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S-8340 Datasheet - Seiko Instruments USA

S-8340_SeikoInstrumentsUSA.pdf

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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.

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

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

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

S-8340 Features

* 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

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