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ADP151 Folha de dados(PDF) 1 Page - Analog Devices |
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ADP151 Folha de dados(HTML) 1 Page - Analog Devices |
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1 / 47 page  Data Sheet LT3046 20V, 200mA, Ultra-Low Noise, Ultra-High PSRR, Linear Regulator 19-101798; Rev 0; 10/23 DOCUMENT FEEDBACK TECHNICAL SUPPORT One Analog Wa y, Wilmington, MA 01887 - 2356, U.S.A. T el: 781.329.4700 © 2023 Analog D evic es, Inc. Al l rig hts r eser ved. FEATURES Ultra-Low RMS Noise: 0.8μVRMS (10Hz to 100kHz) Ultra-Low Noise: 2.2nV/√Hz at 10kHz Ultra-Low 1/f Noise: 2.5μVP-P (0.1Hz to 10Hz) Ultra-High PSRR: 82dB at 1MHz Output Current: 200mA Wide Input-Voltage Range: 2.2V to 20V Single Capacitor Improves Noise and PSRR SET Pin Current: 100μA, ±0.5% Initial Accuracy Single Resistor Programs Output Voltage Programmable Current Limit Low Dropout Voltage: 300mV Output-Voltage Range: 0.2V to 19V Programmable Power Good Fast Start-Up Capability Precision Enable/UVLO Parallelable for Lower Noise and Higher Current Internal Current Limit with Foldback Minimum Output Capacitor: 4.7μF Ceramic Compact, Low-Profile, 12-Lead, 3mm × 3mm, DFN Package APPLICATIONS RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs Very Low-Noise Instrumentation High-Speed/High-Precision Data Converters Post-Regulator for Switching Supplies GENERAL DESCRIPTION The LT3046 is a high-performance, low-dropout linear regulator featuring Analog Devices, Inc. ultra-low noise and ultra-high PSRR architecture for powering noise- sensitive applications. Designed as a precision current reference followed by a high-performance voltage buffer, the LT3046 can be easily paralleled to further reduce noise, increase output current, and spread heat on the PCB. The device supplies 200mA at a typical 300mV dropout voltage. Operating quiescent current is nominally 3.7mA and drops to 26μA in shutdown. The LT3046’s wide output-voltage range (0.2V to 19V) while maintaining unity-gain operation provides virtually constant output noise, PSRR, bandwidth, and load regulation, independent of the programmed output voltage. Additionally, the regulator features programmable current limit, fast start-up capability, and programmable power good to indicate output voltage regulation. Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback and thermal limit with hysteresis. The LT3046 is available in a thermally enhanced, 12-lead, 3mm × 3mm, DFN package. TYPICAL APPLICATION Figure 1. Typical Application Figure 2. PSRR vs. Frequency 4.7µF* 200kΩ 4.7µF 33.2kΩ 453kΩ 4.7µF IN EN/UV PG VIN 5V SET GND ILIM OUTS OUT LT3046 *OPTIONAL, SEE APPLICATIONS INFORMATION VOUT 3.3V IOUT(MAX) 200mA PGFB 100µA 49.9kΩ VIN = 5V VOUT = 3.3V CSET = 4.7µF COUT = 22µF IL = 200mA FREQUENCY (Hz) 10 100 1k 10k 100k 1M 10M 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 |
Nº de peça semelhante - ADP151 |
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Descrição semelhante - ADP151 |
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