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参数资料
| 型号： | AS1390A-ZQFT |
| 厂商： | ams |
| 文件页数： | 15/21页 |
| 文件大小： | 0K |
| 描述： | IC BOOST CTLR/BUCK CONV 20-QFN |
| 标准包装： | 6,000 |
| 拓扑： | 降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光 |
| 电源电压： | 10 V ~ 30 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（4x4） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
AS1390A, AS1390B
Datasheet - D e t a i l e d D e s c r i p t i o n
8.2 Buck Converter
The buck converter of the AS1390 is working with high-efficiency at a constant-frequency. The buck converter is optimized to supply a C and
with a fixed output voltage of 5V.
The buck converter is working as soon as the AS1390 is powered-up but offers an automatic power save mode. The highly efficient duty cycle
provides low dropout operation, which reduces the power consumption of the system.
8.3 Overvoltage Protection (OVP)
An overvoltage condition is detected when the feedback voltage is higher than the skip threshold (1.28V typ.). The device is than entering the
skip mode. Meaning the next pulse will be skipped and in the next cycle the overvoltage check is done again.
8.4 Overcurrent Protection (OCP)
An overcurrent comparator is monitoring the output current via the sense pin. If an overcurrent condition occurs the transistor will be switched off
immediately. After the overcurrent condition is removed the device is returning to normal operation again.
8.5 Overtemperature Protection (OTP)
As soon as the junction temperature reaches approximately 140°C the AS1390 goes in thermal shutdown. In this mode the internal transistors
are turned off. The device will power up again, as soon as the temperature falls below +110°C again.
www.austriamicrosystems.com/Power-Management/AS1390
Revision 1.04
14 - 20
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相关代理商/技术参数 |
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| AS1390B-BSOT | 功能描述:IC BOOST CTLR/BUCK CONV 16-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
| AS1390B-BSOT-500 | 制造商:ams 功能描述:IC BOOST CTRL/BUCK CONV 16-SOIC 制造商:ams 功能描述:T&R / SOIC16 |
| AS13920FLF | 制造商:TT Electronics / IRC 功能描述:AS13920FLF |
| AS13920HLF | 制造商:TT Electronics / IRC 功能描述:AS13920HLF |
| AS13920JLF | 制造商:TT Electronics / IRC 功能描述:AS13920JLF |
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