Overview
The NCP5661DT33RKG is a high-performance, low dropout linear regulator from onsemi, designed for high power applications requiring up to 1.0 A current. This device is part of the NCP5661/NCV5661 series, which offers both fixed and adjustable output voltage versions. The NCP5661DT33RKG specifically provides a fixed output voltage of 3.3 V. It features ultra-fast transient response times, low noise operation, and a range of safety features such as Enable, Error Flag, current limit protection, and thermal protection.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (Vin) | 2.0 | 9.0 | V | |
| Output Voltage (Vout) | 3.3 - 1% | 3.3 | 3.3 + 1% | V |
| Output Noise Voltage (Vn) | 26 | μVrms | ||
| Line Regulation (REGline) | 0.03 | % | ||
| Load Regulation (REGload) | 0.2 | % | ||
| Dropout Voltage (VDO) | 1.0 | 1.3 | V | |
| Peak Output Current Limit (Iout) | 1.0 | A | ||
| Internal Current Limitation (Ilim) | 1.5 | A | ||
| Ripple Rejection (RR) at 120 Hz | 70 | dB | ||
| Ripple Rejection (RR) at 1.0 kHz | 65 | dB | ||
| Thermal Shutdown (TSHD) | 160 | °C | ||
| Ground Current (Iq) at Iout = 1.0 A | 1.3 | 3.0 | mA | |
| Enable Input Threshold Voltage (Ven) | 0.3 | 1.3 | V |
Key Features
- Ultra-Fast Transient Response: Settling time of 1-3 μs for load transients.
- Low Noise Operation: 26 μVrms output noise without a bypass capacitor.
- Low Ground Current: Independent of load, with a maximum of 3.0 mA.
- Fixed and Adjustable Output Versions: Output voltages as low as 0.9 V.
- Enable Function: Allows for on/off control of the regulator.
- Error Flag (Fixed Output Version): Produces a logic Low when output voltage drops below nominal.
- Current Limit Protection and Thermal Protection: Ensures device safety during fault conditions.
- Thermally Robust Package: Available in 5-pin DPAK and DFN 3x3.3 mm packages.
- AEC-Q100 Qualified and PPAP Capable (NCV Prefix): Suitable for automotive and other demanding applications.
Applications
- Servers: Ideal for high power server applications.
- ASIC Power Supplies: Suitable for powering high-current ASICs.
- Post Regulation for Power Supplies: Used in post-regulation stages of power supplies.
- Constant Current Source: Can be used as a constant current source.
- Networking Equipment: Applicable in networking devices requiring stable power supply.
- Gaming and STB Modules: Suitable for gaming consoles and set-top boxes.
Q & A
- What is the maximum output current of the NCP5661DT33RKG?
The maximum output current is 1.0 A.
- What are the available output voltage options for the NCP5661 series?
The NCP5661 series offers fixed output voltages from 0.9 V to 3.3 V and an adjustable output version.
- What is the typical dropout voltage of the NCP5661DT33RKG?
The typical dropout voltage is 1.3 V.
- Does the NCP5661DT33RKG have thermal protection?
- What is the purpose of the Error Flag feature in the fixed output version?
The Error Flag produces a logic Low when the output voltage drops below the nominal output voltage.
- What is the recommended input capacitor for the NCP5661DT33RKG?
A 150 μF OSCON capacitor with an ESR of 50 mΩ is recommended.
- Is the NCP5661DT33RKG suitable for automotive applications?
- What are the package options available for the NCP5661DT33RKG?
- How does the Enable function work on the NCP5661DT33RKG?
- What is the ripple rejection performance of the NCP5661DT33RKG?
