Microchip Technology TC1313-1P0EMFTR

Overview

TC1313-1P0EMFTR 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 fixed 1.0 V on VOUT1 (buck) and 3.3 V on VOUT2 (LDO), operates from 2.7–5.5 V input, achieves >90% typical efficiency at heavy load, and supports automatic PWM-to-PFM mode transition for ultra-low quiescent current (57 µA typical).

For engineers reviewing the TC1313-1P0EMFTR datasheet, TC1313-1P0EMFTR pinout, TC1313-1P0EMFTR application, or TC1313-1P0EMFTR equivalent, this device serves as a compact, thermally optimized solution for battery-powered systems requiring tightly regulated dual-rail supplies with independent enable control, UVLO, overtemperature, and short-circuit protection.

Technical Context

The TC1313-1P0EMFTR implements a current-mode synchronous buck regulator switching at a fixed 2.0 MHz under heavy load (≥80 mA), transitioning automatically to PFM mode below ~30 mA to maintain regulation while minimizing IQ. Its integrated P/N-channel MOSFETs deliver ≤280 mV dropout at 500 mA (VOUT1 = 3.3 V) and support 100% duty cycle operation for low-input applications.

The LDO section provides a fixed 3.3 V output with 137 mV typical dropout at 200 mA, stable with only a 1 µF ceramic capacitor, and features independent SHDN2 control, ±0.3% output voltage tolerance, and 62 dB PSRR at 100 Hz. Both regulators share thermal shutdown (165°C) and undervoltage lockout (2.55 V nominal, 200 mV hysteresis).

Key Specifications

Pinout & Package

TC1313-1P0EMFTR is housed in a 3×3 mm, 10-pin DFN package with exposed thermal pad (EP), rated θJA = 41°C/W on a 4-layer board with internal ground plane and 2 vias to AGND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output regulator applications.

Compared with TPS65023RSBR and RT8059ZSP, TC1313-1P0EMFTR uniquely balances ultra-low IQ, integrated LDO noise performance, and minimal external component count in a 3×3 mm DFN - making it optimal for size- and battery-life-constrained dual-rail systems where one rail demands low noise and the other high efficiency.

Availability

TC1313-1P0EMFTR is available at Aetrix Electronics and suitable for cellular phones, portable medical instruments, and USB-powered devices requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for TC1313-1P0EMFTR 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 global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on reliability, longevity, and embedded system integration.

The TC1313 product line was designed for portable and battery-operated applications needing compact, efficient dual-rail power solutions - emphasizing low quiescent current, thermal robustness, and minimal external component count.

FAQ

What output voltages does the TC1313-1P0EMFTR provide?

The TC1313-1P0EMFTR provides a fixed 1.0 V output from its synchronous buck regulator (VOUT1) and a fixed 3.3 V output from its low-dropout linear regulator (VOUT2). These values are factory-trimmed and do not require external feedback resistors, simplifying design for applications like microcontroller core and I/O rail generation.

Does TC1313-1P0EMFTR support independent enable control for each output?

Yes, TC1313-1P0EMFTR features two independent logic-level shutdown inputs: SHDN1 controls the 1.0 V buck output, and SHDN2 controls the 3.3 V LDO output. Both require >45% VIN to enable and <15% VIN to disable, enabling flexible power sequencing without external gate drivers or logic.

What is the minimum input voltage required for TC1313-1P0EMFTR to regulate both outputs?

The TC1313-1P0EMFTR requires VIN ≥ 2.7 V per absolute maximum ratings, but practical regulation depends on dropout margins: for 1.0 V buck output, VIN must exceed 1.0 V + 280 mV (typical dropout); for 3.3 V LDO, VIN must exceed 3.3 V + 137 mV (typical). Thus, full dual-rail operation starts reliably at VIN ≥ 3.44 V.

Can TC1313-1P0EMFTR operate from a single-cell Li-ion battery?

Yes, TC1313-1P0EMFTR supports input voltages from 2.7 V to 5.5 V, matching the discharge curve of a single-cell Li-ion (2.7–4.2 V). Its 100% duty-cycle capability ensures regulation down to 2.7 V for the 1.0 V buck output, and the LDO maintains 3.3 V until VIN drops below ~3.44 V - covering most of the battery's usable range.

What thermal considerations apply to TC1313-1P0EMFTR in the DFN package?

TC1313-1P0EMFTR in the 10-pin DFN package has a typical θJA of 41°C/W on a 4-layer board with internal ground plane and 2 thermal vias to AGND. To avoid thermal shutdown at 165°C, keep power dissipation below ~1.2 W at 85°C ambient - achievable by limiting combined output current and ensuring proper EP-to-AGND connection per Microchip layout guidelines.