Description; Features - Epson S1F76540M0C Series Technical Manual

Table of Contents

1. DESCRIPTION

1.1 Description

S1F76540 consists of charge pump type DC/DC converter and voltage regulator with high efficiency and low

power consumption using the CMOS process.

The charge pump type DC/DC converter uses four (three or two) external capacitors to negatively generate the

output voltage, which is four times (triple or twice) higher than for the input voltage.

The voltage regulator uses two external resistors to set the output voltage generated by the DC/DC converter to

any value and supply the regulated output voltage. If necessary, you can provide the negative temperature

gradient characteristics to the regulated output voltage, and it is appropriate for LCD power.

S1F76540 turns the power off with an external signal, enabling you to reduce the wasteful current for system

suspension. It is therefore appropriate for battery-driven portable devices.

• Charge pump type DC/DC converter (negatively quadruple, triple, or double)

• Built-in voltage regulator (voltage stabilization output circuit)

• High-level conversion efficiency ･･････････ 96% (VI= -5V, Typ.)

• Low consumption current ････････････････ 100mA (VI= -5V, At quadruple boosting, Typ.)

• High output capability ･･･････････････････ 20mA (Max.)

• Input voltage range ･････････････････････ -2.4 to -5.5V (At quadruple boosting)

• DC/DC converter output voltage ･･････････ Input voltage | × 4 (At quadruple boosting, Max.)

• Built-in for highly accurate regulator ･･･････ -1.5V±0.05V (At CT0)

standard voltage

• Regulator output voltage temperature ･･･････ -0.05, -0.15, -0.35, -0.55 (%/°C)

gradient function

• Standby current (At power-off) ････････････ 5µA (Max.)

• Adding external parts enables quintuple or more high-magnification booster and regulator.

• Power-off function by external signal

• Completely-self-contained oscillation circuit

• Compact and slim package product (SSOP2-16PIN)

• This IC is not designed for strong radiation activity proof.

S1F76540M0C Series Technical Manual

(Rev.1.1)

-2.4 to -7.3V (At 3rd boosting)

-2.4 to -11V (At double boosting)

EPSON

1. DESCRIPTION

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