Analog Devices Inc. LT®8622S/LT8624S Synchronous Step-Down Regulators
Analog Devices Inc. LT®8622S/LT8624S Synchronous Step-Down Regulators utilize third-generation Silent Switcher technology. This technology combines an ultra-low noise reference with Silent Switcher architecture to achieve high efficiency and excellent wideband noise performance. The Analog Devices Inc. regulators' innovative design ensures exceptional low-frequency (0.1Hz to 100kHz) output noise performance in a switching regulator. The output voltage can be programmed with a single resistor, enabling unity gain operation across the output range and maintaining consistent output noise regardless of output voltage. Additionally, Silent Switcher architecture minimizes EMI emissions while maintaining high efficiency at elevated switching frequencies.
Features
- Silent Switcher®3 architecture
- Ultra-low RMS noise (10Hz to 100kHz) 4μVRMS
- Ultra-low spot noise: 4nV/√Hz at 10kHz
- Ultra-low EMI emissions on any PCB
- Internal bypass capacitors reduce radiated EMI
- High efficiency at high frequency
- Ultrafast transient response with high gain error amplifier
- 2.7V to 18V input voltage range
- 0V to (PVIN - 0.5V) output voltage range
- 2A/4A maximum continuous output current
- Fast 12ns minimum switch on time
- Precision current reference 100μA ± 0.8% over temperature
- Differential remote sense ensures accuracy over load
- PolyPhase operation up to 12x phases
- Forced continuous mode capability
- Adjustable and synchronizable from 300kHz to 6MHz
- Programmable power good
- Small 20-lead 4mm x 3mm LQFN package
Applications
- RF power supplies, PLLs, VCOs, Mixers, LNAs, PAs
- High-speed/high-precision ADCs/DACs
- Low-noise instrumentation
TYPICAL APPLICATION
Publicado: 2024-06-24
| Actualizado: 2024-07-15