Electronic Components Datasheet Search |
|
PTH04070W Datasheet(PDF) 11 Page - Texas Instruments |
|
PTH04070W Datasheet(HTML) 11 Page - Texas Instruments |
11 / 16 page www.ti.com Power-Up Characteristics t − 10 ms/div VI (1 V/div) VO (1 V/div) II (1 A/div) Current Limit Protection Thermal Shutdown PTH04070W SLTS227B – SEPTEMBER 2004 – REVISED OCTOBER 2007 When configured per the standard application, the PTH04070W power module produces a regulated output voltage following the application of a valid input source voltage. During power up, internal soft-start circuitry slows the rate that the output voltage rises, thereby limiting the amount of in-rush current that can be drawn from the input source. The soft-start circuitry introduces a short time delay (typically 10 ms) into the power-up characteristic. This is from the point that a valid input source is recognized. Figure 10 shows the power-up waveforms for a PTH04070W, operating from a 3-V input and with the output voltage adjusted to 1.8 V. The waveforms were measured with a 2-A resistive load. Figure 10. Power-Up Waveforms The PTH04070W modules protect against load faults with a continuous current limit characteristic. Under a load fault condition, the output current cannot exceed the current limit value. Attempting to draw current that exceeds the current limit value causes the output voltage to be progressively reduced. Current is continuously supplied to the fault until it is removed. Upon removal of the fault, the output voltage will promptly recover. Thermal shutdown protects the module internal circuitry against excessively high temperatures. A rise in temperature may be the result of a drop in airflow, a high ambient temperature, or a sustained current limit condition. If the junction temperature of the internal components exceeds 150 °C, the module shuts down. This reduces the output voltage to zero. The module will start up automatically, by initiating a soft-start power up when the sensed temperature decreases 10 °C below the thermal shutdown trip point. Copyright © 2004–2007, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link(s): PTH04070W |
Similar Part No. - PTH04070W_07 |
|
Similar Description - PTH04070W_07 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |