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B5973D PDF预览

B5973D

更新时间: 2024-01-31 12:14:19
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
12页 782K
描述
2 A step down switching regulator for automotive applications

B5973D 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:ROHS COMPLIANT, HSOP-8
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.75Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
最大输入电压:36 V最小输入电压:4 V
标称输入电压:12 VJESD-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:125 °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
温度等级:AUTOMOTIVE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

B5973D 数据手册

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B5973D  
2 A step down switching regulator  
for automotive applications  
Features  
Qualified following the AEC-Q100  
requirements (temperature Grade 1), see  
PPAP for more details.  
Temperature range -40 °C to +125 °C  
2 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  
250 kHz internally fixed frequency  
Voltage feedforward  
Description  
The B5973D is a step down monolithic power  
switching regulator with a minimum switch current  
limit of 2.25 A so it is able to deliver up to 2 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 SO8 package with exposed  
frame, that allows to reduce the R  
approximately 40 °C/W. The device uses an  
internal P-channel DMOS transistor (with a typical  
Zero load current operation  
down to  
th(JA)  
Internal current limiting  
Inhibit for zero current consumption  
Synchronization  
R
of 250 m) as switching element to  
DSon  
minimize the size of the external components. An  
internal oscillator fixes the switching frequency at  
250 kHz. Having a minimum input voltage of 4V  
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 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  
B
5973D  
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  
January 2008  
Rev 2  
1/11  
www.st.com  
1

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