LM2830, LM2830-Q1

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SNVS454E – AUGUST 2006 – REVISED DECEMBER 2014

Feature Description (continued)

7.3.4 Current Limit

The LM2830 device uses cycle-by-cycle current limiting to protect the output switch. During each switching cycle,

a current limit comparator detects if the output switch current exceeds 1.75 A (typical), and turns off the switch

until the next switching cycle begins.

7.3.5 Thermal Shutdown

Thermal shutdown limits total power dissipation by turning off the output switch when the IC junction temperature

exceeds 165°C. After thermal shutdown occurs, the output switch does not turn on until the junction temperature

drops to approximately 150°C.

7.4 Device Functional Modes

In normal operational mode, the device will regulate output voltage to the value set with resistive divider.

In addition, this device has an enable (EN) pin that lets the user turn the device on and off by driving this pin high

and low. Default setup is that this pin is connected to VIN through pull up resistor (typically 100 kΩ). When enable

pin is low the device is in shutdown mode consuming typically only 30 nA, making it ideal for applications where

low power consumption is desirable.

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Product Folder Links: LM2830 LM2830-Q1