XC6225 Datasheet, PDF (10/15 Pages) Torex Semiconductor – 30mA High Speed LDO Regulator

XC6225 Series
˙OPERATIONAL EXPLANATION (Continued)
<Current Limiter, Short-Circuit Protection>
The XC6225 series’ fold-back circuit operates as an output current limiter and a short protection circuit for the output pin. When
the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops. When the output
pin is short-circuited to the VSS pin, the current falls and reaches about 15mA.çç
<CE Pin>
The IC's internal circuitry can be shutdown via the signal from the CE pin with the XC6225 series. In the shutdown state, output
at the VOUT pin will be pulled down to the VSS level via R1 & R2. However, with the XC6225B series, the CL auto-discharge
resistor is connected in parallel to R1 and R2 while the power supply is applied to the VIN pin. Therefore, time until the VOUT pin
reaches the VSS level is shorter.
The output voltage is in an undefined state when the CE pin is left open. If this IC is used with the correct voltage for the CE pin,
the logic is fixed and the IC will operate normally. However, the supply current may increase as a result of shoot-through current
in the IC's internal circuitry when a medium voltage is input.
˙NOTES ON USE
1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be exceeded.
2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current.
Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible.
10/15