ACE5024D datasheet(7/13 Pages) ACE

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ACE5024D

Ultra Fast High PSRR Low Noise CMOS Voltage Regulator

VER 1.2

COUT Auto-Discharge Function

ACE5024D series can discharge the electric charge in the output capacitor (COUT), when a low signal to

the CE pin, which enables a whole IC circuit turn off, is inputted via the

N-channel transistor located between the VOUT pin and the VSS pin (cf. Block Diagram). The COUT

auto-

discharge resistance value is set at 60Ω (V

OUT=3.0V @ VIN=5.0V at typical). The discharge time of

the output capacitor (COUT) is set by the COUT auto-discharge resistance (R) and the output capacitor

(COUT). By setting time constant of a COUT auto-discharge resistance value [RDISCHRG] and an output

capacitor value (COUT

) as τ (τ=C x R

DISCHRG), the output voltage after discharge via the N-channel

transistor is calculated by the following formulas.

( V : Output voltage after discharge, VOUT(E)

: Output voltage, t: Discharge time,τ: C

OUT auto-discharge

resistance RDISCHRG×Output capacitor (COUT) value C)

ACE5024D Datasheet(PDF) 7 Page - ACE Technology Co., LTD.