S1335 datasheet(32/67 Pages) SII

32 / 67 page

HIGH RIPPLE-REJECTION SOFT-START FUNCTION CMOS VOLTAGE REGULATOR

S-1335 Series

Rev.1.3_00

Seiko Instruments Inc.

3. ON / OFF pin

This pin starts and stops the regulator.

When the ON / OFF pin is set to OFF level, the entire internal circuit stops operating, and the built-in P-channel MOS

FET output transistor between the VIN pin and the VOUT pin is turned off, reducing current consumption significantly.

Note that the current consumption increases when a voltage of 0.3 V to 1.0 V is applied to the ON / OFF pin.

The ON / OFF pin is configured as shown in Figure 27 and Figure 28.

3. 1 S-1335 Series A / C / E / G / J / L type

The ON / OFF pin is internally pulled down to the VSS pin in the floating status, so the VOUT pin is set to the VSS

level.

3. 2 S-1335 Series B / D / F / H / K / M type

The ON / OFF pin is not internally pulled up or pulled down to the VSS pin, so do not use it in the floating status.

When not using the ON / OFF pin, connect the pin to the VIN pin.

Table 22

Product Type

ON / OFF Pin

Internal Circuit

VOUT Pin Voltage

Current Consumption

A / B / C / D / E / F /

G / H / J / K / L / M

"H": ON

Operate

Set value

ISS1

A / B / C / D / E / F /

G / H / J / K / L / M

"L": OFF

Stop

VSS level

ISS2

*1. Note that the IC's current consumption increases as much as current flows into the pull-down resistor of

2.2 M

Ω typ. when the ON / OFF pin is connected to the VIN pin and the S-1335 Series A / C / E / G / J / L

type is operating (refer to Figure 27).

VSS

VIN

ON / OFF

VSS

VIN

ON / OFF

Figure 27 S-1335 Series A / C / E / G / J / L type

Figure 28 S-1335 Series B / D / F / H / K / M type

S1335 Datasheet(PDF) 32 Page - Seiko Instruments Inc

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