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A5973ADTR PDF预览

A5973ADTR

更新时间: 2024-02-26 14:20:10
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
19页 1108K
描述
Up to 1.5 A step down switching regulator for automotive applications

A5973ADTR 技术参数

是否Rohs认证: 符合生命周期:Active
零件包装代码:SOIC包装说明:HLSOP, SOP8,.25
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:11 weeks风险等级:2.31
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE FREQUENCY MODULATION最大输入电压:36 V
最小输入电压:4 V标称输入电压:12 V
JESD-30 代码:R-PDSO-G8长度:4.9 mm
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:3.5 A封装主体材料:PLASTIC/EPOXY
封装代码:HLSOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:1.7 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK
最大切换频率:280 kHz技术:DMOS
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.9 mm
Base Number Matches:1

A5973ADTR 数据手册

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A5973AD  
Up to 1.5 A step down switching regulator  
for automotive applications  
Features  
Qualified following the AEC-Q100  
requirements (temperature grade 3),  
see PPAP for more details  
Temperature range -40 °C to 85 °C  
1.5 A DC output current  
HSOP8 exposed pad  
Operating input voltage from 4 V to 36 V  
3.3 V / ( 2 %) reference voltage  
Output voltage adjustable from 1.235 V to 35 V  
Low dropout operation: 100 % duty cycle  
500 kHz Internally fixed frequency  
Voltage feedforward  
Description  
The A5973AD is a step down monolithic power  
switching regulator with a minimum switch current  
limit of 1.8 A so it is able to deliver more than  
1.5 A DC current to the load depending on the  
application conditions. The output voltage can be  
set from 1.235 V to 35 V. The high current level is  
also achieved thanks to an HSOP8 package with  
exposed frame, that allows to reduce the R  
down to approximately 40 °C/W. The device uses  
an internal P-channel D-MOS transistor (with a  
Zero load current operation  
th(JA)  
Internal current limiting  
Inhibit for zero current consumption  
Synchronization  
typical R  
of 250 m) as switching element  
DS(on)  
to minimize the size of the external components.  
An internal oscillator fixes the switching frequency  
at 500 kHz. Having a minimum input voltage of  
4 V only, it is particularly suitable for 5 V bus.  
Pulse by pulse current limit with the internal  
frequency modulation offers an effective constant  
current short circuit protection. Pulse by pulse  
current limit with the internal frequency  
Protection against feedback disconnection  
Thermal shutdown  
Applications  
Dedicated to automotive applications  
modulation offers an effective constant current  
short circuit protection.  
Figure 1.  
Typical application  
L1 15uH  
Vout=3.3V  
VIN=4V to 35V  
OUT  
1
VCC  
8
4
SYNCH  
COMP  
2
5
R1  
D1  
C4  
A5973AD  
5k6  
STPS340U  
C1  
10uF  
22nF  
C2  
330uF  
6.3V  
FB  
6
7
3
35V  
C3  
VREF  
3.3V  
R3  
CERAMIC  
R2  
INH  
GND  
220pF  
4k7  
3k3  
May 2008  
Rev 4  
1/17  
www.st.com  
19  
 

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