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TPS71257DRCR

更新时间： 2024-11-05 13:14:51
品牌 Logo 应用领域
德州仪器 - TI 转换器开关
页数 文件大小 规格书
28页 537K
描述
250-mA, dual-channel low-dropout voltage regulator with enable 10-VSON -40 to 125

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TPS71257DRCR 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SON
包装说明：HVSON, SOLCC10,.11,20针数：10
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：5.15可调性：FIXED
最大回动电压 1：0.23 V标称回动电压 1：0.125 V
最大回动电压 2：0.23 V最大绝对输入电压：6 V
最大输入电压：5.5 V最小输入电压：2.7 V
JESD-30 代码：S-PDSO-N10JESD-609代码：e4
长度：3 mm湿度敏感等级：2
功能数量：1输出次数：2
端子数量：10工作温度TJ-Max：125 °C
工作温度TJ-Min：-40 °C最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流 1：0.25 A
最大输出电流 2：0.25 A最大输出电压 1：5.4 V
最小输出电压 1：1.2 V标称输出电压 1：2.85 V
最大输出电压 2：2.9355 V最小输出电压 2：2.7645 V
标称输出电压 2：2.85 V封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：SOLCC10,.11,20
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
包装方法：TR峰值回流温度（摄氏度）：260
认证状态：Not Qualified调节器类型：FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR
座面最大高度：1 mm子类别：Other Regulators
表面贴装：YES技术：PMOS
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：NO LEAD
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED最大电压容差：3%
宽度：3 mmBase Number Matches：1

TPS71257DRCR 数据手册

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TPS61130  
TPS61131  
TPS61132  
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www.ti.com  
SLVS431A–JUNE 2002–REVISED AUGUST 2003  
SYNCHRONOUS SEPIC / FLYBACK CONVERTER WITH 1.1A SWITCH  
AND INTEGRATED LDO  
FEATURES  
DESCRIPTION  
•
Synchronous, Up To 90% Efficient, SEPIC  
Converter With 300-mA Output Current From  
2.5-V Input  
The TPS6113x devices provide a complete power  
supply solution for products powered by either a  
one-cell Li-Ion or Li-Polymer or a two up to four-cell  
Alkaline, NiCd or NiMH batteries. The device can gen-  
erate two regulated output voltages that are either  
adjusted by an external resistor divider or fixed  
internally on the chip. It also provides a simple and  
efficient buck-boost solution for generating 3.3 V out of  
a one-cell Li-Ion or Li-Polymer battery at a maximum  
output current of at least 300 mA with supply voltages  
down to 1.8 V. The implemented SEPIC converter is  
based on a fixed frequency, pulse-width-modulation  
(PWM) controller using a synchronous rectifier to ob-  
tain maximum efficiency. The maximum peak current in  
the SEPIC switch is limited to a value of 1600 mA.  
•
Integrated 200-mA Reverse Voltage Protected  
LDO for DC/DC Output Voltage Post Regu-  
lation or Second Output Voltage  
•
•
Dual Input or Dual Output Mode  
Available in a 16 pin QFN 4x4 or in a  
TSSOP-16 Package  
•
40-µA (Typical) Total Device Quiescent Cur-  
rent  
•
•
Input Voltage Range: 1.8-V to 5.5-V  
Adjustable Output Voltage up to 5.5-V, Fixed  
Output Voltage Options  
The converter can be disabled to minimize battery  
drain. During shutdown, the load is completely discon-  
nected from the battery. A low-EMI mode is im-  
plemented to reduce ringing and in effect lower radi-  
ated electromagnetic energy when the converter enters  
the discontinuous conduction mode. A power good  
output at the SEPIC stage provides additional control of  
any connected circuits like cascaded power supply  
stages or microprocessors.  
•
Power Save Mode for Improved Efficiency at  
Low Output Power  
•
•
•
•
High Efficient Li-Ion to 3.3-V Conversion  
Low Battery Comparator  
Power Good Output  
Low EMI-Converter (Integrated Antiringing  
Switch)  
The built-in LDO can be used for a second output  
voltage derived either from the SEPIC output or directly  
from the battery. The output voltage of this LDO can be  
programmed by an external resistor divider or is fixed  
internally on the chip. The LDO can be enabled separ-  
ately i.e., using the power good of the SEPIC stage.  
•
•
Load Disconnect During Shutdown  
Overtemperature Protection  
APPLICATIONS  
•
All Single Cell Li, Dual or Triple Cell Battery or  
USB Powered Products as MP-3 Player, PDAs,  
and Other Portable Equipment  
The device is packaged in a 16-pin QFN 4 x 4 mm  
(16RSA) or in a 16-pin TSSOP (16 PW) package.  
22 mH  
SWN  
VBAT  
LBI  
22 mH  
10 mF  
1.8 V up to 6 V  
Input  
SWP  
10 mF  
V
VOUT  
Out1  
e.g. 3.3 V up to 300 mA  
TPS61130  
100 mF  
FB  
ON  
OFF  
SKIPEN  
EN  
PGOOD  
LBO  
Control  
Outputs  
Control  
OFF  
ON  
ON  
Inputs  
LDOIN  
LDOEN  
V
Out2  
OFF  
LDOOUT  
e.g. 1.5 V up to 300 mA  
2.2 mF  
LDOSENSE  
GND PGND  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily in-  
cludetestingofallparameters.  
Copyright © 2002–2003, Texas Instruments Incorporated  
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TPS71257DRCR 替代型号

型号 品牌 替代类型 描述 数据表
TPS71257DRCT TI

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