Overview
Description
The RAA212832 is a triple output regulator combining a 4.5V to 72V input, 0.5A buck regulator with two LDO outputs. The buck regulator has a fixed switching frequency of 350kHz in Continuous Conduction mode (CCM) and operates in Pulse Skipping mode at lighter loads when it enters Discontinuous Conduction mode (DCM). The two LDOs operate from a 12V (or lower) input voltage. The LDOs are rated at 100mA and 50mA of output current. The buck regulator output is fixed at either 6V or 12V, which is controlled by the STBY pin. The LDOs can support an input voltage range of 6V to 12V and the output voltages are fixed at 3.3V and 5V. The IC provides a compact, highly integrated power management solution. Its integrated buck regulator and LDO outputs minimize system component count.
Features
- Buck Converter
- 4.5V to 72V input voltage
- Fixed output voltage 12V or 6V
- 500mA output load capability
- 0.6Ω high-side MOSEFT rDS(ON)
- Fixed switching frequency 350kHz in CCM operation
- Pulse skipping mode in DCM operation
- Standby function by STBY pin setting output voltage
- High-side OCP, UVP, UVLO, OTP fault protection
- 5V LDO Regulator
- 6V to 12V input voltage
- Fixed output voltage 5V
- 100mA output load capability
- Current limit foldback function
- 3.3V LDO Regulator
- 4.5V to 12V input voltage
- Fixed output voltage 3.3V
- 50mA output load capability
- Current limit foldback function
- SOIC8-E package
Comparison
Applications
Documentation
Featured Documentation
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| Datasheet | PDF 3.29 MB | |
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Design & Development
Boards & Kits
Demonstration
RTKA212832DR0000BU
Active
Sync Buck Eval Board with 14V to 72V Vin Range, 12V 500mA Buck Output, 5V 100mA and 3.3V 50mA LDO Outputs
The RTKA212832DR0000BU provides a simple platform to demonstrate the performance of RAA212832, a synchronous buck regulator with 2 LDO outputs. The evaluation board can support a wide input voltage range of 14V to 72V. The buck output is 12V capable of 500mA. The buck output is used as the input...
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Models
ECAD Models
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