Microchip Technology TC1313-1P0EMF

Overview

TC1313-1P0EMF 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 1.0 V (buck) and 3.3 V (LDO) fixed outputs, operates from 2.7–5.5 V input, achieves >90% efficiency at heavy load, and supports -40°C to +125°C junction temperature - ideal for space-constrained portable medical instruments and USB-powered devices.

For engineers reviewing the TC1313-1P0EMF datasheet, TC1313-1P0EMF pinout, TC1313-1P0EMF application, or TC1313-1P0EMF equivalent, key selection criteria include independent shutdown control per rail, 57 µA total quiescent current, 2.0 MHz fixed-frequency PWM operation with automatic PFM transition, 137 mV LDO dropout at 200 mA, and internal compensation eliminating external loop components.

Technical Context

The TC1313-1P0EMF implements a current-mode synchronous buck regulator with integrated high-side and low-side MOSFETs (R_DS(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 to maintain ultra-low quiescent current (38 µA typical). Its LDO stage uses a PMOS pass device with 137 mV typical dropout at 200 mA and supports 1.5 V, 1.8 V, 2.5 V, and 3.3 V fixed outputs.

Both regulators feature independent logic-level shutdown inputs (SHDN1/SHDN2), undervoltage lockout (UVLO = 2.55 V nominal, 200 mV hysteresis), overtemperature protection (165°C trip, 10°C hysteresis), and short-circuit protection. The buck output is internally compensated and adjustable via feedback (0.8–4.5 V) or fixed; the LDO requires only a single 1 µF ceramic output capacitor and exhibits 62 dB PSRR at 100 Hz.

Key Specifications

Pinout & Package

TC1313-1P0EMF is housed in a 3×3 mm, 10-pin DFN package with exposed thermal pad (EP), optimized for high-power-density PCB layouts and thermal performance (θ_JA = 41°C/W on 4-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65023BRSBR and RT8059ZSP, the TC1313-1P0EMF uniquely balances ultra-low quiescent current, integrated LDO noise rejection, and minimal external component count - making it optimal for cost-sensitive, space-constrained portable systems where one rail powers noise-sensitive analog circuitry.

Availability

TC1313-1P0EMF 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 TC1313-1P0EMF 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on reliability, longevity, and broad industrial qualification.

The TC1313 product line was designed specifically for dual-rail portable electronics requiring high integration, low quiescent current, and robust thermal performance - targeting cellular phones, PDAs, and handheld medical instruments.

FAQ

What output voltages does the TC1313-1P0EMF provide?

The TC1313-1P0EMF provides two fixed output voltages: 1.0 V from its synchronous buck regulator (VOUT1) and 3.3 V from its low-dropout linear regulator (VOUT2). These values are factory-trimmed and do not require external resistive feedback networks - simplifying design and improving accuracy over temperature and load.

Can the TC1313-1P0EMF operate from a single-cell Li-ion battery?

Yes, the TC1313-1P0EMF supports an input voltage range of 2.7 V to 5.5 V, fully covering the discharge profile of a standard single-cell Li-ion battery (2.7–4.2 V). Its 137 mV LDO dropout and 100% duty-cycle buck capability ensure stable 1.0 V and 3.3 V outputs even at end-of-discharge voltage.

How does the TC1313-1P0EMF manage power efficiency across load conditions?

The TC1313-1P0EMF automatically transitions between fixed-frequency PWM (2.0 MHz) at loads >80 mA and power-saving PFM mode below ~30 mA. This maintains >90% efficiency at full load while reducing total quiescent current to 57 µA - optimizing battery runtime across active and standby states in the TC1313-1P0EMF.

What is the role of the exposed thermal pad (EP) on the TC1313-1P0EMF DFN package?

The exposed thermal pad (EP) on the TC1313-1P0EMF serves as the primary thermal conduction path to the PCB. It must be soldered to AGND using multiple vias to an internal ground plane. Proper EP connection reduces θ_JA to 41°C/W, enabling reliable 500 mA buck operation at +85°C ambient - a critical requirement for sustained performance in the TC1313-1P0EMF.

Does the TC1313-1P0EMF require external compensation components?

No, the TC1313-1P0EMF features internally compensated control loops for both the buck and LDO regulators. This eliminates external compensation capacitors and resistors, reducing BOM count, PCB area, and design validation effort - a key advantage confirmed in the TC1313-1P0EMF datasheet and application circuits.