Analog Devices Inc. LTC®3644 Monolithic Step-Down Regulators
Analog Devices Inc. LTC®3644 Monolithic Step-Down Regulators feature quad 1.25A output and can operate from input supplies up to 17V. The switching frequency is internally fixed to 1MHz or 2.25MHz. The regulators have a ±50% synchronization range. The devices feature ultralow quiescent current and high efficiency over a wide VIN and VOUT range.
Features
- Quad step-down outputs 1.25A per channel
- Wide VIN range 2.7V to 17V
- Wide VOUT range 0.6V to VIN
- 1.25A/2.5A/3.75A/5A IOUT configurable with one inductor
- Integrated 300mΩ P-Channel/80mΩ N-Channel MOSFETs provide up to 93% efficiency
- No-load burst mode operation IQ < 10µA with all channels enabled
- Constant frequency (1MHz/2.25MHz) with ±50% frequency synchronization range
- ±1% output voltage accuracy
- Current mode operation for excellent line and load transient response
- Full dropout operation (100% duty cycle)
- Phase shift programmable with external clock
- 5mm × 5mm × 1.72mm BGA package
Applications
- Battery powered systems
- Point-of-load supplies
- Portable – handheld scanners and cameras
TYPICAL APPLICATION
發佈日期: 2022-10-24
| 更新日期: 2022-11-08