參數(shù)資料
型號： L6591TR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, PDSO16
封裝： ROHS COMPLIANT, SOP-16
文件頁數(shù)： 6/32頁
文件大小： 560K
代理商： L6591TR
Application information
L6591
14/32
Doc ID 14821 Rev 4
Figure 6.
Timing diagram: normal power-up and power-down sequences
At converter power-down the system will lose regulation as soon as the input voltage is so
low that either peak current or maximum duty cycle limitation is tripped. Vcc will then drop
and stop IC’s activity as it falls below the UVLO threshold (10.5 V typ.). The Vcc_OK signal
is de-asserted as the Vcc voltage goes below a threshold Vccrest located at about 5 V. The
HV generator can now restart but, if Vin < Vinstart, as shown in Figure 6, HV_EN is de-
asserted too and the HV generator is disabled. This prevents converter’s restart attempts
and ensures monotonic output voltage decay at power-down.
The low restart threshold Vccrest ensures that, during short circuits, the restart attempts of
the L6591 will have a very low repetition rate, as shown in the timing diagram of Figure 7,
and that the converter will work safely with extremely low power throughput.
The restart threshold of the HV generator is changed when any latched disable function of
the IC is invoked to ensure a real latch-off. For more details see
“Latched shutdown” section.
Vcc
HVG, LVG
HV_EN
Vccon
Vcc
off
Vcc
restart
t
Vin
VHstart
Icharge
0.75 mA
t
Vcc_OK
Power-on
Power-off
Normal
operation
regulation is lost here
PFC_STOP
相關PDF資料
PDF描述
L6599AN SWITCHING CONTROLLER, DIP16
L6599ATDTR SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6599D 0.8 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6599N 0.8 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP16
L6599TR 0.8 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
相關代理商/技術參數(shù)
參數(shù)描述
L6598 功能描述:PMIC 解決方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
L6598_04 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH VOLTAGE RESONANT CONTROLLER
L6598D 功能描述:PMIC 解決方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
L6598D013TR 功能描述:PMIC 解決方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
L6598D016TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High voltage resonant controller
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*