Analog Devices Inc. LT7200S Quad Step-Down Regulators
Analog Devices Inc. LT7200S Quad Synchronous Monolithic Step-Down Regulators offer high efficiency with 5A sinking/sourcing capability to the load per channel. The multichannel flexibility of the device ensures complex systems are powered with a compact layout. Suited for various supply applications from a 3.3V, 5V to 12V supply, the LT7200S operates from 2.9V to 18V.
The ADI LT7200S Quad Step-Down Regulators supply a programmable operating frequency from 400kHz to 3MHz with an external resistor or external synchronization for switching noise-sensitive applications. A unique “phase lockable, controlled on-time, constant frequency, current mode” architecture allows for high frequency, high step-down applications while requiring fast transient responses. The high-frequency capability enables smaller surface-mount inductors and capacitors. The MODE/SYNC pin selects low noise Forced Continuous Mode (FCM) or high-efficiency Discontinuous Mode (DCM). The PHMODE pin permits run-out-of-phase among four channels, which decreases the required input and output capacitors.
The LT7200S regulators utilize second-generation Silent Switcher technology with integrated bypass capacitors to provide a highly efficient solution at high frequencies with superior EMI performance. The LT7200S is available in a low profile 5mm x 6mm 48-Lead LQFN package.
Features
- Silent Switcher 2 architecture
- Ultralow EMI
- Eliminated PCB layout sensitivity
- Internal bypass caps reduce radiated EMI
- 2.9V to 18V; PVIN: 1.5V to 18V wide SVIN range
- 0.5V to 0.9VIN wide VOUT range
- ±5A/ channel; up to ±20A output current
- 0.5V ±0.8% over temperature accurate reference
- High efficiency up to 96%
- 12ns minimum on-time, True 12V to 1V at 2MHz
- Individual power good status output
- 400kHz to 3MHz programmable multi-phase, synchronizable frequency
- Current mode excellent line and load transient response
- User Selectable Discontinuous Mode® (DCM) or Forced Continuous Mode (FCM) operation
- Flexible individual internal compensation for ease of use, external for fast transient
- Accurate individual 1.2V EN/ run pin threshold
- Individual output tracking and soft-start
- Low profile 5mm x 6mm 48-Lead LQFN package
Applications
- Distributed power systems, server power
- Point of load supply for ASIC, FPGA
Videos
Typical Application
