SCI7661C0A Ver la hoja de datos (PDF) - Seiko Epson Corp

Número de pieza

componentes Descripción

Fabricante

SCI7661C0A

DC-DC Converter

Seiko Epson Corp 

PF110-10

SCI7661COA/MOA

LOoPwpreoVrdaoutlticoatngse

DC-DC Converter

q 95% Typical Power Efficiency

q Doubled or Tripled Output Voltage

q Internal Voltage Regulator

s DESCRIPTION

The SCI7661COA/MOACMOS DC-DC Converter features high operational performance with low power dissipation.

It consists of two major parts: the booster circuitry and the regulator circuitry. The booster generates a doubled

output voltage(–2.4 to –12V) or tripled output voltage(–3.6 to –18V) from the input (–1.2 to –6V). The regulator is

capable of setting the output to any desired voltage. The regulated voltage can be given one of the three threshold

temperature gradients.

s FEATURES

q High performance with low power dissipation

q Simple conversion of VIN (–5V) to |VIN| (+5V),

2 |VIN| (+10V), 2VIN (–10V) or 3VIN(–15V)

q On-chip output voltage regulator

q Power conversion efficiency–Typ. 95%

q Temperature gradient for LCD power supply – 0.1% / °C, 0.4%/°C or 0.6%/ °C

q Power off by external signals – Stationary current at power off – Max. 2 µA

q Cascade connection–two device connected:

VIN=–5V, VOUT=–20V

q On-chip C'–R oscillator

q Package .................................... SCI7661C0A: DIP-14pin(plastic)

SCI7661M0A: SOP5-14pin(plastic)

s BLOCK DIAGRAM

SCI7661MAA: SSOP2-16pin(plastic)

VDD

OSC1

OSC2

VIN

CAP1–

CAP1+

CAP2–

CAP2+

CR

Oscillator

Voltage

Converter

(I)

Voltage

Converter

(II)

Booster

Regurator

TC1

TC2

Poff

RV

Vreg

Vout

Share Link: