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S8V9Fx Step-Up/Step-Down Voltage Regulators

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.

Products in category “S8V9Fx Step-Up/Step-Down Voltage Regulators”

Pololu item #: 4964
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:
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 
RoHS 3 compliant
Out of stock.
Quantity:
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 
RoHS 3 compliant
Out of stock.
Quantity:
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 
RoHS 3 compliant
Out of stock.
Quantity:
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 
RoHS 3 compliant
Out of stock.
Quantity:
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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