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UCC29422PW PDF预览

UCC29422PW

更新时间： 2024-09-18 22:52:43
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理
页数 文件大小 规格书
35页 602K
描述
Multimode High Frequency PWM Controller

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中文翻译

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UCC29422PW 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：TSSOP
包装说明：TSSOP, TSSOP20,.25针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.22
Is Samacsys：N其他特性：CONFIGURABLE VOLTAGE MODE; PROGRAMMABLE PFM TECHNIQUE
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：8 V
最小输入电压：1.8 V标称输入电压：3 V
JESD-30 代码：R-PDSO-G20长度：6.5 mm
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.00065 A封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP20,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.2 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：SINGLE
最大切换频率：2000 kHz技术：BICMOS
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

UCC29422PW 数据手册

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SLUS246C − OCTOBER 1999 − REVISED FEBRUARY 2005  
D
Operation Down to an Input  
Voltage of 1.8 V  
simplified schematic block diagram and  
application circuit  
D
D
High Efficiency Boost, SEPIC or  
Flyback (Buck-Boost) Topologies  
1.8 V(MIN)  
+
+
Drives External FETs for  
High-Current Applications  
VPUMP  
VIN  
2 CELL  
ALKALINE/  
NiCd OR  
1 LI−ION  
7
9
1.24 V  
VREF  
D
Up to 2-MHz Oscillator  
CP  
8
3
D
Synchronizable Fixed Frequency  
Operation  
SYNC/SD  
RT  
CHARGE  
PUMP  
13  
14  
VOUT  
PWM  
OSC  
D
D
High-Efficiency Low-Power Mode  
RSEN  
RECT  
2
VOUT  
VPUMP  
High-Efficiency at Very Low-Power  
with Programmable Variable  
Frequency Mode  
4
RSEL  
ANTI−  
CROSS  
COND.  
19  
6
D
D
D
D
D
D
Pulse-by-Pulse Current Limit  
VGD  
CHRG  
5-µA Supply Current in Shutdown  
150-µA Supply Current in Sleep  
Mode  
PWM CIRCUITRY  
CURRENT LIMIT  
ISENSE  
PGND  
12  
5
+
X10  
Selectable NMOS or PMOS  
Rectification  
50 mV TYP  
LOW POWER  
MODE  
1.24 V  
ERROR  
AMP  
Built-In Power-On Reset  
(UCC39422 Only)  
SLOPE  
+
COMPENSATION  
FB  
17  
18  
16  
PFM MODE  
CONTROL  
Built-In Low-Voltage Detect  
(UCC39422 Only)  
COMP  
PFM  
GND  
15  
+
description  
1.22V  
The UCC39421 family of synchronous  
RESET  
UCC39422  
ONLY  
1
PWM controllers is optimized to operate  
from dual alkaline/NiCd cells or a single  
Lithium-Ion (Li-Ion) cell, and convert to  
adjustable output voltages from 2.5 V to  
8 V. For applications where the input  
voltage does not exceed the output, a  
standard boost configuration is used.  
200 mS  
RESET/  
POR  
+
1.18 V  
RSADJ  
VDET  
LOWBAT  
20  
11  
10  
+
1.24 V  
UDG−98122  
For other applications where the input voltage can swing above and below the output, a 1:1 coupled inductor  
(Flyback or SEPIC) is used in place of the single inductor. Fixed frequency operation can be programmed, or  
synchronized to an external clock source. In applications where (at light loads) variable frequency mode is  
acceptable, the IC can be programmed to automatically enter PFM (pulse frequency modulation) mode for an  
additional efficiency benefit.  
Synchronous rectification provides excellent efficiency at high power levels, where N- or P- type MOSFETs can  
be used. At lower power levels (between 10% and 20% of full load) where fixed frequency operation is required,  
low power mode is entered. This mode optimizes efficiency by cutting back on the gate drive of the charging  
FET. At very low power levels, the IC enters a variable frequency mode (PFM). PFM can be disabled by the user.  
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.  
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Copyright 2000, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...35

中文翻译

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