onsemi NCP707BMX185TCG

Overview

NCP707BMX185TCG from onsemi is a 200 mA low-dropout (LDO) voltage regulator with fixed 1.85 V output, optimized for battery-powered portable electronics. It delivers ±2% output accuracy over load/line/temperature, achieves 218 mV typical dropout at 200 mA, and maintains ultra-low 25 µA quiescent current at no-load - enabling extended runtime in space-constrained, noise-sensitive applications such as GPS modules and Bluetooth handsets.

For engineers reviewing the NCP707BMX185TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.85 V fixed output, XDFN4 1.0 × 1.0 mm package, 22 µV_RMS output noise (100 Hz–100 kHz), 70 dB PSRR at 1 kHz, and compatibility with 1 µF ceramic output capacitors without ESR requirements.

Technical Context

The NCP707BMX185TCG employs a PMOS pass transistor architecture enabling reverse-current blocking and low dropout performance across its 1.8 V to 5.5 V input range. Its adaptive ground current circuitry dynamically reduces IQ to 25 µA at zero load while maintaining regulation stability.

Enable logic (EN pin threshold: 0.4 V low, 0.9 V high) controls output activation and integrates internal pull-down (180 nA typ). Thermal shutdown (160 °C typ) and current limiting (379 mA typ) provide robust fault protection without external components.

Key Specifications

Pinout & Package

XDFN4 1.0 × 1.0 mm package with exposed thermal pad (EPAD) - requires direct solder connection to PCB ground plane for thermal management (R_JA = 250 °C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-1802E/TT and TLS850B2TEV50ATMA1, the NCP707BMX185TCG offers optimal balance of ultra-low noise (22 µV_RMS), compact XDFN4 footprint, and 218 mV dropout - making it superior for noise-sensitive portable electronics where space and battery life are critical constraints.

Availability

NCP707BMX185TCG is available at Aetrix Electronics and suitable for GPS receivers, Bluetooth audio devices, portable medical instruments, and industrial wireless sensor nodes requiring stable component supply with guaranteed long-term availability.

Supply support for NCP707BMX185TCG 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

onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCP707 series is designed specifically for ultra-low-power, noise-sensitive portable electronics - emphasizing minimal quiescent current, small footprint, and robust performance under dynamic load conditions.

FAQ

What is the maximum input voltage rating for the NCP707BMX185TCG?

The NCP707BMX185TCG has an absolute maximum input voltage rating of 6 V. Operation above 5.5 V is not recommended per datasheet specifications, and sustained exposure beyond 6 V may cause permanent damage. For reliable operation, maintain VIN between 1.8 V and 5.5 V - the specified operating range that guarantees ±2% output accuracy and 218 mV typical dropout at 200 mA load.

Does the NCP707BMX185TCG include active output discharge functionality?

No, the NCP707BMX185TCG does not include active output discharge. Only versions with "A" or "C" suffixes (e.g., NCP707AMX185TCG) feature this function. The "B" suffix indicates standard enable/disable operation without output discharge - when disabled, the output floats and discharges only through external load or parasitic paths. This is confirmed in the datasheet's PIN FUNCTION DESCRIPTION and APPLICATIONS INFORMATION sections.

Can the NCP707BMX185TCG operate stably with a 100 nF output capacitor?

Yes, the NCP707BMX185TCG remains stable with a minimum effective output capacitance of 100 nF, as stated in the Applications Information section. However, the datasheet specifies 1 µF as the recommended value to ensure adequate safety margin against capacitance loss due to DC bias, temperature, and initial tolerance. Using 100 nF may reduce transient response margin and PSRR at high frequencies - 1 µF ceramic is strongly advised for production designs.

What is the thermal shutdown behavior of the NCP707BMX185TCG?

The NCP707BMX185TCG activates thermal shutdown at a typical junction temperature of 160 °C and resets when temperature falls to approximately 140 °C (20 °C hysteresis). During shutdown, the pass transistor turns off, halting output current. The device automatically recovers once cooled - no external reset is required. This behavior is fully characterized and guaranteed across the −40°C to +125°C operating junction temperature range per the Electrical Characteristics table.

Is the NCP707BMX185TCG compatible with ceramic capacitors having high DC bias derating?

Yes, the NCP707BMX185TCG is compatible with X5R and X7R ceramic capacitors, including those exhibiting significant DC bias derating. The datasheet explicitly recommends ceramic X5R/X7R types and states the minimum effective capacitance requirement (100 nF) already accounts for such variations. Designers should select a 1 µF nominal capacitor rated for ≥2× the output voltage (e.g., 4 V or 6.3 V) to ensure sufficient effective capacitance remains at 1.85 V bias.