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LM2830XMF 数据表(PDF) 11 Page - Texas Instruments

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部件名 LM2830XMF
功能描述  LM2830/-Q1 High-Frequency 1.0-A Load Step-Down DC-DC Regulator
Download  37 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

LM2830XMF 数据表(HTML) 11 Page - Texas Instruments

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LM2830, LM2830-Q1
www.ti.com
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.
Copyright © 2006–2014, Texas Instruments Incorporated
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Product Folder Links: LM2830 LM2830-Q1


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