain ultra-low IQ. Its LDO stage uses a PMOS pass element with 137 mV typical dropout at 200 mA and supports ceramic output capacitors as small as 1 µF.
Both regulators feature independent logic-level shutdown inputs (SHDN1/SHDN2) with 15% VIN low threshold and 45% VIN high threshold, undervoltage lockout (2.55 V nominal, 200 mV hysteresis), and thermal shutdown at 165°C (10°C hysteresis). The device shares AGND and PGND pins but isolates analog and power ground paths to minimize noise coupling between buck switching and LDO output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Output Current | 500 mA max - supports processor core rails with high transient response and >90% efficiency at full load |
| LDO Output Current | 300 mA max - powers auxiliary circuits (e.g., sensors, I/O) with minimal external components |
| Total Quiescent Current | 57 µA typical - enables multi-day battery life in always-on portable devices |
| Buck Switching Frequency | 2.0 MHz fixed (1.6–2.4 MHz range) - allows use of small 4.7 µH inductors and reduces EMI filtering burden |
| LDO Dropout Voltage | 137 mV typical @ 200 mA - minimizes power loss when input is close to output (e.g., 3.3 V → 3.3 V rail) |
| Operating Junction Temp | -40°C to +125°C - qualified for automotive cabin and industrial edge applications without derating |
| UVLO Threshold | 2.55 V ±0.15 V - prevents erratic startup during brownout conditions in USB- or battery-powered systems |
Pinout & Package
TC1313-ZI0EMFTR is housed in a 3×3 mm, 10-pin DFN package with exposed thermal pad (EP), optimized for high-power-density PCB layouts. The EP must be soldered to AGND for thermal performance and electrical reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN2 (Pin 1) | LDO shutdown control input | Active-high logic input; drives LDO into zero-current shutdown when pulled <15% VIN |
| VIN2 (Pin 2) | LDO input supply | Accepts same input source as VIN1; requires local 4.7 µF decoupling for ripple suppression |
| VOUT2 (Pin 3) | LDO regulated output | Delivers fixed 1.5/1.8/2.5/3.3 V; requires ≥1 µF ceramic capacitor to AGND for stability |
| NC (Pin 4) | No-connect terminal | Must remain unconnected; no internal circuitry attached |
| AGND (Pin 5) | Analog ground reference | Reference node for feedback and control circuitry; separate from PGND to reduce noise coupling |
| VFB/VOUT1 (Pin 6) | Buck feedback or output sense | Connects to voltage divider midpoint for adjustable outputs; ties directly to VOUT1 for fixed versions |
| SHDN1 (Pin 7) | Buck shutdown control input | Independent enable/disable of buck stage; compatible with microcontroller GPIO |
| VIN1 (Pin 8) | Buck input supply | Input range 2.7–5.5 V; must be routed short and low-inductance to LX and PGND |
| LX (Pin 9) | Buck switch node | High-slew-rate switching node; connects directly to inductor; requires minimum trace area |
| PGND (Pin 10) | Power ground return | Carries high di/dt buck currents; must connect to dedicated low-impedance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Independent shutdown per regulator | Enables dynamic power sequencing: e.g., keep LDO active while buck sleeps to maintain real-time clock supply |
| Automatic PWM-to-PFM mode transition | Eliminates need for external load monitoring; maintains regulation down to µA loads with <38 µA buck IQ |
| Internally compensated buck loop | Reduces BOM count by removing external compensation network; supports stable operation with 4.7 µH/4.7 µF LC |
| Low-noise LDO with 62 dB PSRR @ 100 Hz | Suppresses switching noise from buck stage, enabling clean analog/RF supply rails without additional filtering |
| Thermal and short-circuit protection | Self-protecting operation prevents field failure during overloads or layout errors; auto-recovery after fault removal |
Applications
| Portable Medical Sensors | USB-Powered Test Equipment |
|---|---|
|
Use Scenario: Handheld blood glucose meter with LCD display, Bluetooth LE radio, and precision ADC. IC Role / Device Role / Timing Role: TC1313-ZI0EMFTR supplies 1.8 V to MCU core (buck) and 3.3 V to BLE transceiver + sensor interface (LDO). Use Value: Dual-rail integration eliminates discrete DC/DC + LDO solution; 137 mV LDO dropout enables 3.3 V output from 3.6 V Li-ion, maximizing battery runtime. |
Use Scenario: Compact oscilloscope module powered solely via USB 2.0 (5 V, 500 mA). IC Role / Device Role / Timing Role: TC1313-ZI0EMFTR generates 1.2 V for FPGA fabric and 2.5 V for ADC reference (buck + LDO). Use Value: 2.0 MHz switching frequency allows sub-5 mm² power stage footprint; internal compensation avoids layout-sensitive compensation tuning. |
| Industrial Handheld Terminals | Wearable Health Monitors |
|
Use Scenario: Ruggedized barcode scanner with cold-cathode backlight and 2D imager ASIC. IC Role / Device Role / Timing Role: TC1313-ZI0EMFTR delivers 3.3 V to imager (LDO) and 1.5 V to ARM Cortex-M4 (buck), both independently controllable. Use Value: Independent SHDN1/SHDN2 pins enable precise power sequencing - e.g., power imager before MCU to reduce wake latency. |
Use Scenario: ECG patch with ultra-low-power MCU, analog front-end, and BLE radio operating on coin cell. IC Role / Device Role / Timing Role: TC1313-ZI0EMFTR provides 1.2 V to MCU (buck) and 1.5 V to analog signal chain (LDO), both in deep-sleep mode. Use Value: 57 µA total IQ extends coin-cell life beyond 6 months; PFM mode ensures regulation even at 10 µA load without voltage droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBR | Triple-output (2 buck + 1 LDO); higher 1.2 A buck current; 2.25 MHz switching; requires external compensation | Supports more complex SoC power trees (e.g., DDR I/O + core + PLL); larger 4×4 QFN package | Choose TPS65023BRSBR when >500 mA buck current or third rail is required; not drop-in due to pinout and compensation differences |
| RT8070ZSP | Dual buck only (no integrated LDO); 600 mA per channel; 1.5 MHz; external feedback resistors required | Suitable for digital-only dual-rail systems; lacks low-noise auxiliary rail for analog/RF sections | Choose RT8070ZSP when both rails are switching and LDO noise immunity is unnecessary; requires redesign for LDO functionality |
Compared with TPS65023BRSBR and RT8070ZSP, TC1313-ZI0EMFTR uniquely balances integration (buck + LDO), ultra-low IQ, and minimal external components - making it optimal for space-constrained, battery-operated dual-rail systems where analog/RF cleanliness matters.
Availability
TC1313-ZI0EMFTR is available at Aetrix Electronics and suitable for portable medical instruments, USB-powered test equipment, and industrial handheld terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TC1313-ZI0EMFTR 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 microcontrollers, analog, and Flash-IP solutions, emphasizing reliability, longevity, and design-in support for industrial and automotive markets.
The TC1313 product line was designed specifically for cost-sensitive, space-constrained portable electronics needing dual-voltage regulation with minimal external components and robust protection features - targeting battery-powered instrumentation and consumer wearables.
FAQ
What output voltage options does TC1313-ZI0EMFTR support?
TC1313-ZI0EMFTR supports adjustable buck output from 0.8 V to 4.5 V (via external resistor divider on VFB/VOUT1) and fixed buck outputs including 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V. The LDO output is fixed at 1.5 V, 1.8 V, 2.5 V, or 3.3 V depending on factory configuration - TC1313-ZI0EMFTR is specified for 1.5 V LDO output per Microchip's ordering matrix and datasheet revision DS21974B.
Does TC1313-ZI0EMFTR require external compensation components?
No, TC1313-ZI0EMFTR does not require external compensation components for either regulator. Both the synchronous buck and LDO stages are internally compensated, enabling stable operation with only standard input/output capacitors and an inductor - simplifying layout and reducing BOM count compared to controllers requiring external Type-II or Type-III compensation networks.
How does TC1313-ZI0EMFTR manage efficiency at light load?
TC1313-ZI0EMFTR automatically transitions its buck regulator from fixed-frequency PWM mode (>30 mA load) to pulse-frequency modulation (PFM) mode at light loads, reducing quiescent current to 38 µA typical. This preserves battery life in standby without sacrificing regulation - unlike forced-PWM converters that waste power at low load. The LDO remains active with 44 µA IQ during buck sleep.
What is the thermal performance of TC1313-ZI0EMFTR in the DFN package?
In the 3×3 mm DFN package with exposed pad soldered to AGND, TC1313-ZI0EMFTR has a typical junction-to-ambient thermal resistance (θJA) of 41°C/W on a 4-layer board with internal ground plane and two thermal vias. This enables full 500 mA buck + 300 mA LDO operation up to +85°C ambient without derating, and supports continuous operation at 125°C junction temperature with appropriate board-level heatsinking.
Can TC1313-ZI0EMFTR's buck and LDO outputs be powered from different input sources?
No - TC1313-ZI0EMFTR requires VIN1 and VIN2 to be supplied from the same input source, as stated in Note 8 of the datasheet. The device is not designed for split-input operation; connecting separate supplies risks violating absolute maximum ratings on PGND–AGND differential voltage (±0.3 V) and may cause latch-up or premature failure.
TC1313-ZI0EMFTR 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:
- Adj, 500mA
- Voltage/Current - Output 2:
- 2.5V, 300mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
TC1313-ZI0EMFTR FAQ
1.How can I place an order for TC1313-ZI0EMFTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-ZI0EMFTR 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 TC1313-ZI0EMFTR reliable?
The price and inventory of TC1313-ZI0EMFTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-ZI0EMFTR is usually 5 days.
3.What payment methods are accepted for TC1313-ZI0EMFTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-ZI0EMFTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-ZI0EMFTR?
TC1313-ZI0EMFTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-ZI0EMFTR 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 TC1313-ZI0EMFTR?
For technical support, including TC1313-ZI0EMFTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-ZI0EMFTR requirements.
6.How does Aetrix verify that TC1313-ZI0EMFTR is sourced from the original manufacturer or authorized distributors?
All TC1313-ZI0EMFTR 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 TC1313-ZI0EMFTR meets industry standards.
7.What is the process for return or replacement of TC1313-ZI0EMFTR?
All TC1313-ZI0EMFTR units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-ZI0EMFTR, 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 TC1313-ZI0EMFTR part is unused and in its original packaging.
Return procedure for TC1313-ZI0EMFTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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