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STW41414

更新时间： 2024-11-21 04:01:39
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 转换器电源电路
页数 文件大小 规格书
30页 866K
描述
Single-coil dual-output step-down DC/DC converter for digital base band and multimedia processor supply

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中文翻译

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STW41414 技术参数

是否Rohs认证： 符合生命周期：Transferred
Reach Compliance Code：compliantECCN代码：EAR99
风险等级：5.55Is Samacsys：N
其他特性：ADDITIONAL +1.5V OUTPUT ALSO AVAILABLE模拟集成电路 - 其他类型：DC-DC REGULATED POWER SUPPLY MODULE
控制模式：VOLTAGE-MODE最大输入电压：5.5 V
最小输入电压：2.7 V标称输入电压：3.6 V
JESD-30 代码：R-XXMA-X功能数量：1
输出次数：2端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.4 A最大输出电压：1.854 V
最小输出电压：1.746 V标称输出电压：1.8 V
封装主体材料：UNSPECIFIED封装代码：FBGA
封装等效代码：BGA16,4X4,20封装形状：RECTANGULAR
封装形式：MICROELECTRONIC ASSEMBLY认证状态：Not Qualified
子类别：Switching Regulator or Controllers表面贴装：NO
技术：HYBRID温度等级：INDUSTRIAL
端子形式：UNSPECIFIED端子节距：0.5 mm
端子位置：UNSPECIFIED微调/可调输出：NO
Base Number Matches：1

STW41414 数据手册

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STw4141  
Single-coil dual-output step-down DC/DC converter  
for digital base band and multimedia processor supply  
Features  
Solution size  
7 x 8 mm  
■ Single coil dual output switching converter for  
digital core supply & digital I/Os supply  
– Digital I/O supply:VOUT1 @ 200 mA  
– CPU CORE supply:VOUT2 @ 400 mA  
TFBGA 3x3mm  
16 bumps 0.5 mm pitch  
■ Wide range of fixed output voltage  
configurations available  
Applications  
■ High efficiency synchronous step down  
converter with up to 92 % for the entire device  
■ Mobile phones  
■ Size and cost optimized application board  
(7x8 mm, height 1.2mm) three capacitors and  
only one inductor necessary for both outputs  
■ PDAs and hand held terminals  
■ Portable media players  
■ Digital still camera  
■ 2.7 V to 5.5 V battery input range  
■ WLAN and Bluetooth applications  
■ ±100mV output voltage accuracy full range in  
PWM (Including Line and Load Transients)  
Description  
■ 900 kHz fixed frequency PWM operation  
■ PFM mode operation at light load current  
The STw4141 is a single coil dual output  
synchronous step down DC/DC converter that  
requires only four standard external components.  
It operates at a fixed 900 kHz switching frequency  
in PWM mode. The device can operate in PFM  
mode to maintain high efficiency over the full  
range of output currents.  
■ PWM/PFM switch can be done automatically or  
forced by setting external pins (AUTO and  
MODE/SYNC)  
■ MODE/SYNC input pin for external clock  
synchronization from 600 kHz to 1.5 MHz  
The STw4141 application requires a very small  
PCB area and offers a very efficient, accurate,  
space and cost saving solution to fulfill the  
requirements of digital baseband or multimedia  
processor supply (CORE & I/O).  
■ VSEL input pin for VOUT2/VOUT2(red.) selection  
■ Ultra low shutdown current (Iq<1 µA)  
■ Short circuit and thermal shutdown protections  
Application test circuit  
L
4.7 µH  
VLX1  
VLX2  
A3  
VIN=2.7V to 5.5V  
VOUT1=1.8V  
PVDD  
VDD  
VOUT1  
FB1  
A2  
B1  
A4  
CIN  
10 µF  
6.3 V  
COUT1  
22 µF  
6.3 V  
D1  
D3  
D4  
C2  
C3  
EN  
VOUT2=1.0V/1.2V  
AUTO  
VOUT2  
FB2  
STw4141  
B4  
VSEL  
COUT2  
22 µF  
6.3 V  
D2  
B2  
MODE/SYNC  
STATE  
C1  
A1  
C4  
B3  
T_MODE  
PGND GND  
June 2006  
Rev 2  
1/30  
www.st.com  
1
1234567...30

中文翻译

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