XC6402_1 Datasheet, PDF (15/31 Pages) Torex Semiconductor – High Current, High Speed LDO Regulators, Voltage Detector Function

XC6402
Series
■OPERATIONAL EXPLANATION (Continued)
<EN Pin>
The IC's internal regulator circuitry can be shut down via the signal from the EN pin with the XC6402C series. In shutdown
mode, output at the VROUT pin will be pulled down to the VSS level via R1 & R2. Note that as the XC6402*E to K types of
the XC6402C series are 'High Active / No Pull-Down' and XC6402*R to U types of the XC6402C series are 'Active LOW / No
Pull-Up', operations will become unstable with the EN pin open (See the chart below).
SERIES
XC6402C A ~ D
XC6402C E ~ K
XC6402C L ~ P
XC6402C R ~ U
EN INPUT LOGIC
High Active with pull-down resistor
High Active with no pull-down resistor
Low Active with pull-up resistor
Low Active with no pull-up resistor
We suggest that you use this IC with either a VIN voltage or a VSS voltage input at the EN pin. If this IC is used with the
correct specifications for the EN pin, the IC will operate normally. However, supply current may increase as a result of
through current in the IC's internal circuitry if a voltage other than VIN or VSS is applied.
■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 strengthen VIN and VSS wiring in particular.
3. Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible.
Should rapid input fluctuation or load fluctuation occur, please increase the capacitor value such as CIN or CL to stabilize
the operation.
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