Microchip Technology TC1017-2.8VLTTR

Overview

TC1017-2.8VLTTR from Microchip Technology is a fixed-output, CMOS low-dropout (LDO) linear voltage regulator in SC-70 package, delivering 2.8 V ±0.5% at up to 150 mA output current with 285 mV typical dropout at full load and 53 µA typical quiescent current. It integrates shutdown control, overcurrent and overtemperature protection, and operates from 2.7 V to 6.0 V input for battery-powered portable electronics.

For engineers reviewing the TC1017-2.8VLTTR datasheet, TC1017-2.8VLTTR pinout, TC1017-2.8VLTTR application, or TC1017-2.8VLTTR equivalent, key selection criteria include ultra-low shutdown current (0.05 µA), fast 10 µs wake-up time, 1 µF ceramic output capacitor support, ±0.5% output accuracy, and SC-70 footprint compatibility with bipolar LDO upgrades.

Technical Context

The TC1017-2.8VLTTR uses a P-channel MOSFET pass element enabling low dropout and high PSRR (58 dB at 1 kHz). Its internal error amplifier compares a divided VOUT against a precision bandgap reference, delivering stable regulation across –40°C to +125°C ambient and 0–150 mA load range.

Shutdown is controlled via a logic-level SHDN pin (VIH = 45% VIN, VIL = 15% VIN), reducing supply current to 0.05 µA typical while pulling VOUT to ground. Thermal shutdown activates at 160°C (typical) with 10°C hysteresis, and current limiting caps fault current at 120 mA (typical) when VOUT < 0.5 V.

Key Specifications

Pinout & Package

TC1017-2.8VLTTR is supplied in a 5-pin SC-70 package (JEDEC MO-203AA), offering a 50% smaller footprint than SOT-23. The SC-70 variant used here follows the standard pinout: Pin 1 = SHDN, Pin 2 = NC, Pin 3 = GND, Pin 4 = VOUT, Pin 5 = VIN.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with MCP1700-2802E/TO and TPS78028DRVR, TC1017-2.8VLTTR uniquely balances SC-70 footprint, integrated shutdown, 0.05 µA shutdown current, and 1 µF ceramic stability-making it optimal for space-constrained, battery-cycled portable designs requiring both low I_Q and enable control.

Availability

TC1017-2.8VLTTR is available at Aetrix Electronics and suitable for cellular handsets, portable medical instruments, and industrial handheld terminals requiring stable component supply with long-term manufacturability and consistent parametric performance.

Supply support for TC1017-2.8VLTTR 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 Inc. is a leading provider of microcontroller, analog, and FPGA solutions, with broad expertise in power management ICs for embedded and battery-powered systems.

The TC1017 product line delivers precision, low-quiescent CMOS LDOs optimized for portable electronics - designed to replace legacy bipolar regulators while improving efficiency, accuracy, and thermal robustness.

FAQ

What is the output voltage tolerance of TC1017-2.8VLTTR over temperature and load?

The TC1017-2.8VLTTR guarantees ±0.5% typical output voltage accuracy across –40°C to +125°C junction temperature and 0–150 mA load range. This corresponds to ±14 mV at 2.8 V and is maintained by an internal precision bandgap reference and low-drift error amplifier. Load regulation contributes ≤1.5% deviation, and line regulation adds ≤0.2%/V - all within the ±2.5% total limit specified over full operating conditions.

Can TC1017-2.8VLTTR operate with a 1 µF ceramic output capacitor?

Yes, TC1017-2.8VLTTR is explicitly designed and characterized for stability with a minimum 1 µF ceramic output capacitor (X5R or X7R dielectric). Its internal compensation eliminates the need for ESR-based stabilization, allowing use of low-ESR ceramics (e.g., 50 mΩ typical) without risk of oscillation. This reduces bill-of-materials cost and PCB area versus tantalum or electrolytic alternatives.

What is the maximum input voltage rating for TC1017-2.8VLTTR?

The absolute maximum input voltage for TC1017-2.8VLTTR is 6.0 V, as defined in its Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable continuous operation, VIN must also satisfy VIN ≥ (2.8 V × 1.025) + V_DROPOUT, which - at 150 mA load - requires VIN ≥ ~3.085 V. Practical design limits are governed by thermal dissipation, especially in the SC-70 package (θ_JA = 450°C/W).

How does the shutdown function behave on TC1017-2.8VLTTR?

When the SHDN pin is pulled below 15% of VIN (V_IL), TC1017-2.8VLTTR disables its pass transistor, dropping VOUT to near 0 V and reducing supply current to 0.05 µA (typical). Release occurs when SHDN rises above 45% of VIN (V_IH). The device achieves 98% of final output voltage within 32 µs (settling time), with 2% recovery reached in just 10 µs (wake-up time), enabling responsive power cycling.

Is TC1017-2.8VLTTR pin-compatible with standard bipolar LDOs?

Yes, TC1017-2.8VLTTR is explicitly designed as a pin-compatible upgrade for bipolar LDOs in SC-70 and SOT-23 footprints. Its pinout matches industry-standard 5-pin configurations (e.g., SHDN, GND, VOUT, VIN), and the NC pin allows backward compatibility with layouts originally intended for 3-pin devices. No PCB redesign is needed when replacing legacy regulators such as LM2936 or LP2951 variants in space-constrained applications.