RAA212422 Datasheet | Renesas

Dual channel 40V 1.1A and 5.5V 1.5A synchronous buck regulators FN9326 Rev.2.00 Feb 27, 2020 The RAA212422 is a dual output regulator bining a 1.1A synchronous buck regulator with an input range of 3V to 40V with a 1.5A synchronous buck regulator with an input voltage range of 2.7V to 5.5V. Because both high-side and low-side MOSFETs are integrated for both regulators, the RAA212422 provides an easy-to-use, high-efficiency, and low BOM-count solution for a variety of applications. Both regulators feature internal and external pensation, thermal shutdown, and power-good functions. The wide VIN buck regulator Features a PFM mode for improved efficiency at light load. This feature can be disabled if forced PWM mode is desired. It switches at a default frequency of 500k Hz; however, it can also be programmed using an external resistor from 300k Hz to 2MHz. Other Features include programmable soft-start and hiccup overcurrent protection. The low VIN buck regulator operates at 1MHz switching frequency, which provides fast load transient response allowing the use of small inductors. Because the high-side MOSFET of the low VIN buck regulator is a PMOS, a boot capacitor is not needed, reducing the external ponent count. They operate at 100% duty cycle and in PWM mode only, reducing noise susceptibility and RF interference. The RAA212422 is available in a small Ro HS pliant 3mmx6mm TDFN plastic package with a full-range industrial temperature of -40°C to +125°C. Related Literature For a full list of related documents, visit our website: - RAA212422 device page + VIN1 - CVCC + VIN2 - VIN1 EN1 SYNC1 FS1 P1 SS1 VCC1 LX1 BOOT1 FB1 PG1 GND1 RAA212422 VIN2 VIN3 EN2 LX2 P2 GND2 FB2 PG2 L1 CBOOT CFF1 + R1 COUT1 VOUT1 R2 -...