ZHCSHC6I January 2007 – December 2017 LM5022
PRODUCTION DATA.
| PIN | I/O | DESCRIPTION | ||
|---|---|---|---|---|
| NO. | NAME | |||
| 1 | VIN | I | Source input voltage: Input to the startup regulator. Operates from 6 V to 60 V. | |
| 2 | FB | I | Feedback pin: Inverting input to the internal voltage error amplifier. The noninverting input of the error amplifier connects to a 1.25-V reference. | |
| 3 | COMP | I/O | Error amplifier output and PWM comparator input: The control loop compensation components connect between this pin and the FB pin. | |
| 4 | VCC | O | Output of the internal, high-voltage linear regulator: This pin must be bypassed to the GND pin with a ceramic capacitor. | |
| 5 | OUT | O | Output of MOSFET gate driver: Connect this pin to the gate of the external MOSFET. The gate driver has a 1-A peak current capability. | |
| 6 | GND | — | System ground | |
| 7 | UVLO | I | Input undervoltage lockout: Set the start-up and shutdown levels by connecting this pin to the input voltage through a resistor divider. A 20-µA current source provides hysteresis. | |
| 8 | CS | I | Current sense input: Input for the switch current used for current mode control and for current limiting. | |
| 9 | RT/SYNC | I | Oscillator frequency adjust pin and synchronization input: An external resistor connected from this pin to GND sets the oscillator frequency. This pin can also accept an AC-coupled input for synchronization from an external clock. | |
| 10 | SS | I | Soft-start pin: An external capacitor placed from this pin to ground is charged by a 10-µA current source, creating a ramp voltage to control the regulator start-up. | |