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A5973D PDF预览

A5973D

更新时间: 2024-02-20 05:17:36
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
13页 827K
描述
2.5A switch step down switching regulator for automotive applications

A5973D 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

A5973D 数据手册

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A5973D  
2.5A switch 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  
2A DC output current  
HSOP8 exposed pad  
Operating input voltage from 4V to 36V  
3.3V / ( 2%) reference voltage  
Output voltage adjustable from 1.235V to 35V  
Low dropout operation: 100% duty cycle  
250kHz Internally fixed frequency  
Voltage feedforward  
Description  
The A5973D is a step down monolithic power  
switching regulator with a minimum switch current  
limit of 2.5A so it is able to deliver more than 2A  
DC current to the load depending on the  
application conditions. The output voltage can be  
set from 1.235V to 35V. The high current level is  
also achieved thanks to an SO8 package with  
exposed frame, that allows to reduce the  
Zero load current operation  
Internal current limiting  
R
down to approximately 40°C/W. The  
th(JA)  
Inhibit for zero current consumption  
Synchronization  
device uses an internal P-channel D-MOS  
transistor (with a typical Rdson of 250m) as  
switching element to minimize the size of the  
external components. An internal oscillator fixes  
the switching frequency at 250kHz. Having a  
minimum input voltage of 4V only, it is particularly  
suitable for 5V 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 modulation offers an effective constant  
current short circuit protection.  
Protection against feedback disconnection  
Thermal shutdown  
Applications  
Dedicated to automotive applications  
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  
A5973D  
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  
October 2007  
Rev 2  
1/14  
www.st.com  
1

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