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Microchip Technology TC1313-ZA0EMFTR
- Part No.:
- TC1313-ZA0EMFTR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TC1313-ZA0EMFTR.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,634
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Product details
Overview
TC1313-ZA0EMFTR 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 (0.8/1.2/1.5/1.8/2.5/3.3 V) buck output and fixed LDO outputs (1.5/1.8/2.5/3.3 V), with total quiescent current of 57 µA typical, 2.0 MHz PWM switching, and 137 mV dropout at 200 mA for the LDO - enabling compact, high-efficiency dual-rail power for battery-powered portable electronics.
For engineers reviewing the TC1313-ZA0EMFTR datasheet, TC1313-ZA0EMFTR pinout, TC1313-ZA0EMFTR application, or TC1313-ZA0EMFTR equivalent, key selection considerations include independent shutdown control per rail, internal compensation eliminating external loop components, automatic PWM-to-PFM mode transition for ultra-low-light-load efficiency, thermal/UVLO/short-circuit protection, and compatibility with ceramic output capacitors as small as 1 µF on the LDO output.
Technical Context
The TC1313-ZA0EMFTR implements a current-mode synchronous buck regulator with integrated P- 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) mode below ~30 mA load to maintain <38 µA quiescent current. Its LDO uses a PMOS pass device with 137 mV typical dropout at 200 mA and supports 1 µF ceramic output capacitance.
Both regulators feature independent logic-level shutdown inputs (SHDN1/SHDN2), 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 with separate analog and power ground paths, and requires VIN1 and VIN2 to be tied together with minimal trace length to ensure stable operation across its 2.7–5.5 V input 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 RF subsystems requiring core voltage rails |
| LDO Output Current | 300 mA continuous - powers auxiliary peripherals (USB PHY, sensors, memory) with minimal external components |
| Total Quiescent Current | 57 µA typical - enables >1-year battery life in always-on standby applications with dual-rail active monitoring |
| Buck Switching Frequency | 2.0 MHz fixed (1.6–2.4 MHz) - allows use of sub-5 mm inductors and reduces EMI filtering requirements |
| LDO Dropout Voltage | 137 mV @ 200 mA - permits operation with <150 mV headroom, minimizing power loss in low-VIN/VOUT scenarios |
| Operating Junction Temp | –40°C to +125°C - qualified for industrial and automotive cabin-temperature environments |
Pinout & Package
TC1313-ZA0EMFTR 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 stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN2) | LDO shutdown control input | Active-high logic input (>45% VIN); enables/disables LDO independently - supports dynamic power sequencing |
| 2 (VIN2) | LDO input supply | Connects to shared input rail; must be routed short and low-inductance with VIN1 to minimize noise coupling |
| 3 (VOUT2) | LDO regulated output | Delivers fixed 1.5/1.8/2.5/3.3 V; requires ≥1 µF ceramic capacitor to AGND for stability and transient response |
| 4 (NC) | No-connect terminal | Not internally bonded; must remain unconnected and unpopulated on PCB |
| 5 (AGND) | Analog reference ground | Reference node for feedback circuitry; must be isolated from noisy PGND and connected to EP via multiple vias |
| 6 (VFB/VOUT1) | Buck feedback or output sense | For adjustable versions: connects to resistor divider midpoint; for fixed versions: direct output connection - no external compensation needed |
| 7 (SHDN1) | Buck shutdown control input | Active-high logic input (>45% VIN); enables/disables buck stage independently - enables flexible rail enable timing |
| 8 (VIN1) | Buck input supply | Primary input for buck stage; tied directly to VIN2 on PCB - forms common input for both regulators |
| 9 (LX) | Buck switch node | High-slew-rate switching node; requires shortest possible trace to inductor and local high-frequency decoupling |
| 10 (PGND) | Power ground return | Low-impedance return path for buck inductor current and LDO pass device; must be separated from AGND except at single-point tie |
Key Features
| Feature | Design Value |
|---|---|
| Independent shutdown control | Separate SHDN1 and SHDN2 pins allow precise sequencing of buck and LDO rails - critical for SoC boot order compliance |
| Internally compensated buck | Eliminates need for external compensation network - reduces BOM count and layout sensitivity while ensuring stability across all output voltages |
| Automatic PWM-to-PFM transition | Seamless mode switching at ~30–80 mA load threshold maintains regulation while cutting quiescent current by >50% vs. forced-PWM |
| Low-noise LDO with 1 µF support | Stable with 1 µF ceramic output capacitor - reduces board area and cost versus traditional 10–22 µF tantalum solutions |
| Integrated protection suite | UVLO (2.55 V), thermal shutdown (165°C), overcurrent, and short-circuit protection on both outputs - eliminates need for external fault management circuitry |
Applications
| Cellular Handset Power Management | USB-Powered Portable Instrument |
|---|---|
Use Scenario: Dual-rail power for baseband processor (1.2 V core) and RF transceiver (2.8 V bias) in compact GSM/UMTS handsets. IC Role / Device Role / Timing Role: TC1313-ZA0EMFTR provides tightly regulated, sequenced 1.2 V buck and 2.8 V LDO outputs from single 3.7 V Li-ion cell. Use Value: Enables >90% peak efficiency at full load and <57 µA quiescent draw in sleep mode - extending talk time and standby duration. |
Use Scenario: Powering microcontroller (3.3 V), sensor interface (1.8 V), and USB transceiver (3.3 V) in handheld medical diagnostic tools. IC Role / Device Role / Timing Role: TC1313-ZA0EMFTR delivers 3.3 V LDO and 1.8 V buck outputs from 5 V USB input with independent enable control. Use Value: Reduces component count by 40% vs. discrete buck+LDO solution and meets IEC 60601-1 leakage current limits via ultra-low IQ. |
| Portable Computer Subsystem | Handheld PDA / Organizer |
Use Scenario: Supplying memory controller (1.5 V) and display driver (3.3 V) in ultraportable notebook add-in modules. IC Role / Device Role / Timing Role: TC1313-ZA0EMFTR generates 1.5 V buck and 3.3 V LDO rails from 5 V system bus with fast load-step response (<100 µs). Use Value: Achieves <2% load regulation across 0–500 mA and <8 mVPP output ripple - preventing data corruption in high-speed memory interfaces. |
Use Scenario: Powering ARM-based application processor (1.2 V core), NAND flash (3.3 V I/O), and touchscreen controller (2.5 V) in legacy PDAs. IC Role / Device Role / Timing Role: TC1313-ZA0EMFTR supplies 1.2 V buck and 2.5 V LDO from 3.3 V battery rail using 100% duty-cycle capability. Use Value: Maintains regulation down to 2.7 V input - supporting full functionality across entire battery discharge curve without brownouts. |
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 (85 µA), 2.25 MHz switching, QFN-24 package | Supports more complex SoC power trees; requires larger PCB area and additional external components | Choose when needing third rail or higher integration; avoid if space or BOM count is constrained |
| RT8059ZSP | Dual buck only (no integrated LDO), 600 mA/600 mA, 3 MHz, WDFN-10, no PFM mode | Lacks LDO output - requires external linear regulator for noise-sensitive analog rails | Prefer when both rails demand switching efficiency and low-noise LDO is not required |
Compared with TPS65023BRSBR and RT8059ZSP, TC1313-ZA0EMFTR uniquely balances dual-rail integration, ultra-low quiescent current, and minimal external component count - making it optimal for space- and battery-life-critical portable devices where one rail benefits from low-noise LDO regulation and the other from high-efficiency buck conversion.
Availability
TC1313-ZA0EMFTR 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-ZA0EMFTR 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 mixed-signal semiconductor solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.
TC1313-ZA0EMFTR belongs to Microchip's TC13xx family of highly integrated power management ICs, designed specifically for portable and battery-operated applications demanding compact size, low quiescent current, and dual-voltage rail flexibility without compromising reliability or thermal performance.
FAQ
What output voltage options does the TC1313-ZA0EMFTR support?
The TC1313-ZA0EMFTR supports an adjustable buck output from 0.8 V to 4.5 V (via external resistor divider on VFB pin) and fixed buck outputs of 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, or 3.3 V. Its LDO output is fixed at 1.5 V, 1.8 V, 2.5 V, or 3.3 V - determined by factory configuration. The TC1313-ZA0EMFTR variant specifically implements a 1.5 V LDO output paired with an adjustable buck stage.
Does the TC1313-ZA0EMFTR require external compensation components?
No, the TC1313-ZA0EMFTR does not require external compensation components. Both the buck regulator and LDO are internally compensated - eliminating the need for external capacitors or resistors in the feedback loop. This simplifies layout, reduces BOM count, and ensures stability across all supported output voltages and load conditions without tuning.
How does the TC1313-ZA0EMFTR manage efficiency at light loads?
The TC1313-ZA0EMFTR automatically transitions from fixed-frequency PWM mode (2.0 MHz) to pulse-frequency modulation (PFM) mode when load current drops below ~30 mA. In PFM mode, it skips switching cycles to reduce gate drive losses, achieving a typical total quiescent current of 57 µA - significantly improving light-load efficiency compared to forced-PWM alternatives.
What thermal management provisions does the TC1313-ZA0EMFTR include?
The TC1313-ZA0EMFTR incorporates thermal shutdown at 165°C with 10°C hysteresis, and its 3×3 mm DFN package features an exposed thermal pad (EP) that must be soldered to AGND. With proper PCB layout (4-layer board, internal ground plane, ≥2 thermal vias), the device achieves θJA = 41°C/W - enabling reliable operation up to +125°C junction temperature under typical 500 mA buck + 300 mA LDO loads.
Can the TC1313-ZA0EMFTR operate with input voltage below its output voltage?
No - the TC1313-ZA0EMFTR cannot operate with input voltage below its output voltage. Its buck regulator requires minimum input voltage ≥ VOUT1 + dropout (≥280 mV at 500 mA), and its LDO requires ≥ VOUT2 + dropout (≥137 mV at 200 mA). The absolute minimum input is 2.7 V, and the device includes undervoltage lockout (UVLO) that disables both regulators if VIN falls below 2.4 V.
TC1313-ZA0EMFTR 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:
- 3.3V, 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-ZA0EMFTR FAQ
1.How can I place an order for TC1313-ZA0EMFTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1313-ZA0EMFTR 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-ZA0EMFTR reliable?
The price and inventory of TC1313-ZA0EMFTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1313-ZA0EMFTR is usually 5 days.
3.What payment methods are accepted for TC1313-ZA0EMFTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1313-ZA0EMFTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1313-ZA0EMFTR?
TC1313-ZA0EMFTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1313-ZA0EMFTR 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-ZA0EMFTR?
For technical support, including TC1313-ZA0EMFTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1313-ZA0EMFTR requirements.
6.How does Aetrix verify that TC1313-ZA0EMFTR is sourced from the original manufacturer or authorized distributors?
All TC1313-ZA0EMFTR 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-ZA0EMFTR meets industry standards.
7.What is the process for return or replacement of TC1313-ZA0EMFTR?
All TC1313-ZA0EMFTR units undergo pre-shipment inspection (PSI). If there is an issue with TC1313-ZA0EMFTR, 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-ZA0EMFTR part is unused and in its original packaging.
Return procedure for TC1313-ZA0EMFTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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