SLUSDW4A October 2019 – November 2020 LMR50410-Q1
PRODUCTION DATA
PIN | TYPE(1) | DESCRIPTION | |
---|---|---|---|
NAME | NO | ||
CB | 1 | P | Bootstrap capacitor connection for high-side FET driver. Connect a high quality 100-nF capacitor from this pin to the SW pin. |
GND | 2 | G | Power ground terminals, connected to the source of low-side FET internally. Connect to system ground, ground side of CIN and COUT. Path to CIN must be as short as possible. |
FB | 3 | A | Feedback input to the converter. Connect a resistor divider to set the output voltage. Never short this terminal to ground during operation. For fixed output version, directly connect to output point. |
EN | 4 | A | Precision enable input to the converter. Do not float. High = on, low = off. Can be tied to VIN. Precision enable input allows adjustable UVLO by external resistor divider. |
VIN | 5 | P | Supply input terminal to internal bias LDO and high-side FET. Connect to input supply and input bypass capacitors CIN. Input bypass capacitors must be directly connected to this pin and GND. |
SW | 6 | P | Switching output of the converter. Internally connected to source of the high-side FET and drain of the low-side FET. Connect to power inductor. |