onsemi NCP4569DM33R2

Overview

NCP4569DM33R2 from onsemi is a fixed 3.3 V, 300 mA CMOS low-dropout regulator with shutdown control and reference bypass input. It delivers ±0.5% output voltage accuracy, 240 mV typical dropout at full load, and ultra-low 50 µA quiescent current-enabling long battery life in portable instrumentation and medical devices.

For engineers reviewing the NCP4569DM33R2 datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 300 mA output under 1.0 µF ceramic output capacitance, 0.05 µA shutdown current, 260 nV/√Hz output noise with optional 470 pF bypass capacitor, and thermal/overcurrent protection in Micro-8 package.

Technical Context

The NCP4569DM33R2 uses a CMOS pass transistor architecture to achieve near-constant supply current across load (50 µA typ. at 0.1 µA–300 mA), unlike bipolar LDOs whose quiescent current rises with load. Its internal bandgap reference is accessible via Pin 5 (Bypass) for external noise filtering.

Shutdown is implemented as a logic-controlled enable input (Pin 7, SHDN) with VIH ≥ 45% VIN and VIL ≤ 15% VIN thresholds; during shutdown, VOUT collapses to 0 V and ISS drops to 0.05 µA. Stability is ensured with ≥1.0 µF output capacitance (ESR ≤ 5 Ω).

Key Specifications

Pinout & Package

Package: Micro-8 (Case 846A), 3.0 mm × 3.0 mm body, 0.65 mm lead pitch, surface-mount. Thermal resistance θ_JA ≈ 200°C/W on single-layer FR4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-3302E/TT and TLS850F3TLE, the NCP4569DM33R2 uniquely balances ultra-low noise (via Bypass pin), 300 mA capability, and 0.05 µA shutdown in Micro-8 - making it optimal for space-constrained, battery-powered precision analog systems where noise and standby current are co-critical.

Availability

NCP4569DM33R2 is available at Aetrix Electronics and suitable for portable medical instruments, digital camera modules, and cellular handset baseband power requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for NCP4569DM33R2 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, with leadership in power management, analog, and sensing technologies.

The NCP4569DM33R2 belongs to onsemi's precision CMOS LDO family, designed specifically for battery-operated and noise-sensitive applications demanding high accuracy, ultra-low quiescent current, and robust protection in miniature packages.

FAQ

What is the minimum output capacitance required for stability of the NCP4569DM33R2?

The NCP4569DM33R2 is stable with a minimum 1.0 µF ceramic output capacitor having ESR ≤ 5 Ω and resonant frequency > 1 MHz. This requirement is verified per the datasheet's Electrical Characteristics table and Typical Characteristics plots. Using less capacitance risks oscillation or poor transient response. The NCP4569DM33R2 does not require additional ESR or tantalum capacitors for stability.

Does the NCP4569DM33R2 support adjustable output voltage?

No, the NCP4569DM33R2 is a fixed-output device configured for 3.3 V. It lacks feedback pins or external resistor networks for voltage adjustment. The "DM33R2" suffix explicitly denotes the 3.3 V variant within the NCP4569 family. For adjustable versions, onsemi offers other regulators such as the NCP1117 series-but those are not pin-compatible or functionally equivalent to the NCP4569DM33R2.

How does the Bypass pin (Pin 5) affect noise performance in the NCP4569DM33R2?

The Bypass pin (Pin 5) connects to the internal bandgap reference node. Adding a 470 pF capacitor from this pin to GND filters reference noise, reducing total output noise to 260 nV/√Hz (typ.). Without the capacitor, output noise increases significantly. Larger values extend startup settling time but do not improve noise beyond ~470 pF. The NCP4569DM33R2's Bypass functionality is confirmed in Figure 1, Figure 2, and the Bypass Input section of the datasheet.

What are the absolute maximum ratings for input voltage on the NCP4569DM33R2?

The NCP4569DM33R2 has an absolute maximum input voltage rating of 6.5 V, as specified in the Absolute Maximum Ratings table. Operation above this level risks permanent damage. The recommended operating input voltage range is up to 6.0 V (per Electrical Characteristics). Exceeding 6.5 V-even briefly-may trigger latch-up or junction breakdown, and the NCP4569DM33R2 contains no internal overvoltage clamp beyond its rated limits.

Is the NCP4569DM33R2 RoHS compliant and halogen-free?

Yes, the NCP4569DM33R2 is RoHS compliant and halogen-free, consistent with onsemi's standard environmental policy for Micro-8 packaged devices manufactured after 2006. This compliance is documented in onsemi's official packaging and environmental reports (e.g., "Green Packaging" documentation), and the DM suffix indicates lead-free (Pb-free) termination. No exemptions apply-the NCP4569DM33R2 meets EU RoHS Directive 2011/65/EU and JEDEC JS709 requirements.