Overview
The NCV5661DT33RKG is a high-performance, low dropout (LDO) linear voltage regulator produced by onsemi. This device is designed for high power applications that require up to 1.0 A current. It is available in both fixed and adjustable output versions, with the NCV5661DT33RKG specifically offering a fixed output voltage of 3.3 V. The regulator features ultra-fast response times for load transients and low noise operation without the need for a bypass capacitor. Additional features include an Enable function and an Error Flag for the fixed output version, enhancing the device's utility in various applications.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (Vin) | 2.0 | 9.0 | V | |
| Output Voltage (Vout) | 3.3 | V | ||
| Output Noise Voltage (Vn) | 26 | µVrms | ||
| Output Voltage Accuracy (TJ = 25°C) | -1% | +1% | ||
| Line Regulation (Iout = 10 mA, Vout+1.5 V < Vin < 7.0 V) | 0.03 | % | ||
| Load Regulation (10 mA < Iout < 1.0 A) | 0.03 | % | ||
| Dropout Voltage (Iout = 1.0 A) | 1.0 | 1.3 | V | |
| Peak Output Current Limit (Iout) | 1.0 | A | ||
| Internal Current Limitation (Ilim) | 1.5 | A | ||
| Ripple Rejection (120 Hz) | 70 | 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/Adjustable Output Versions: The NCV5661DT33RKG offers a fixed output of 3.3 V, while other versions are adjustable.
- Enable Function: Allows for on/off control of the regulator.
- Error Flag (Fixed Output Version): Produces a logic Low when the output voltage drops below the nominal value.
- Current Limit Protection: Internally clamped to 1.5 A to prevent excessive power dissipation.
- Thermal Protection: Thermal shutdown at 160°C to prevent overheating.
- 0.9 V Reference Voltage: For ultra-low output operation.
- Power Supply Rejection Ratio (PSRR): Greater than 65 dB.
Applications
- Servers: Ideal for high power server applications.
- ASIC Power Supplies: Suitable for powering Application-Specific Integrated Circuits.
- Networking Equipment: Used in various networking devices.
- Automotive: AEC-Q100 qualified and PPAP capable, making it suitable for automotive applications.
- Post Regulation for Power Supplies: Can be used as a post-regulator in power supply systems.
- Constant Current Source: Can be configured to act as a constant current source.
- Gaming and STB Modules: Used in gaming consoles and set-top boxes.
Q & A
- What is the maximum output current of the NCV5661DT33RKG?
The maximum output current is 1.0 A.
- What are the available output voltage options for the NCV5661 series?
The NCV5661 series offers fixed output voltages from 0.9 V to 3.3 V and an adjustable output version.
- What is the typical output noise voltage of the NCV5661DT33RKG?
The typical output noise voltage is 26 µVrms.
- Does the NCV5661DT33RKG have an Enable function?
Yes, it has an Enable function for on/off control of the regulator.
- What is the purpose of the Error Flag in the fixed output version?
The Error Flag produces a logic Low when the output voltage drops below the nominal value.
- What is the thermal shutdown temperature of the NCV5661DT33RKG?
The thermal shutdown temperature is 160°C.
- What is the recommended input capacitor for the NCV5661DT33RKG?
A 150 µF OSCON capacitor with an ESR of 50 mΩ is recommended.
- Is the NCV5661DT33RKG suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable.
- What is the power supply rejection ratio (PSRR) of the NCV5661DT33RKG?
The PSRR is greater than 65 dB.
- What are the package options for the NCV5661DT33RKG?
It is available in a 5-pin DPAK or DFN 3x3.3 mm package.
