Microchip Technology TC1017-2.9VLTTR

Overview

TC1017-2.9VLTTR from Microchip Technology is a fixed-output, CMOS low-dropout (LDO) linear voltage regulator in SC-70 package, delivering 2.9 V ±0.5% at up to 150 mA output current with 285 mV typical dropout at full load. It features 53 µA typical quiescent current, 10 µs wake-up time from shutdown, and integrated overcurrent/overtemperature protection. Designed for battery-powered portable electronics including medical instruments and cellular handsets.

For engineers reviewing the TC1017-2.9VLTTR datasheet, TC1017-2.9VLTTR pinout, TC1017-2.9VLTTR application, or TC1017-2.9VLTTR equivalent, key selection criteria include its 2.9 V precision output, ultra-low shutdown current (0.05 µA), compatibility with 1 µF ceramic output capacitance, and SC-70 footprint for space-constrained designs.

Technical Context

The TC1017-2.9VLTTR uses a P-channel MOSFET pass element enabling low dropout and eliminating body diode reverse-current issues common in N-channel LDOs. Its internal error amplifier compares a divided-down VOUT against a precision bandgap reference to maintain regulation across input voltages from 2.7 V to 6.0 V and load currents from 0 to 150 mA.

Shutdown control is implemented via a dedicated SHDN pin with VIH = 45% VIN and VIL = 15% VIN thresholds, enabling fast 10 µs wake-up and reducing supply current to 0.05 µA (typ). Thermal shutdown activates at 160°C (typ) with 10°C hysteresis, and current limiting caps fault current at 120 mA (typ) when VOUT < 0.5 V.

Key Specifications

Pinout & Package

TC1017-2.9VLTTR is supplied in a 5-pin SC-70 package (JEDEC MO-203AA), offering 50% smaller footprint than SOT-23. Thermal resistance θJA is 450°C/W under JEDEC J51-7 conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-2902E/TO, TC1017-2.9VLTTR provides programmable shutdown and faster wake-up (10 µs vs. ~100 µs), while NCP1117DT29RKG trades off efficiency and size for higher current capacity - making TC1017-2.9VLTTR optimal for compact, battery-sensitive designs needing precise 2.9 V regulation with dynamic power control.

Availability

TC1017-2.9VLTTR is available at Aetrix Electronics and suitable for medical wearables, portable diagnostic devices, low-power IoT sensors, and GSM/GPRS modem modules requiring stable component supply with long-term lifecycle support.

Supply support for TC1017-2.9VLTTR 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 microcontrollers, analog devices, and memory products, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The TC1017 product line delivers ultra-low-power, precision CMOS LDO regulators optimized for space- and energy-constrained portable electronics - specifically targeting battery-operated medical, communications, and consumer devices.

FAQ

What is the output voltage tolerance of TC1017-2.9VLTTR over temperature and load?

The TC1017-2.9VLTTR maintains an output voltage of 2.9 V with ±0.5% typical accuracy at +25°C, and ±2.5% maximum variation over the full –40°C to +125°C operating temperature range and 0.1 mA to 150 mA load current. This specification includes combined effects of line regulation (0.04%/V), load regulation (0.38%), and temperature coefficient (40 ppm/°C).

Can TC1017-2.9VLTTR operate with input voltage below 2.9 V?

Yes - TC1017-2.9VLTTR can regulate down to VIN = 2.7 V minimum, provided the dropout condition is met: VIN ≥ (2.9 V × 1.025) + V_DROPOUT. At 150 mA, V_DROPOUT is 285 mV (typ), so minimum functional VIN is approximately 3.185 V. Below that, output drops out of regulation - it does not function as a buck converter or charge pump.

Is TC1017-2.9VLTTR compatible with ceramic output capacitors smaller than 1 µF?

No - the TC1017-2.9VLTTR requires a minimum 1 µF ceramic output capacitor (X5R or X7R dielectric) for guaranteed stability across all operating conditions. Using smaller values risks oscillation or poor transient response, as confirmed in Section 4.2 of the DS21813F datasheet and validated in Figure 2-13 load regulation plots.

How does the SHDN pin behave during power-up?

The TC1017-2.9VLTTR remains disabled until SHDN rises above VIH = 45% VIN. During slow-rising VIN (e.g., battery insertion), the regulator stays off until SHDN crosses threshold - preventing brown-out glitches. Once enabled, output settles within 32 µs (typ). Tying SHDN directly to VIN ensures immediate enablement after power application.

What thermal protection behavior occurs if TC1017-2.9VLTTR exceeds junction temperature?

If the TC1017-2.9VLTTR junction temperature reaches ~160°C (typ), thermal shutdown disables the P-channel MOSFET pass element, dropping VOUT to zero and halting power dissipation. The device remains off until temperature falls to ~150°C (10°C hysteresis), then resumes regulation - protecting against permanent damage during sustained overload or poor heatsinking.