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L5970ADTR PDF预览

L5970ADTR

更新时间: 2024-11-25 21:53:51
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器开关
页数 文件大小 规格书
11页 137K
描述
1.5A SWITCH STEP DOWN SWITCHING REGULATOR

L5970ADTR 技术参数

是否Rohs认证: 不符合生命周期:Active
零件包装代码:SOIC包装说明:SO-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:10 weeks风险等级:1.05
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH 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 V
JESD-30 代码:R-PDSO-G8JESD-609代码:e4
长度:4.9 mm湿度敏感等级:1
功能数量:1端子数量:8
最大输出电流:1.8 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.75 mm
表面贴装:YES切换器配置:BUCK
最大切换频率:500 kHz端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)
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:30
宽度:3.9 mmBase Number Matches:1

L5970ADTR 数据手册

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L5970AD  
1.5A SWITCH STEP DOWN SWITCHING REGULATOR  
1 General Features  
Figure 1. Package  
1.5A INTERNAL SWITCH  
OPERATING INPUT VOLTAGE FROM 4.4V TO 36V  
3.3V / ( 2%) REFERENCE VOLTAGE  
OUTPUT VOLTAGE ADJUSTABLE FROM  
1.235V TO 35V  
SO-8  
LOW DROPOUT OPERATION: 100% DUTY  
CYCLE  
Table 1. Order Codes  
Part Number  
L5970AD  
Package  
SO-8  
500KHz INTERNALLY FIXED FREQUENCY  
VOLTAGE FEEDFORWARD  
ZERO LOAD CURRENT OPERATION  
INTERNAL CURRENT LIMITING  
INHIBIT FOR ZERO CURRENT  
CONSUMPTION  
SYNCHRONIZATION  
PROTECTION AGAINST FEEDBACK  
DISCONNECTION  
L5970ADTR  
SO-8 in Tape & Reel  
2 Description  
The L5970AD is a step down monolithic power  
switching regulator with a switch current limit of 1.5A  
so it is able to deliver more than 1A DC current to the  
load depending on the application conditions.  
The output voltage can be set from 1.235V to 35V.  
The device uses an internal P-Channel D-MOS tran-  
THERMAL SHUTDOWN  
1.1 APPLICATIONS:  
CONSUMER: STB, DVD, TV, VCR,CAR  
RADIO, LCD MONITORS  
NETWORKING: XDSL, MODEMS,DC-DC  
MODULES  
COMPUTER: PRINTERS, AUDIO/GRAPHIC  
CARDS, OPTICAL STORAGE, HARD DISK  
DRIVE  
sistor (with a typical R  
element to avoid the use of bootstrap capacitor and  
guarantee high efficiency.  
of 200m) as switching  
DSON  
An internal oscillator fixes the switching frequency at  
500KHz to minimize the size of external components.  
Having a minimum input voltage of 4.4V only, it is  
particularly suitable for 5V bus, available in all com-  
puter related applications.  
Pulse by pulse current limit with the internal frequen-  
cy modulation offers an effective constant current  
short circuit protection.  
INDUSTRIAL: CHARGERS, CAR BATTERY  
DC-DC CONVERTERS  
Figure 2. Test and Application Circuit  
VREF  
L1 15µH  
3.3V  
VOUT=3.3V  
6
OUT  
FB  
1
5
VIN = 4.4V to 35V  
VCC  
D1  
8
2
R1  
5.6K  
L5970AD  
STPS2L25U  
SYNC.  
COMP  
C2  
330µF  
10V  
3
7
C1  
10µF  
35V  
4
C4  
22nF  
INH  
GND  
R2  
CERAMIC  
3.3K  
C3  
220pF  
R3  
4.7K  
D05IN1530  
Rev. 1  
1/11  
March 2005  

L5970ADTR 替代型号

型号 品牌 替代类型 描述 数据表
L5970AD STMICROELECTRONICS

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