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TPS62202DBVTG4 PDF预览

TPS62202DBVTG4

更新时间: 2024-02-12 02:11:42
品牌 Logo 应用领域
德州仪器 - TI 转换器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功效DC-DC转换器
页数 文件大小 规格书
24页 905K
描述
HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER

TPS62202DBVTG4 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:SOT-23
包装说明:LSSOP,针数:5
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.19
Is Samacsys:N其他特性:PFM MODE ALSO AVAILABLE
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:6 V
最小输入电压:2.5 V标称输入电压:3.6 V
JESD-30 代码:R-PDSO-G5JESD-609代码:e4
长度:2.9 mm湿度敏感等级:1
功能数量:1端子数量:5
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:0.67 A最大输出电压:1.8 V
最小输出电压:1.8 V封装主体材料:PLASTIC/EPOXY
封装代码:LSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.45 mm
表面贴装:YES切换器配置:BUCK
最大切换频率:1500 kHz温度等级:INDUSTRIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:0.95 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:1.6 mm
Base Number Matches:1

TPS62202DBVTG4 数据手册

 浏览型号TPS62202DBVTG4的Datasheet PDF文件第1页浏览型号TPS62202DBVTG4的Datasheet PDF文件第2页浏览型号TPS62202DBVTG4的Datasheet PDF文件第4页浏览型号TPS62202DBVTG4的Datasheet PDF文件第5页浏览型号TPS62202DBVTG4的Datasheet PDF文件第6页浏览型号TPS62202DBVTG4的Datasheet PDF文件第7页 
TPS62200, TPS62201  
TPS62202, TPS62203, TPS62207  
TPS62204, TPS62205, TPS62208  
www.ti.com  
SLVS417EMARCH 2002REVISED MAY 2006  
FUNCTIONAL BLOCK DIAGRAM  
V
I
Current Limit Comparator  
+
_
Undervoltage  
Lockout  
Bias Supply  
REF  
+
_
Skip Comparator  
REF  
Soft Start  
V
V
1 MHz  
Oscillator  
(COMP)  
I
P-Channel  
Power MOSFET  
Comparator  
S
R
Driver  
Shoot-Through  
Logic  
SW  
+
_
Control  
Logic  
Sawtooth  
Generator  
N-Channel  
Power MOSFET  
Comparator High  
Comparator Low  
Comparator Low 2  
Load Comparator  
+
_
Comparator High  
+
_
R1  
Compensation  
Gm  
R2  
Comparator Low  
Comparator Low 2  
See Note  
+
_
V
REF  
= 0.5 V  
EN  
FB  
GND  
For the adjustable version (TPS62200) the internal feedback divider is disabled and the FB pin is directly connected  
to the internal GM amplifier  
DETAILED DESCRIPTION  
OPERATION  
The TPS6220x is a synchronous step-down converter operating with typically 1-MHz fixed frequency pulse width  
modulation (PWM) at moderate to heavy load currents and in power save mode operating with pulse frequency  
modulation (PFM) at light load currents.  
During PWM operation the converter uses a unique fast response, voltage mode, controller scheme with input  
voltage feed forward. This achieves good line and load regulation and allows the use of small ceramic input and  
output capacitors. At the beginning of each clock cycle initiated by the clock signal (S), the P-channel MOSFET  
switch is turned on, and the inductor current ramps up until the comparator trips and the control logic turns off  
the switch. The current limit comparator also turns off the switch in case the current limit of the P-channel switch  
is exceeded. Then the N-channel rectifier switch is turned on and the inductor current ramps down. The next  
cycle is initiated by the clock signal again turning off the N-channel rectifier and turning on the P-channel switch.  
3
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