ADP1741
2 A，低压差， CMOS线性稳压器 2 A, Low Dropout, CMOS Linear Regulator
Product Details
The ADP1740/ are CMOS, low dropout linear regulators that operate from 1.6 V to 3.6 V and provide up to 2 A of output current. These Low VIN / VOUT LDOs are ideal for regulation of nanometer FPGA geometries operating from 2.5V down to 1.8V I/O rails, and powering core voltages down to 0.75V. Using an advanced proprietary architecture, they provide high power supply rejection, low noise, and achieve excellent line and load transient response with just a small 4.7 µF ceramic output capacitor.
The ADP1740 is available in seven fixed output voltage options. The ADP1741 is an adjustable version that allows output voltages ranging from 0.75 V to 3.3 V via an external divider.The ADP1740/ADP1741 allow an external soft start capacitor to be connected to program the startup. A digital power-good output allows power system monitors to check the health of the output voltage.
The ADP1740/ADP1741 are available in a 16-lead, 4 mm × 4 mm LFCSP, making them not only very compact solutions, but also providing excellent thermal performance for applications that require up to 2 A of output current in a small, low profile footprint.
**Applications**
- .
- Server computers
- .
- Memory components
- .
- Telecommunications equipment
- .
- Network equipment
- .
- DSP/FPGA/microprocessor supplies
- .
- Instrumentation equipment/data acquisition systems
### Features and Benefits
- .
- Maximum output current: 2 A
- .
- Input voltage range: 1.6 V to 3.6 V
- .
- Low shutdown current: 2 μA
- .
- Low dropout voltage: 160 mV @ 2 A load
- .
- Initial accuracy: ±1%
- .
- Accuracy over line, load, and temperature: ±2%
- .
- 7 fixed output voltage options with soft start ADP1740: 0.75 V to 2.5 V
- .
- Adjustable output voltage options with soft start ADP1741: 0.75 V to 3.3 V
- .
- High PSRR
65 dB @ 1 kHz
65 dB @ 10 kHz
54 dB @ 100 kHz
- .
- 23 μV rms at 0.75 V output
- .
- Stable with small 4.7 μF ceramic output capacitor
- .
- Excellent load and line transient response
- .
- Current-limit and thermal overload protection
- .
- See data sheet for additional features
