Datasheet4U Logo Datasheet4U.com

S-8340 - PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Datasheet Summary

Description

GND pin Reference voltage source pass capacitor connection pin Soft-start capacitor connection pin Shutdown pin “H” : Normal operation (step-up operating) “L” : Entire circuit stopped (step-up stopped) IC power supply pin Output voltage fixed output type : Output voltage monitoring pin [Output volta

Features

  • s.
  • 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.

📥 Download Datasheet

Datasheet preview – S-8340

Datasheet Details

Part number S-8340
Manufacturer Seiko Instruments USA
File Size 891.27 KB
Description PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Datasheet download datasheet S-8340 Datasheet
Additional preview pages of the S-8340 datasheet.

📁 Similar Datasheet

  • S-8340 - SWITCHING REGULATOR CONTROLLER (ABLIC)
  • S-8341 - SWITCHING REGULATOR CONTROLLER (ABLIC)
  • S-8310 - PWM Step-Up Switching Regulator (Seiko)
  • S-8311 - PWM Step-Up Switching Regulator (Seiko)
  • S-8321 - SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR (Seiko)
  • S-8322 - SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR (Seiko)
  • S-8323 - SMALL PACKAGE PWM CONTROL STEP-UP SWITCHING REGULATOR (Seiko)
  • S-8327 - SMALL PACKAGE PWM CONTROL STEP-UP SWITCHING REGULATOR (Seiko)
  • S-8333 - SWITCHING REGULATOR CONTROLLER (ABLIC)
  • S-8337 - SWITCHING REGULATOR CONTROLLER (ABLIC)
Other Datasheets by Seiko Instruments USA
  • S-8341 - PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
  • S-8330 - Step-Up Switching Regulator
  • S-8331 - Step-Up Switching Regulator

Full PDF Text Transcription

Click to expand full text
www.DataSheet4U.com Rev.3.1_00 STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8340/8341 Series The S-8340/8341 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage source, oscillation circuit, error amplifier, phase compensation circuit, PWM control circuit (S-8340 Series), and PWM/PFM switching control circuit (S-8341 Series). Since the oscillation frequency is a high 300 kHz or 600 kHz, with the addition of a small external part, the S-8340/8341 Series functions as a highly efficient step-up switching regulator with a high output current. The speed of the output stage is enhanced so that the N-channel power MOS with a low on-resistance can be switched quickly.
Published: |