描述
The LTP7293 is a low VIN, low noise linear regulator with typical 30 mV ultra-low dropout voltage. The LTP7293 could support very low input voltage supply range from 1.1 V to 1.98 V with no external bias supply required. It is also designed to support both fixed output voltage and adjustable output voltage range from 0.5 V to 1.5 V.
Excellent power supply rejection ratio (PSRR) and low noise performance can limit the phase noise and clock jitter generated by the power supply, together with 3 A maximum output current capability and connecting a capacitor to SS pin to program soft-start time externally, it makes LTP7293 ideal power supply for mainly two types of applications---One is digital-loads, such as Field-programmable gate array (FPGA) and digital signal processor (DSP) supplies. The other is for noise sensitive applications, such as RF transceivers, high performance Serializer / DeSerializer (Serdes),
analog-to-digital converter (ADC) and digital-to-analog (DAC) circuits.
The LTP7293 is available in 3 mm × 3 mm QFN-16L packages. It is rated over −40℃ to +125℃ extended industrial temperature range.
优势和特点
- 3 A maximum output current
- Low input voltage range: 1.1 V to 1.98 V, with no external bias supply required
- Flexible Output voltage options:
Fixed output voltage range: VOUT_FIXED = 0.5 V to 1.5 V
Adjustable output voltage range: VOUT_ADJ = 0.5 V to 1.5 V
- Ultra-low noise: 2.2 µV rms, 100 Hz to 100 kHz
- Low dropout voltage: 60 mV typical at 3 A load
- ±1.5 % fixed output voltage accuracy over line, load, and temperature
- Excellent PSRR:
65 dB typical at 10 kHz
55 dB typical at 100 kHz
- Excellent load/line transient response
- Enable and Soft start (SS) control
- Power-good (PG) output
- 3 mm ×3 mm QFN-16L package
应用
- Digital loads: CPU, ASIC, FPGA, DSP, CPLD
- RF transceivers, high performance Serializer/DESerializer (Serdes), analog-to-digital converter (ADC) and digital-to-analog (DAC) circuits.
- Medical and healthcare
- Industrial and instrumentation
