NCP5500, NCV5500, NCP5501, NCV5501 LDO Voltage Regulator 500 mA These linear low drop voltage regulators provide up to 500 mA over NCP5500, NCV5500, NCP5501, NCV5501 NCP5500 NCP5501 NCV5500 NCV5501 V V out in Output Input C in C out 10 F R * 1 4.7 F Enable EN* NC/ADJ* R L GND OFF ON R * 2 GND *Applicable to NCP5500/NCV5500 only. Figure 1. Typical Application Circuit PIN FUNCTION DESCRIPTIONS DPAK 3 DPAK 5 SOIC8 Pin Pin No. Pin No. Pin No. Name Description 1 8 EN Enable. This pin allows for on/off control of the regulator. High level turns on the output. To disable the device, connect to ground. If this function is not in use, con- nect to V . in 1 2 1 V Positive power supply input voltage. in 2, Tab 3, Tab 2, 3, 6, 7 GND Ground. This pin is internally connected to the Tab heat sink. 3 4 4 V Regulated output voltage. out 5 5 NC/ADJ No connection (Fixed output versions). Voltageadjust input (Adjustable output version). Use an external voltage divider to set the output voltage over a range of 1.25 V to 5.0 V. V V in out Current Limit and Error Saturation Sense Amplifier Bandgap Reference + Thermal Shutdown Connection for Fixed Output Enable EN* Block* GND Connection for Adjustable Output NC / ADJ* *Applicable to NCP5500/NCV5500 only. Figure 2. Block Diagram