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UCC29411PW

更新时间： 2024-11-09 23:39:03
品牌 Logo 应用领域
其他 - ETC 开关光电二极管控制器
页数 文件大小 规格书
13页 214K
描述
Current/Voltage-Mode SMPS Controller

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中文翻译

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UCC29411PW 数据手册

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SLUS245D – MARCH 2000 – REVISED NOVEMBER 2000  
PW PACKAGE  
(TOP VIEW)  
D
1-V Input Voltage Operation Start-Up  
Ensured Under Full Load on Main Output,  
and Operation Down to 0.5 V  
1
2
3
4
8
7
6
5
VIN  
VGD  
VOUT  
SW  
D
D
200-mW Output Power at Battery Voltages  
as Low as 0.8 V  
SD/FB  
RESB  
CT  
GND  
Secondary 7-V Supply from a Single  
Inductor  
D
Output Fully Disconnected in Shutdown  
D OR N PACKAGE  
(TOP VIEW)  
D
Adaptive Current Mode Control for  
Optimum Efficiency  
VOUT  
VGD  
SW  
1
2
3
4
8
7
6
5
GND  
CT  
D
D
D
High Efficiency Over Wide Operating Range  
VIN  
6-µA Shutdown Supply Current  
SD/FB  
RESB  
Output Reset Function with Programmable  
Reset Period  
description  
The UCCx9411 family of low-input voltage, single-inductor-boost converters is optimized to operate from a  
single or dual alkaline cell, and steps up to a 3.3-V, 5-V, or adjustable output at 200 mW. The UCCx9411 family  
also provides an auxiliary 7-V output, primarily for the gate-drive supply, which can be used for applications  
requiring an auxiliary output, such as 5 V, by linear regulating. The primary output starts up under full load at  
input voltages typically as low as 0.8 V with a ensured max of 1 V, and operates down to 0.5 V once the converter  
is operating, thereby maximizing battery usage.  
simplified block diagram and application circuit  
+
µ
H
22  
F
µ
100  
SW  
1 V TO 3.5 V  
VIN  
1
6
VGD  
3.3 V 200 mW  
VOUT  
8
1.2  
Ω
7
F
µ
100  
F
µ
100  
START–UP  
CIRCUITRY  
Ω
0.5  
MODULATOR CONTROL CIRCUIT  
R
RES  
SYNCHRONOUS RECTIFICATION CIRCUITRY  
ANTI–CROSS CONDUCTION  
START–UP  
MULTIPLEXING LOGIC  
MAX INPUT POWER CONTROL  
ADAPTIVE CURRENT CONTROL  
RESB  
3
RESET CONTROL CIRCUIT  
GLITCH SUPRESSION  
SD/FB  
2
CT  
PROGRAMMABLE TIMING  
4
5
C
T
GND  
NOTE A: Pinout shown is for the TSSOP Package. Consult Package Descriptions for the DIP and SOIC configurations.  
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.  
Copyright 2000, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...13

中文翻译

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