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SC1534CMT

更新时间： 2024-09-17 19:28:39
品牌 Logo 应用领域
商升特 - SEMTECH 输出元件调节器
页数 文件大小 规格书
7页 91K
描述
Fixed Positive LDO Regulator, 3.3V, PSSO5, TO-263, 5 PIN

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中文翻译

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SC1534CMT 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：D2PAK
包装说明：TO-263,针数：4
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.55
最大输入电压：5 V最小输入电压：4.35 V
JESD-30 代码：R-PSSO-G5JESD-609代码：e0
长度：9.97 mm功能数量：1
端子数量：5工作温度TJ-Max：125 °C
工作温度TJ-Min：-5 °C最大输出电流 1：0.4 A
最大输出电压 1：3.366 V最小输出电压 1：3.234 V
标称输出电压 1：3.3 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-263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调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：4.8 mm表面贴装：YES
端子面层：TIN LEAD端子形式：GULL WING
端子节距：1.7 mm端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：8.955 mm
Base Number Matches：1

SC1534CMT 数据手册

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400mA SmartLDOTM  
SC1534  
PRELIMINARY - August 27, 1999  
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com  
DESCRIPTION  
FEATURES  
•
•
•
•
•
•
•
Glitch-free transition between input sources  
Internal logic selects input source  
Gate drive for external PMOS bypass switch  
5V detector with hysteresis  
1% regulated output voltage accuracy  
400mA load current capability  
The SC1534 is designed to maintain a glitch-free 3.3V  
output when at least one of two inputs, 5V (VIN) and  
3.3V (VAUX), is present.  
Whenever VIN exceeds a predetermined threshold  
value, the internal 3.3V linear regulator is enabled, and  
DR is pulled high.  
SO-8 and TO-263 packages  
APPLICATIONS  
When VIN falls below a lower threshold value, DR is  
pulled low and the internal linear regulator is turned off.  
DR has been designed to drive the gate of an external  
low threshold P-channel MOSFET, which can be used  
to connect the 3.3V supply directly to the regulator out-  
put. This ensures an uninterrupted 3.3V output even if  
VIN falls out of specification. A maximum RDS(ON) of  
200mΩ is recommended.  
•
•
•
•
•
Desktop Computers  
Network Interface Cards (NICs)  
PCMCIA/PCI Interface Cards  
CardbusTM Technology  
Power supplies with multiple input sources  
ORDERING INFORMATION  
Part Number(1)  
Package  
TO-263-5L  
SO-8  
When both supplies are simultaneously available, the  
drive pin (DR) will be pulled High, turning off the exter-  
nal PMOS switch.  
SC1534CM  
SC1534CS  
Note:  
The internal 5V detector has its upper threshold (for  
VIN rising) set to 4.22V (typical) while the lower thresh-  
old (for VIN falling) is at 4.05V (typical) giving a hys-  
teresis of approximately 170mV.  
(1) Add suffix ‘TR’ for tape and reel packaging.  
ABSOLUTE MAXIMUM RATINGS  
Parameter  
Symbol Maximum Units  
The SC1534 is available in the popular SO-8 and 5-  
lead TO-263 surface mount packages.  
Input Supply Voltage  
VIN  
-0.5 to +7  
-0.5 to +7  
400  
V
V
Auxiliary Supply Voltage VAUX  
BLOCK DIAGRAM  
LDO Output Current  
IO  
mA  
°C  
Operating Ambient  
Temperature Range  
TA  
-5 to +70  
Operating Junction  
Temperature Range  
TJ  
-5 to +125  
°C  
Storage Temperature  
Range  
TSTG  
TLEAD  
-65 to +150 °C  
Lead Temperature  
(Soldering) 10 Sec  
300  
°C  
Thermal Impedance  
Junction to Ambient  
SO-8(1)  
θJA  
PIN CONFIGURATION  
65  
60  
°C/W  
TO-263  
Top View  
Thermal Impedance  
Junction to Case  
SO-8  
θJ C  
39  
3
°C/W  
kV  
TO-263  
ESD Rating  
ESD  
2
SO-8  
TO-263-5L  
Note:  
(1) 1 inch square of 1/16” FR-4, double sided, 1 oz. mini-  
mum copper weight.  
1
© 1999 SEMTECH CORP.  
652 MITCHELL ROAD NEWBURY PARK CA 91320  
1234567

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