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Microchip Technology TC1313-1H0EMFTR
- Part No.:
- TC1313-1H0EMFTR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1313-1H0EMFTR.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,702
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Product details
Overview
TC1313-1H0EMFTR 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 1.8 V (adjustable buck output) and 3.3 V (fixed LDO output), operates from 2.7–5.5 V input, achieves >90% efficiency at heavy load, and supports automatic PWM-to-PFM mode transition for ultra-low quiescent current (57 µA typical). It is designed for portable battery-powered systems requiring tightly regulated dual rails.
For engineers reviewing the TC1313-1H0EMFTR datasheet, TC1313-1H0EMFTR pinout, TC1313-1H0EMFTR application, or TC1313-1H0EMFTR equivalent, key selection criteria include independent shutdown control per rail, 2.0 MHz fixed-frequency switching with light-load PFM mode, 137 mV typical LDO dropout at 200 mA, internal compensation, and -40°C to +125°C junction temperature operation.
Technical Context
The TC1313-1H0EMFTR 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 (1.6–2.4 MHz range) under heavy load and transitioning automatically to pulse-frequency modulation (PFM) below ~30 mA load to maintain 38 µA typical quiescent current. Its feedback reference is 0.8 V (±2.5% tolerance), supporting adjustable outputs from 0.8 V to 4.5 V.
The integrated 300 mA LDO features fixed-output options (1.5 V, 1.8 V, 2.5 V, 3.3 V), 25 ppm/°C temperature coefficient, 62 dB PSRR at 100 Hz, and 1.8 µV/√Hz output noise. It requires only a single 1 µF ceramic output capacitor and exhibits 137 mV typical dropout voltage at 200 mA - confirmed across -40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V) and USB 5 V supply without external pre-regulation. |
| Buck Output Current | 500 mA continuous - sufficient for low-power microcontrollers or FPGA core rails. |
| LDO Output Current | 300 mA continuous - powers I/O peripherals, sensors, or communication interfaces. |
| Quiescent Current | 57 µA typical total device IQ - enables multi-week standby in always-on portable devices. |
| Switching Frequency | 2.0 MHz fixed (1.6–2.4 MHz) - allows use of small 4.7 µH inductors and compact 4.7 µF input/output capacitors. |
| LDO Dropout Voltage | 137 mV typical @ 200 mA - minimizes power loss when VIN2 is only marginally above VOUT2 (e.g., 3.47 V → 3.3 V). |
| Operating Junction Temp | -40°C to +125°C - qualified for automotive cabin and industrial edge computing environments. |
Pinout & Package
TC1313-1H0EMFTR is housed in a 3×3 mm, 10-pin DFN package with exposed thermal pad (EP), optimized for high thermal conductivity and space-constrained PCB layouts. The EP must be soldered to AGND for thermal and electrical integrity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN2) | LDO shutdown control input | Active-high logic input (>45% VIN); enables/disables 300 mA LDO independently of buck stage. |
| 2 (VIN2) | LDO input supply | Accepts same input as VIN1 (2.7–5.5 V); must be routed with minimal trace length to reduce noise coupling. |
| 3 (VOUT2) | LDO regulated output | Fixed 3.3 V output; requires ≥1 µF ceramic capacitor to AGND for stability and transient response. |
| 4 (NC) | No-connect terminal | Not internally bonded; must remain unconnected on PCB. |
| 5 (AGND) | Analog ground reference | Reference node for feedback circuitry; must be isolated from noisy PGND and tied to EP via multiple vias. |
| 6 (VFB/VOUT1) | Buck feedback or output sense | For adjustable configuration: connects to resistor divider; for fixed 1.8 V version (TC1313-1H0EMFTR), functions as output node. |
| 7 (SHDN1) | Buck shutdown control input | Active-high logic input (>45% VIN); provides independent enable/disable of 500 mA buck regulator. |
| 8 (VIN1) | Buck input supply | Main power input for synchronous buck stage; shares source with VIN2 but requires separate local decoupling. |
| 9 (LX) | Switch node | High-slew-rate connection to external inductor; demands shortest possible trace and tight loop area to minimize EMI. |
| 10 (PGND) | Power ground return | Return path for high-current buck switching; must be partitioned from AGND and connected at single point near EP. |
Key Features
| Feature | Design Value |
|---|---|
| Independent shutdown control | Separate SHDN1 and SHDN2 pins allow sequenced power-up/down of buck and LDO rails - critical for FPGA or SoC boot sequencing. |
| Internally compensated buck | Eliminates need for external compensation network, reducing BOM count and layout sensitivity for 1.8 V adjustable output. |
| Automatic PWM-to-PFM transition | Seamlessly shifts between high-efficiency 2.0 MHz PWM (≥80 mA load) and ultra-low-IQ PFM (<30 mA), no external control required. |
| Low-noise LDO output | 1.8 µV/√Hz integrated noise and 62 dB PSRR at 100 Hz ensure clean supply for ADCs, RF front-ends, or precision analog circuits. |
| Robust protection suite | Includes undervoltage lockout (2.55 V nominal), overtemperature shutdown (165°C), and short-circuit protection on both outputs. |
Applications
| Portable Medical Instrumentation | USB-Powered Edge Sensor Node |
|---|---|
Use Scenario: Handheld glucose meter with LCD display, Bluetooth LE radio, and precision analog front-end. IC Role / Device Role / Timing Role: Dual-rail power source: 1.8 V buck powers ARM Cortex-M0+ MCU core; 3.3 V LDO supplies BLE transceiver and sensor bias. Use Value: 57 µA total quiescent current extends battery life beyond 6 months on CR2032; 137 mV LDO dropout enables direct 3.3 V regulation from 3.47 V battery residual voltage. |
Use Scenario: Industrial temperature/humidity sensor node powered solely via USB 5 V port. IC Role / Device Role / Timing Role: Primary DC-DC converter generating 1.8 V for ultra-low-power MCU and 3.3 V for digital sensor interface and EEPROM. Use Value: 2.0 MHz switching frequency permits miniature 2.0 × 1.6 mm inductor; internal compensation eliminates tuning effort during design-in. |
| Cellular IoT Modem Module | Wearable Health Tracker |
Use Scenario: LTE-M/NB-IoT module with integrated SIM, GNSS receiver, and cellular baseband processor. IC Role / Device Role / Timing Role: Supplies 1.8 V core voltage to modem SoC and 3.3 V I/O rail for antenna switch control and flash memory interface. Use Value: Independent SHDN1/SHDN2 pins enable dynamic rail gating during sleep modes; -40°C to +125°C rating ensures reliability in vehicle-mounted deployments. |
Use Scenario: Compact wrist-worn tracker with optical heart-rate sensor, accelerometer, and OLED display. IC Role / Device Role / Timing Role: Generates 1.8 V for sensor hub MCU and 3.3 V for OLED driver and photodiode amplifier chain. Use Value: 1 µF LDO output capacitor requirement reduces board area by >40% vs. legacy LDOs needing 10 µF tantalum; DFN package fits <8 mm² footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RSBR | Triple-output PMIC (2 buck + 1 LDO); higher integration but larger 4×4 mm QFN-32 package; 1.2 MHz switching frequency. | Targets complex processors requiring three rails; lacks independent LDO shutdown; requires external compensation for buck stages. | Choose for multi-rail SoC designs where third rail is needed; avoid if board space or independent LDO control is critical. |
| RT8059ZSP | Dual buck-only regulator (no LDO); 2 A per channel; 3 MHz switching; requires external compensation and more external components. | Optimized for high-current digital loads only; unsuitable for noise-sensitive analog peripherals requiring LDO cleanliness. | Prefer when both rails demand high current and low noise is not required; reject when mixed analog/digital supply integrity is mandatory. |
Compared with TPS65023RSBR and RT8059ZSP, TC1313-1H0EMFTR uniquely balances ultra-low quiescent current, independent rail control, LDO noise performance, and minimal external component count - making it optimal for space- and battery-limited dual-rail embedded systems.
Availability
TC1313-1H0EMFTR is available at Aetrix Electronics and suitable for cellular phones, USB-powered devices, and handheld medical instruments requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TC1313-1H0EMFTR 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, FPGA, and power management solutions, emphasizing reliability, longevity, and broad ecosystem support for industrial and automotive markets.
TC1313-1H0EMFTR belongs to Microchip's TC13xx dual-output regulator family, engineered specifically for portable and battery-operated applications demanding high efficiency, low quiescent current, and minimal external component count.
FAQ
What output voltages does the TC1313-1H0EMFTR provide?
The TC1313-1H0EMFTR provides two regulated outputs: a 1.8 V adjustable buck regulator (set via internal feedback network for this variant) and a fixed 3.3 V LDO output. The buck stage supports 0.8 V to 4.5 V via external resistors in other variants, but TC1313-1H0EMFTR is factory-configured for 1.8 V. The LDO offers fixed 1.5 V, 1.8 V, 2.5 V, or 3.3 V options - this part is the 3.3 V version.
Does the TC1313-1H0EMFTR require external compensation components?
No, the TC1313-1H0EMFTR does not require external compensation components. Both the 500 mA synchronous buck regulator and the 300 mA LDO are internally compensated, eliminating the need for external RC networks or type-II/III compensators - simplifying layout and improving design robustness across operating conditions.
How does the TC1313-1H0EMFTR manage efficiency across varying load conditions?
The TC1313-1H0EMFTR uses automatic mode transition: it operates in fixed-frequency 2.0 MHz PWM mode above ~80 mA load for high efficiency (>90%) and low noise, then seamlessly shifts to PFM mode below ~30 mA to reduce quiescent current to 38 µA (buck only) or 57 µA (total device). This preserves battery life without sacrificing regulation accuracy.
What is the thermal performance of the TC1313-1H0EMFTR in its DFN package?
In the 3×3 mm DFN package with exposed pad, the TC1313-1H0EMFTR has a typical junction-to-ambient thermal resistance (θJA) of 41°C/W on a 4-layer PCB with internal ground plane and two thermal vias. Its overtemperature protection activates at 165°C with 10°C hysteresis, ensuring safe operation under sustained 500 mA buck + 300 mA LDO loading within ambient limits.
Can the TC1313-1H0EMFTR support independent power sequencing?
Yes, the TC1313-1H0EMFTR supports full independent power sequencing via dedicated SHDN1 (buck) and SHDN2 (LDO) pins. Each accepts active-high logic-level signals referenced to VIN, enabling precise control over turn-on/off order, delay insertion via RC networks, and dynamic rail disabling - essential for avoiding latch-up in mixed-voltage SoCs and FPGAs.
TC1313-1H0EMFTR 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:
- 1.375V, 500mA
- Voltage/Current - Output 2:
- 2.6V, 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)
TC1313-1H0EMFTR FAQ
1.How can I place an order for TC1313-1H0EMFTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-1H0EMFTR 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 TC1313-1H0EMFTR reliable?
The price and inventory of TC1313-1H0EMFTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-1H0EMFTR is usually 5 days.
3.What payment methods are accepted for TC1313-1H0EMFTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-1H0EMFTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-1H0EMFTR?
TC1313-1H0EMFTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-1H0EMFTR 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 TC1313-1H0EMFTR?
For technical support, including TC1313-1H0EMFTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-1H0EMFTR requirements.
6.How does Aetrix verify that TC1313-1H0EMFTR is sourced from the original manufacturer or authorized distributors?
All TC1313-1H0EMFTR 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 TC1313-1H0EMFTR meets industry standards.
7.What is the process for return or replacement of TC1313-1H0EMFTR?
All TC1313-1H0EMFTR units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-1H0EMFTR, 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 TC1313-1H0EMFTR part is unused and in its original packaging.
Return procedure for TC1313-1H0EMFTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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