- 您现在的位置：买卖IC网 > PDF目录43900 > L6591TR (STMICROELECTRONICS) SWITCHING CONTROLLER, PDSO16 PDF资料下载
参数资料
| 型号： | L6591TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO16 |
| 封装： | ROHS COMPLIANT, SOP-16 |
| 文件页数： | 6/32页 |
| 文件大小： | 560K |
| 代理商： | L6591TR |
第1页第2页第3页第4页第5页当前第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
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
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
相关PDF资料 |
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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6598 | 功能描述:PMIC 解决方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| L6598_04 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:HIGH VOLTAGE RESONANT CONTROLLER |
| L6598D | 功能描述:PMIC 解决方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| L6598D013TR | 功能描述:PMIC 解决方案 High Volt Reson Cont RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| L6598D016TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High voltage resonant controller |
发布紧急采购，3分钟左右您将得到回复。