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A5970AD PDF预览

A5970AD

更新时间: 2024-02-28 15:31:21
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
17页 363K
描述
Up to 1 A switch step down switching regulator for automotive applications

A5970AD 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:SOP, SOP8,.25
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.69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:4.4 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:85 °C
最低工作温度:-40 °C最大输出电流:1.5 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1.75 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 mmBase Number Matches:1

A5970AD 数据手册

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A5970AD  
Up to 1 A 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  
1 A DC output current  
SO-8  
Operating input voltage from 4.4 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 A5970AD is a step down monolithic power  
switching regulator with a switch current limit of  
1.35 A so it is able to deliver more than 1 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 device uses an internal P-channel  
Zero load current operation  
Internal current limiting  
D-MOS transistor (with a typical R  
of  
DS(on)  
250 m) as switching element to avoid the use of  
bootstrap capacitor and guarantee high efficiency.  
Inhibit for zero current consumption  
Synchronization  
An internal oscillator fixes the switching frequency  
at 500 kHz to minimize the size of external  
components. Having a minimum input voltage of  
4.4 V only, it is particularly suitable for 5 V bus,  
available in all computer related applications.  
Protection against feedback disconnection  
Thermal shutdown  
Applications  
Pulse by pulse current limit with the internal  
frequency modulation offers an effective constant  
current short circuit protection.  
Dedicated to automotive applications  
Figure 1.  
Application schematic  
L1 15uH  
Vout=3.3V  
VIN=4.4V to 35V  
OUT  
1
VCC  
8
4
SYNCH  
COMP  
2
5
R1  
D1  
C4  
A5970AD  
5k6  
STPS340U  
C1  
10uF  
22nF  
C2  
100uF  
10V  
FB  
6
7
3
35V  
C3  
VREF  
3.3V  
R3  
CERAMIC  
R2  
INH  
GND  
220pF  
4k7  
3k3  
May 2008  
Rev 1  
1/16  
www.st.com  
1

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