RAA211xxx Family of DC/DC Regulators
Renesas' DC/DC regulators power the highest-precision loads with excellent accuracy
Renesas' RAA211xxx product family, with its 1% accurate voltage reference (-45°C to +105°C), powers the highest-precision loads with excellent accuracy (0.5% accuracy when operating at +25°C ambient temperature). Its unique pin-compatible wide VIN buck variants with integrated FETs support up to 5 A of continuous output current with premium load and line regulation performance. These regulators integrate useful functions such as internal or programmable soft-start and a power good indicator. For safe operation, they also offer protection features such as cycle-by-cycle peak and valley current limit, input voltage UVLO, output voltage undervoltage (short-circuit) protection, and thermal shutdown. They come in either 20ld QFN (with fixed SS ramp time) or 16ld HTSSOP (with adj SS ramp time) package. This family's efficiency and scalability to the asynchronous 835 buck family offer excellent light-load performance and design options.
The RAA211xxx uses peak-current mode control architecture. Its PWM switching frequency is programmable to provide the best trade-off between transient response and efficiency. It also supports PFM operation to maximize light load efficiency and an external bias LDO input to further reduce power dissipation across the load range. The regulator also has an internal loop compensation circuit to reduce the external component count and BOM cost.
The RAA211xxx provides useful functions such as internal or programmable soft-start and a power good indicator. For safe operation, the RAA211xxx also offers protection features such as cycle-by-cycle peak and valley current limit, input voltage UVLO, output voltage undervoltage (short-circuit) protection, and thermal shutdown.
- 835 is asynchronous, while 250/450/630/820 are synchronous buck regulators
- Adjustable VOUT from 0.8 V to ~90% of VIN
- Default 400 kHz or adjustable switching frequency from 200 kHz to 800 kHz
- ±1% load regulation accuracy from -40°C to +125°C, ±0.5% load regulation accuracy at +25°C
- PFM operation and DEM at light load with integrated external bias LDO and power good indicator
- 95 μA typical quiescent current
- Cycle-by-cycle peak and valley current limit, input voltage UVLO, output voltage undervoltage (short-circuit) protection, and thermal shutdown
- Industrial power systems
- Distributed power supplies and general purpose POL
- Telecommunication base station power supplies
- High-voltage single-board systems or unregulated wall transformers
- Mobility devices using more than 8 cell battery packs
RAA211xxx Family of DC/DC Regulators
Billede | Manufacturer Part Number | Beskrivelse | Tilgængeligt antal | Pris | Vis detaljer | |
---|---|---|---|---|---|---|
![]() | ![]() | RAA211250GNP#HA0 | IC REG BUCK ADJ 5A 20QFN | 11891 - Immediate | $14.59 | Vis detaljer |
![]() | ![]() | RAA211250GSP#HA0 | IC REG BUCK ADJ 5A 16HTSSOP | 1351 - Immediate | $14.59 | Vis detaljer |
![]() | ![]() | RAA211450GNP#HA0 | IC REG BUCK ADJ 5A 20QFN | 2592 - Immediate | $23.04 | Vis detaljer |
![]() | ![]() | RAA211450GSP#HA0 | IC REG BUCK ADJ 5A 16HTSSOP | 1718 - Immediate | $23.04 | Vis detaljer |
![]() | ![]() | RAA211630GNP#HA0 | IC REG BUCK ADJ 3A 20QFN | 6034 - Immediate | $23.04 | Vis detaljer |
![]() | ![]() | RAA211630GSP#HA0 | IC REG BUCK ADJ 3A 16HTSSOP | 1089 - Immediate | $23.04 | Vis detaljer |
![]() | ![]() | RAA211820GNP#HA0 | IC REG BUCK ADJ 2A 20QFN | 3650 - Immediate 30000 - Factory Stock | $23.04 | Vis detaljer |
![]() | ![]() | RAA211820GSP#HA0 | IC REG BUCK ADJ 2A 16HTSSOP | 2540 - Immediate | $23.04 | Vis detaljer |
![]() | ![]() | RAA211835GNP#HA0 | IC REG BUCK ADJ 3A 20QFN | 5508 - Immediate | $23.04 | Vis detaljer |
![]() | ![]() | RAA211835GSP#HA0 | IC REG BUCK ADJ 3A 16HTSSOP | 2136 - Immediate 67500 - Factory Stock | $23.04 | Vis detaljer |
Evaluation Boards
Billede | Manufacturer Part Number | Beskrivelse | Tilgængeligt antal | Pris | Vis detaljer | |
---|---|---|---|---|---|---|
![]() | ![]() | RTKA211250DE0000BU | EVAL BOARD FOR RAA211250 | 9 - Immediate | $511.23 | Vis detaljer |
![]() | ![]() | RTKA211250DE0010BU | EVAL BOARD FOR RAA211250 | 19 - Immediate | $499.01 | Vis detaljer |
![]() | ![]() | RTKA211450DE0000BU | EVAL BOARD FOR RAA211450 | 19 - Immediate | $559.74 | Vis detaljer |
![]() | ![]() | RTKA211450DE0010BU | EVAL BOARD FOR RAA211450 | 15 - Immediate | $559.74 | Vis detaljer |
![]() | ![]() | RTKA211630DE0000BU | EVAL BOARD FOR RAA211630 | 17 - Immediate | $644.29 | Vis detaljer |
![]() | ![]() | RTKA211630DE0010BU | EVAL BOARD FOR RAA211630 | 6 - Immediate | $571.84 | Vis detaljer |
![]() | ![]() | RTKA211820DE0000BU | EVAL BOARD FOR RAA211820 | 21 - Immediate | $535.49 | Vis detaljer |
![]() | ![]() | RTKA211820DE0010BU | EVAL BOARD FOR RAA211820 | 16 - Immediate | $559.74 | Vis detaljer |
![]() | ![]() | RTKA211835DE0000BU | EVAL BOARD FOR RAA211835 | 19 - Immediate | $474.75 | Vis detaljer |
![]() | ![]() | RTKA211835DE0010BU | EVAL BOARD FOR RAA211835 | 22 - Immediate | $523.39 | Vis detaljer |