Seiko Instruments USA S-8341
The S-8341 Series contains a PWM/PFM switching control circuit so that it operates using PWM control with a duty ratio of 27% or higher and using PFM control with a duty ratio of lower than 27% to ensure high efficiency in all load ranges. These S-8340/8341 Series serve as ideal main power supply units for portable devices when coupled with the 8-Pin TSSOP package and high oscillation frequencies.| Part No. | S-8341 |
|---|---|
| Datasheet | S-8341 Download |
| Manufacturer |  Seiko Instruments USA |
| Description | PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER |
| Buy | Stock & Price |
FEATURES
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● Oscillation frequency : 600 kHz (A and B types), 300 kHz (C and D types). Output voltage : Selectable in 0.1 V steps between 2.5 to 6.0 V (output voltage fixed output type) Output voltage accuracy : ±2.0% Output voltage external setting (FB) type available. FB terminal voltage (VFB) 1.0 V External parts : Coil, diode, capacitors (3), transistor, and resistor only Duty ratio : 0 to 82% (typ.) PWM control (S-8340 Series) 27 to 82% (typ.) PWM/PFM switching control (S-8341 Series A and B types) 21 to 82% (typ.) PWM/PFM switching control (S-8341 Series C and D types) Low-voltage operation: Oscillation guaranteed to start when VDD = 0.9 V Built-in current limit circuit: Can be set with an external resistor (RSENSE) Soft-start function set by an external capacitor (CSS) Shutdown function Lead-free products
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APPLICATIONS
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● Power supplies for portable equipments such as PDAs, electronic notebooks, and cellular phones Power supplies for audio equipments such...
