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A8591KEJTR-J

更新时间： 2024-09-23 14:47:31
品牌 Logo 应用领域
急速微 - ALLEGRO /
页数 文件大小 规格书
33页 2093K
描述
Switching Regulator,

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中文翻译

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A8591KEJTR-J 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.75
湿度敏感等级：1峰值回流温度（摄氏度）：NOT SPECIFIED
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

A8591KEJTR-J 数据手册

 浏览型号A8591KEJTR-J的Datasheet PDF文件第2页浏览型号A8591KEJTR-J的Datasheet PDF文件第3页浏览型号A8591KEJTR-J的Datasheet PDF文件第4页浏览型号A8591KEJTR-J的Datasheet PDF文件第5页浏览型号A8591KEJTR-J的Datasheet PDF文件第6页浏览型号A8591KEJTR-J的Datasheet PDF文件第7页 
A8591  
Wide Input Voltage, 2 A Buck  
Regulator Family with Low-IQ Mode  
FEATURES AND BENEFITS  
• Automotive AEC-Q100 qualified  
DESCRIPTION  
TheA8591isdesignedtoprovidethepowersupplyrequirements  
• Withstands surge input to 40 VIN for load dump  
of next generation car audio and infotainment systems.  
• Operates down to 3.4 VIN (typ), 3.6 VIN (max) for idle stop  
• Utilizes pulse-frequency modulation (PFM) for low-IQ mode  
• 10 μA Sleep mode (automatic PWM / Low-IQ PFM  
mode selection)  
• Fixed output voltage options: 3.3 or 5 V with ±1%  
accuracy  
• Delivers up to 2 A of output current  
• Integrated 110 mΩ high-side MOSFET  
• Adjustable switching frequency from 300 kHz to 2.4 MHz  
• EMI reduction features:  
The A8591 provides all the control and protection circuitry  
to produce a high-current regulator with ±1% output voltage  
accuracy.  
The A8591 employs current-mode control to provide simple  
compensation, excellent stability, and fast transient response.  
The A8591 employs pulse-frequency modulation (PFM) to  
draw less than 33 µA from 12 VIN while supplying 5 V/40 µA  
(A8591, 5 VOUT), or less than 24 μA from 12 VIN while  
supplying3.3V/40μA(A8591-1,3.3VOUT).Whenoperational,  
theA8591 operates down to at least 3.6 VIN (VIN falling). The  
Sleep feature allows for very low standby current.  
□ Frequency dithering  
□ Controlled switching node  
• External synchronization capability  
• Maximum duty cycle for low dropout  
• Active low NPOR output with 7.5 ms delay  
• Pre-bias startup capable: VOUT increases monotonically,  
will not cause a reset  
Features of the A8591 include a programmable PWM  
switching frequency. The regulator switching frequency can  
be synchronized to an external clock. The A8591 has external  
compensation to optimize stability and transient response for  
a wide range of external components and applications. The  
A8591 has a fixed soft-start time of 5 ms.  
Continued on the next page…  
Continued on the next page…  
PACKAGE:  
APPLICATIONS:  
10-Pin, 3 × 3 mm Wettable Flank DFN  
with Exposed Thermal Pad (suffix EJ)  
• Automotive:  
□ Instrument clusters  
□ Audio systems  
□ Navigation  
• Home audio  
• Network and telecom  
• Industrial  
□ HVAC  
Not to scale  
LO  
VOUT  
1
2
8
VIN  
9
VIN  
SW  
CBOOT  
47 nF  
D1  
2 A/40 V  
CIN  
CO  
VIN  
A8591  
10  
5
BOOT  
VOUT  
GND  
3
EN/SLEEP  
RPU  
SYNC  
RFSET  
4
7
FSET /SYNCPWM  
COMP  
NPOR  
6
NPOR  
CP  
RZ  
See Table 2 for recommended component values  
CZ  
Typical Application Diagram  
A8591-DS  
 
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中文翻译

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