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Microchip Technology TC1313-VD0EMF
- Part No.:
- TC1313-VD0EMF
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1313-VD0EMF.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,076
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Product details
Overview
TC1313-VD0EMF 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 (e.g., 1.8 V, 3.3 V) buck output and fixed LDO outputs (1.5 V, 1.8 V, 2.5 V, 3.3 V), with 57 µA typical total quiescent current, 2.0 MHz fixed-frequency PWM operation under heavy load, and automatic PWM-to-PFM transition for battery-powered efficiency - deployed in USB-powered devices and handheld medical instruments.
For engineers reviewing the TC1313-VD0EMF datasheet, TC1313-VD0EMF pinout, TC1313-VD0EMF application, or TC1313-VD0EMF equivalent, key selection criteria include independent shutdown control per rail, 137 mV typical LDO dropout at 200 mA, internal compensation eliminating external loop components, -40°C to +125°C junction temperature rating, and UVLO/overtemperature/short-circuit protection across both outputs.
Technical Context
The TC1313-VD0EMF 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 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 defined VIH/VIL thresholds (≥45%/≤15% of VIN), 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 return paths to minimize noise coupling between rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Output Current | 500 mA max - supports processor core rail with high current demand and wide input range (2.7–5.5 V). |
| LDO Output Current | 300 mA max - powers auxiliary circuits (e.g., sensors, I/O) with minimal external components (1 µF ceramic cap). |
| Total Quiescent Current | 57 µA typical - enables multi-day battery life in standby mode for portable medical and USB devices. |
| Buck Switching Frequency | 2.0 MHz fixed (1.6–2.4 MHz range) - allows use of compact 4.7 µH inductors and reduces EMI filtering burden. |
| LDO Dropout Voltage | 137 mV typical @ 200 mA - minimizes power loss when input margin is tight (e.g., Li-ion 3.6 V → 3.3 V rail). |
| Operating Junction Temp | -40°C to +125°C - qualified for industrial and automotive-adjacent environments without derating. |
| UVLO Threshold | 2.55 V ±0.15 V - prevents erratic startup during brown-out conditions in battery-fed systems. |
Pinout & Package
TC1313-VD0EMF is housed in a 3×3 mm, 10-pin DFN package with exposed thermal pad (EP), optimized for space-constrained portable designs. The EP must be soldered to AGND for thermal performance and electrical reference integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN2 (Pin 1) | LDO enable control | Active-high logic input; >45% VIN enables LDO, <15% VIN disables it - enables independent power sequencing. |
| VIN2 (Pin 2) | LDO input supply | Accepts 2.7–5.5 V; must be short-traced to VIN1 to minimize noise coupling into analog ground. |
| VOUT2 (Pin 3) | LDO regulated output | Fixed-voltage output (e.g., 3.3 V); requires ≥1 µF ceramic capacitor to AGND for stability and transient response. |
| NC (Pin 4) | No connection | Not bonded internally - leave unconnected; no routing or thermal relief required. |
| AGND (Pin 5) | Analog reference ground | Low-noise ground return for feedback and control circuitry; must be isolated from PGND except at single-point tie to EP. |
| VFB/VOUT1 (Pin 6) | Buck feedback or output | Configurable: for adjustable versions, connects to resistor divider; for fixed versions (like TC1313-VD0EMF), directly ties to VOUT1 node. |
| SHDN1 (Pin 7) | Buck enable control | Independent active-high shutdown - allows dynamic rail disable (e.g., suspend CPU core while keeping I/O powered). |
| VIN1 (Pin 8) | Buck input supply | Main power input (2.7–5.5 V); shares source with VIN2 but routed separately to limit switching noise injection. |
| LX (Pin 9) | Switch node | High-slew-rate node connecting to inductor; requires shortest possible trace to minimize EMI and voltage spikes. |
| PGND (Pin 10) | Power ground return | High-current return path for buck switch and LDO pass element; must route away from AGND-sensitive traces. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-regulator architecture | Eliminates need for two discrete regulators - reduces BOM count, PCB area, and design validation effort for dual-rail systems. |
| Automatic PWM-to-PFM mode transition | Maintains regulation down to microamp loads without external mode-control logic - critical for always-on sensor nodes. |
| Internally compensated buck loop | Removes requirement for external compensation network - simplifies layout and improves production yield consistency. |
| Exposed thermal pad (EP) | Reduces θJA to 41°C/W on 4-layer board - enables full 500 mA buck output without forced air or heatsink in compact enclosures. |
| Independent shutdown per rail | Supports flexible power sequencing (e.g., bring up LDO first for bias, then enable buck for core) - essential for FPGA and SoC applications. |
Applications
| USB-Powered Devices | Handheld Medical Instruments |
|---|---|
Use Scenario: Portable diagnostic tools (e.g., pulse oximeters, glucose meters) powered via USB 5 V input requiring clean 3.3 V for MCU and 1.8 V for ADC interface. IC Role / Device Role / Timing Role: TC1313-VD0EMF provides tightly regulated dual rails: buck generates 1.8 V core supply, LDO delivers low-noise 3.3 V for analog front-end. Use Value: 1.8 µV/√Hz LDO output noise and 137 mV dropout ensure accurate sensor readings and extended battery runtime between charges. | Use Scenario: Battery-operated ultrasound probes with real-time signal processing demanding stable 1.2 V for DSP core and 2.5 V for transceiver bias. IC Role / Device Role / Timing Role: TC1313-VD0EMF's buck supplies 1.2 V at 500 mA with <8 mVPP ripple; LDO delivers 2.5 V with 62 dB PSRR at 100 Hz to reject switching noise. Use Value: Dual independent shutdown allows deep-sleep mode where only real-time clock remains active - reducing system IQ to sub-100 µA. |
| Cellular Phones | Portable Computers |
Use Scenario: Feature phones with baseband processor and display backlight requiring 1.5 V core and 3.3 V I/O voltage from single-cell Li-ion (2.7–4.2 V). IC Role / Device Role / Timing Role: TC1313-VD0EMF buck operates in 100% duty cycle mode at low VIN to sustain 1.5 V output; LDO maintains 3.3 V rail during RF transmit bursts. Use Value: 2.0 MHz switching frequency avoids AM radio band interference; UVLO prevents malfunction during battery depletion. | Use Scenario: Ruggedized tablets using Li-poly battery (3.0–4.35 V) needing 1.8 V for memory interface and 2.5 V for camera module. IC Role / Device Role / Timing Role: TC1313-VD0EMF delivers both rails with independent enable control - enabling dynamic voltage scaling and selective subsystem power-down. Use Value: -40°C to +125°C operating range ensures reliability in outdoor deployments; thermal shutdown protects against sustained overloads. |
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 IQ (80 µA), 3.5 MHz switching, QFN-32 package | Supports more complex SoC power trees; larger footprint and higher cost | Choose when three regulated rails are required and board space permits larger package. |
| RT8059ZSP | Dual buck (no LDO), 600 mA/600 mA, 3 MHz, WDFN-10, no PFM mode | Lacks linear regulator - requires external LDO for noise-sensitive rails | Prefer when both rails are high-current digital supplies and lowest possible solution height is critical. |
Compared with TPS65023BRSBR and RT8059ZSP, TC1313-VD0EMF uniquely balances ultra-low quiescent current, integrated LDO noise suppression, and compact DFN packaging - making it optimal for cost- and size-sensitive dual-rail battery applications where one rail demands low noise and the other high efficiency.
Availability
TC1313-VD0EMF 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 consistent parametric performance across production batches.
Supply support for TC1313-VD0EMF 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 components, and power management ICs, emphasizing reliability, longevity, and ease of integration for embedded systems.
The TC1313 product line was designed specifically for portable and battery-powered applications requiring dual, independently controlled voltage rails with minimal external components and industry-leading quiescent current performance.
FAQ
What output voltage options does the TC1313-VD0EMF support?
The TC1313-VD0EMF is a fixed-output variant: its buck regulator delivers 1.8 V (VOUT1), and its LDO delivers 3.3 V (VOUT2). These values are factory-set and do not require external resistive feedback networks. The part number suffix "VD0" indicates this specific combination; other variants (e.g., VC0, VE0) offer different fixed pairings such as 1.5 V/2.5 V or 2.5 V/3.3 V.
Does the TC1313-VD0EMF require external compensation components?
No, the TC1313-VD0EMF does not require external compensation components. Both the buck regulator and LDO are internally compensated - a key design feature that eliminates the need for external capacitors or resistors in the feedback loop, reducing bill-of-materials count and improving layout simplicity and production consistency.
How does the TC1313-VD0EMF manage efficiency across varying load conditions?
The TC1313-VD0EMF maintains high efficiency across load ranges by automatically transitioning between fixed-frequency PWM mode (≥80 mA load, >90% typical efficiency) and power-saving PFM mode (<30 mA load, 38 µA typical IQ). This dual-mode operation ensures minimal battery drain during standby while delivering robust performance under active load - a critical capability for portable medical and communication devices.
What thermal considerations apply to the TC1313-VD0EMF in a 3×3 mm DFN package?
The TC1313-VD0EMF's 3×3 mm DFN package includes an exposed thermal pad (EP) that must be soldered to AGND for effective heat dissipation. With θJA = 41°C/W on a standard 4-layer board, the device sustains full 500 mA buck output at ambient temperatures up to +85°C. Thermal shutdown activates at 165°C (10°C hysteresis) to prevent damage during overload or poor airflow conditions.
Can the TC1313-VD0EMF operate with separate input sources for VIN1 and VIN2?
No - the TC1313-VD0EMF datasheet explicitly states that VIN1 and VIN2 must be supplied by the same input source (Note 8). Connecting separate supplies risks violating absolute maximum ratings and may cause latch-up or undefined behavior due to internal voltage domain interactions between the buck and LDO sections.
TC1313-VD0EMF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- 1.2V, 500mA
- Voltage/Current - Output 2:
- 3V, 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-VD0EMF FAQ
1.How can I place an order for TC1313-VD0EMF through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-VD0EMF 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-VD0EMF reliable?
The price and inventory of TC1313-VD0EMF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-VD0EMF is usually 5 days.
3.What payment methods are accepted for TC1313-VD0EMF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-VD0EMF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-VD0EMF?
TC1313-VD0EMF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-VD0EMF 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-VD0EMF?
For technical support, including TC1313-VD0EMF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-VD0EMF requirements.
6.How does Aetrix verify that TC1313-VD0EMF is sourced from the original manufacturer or authorized distributors?
All TC1313-VD0EMF 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-VD0EMF meets industry standards.
7.What is the process for return or replacement of TC1313-VD0EMF?
All TC1313-VD0EMF units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-VD0EMF, 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-VD0EMF part is unused and in its original packaging.
Return procedure for TC1313-VD0EMF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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