Skip to main content
Wide VIN 1.1A with Low VIN 1.5A Synchronous Buck Regulators

Package Information

CAD Model: View CAD Model
Pkg. Type: TDFN
Pkg. Code: LUT
Lead Count (#): 22
Pkg. Dimensions (mm): 5.99 x 3.00 x 0.75
Pitch (mm): 0.5

Environmental & Export Classifications

Moisture Sensitivity Level (MSL) 3
Pb (Lead) Free Yes
ECCN (US)
HTS (US)

Product Attributes

Longevity 2033 Dec
Pkg. Type TDFN
Carrier Type Reel
Country of Assembly MALAYSIA
Country of Wafer Fabrication TAIWAN
Control Type Current Mode
Duty Cycle (%) 100 - 100
Input Voltage (Max) (V) 40
Input Voltage (Max) [Rail 1] (V) 40 - 40
Input Voltage (Max) [Rail 2] (V) 5.5 - 5.5
Input Voltage (Min) (V) 3
Input Voltage (Min) [Rail 1] (V) 3
Lead Count (#) 22
Length (mm) 6
MOQ 6000
Moisture Sensitivity Level (MSL) 3
Output Current (Max) [Rail 1] (A) 1.5
Output Current (Max) [Rail 2] (A) 1.5
Output Voltage (Max) (V) 40
Output Voltage (Max) [Rail 1] (V) 1.1
Output Voltage (Min) (V) 0.6
Output Voltage (Min) [Rail 1] (V) 0.6
Outputs (#) 2
POR Yes
Pb (Lead) Free Yes
Pb Free Category Pb-Free 100% Matte Tin Plate w/Anneal-e3
Peak Efficiency (%) 94
Pitch (mm) 0.5
Pkg. Dimensions (mm) 6.0 x 3.0 x 0.75
Price (USD) $1.74008
Qualification Level Standard
Quiescent Current 8000 µA
SYNCH Capability Yes
Switching Frequency (KHz) 2 - 2
Switching Frequency Range (Typical) (kHz) 300 - 2000
Temp. Range (°C) -40 to +125°C
Thickness (mm) 0.75
Topology [Rail 1] Buck
Width (mm) 3

Description

The RAA212422 is a dual output regulator combining 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 compensation, 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 500kHz; however, it can also be programmed using an external resistor from 300kHz 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 component 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 RoHS compliant 3mmx6mm TDFN plastic package with a full-range industrial temperature of -40°C to +125°C.