ADP1741 2 A, Low VIN, Dropout, CMOS Linear Regulator
The ADP1740/ADP1741 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
| Design ToolsReference Designs |
Data Sheets
Application Notes
Frequently Asked Questions
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADP1741ACPZ-R7 Production | 16 ld LFCSP (4x4mm, 2.1mm exposed pad) | REEL 1500 | -40 to 125C | 0 | 1.2 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| AD-FMCADC3-EBZ | Evaluation Board | 1295 | Y |
| AD-FMCADC4-EBZ | 4-Channel, 14-bit, 1GSPS Data Receiver Board | 1699 | Y |
| AD-FMCADC7-EBZ | Evaluation Board | -1 | Y |
| ADP1741-EVALZ | Evaluation Board | 60 | Y |
Reference Materials
