描述
The LTP7792 is a CMOS low dropout regulator that operates from 2.3 V to 6.5 V and provides up to 2
A of output current. This high output current LDO is ideal for regulation of high performance analog
and mixed-signal circuits operating from 6 V down to 1.2 V rails. Using an advanced proprietary
architecture, the device provides high power supply rejection and low noise, and achieves excellent
line and load transient response with just a small 4.7 uF ceramic output capacitor. Load transient
response is typically 1.5 us for a 1 mA to 1.5 A load step.
The LTP7792 is available in 17 fixed output voltage options. The following voltages are available
from stock: 1.3 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 4.2 V, and 5.0 V. Additional voltages that are available by
special order are: 1.5 V, 1.85 V, 2.0 V, 2.2 V, 2.7 V, 2.75 V, 2.8 V, 2.85 V, 3.8 V, and 4.6 V. An adjustable
version is also available that allows output voltages that range from 1.2 V to VIN − VDO with an
external feedback divider.
优势和特点
- Operating Input Voltage Range: 2.3 V to 6.5 V
- Maximum Output Current: 2 A
- Low noise: 5 µV rms independent of output voltage at 100 Hz to 100 kHz
- Fast transient response: 1.5 μs for 1 mA to 1.5 A load step
- High Power Supply Ripple Rejection: 60 dB PSRR at 100 kHz
- Low dropout voltage: 135 mV at 2 A load, VOUT = 3 V
- Initial accuracy: −0.8% (minimum), +0.7% (maximum)
- Accuracy over line, load, and temperature: ±1.5%
- Quiescent current, IGND = 0.7 mA with no load
- Low shutdown current: 0.25 μA at VIN = 5 V
- Stable with small 4.7 µF ceramic output capacitor
- Adjustable and fixed output voltage options: 1.2 V to 5.0 V
- Adjustable output from 1.2 V to VIN − VDO
- Precision enable
- Adjustable soft start
- Package: DFN3×3-8
应用
- Regulation to noise sensitive applications: ADC and DAC circuits, precision amplifiers, PLLs/VCOs, and clocking ICs
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation
