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S8V9Fx Step-Up/Step-Down Voltage Regulators
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The S8V9Fx family of efficient switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) convert both higher and lower input voltages to a regulated output voltage. They take input voltages from 1.4 V to 16 V and increase or decrease them as necessary, offering typical efficiencies of 80% to 90% and typical continuous output currents over 1 A for input voltages close to the output voltage. (Note: The minimum start-up voltage is 2.7 V; see the individual product pages for details.)
The flexibility in input voltage offered by this family of regulators is especially well-suited for battery-powered applications in which the battery voltage begins above the regulated voltage and drops below as the battery discharges. Without the typical restriction on the battery voltage staying above the required voltage throughout its life, new battery packs and form factors can be considered.
The S8V9Fx regulators have under-voltage lockout and over-current protection. A thermal shutdown feature also helps prevent damage from overheating and a soft-start feature limits the inrush current and gradually ramps the output voltage on startup.
| Regulator | Output voltage | Typical max current output* | Input voltage range | Size | Special features | Price |
|---|---|---|---|---|---|---|
| #4964: S8V9F3 | 3.3 V | 1 A – 1.5 A | 1.4 V – 16 V (2.7 V startup) |
0.4″ × 0.65″ | Under-voltage lockout, over-current protection, thermal shutdown, optional enable input, soft-start |
$7.49 |
| #4965: S8V9F5 | 5 V | $7.49 | ||||
| #4966: S8V9F6 | 6 V | $7.49 | ||||
| #4967: S8V9F7 | 7.5 V | 1 A | $7.49 | |||
| #4968: S8V9F9 | 9 V | $7.49 | ||||
| *For input voltages close to the output. Actual achievable maximum continuous current is a function of input and output voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information. | ||||||
Compare all products in this category
Products in category “S8V9Fx Step-Up/Step-Down Voltage Regulators”
| Pololu item #: 4964 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
| Output voltage |
Typical max current output* |
Input voltage range | Size |
|---|---|---|---|
| 3.3 V | 1.5 A | 1.4 V – 16 V (2.7 V startup) |
0.4″ × 0.65″ |
*For input voltages close to the output. Actual achievable maximum continuous current is a function of input and output voltage and is limited by thermal dissipation. See the output current graphs on the product page for more information.
| Pololu item #: 4965 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
| Output voltage |
Typical max current output* |
Input voltage range | Size |
|---|---|---|---|
| 5 V | 1.5 A | 1.4 V – 16 V (2.7 V startup) |
0.4″ × 0.65″ |
*For input voltages close to the output. Actual achievable maximum continuous current is a function of input and output voltage and is limited by thermal dissipation. See the output current graphs on the product page for more information.
| Pololu item #: 4966 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
| Output voltage |
Typical max current output* |
Input voltage range | Size |
|---|---|---|---|
| 6 V | 1.5 A | 1.4 V – 16 V (2.7 V startup) |
0.4″ × 0.65″ |
*For input voltages close to the output. Actual achievable maximum continuous current is a function of input and output voltage and is limited by thermal dissipation. See the output current graphs on the product page for more information.
| Pololu item #: 4967 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
| Output voltage |
Typical max current output* |
Input voltage range | Size |
|---|---|---|---|
| 7.5 V | 1 A | 1.4 V – 16 V (2.7 V startup) |
0.4″ × 0.65″ |
*For input voltages close to the output. Actual achievable maximum continuous current is a function of input and output voltage and is limited by thermal dissipation. See the output current graphs on the product page for more information.
| Pololu item #: 4968 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
| Output voltage |
Typical max current output* |
Input voltage range | Size |
|---|---|---|---|
| 9 V | 1 A | 1.4 V – 16 V (2.7 V startup) |
0.4″ × 0.65″ |
*For input voltages close to the output. Actual achievable maximum continuous current is a function of input and output voltage and is limited by thermal dissipation. See the output current graphs on the product page for more information.
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