參數(shù)資料
型號(hào)： LT3581IMSE#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, PDSO16
封裝： LEAD FREE, PLASTIC, MSOP-16
文件頁(yè)數(shù)： 4/36頁(yè)
文件大小： 498K
代理商： LT3581IMSE#TRPBF
LT3581
3581f
operaTion
Refer to the State Diagram (Figure 2) for the following
description of the LT3581’s operation during a fault event.
When a fault is detected, in addition to the FAULT pin being
pulled low internally, the LT3581 also disables its CLKOUT
pin,turnsoffitspowerswitches,andtheGATEpinbecomes
high impedance. The external PMOS, M1, turns off when
the gate of M1 is pulled up to its source by the external
RGATE resistor (see Block Diagram). With the external
PMOS turned off, the power path from VIN to VOUT is cut
off, protecting power components downstream.
At the same time, a timeout sequence commences where
the SS pin is charged up to 1.8V (the SS pin will continue
charging up to 2.1V and be held there in the case of a
FAULT1eventthathasstillnotended),andthendischarged
to 50mV. This timeout period relieves the part, the PMOS,
and other downstream power components from electrical
Figure 4. Output Short Circuit Protection of the LT3581
VOUT
10V/DIV
VCLKOUT
2V/DIV
IL
2A/DIV
VFAULT
5V/DIV
3581 F04
5s/DIV
and thermal stress for a minimum amount of time as set
by the voltage ramp rate on the SS pin.
In the absence of faults, the FAULT pin is pulled high by the
external RFAULT resistor (typically 100k). Figure 4 shows
the events that accompany the detection of an output
short on the LT3581.
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LT3582EUD#PBF 功能描述:IC REG BOOST INV ADJ DL 16QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁(yè)面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2
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