Pilot Rd. 920
Nevada
Las Vegas, Vereinigte Staaten, 89119
[email protected]
https://www.pololu.com/
Am Ostbahnhof 3
Niedersachsen
Clausthal-Zellerfeld, Deutschland, 38678
[email protected]
https://eckstein-shop.de
This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 45 V and efficiently reduces it to 5 V. The board measures only 0.7? × 0.8? yet delivers typical maximum continuous output currents between 3 A and 4 A, depending on the input voltage. An optional enable input can put the regulator in a low-power state with a current draw of 10 µA to 20 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output that indicates when the regulator cannot adequately maintain the output voltage. The pins have a 0.1? spacing, making this board compatible with standard solderless breadboards and perfboards.
- Input voltage: 5 V to 45 V (minimum input subject to dropout voltage considerations)
- Output voltage: 5 V with 4% accuracy
- Typical maximum continuous output current: 3 A to 4 A
- Typical efficiency of 80% to 95%, depending on input voltage, output voltage, and load
- Very low dropout voltage
- Switching frequency: ~700 kHz under heavy loads
- Power-save mode that increases light load efficiency by reducing switching frequency
- Low quiescent current
- Enable input with precise cutoff threshold for disconnecting the load and putting the regulator into a low-power state that draws approximately 10 µA to 20 µA per volt on VIN
- “Power good” output indicates when the regulator cannot adequately maintain the output voltage
- Frequency spread spectrum operation that lowers peak EMI noise
- Under-voltage lockout protection
- Soft-start feature limits inrush current and gradually ramps output voltage
- Integrated reverse-voltage protection up to 40 V, over-current and short-circuit protection, over-temperature shutoff
- Compact size: 0.7? × 0.8? × 0.355? (17.8 mm × 20.3 mm × 9 mm)
- Two 0.086? mounting holes for #2 or M2 screws
Dimensions (Without included optional headers.)
- Size: 0.7? × 0.8? × 0.345?
- Weight: 3.3 g
General specifications
- Minimum operating voltage: 5 V. Subject to dropout voltage considerations.
- Maximum operating voltage: 45 V
- Continuous output current: 3.4 A. Typical maximum continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation.
- Output voltage: 5 V
- Reverse voltage protection?: Y. To -40 V. Connecting supplies over 40 V in reverse can damage the device.
- Maximum quiescent current: 12 mA. While enabled with no load. The maximum quiescent current occurs at lower input voltages. It is reduced to under 1 mA with higher inputs or when the regulator is disabled via the enable pin.
Dimension
Manufacturer according to GPSR
Pololu Corporation, Pilot Rd. 920, 89119 Las Vegas, Nevada, Vereinigte Staaten, [email protected], https://www.pololu.com/
Responsible person according to GPSR
Eckstein GmbH, Am Ostbahnhof 3, 38678 Clausthal-Zellerfeld, Niedersachsen, Deutschland, [email protected], https://eckstein-shop.de