TPS2116DRLR [TI]

1.6V 至 5.5V、40mΩ、2.5A、低 IQ、优先级电源多路复用器 | DRL | 8 | -40 to 125;
TPS2116DRLR
型号: TPS2116DRLR
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

1.6V 至 5.5V、40mΩ、2.5A、低 IQ、优先级电源多路复用器 | DRL | 8 | -40 to 125

复用器
文件: 总26页 (文件大小:2402K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
TPS2116  
ZHCSN31A JANUARY 2021 REVISED MAY 2021  
具有手动和优先级切换功能TPS2116 1.6V 5.5V2.5A IQ 电源多路复用  
1 特性  
3 说明  
• 输入电压范围1.6V 5.5V  
• 最大持续电流2.5A  
• 导通电阻40mΩ典型值)  
VIN2 待机电流50nA典型值)  
• 静态电流1.32uA典型值)  
• 切换模式:  
– 优先级模式  
– 手动模式  
• 受控输出压摆率:  
TPS2116 是一款电源多路复用器具有 1.6V 5.5V  
的额定电压和 2.5A 的最大额定电流。该器件使用 N 沟  
MOSFET 在电源之间切换同时在第一次施加电压  
时提供受控的压摆率。  
凭借 1.32uA典型值的低静态电流和 50nA典型  
的低待机电流TPS2116 适用于其中一个输入由  
电池供电的系统。这些低电流延长了电池的使用寿命和  
续航时间。  
TPS2116 可根据应用配置用于两种不同的切换操作。  
自动优先级模式优先选择连接到 VIN1 电源在  
VIN1 下降时将切换到次级电源 (VIN2)。手动模式允许  
用户切GPIO 或使信号能够在通道之间切换。  
– 电压3.3V 1.3ms典型值)  
VOUT VINx 时实现反向电流阻断  
• 热关断  
2 应用  
器件信息(1)  
• 备用电池系统  
• 电表  
• 电机驱动器  
• 楼宇自动化  
封装尺寸标称值)  
器件型号  
TPS2116  
封装  
SOT (8)  
2.1mm x 1.6mm  
(1) 如需了解所有可用封装请参阅数据表末尾的可订购产品附  
录。  
基本应用  
本文档旨在为方便起见提供有TI 产品中文版本的信息以确认产品的概要。有关适用的官方英文版本的最新信息请访问  
www.ti.com其内容始终优先。TI 不保证翻译的准确性和有效性。在实际设计之前请务必参考最新版本的英文版本。  
English Data Sheet: SLVSFG1  
 
 
 
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ZHCSN31A JANUARY 2021 REVISED MAY 2021  
Table of Contents  
7.4 VINx Collapse Rate...................................................11  
7.5 Output Voltage Drop................................................. 12  
7.6 Device Functional Modes..........................................12  
8 Application and Implementation..................................14  
8.1 Application Information............................................. 14  
8.2 Typical Application.................................................... 14  
9 Power Supply Recommendations................................16  
10 Layout...........................................................................17  
10.1 Layout Guidelines................................................... 17  
10.2 Layout Example...................................................... 17  
11 Device and Documentation Support..........................18  
11.1 Documentation Support.......................................... 18  
11.2 接收文档更新通知................................................... 18  
11.3 Trademarks............................................................. 18  
11.4 Electrostatic Discharge Caution..............................18  
11.5 Glossary..................................................................18  
12 Mechanical, Packaging, and Orderable  
1 特性................................................................................... 1  
2 应用................................................................................... 1  
3 说明................................................................................... 1  
4 Revision History.............................................................. 2  
5 Pin Configuration and Functions...................................3  
6 Specifications.................................................................. 4  
6.1 Absolute Maximum Ratings ....................................... 4  
6.2 ESD Ratings .............................................................. 4  
6.3 Recommended Operating Conditions ........................4  
6.4 Thermal Information ...................................................4  
6.5 Electrical Characteristics ............................................5  
6.6 Switching Characteristics ...........................................7  
6.7 Timing Diagrams ........................................................7  
6.8 Typical Characteristics................................................8  
7 Detailed Description......................................................10  
7.1 Overview...................................................................10  
7.2 Functional Block Diagram.........................................10  
7.3 Feature Description...................................................10  
Information.................................................................... 18  
4 Revision History  
Changes from Revision * (January 2021) to Revision A (May 2021)  
Page  
• 将状态从“预告信息”更改为“量产数据”....................................................................................................... 1  
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5 Pin Configuration and Functions  
5-1. DRL Package 8-Pin SOT Top View  
5-1. Pin Functions  
PIN  
I/O  
DESCRIPTION  
NAME  
GND  
NO.  
1
-
O
I
Device ground.  
VOUT  
VIN1  
2, 7  
3
Output power.  
Channel 1 input power.  
Selects between VIN1 and VIN2. When PR1 is high VIN1 is  
selected, and when PR1 is low VIN2 is selected.  
PR1  
4
5
I
I
Device is put into Priority mode when MODE is tied to VIN1 and  
manual mode when MODE is pulled up to an external voltage.  
MODE  
VIN2  
ST  
6
8
I
Channel 2 input power.  
O
Open drain status pin. Pulled low when VIN1 is not being used.  
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6 Specifications  
6.1 Absolute Maximum Ratings  
over operating free-air temperature range (unless otherwise noted)(1)  
MIN  
0.3  
0.3  
MAX  
UNIT  
V
VIN1, VIN2  
VOUT  
Input Voltage  
6
6
Output Voltage  
V
VST, VPR1  
VMODE  
,
Control Pin Voltage  
Maximum Current  
6
2.5  
4
V
A
A
0.3  
IMAX  
Maximum Pulsed Current  
Max duration 1ms, Duty cycle of 2%  
IMAX,PLS  
Internally  
Limited  
TJ  
Junction temperature  
Storage temperature  
°C  
°C  
Tstg  
150  
65  
(1) Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress ratings  
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under  
Recommended Operating Condition. Exposure to absolute-maximum-rated conditions for extended periods may affect device  
reliability.  
6.2 ESD Ratings  
VALUE  
UNIT  
Human body model (HBM), per ANSI/ESDA/  
JEDEC JS-001, all pins(1)  
±2000  
V(ESD)  
Electrostatic discharge  
V
Charged device model (CDM), per JEDEC  
specification JESD22-C101, all pins(2)  
±500  
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.  
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.  
6.3 Recommended Operating Conditions  
over operating free-air temperature range (unless otherwise noted)  
MIN  
1.6  
0
NOM  
MAX  
5.5  
UNIT  
V
VIN1, VIN2  
VOUT  
VST  
Input Voltage  
Output Voltage  
5.5  
V
,
VMODE  
VPR1  
,
Control Pin Voltage  
0
5.5  
V
TA  
Ambient Temperature  
105  
°C  
40  
6.4 Thermal Information  
TPS2116  
THERMAL METRIC(1)  
DRL (SOT)  
8-PINS  
111.5  
19.4  
UNIT  
RθJA  
RθJC(top)  
RθJB  
ΨJT  
Junction-to-ambient thermal resistance  
Junction-to-case (top) thermal resistance  
Junction-to-board thermal resistance  
°C/W  
°C/W  
°C/W  
°C/W  
°C/W  
35.8  
Junction-to-top characterization parameter  
Junction-to-board characterization parameter  
1.2  
19.1  
ΨJB  
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6.4 Thermal Information (continued)  
TPS2116  
THERMAL METRIC(1)  
DRL (SOT)  
8-PINS  
N/A  
UNIT  
RθJC(bot)  
Junction-to-case (bottom) thermal resistance  
°C/W  
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application  
report.  
6.5 Electrical Characteristics  
Over operating free-air temperature range and operating voltage range of 1.6V to 5.5V (unless otherwise noted). Typical  
specifications are at an input voltage of 3.3V and ambient temperature of 25°C.  
PARAMETER  
TEST CONDITIONS  
TA  
MIN  
TYP  
MAX UNIT  
Power Consumption  
25°C  
1.1  
uA  
VIN2 powers VOUT  
VIN1 > VIN2 + 0.1V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
1.9  
2
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
ISTBY,  
VIN1 Standby Current  
VIN1  
0.22  
1.2  
VIN2 powers VOUT  
VIN2 > VIN1 + 0.2V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
0.31  
0.32  
VIN1 powers VOUT  
VIN2 > VIN1 + 0.2V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
2
2.1  
ISTBY,  
VIN2 Standby Current  
VIN2  
0.05  
1.32  
0.3  
VIN1 powers VOUT  
VIN1 > VIN2 + 0.1V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
0.07  
0.09  
VIN1 powers VOUT  
VIN1 > VIN2 + 0.1V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
3.6  
4.4  
IQ, VIN1 VIN1 Quiescent Current  
IQ, VIN2 VIN2 Quiescent Current  
ISD,VIN1 VIN1 Shutdown Current  
VIN1 powers VOUT  
VIN2 > VIN1 + 0.2V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
0.51  
0.55  
1.35  
0.1  
VIN2 powers VOUT  
VIN2 > VIN1 + 0.2V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
3.7  
4.5  
VIN2 powers VOUT  
VIN1 > VIN2 + 0.1V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
0.27  
0.29  
0.1  
MODE = 0V, PR1 = 5V  
VIN1 > VIN2  
VOUT = 0V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
1.3  
2.9  
0.05  
MODE = 0V, PR1 = 5V  
VIN1 < VIN2  
VOUT = 0V  
-40°C to 85°C  
-40°C to 105°C  
1
2.4  
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6.5 Electrical Characteristics (continued)  
Over operating free-air temperature range and operating voltage range of 1.6V to 5.5V (unless otherwise noted). Typical  
specifications are at an input voltage of 3.3V and ambient temperature of 25°C.  
PARAMETER  
TEST CONDITIONS  
TA  
MIN  
TYP  
MAX UNIT  
25°C  
0.05  
uA  
MODE = 0V, PR1 = 5V  
VIN2 > VIN1  
VOUT = 0V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
1.3  
2.9  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
ISD,VIN2 VIN2 Shutdown Current  
0.05  
MODE = 0V, PR1 = 5V  
VIN2 < VIN1  
VOUT = 0V  
-40°C to 85°C  
-40°C to 105°C  
25°C  
0.7  
2.1  
0.001  
0.05  
0.15  
0.01  
0.1  
Reverse leakage current out of  
VINx  
VOUT = 5.5V  
VINx = 0V, VINy = Open  
85°C  
105°C  
IREV  
25°C  
VOUT = 5.5V  
VINx = 0V, VINy = Open  
Reverse leakage current into VOUT  
85°C  
105°C  
0.25  
IPR1  
IMODE  
IST  
PR1 pin leakage  
MODE pin leakage  
ST pin leakage  
-40°C to 105°C  
-40°C to 105°C  
-40°C to 105°C  
0.1  
0.1  
0.03  
Performance  
25°C  
37  
40  
41  
42  
46  
55  
60  
48  
55  
59  
51  
61  
66  
52  
68  
74  
0.1  
mΩ  
mΩ  
mΩ  
mΩ  
mΩ  
mΩ  
mΩ  
mΩ  
mΩ  
mΩ  
mΩ  
mΩ  
V
VINx = 5V  
IOUT = 200mA  
-40°C to 85°C  
-40°C to 105°C  
25°C  
VINx = 3.3V  
IOUT = 200mA  
-40°C to 85°C  
-40°C to 105°C  
25°C  
RON  
On-Resistance  
VINx = 1.8V  
IOUT = 200mA  
-40°C to 85°C  
-40°C to 105°C  
25°C  
VINx = 1.6V  
IOUT = 200mA  
-40°C to 85°C  
-40°C to 105°C  
-40°C to 105°C  
VOL,ST Status pin VOL  
IST = 1mA  
ST pin pulled high to low  
RST = 10kΩ  
tST  
Status pin response time  
-40°C to 105°C  
-40°C to 105°C  
-40°C to 105°C  
5
1
us  
V
VREF  
PR1 reference voltage  
0.92  
1
1.08  
5.5  
VIH,  
MODE logic high threshold  
V
MODE  
VIL,  
MODE logic low threshold  
-40°C to 105°C  
0
0.35  
V
MODE  
Protection  
Reverse current blocking response  
time  
tRCB  
VOUT > Selected VIN + 1V  
-40°C to 105°C  
-40°C to 105°C  
-40°C to 105°C  
-40°C to 105°C  
2
42  
us  
mV  
mV  
A
Reverse current blocking rising  
threshold (VOUT - VIN)  
VRCB,R  
VRCB,F  
IRCB  
70  
40  
4
Reverse current blocking falling  
threshold (VOUT - VIN)  
17  
Reverse current blocking activation  
current  
1.4  
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6.5 Electrical Characteristics (continued)  
Over operating free-air temperature range and operating voltage range of 1.6V to 5.5V (unless otherwise noted). Typical  
specifications are at an input voltage of 3.3V and ambient temperature of 25°C.  
PARAMETER  
TEST CONDITIONS  
TA  
MIN  
TYP  
170  
20  
MAX UNIT  
TSD  
Thermal shutdown  
-
-
°C  
°C  
TSDHYS Thermal shutdown hysteresis  
6.6 Switching Characteristics  
Typical switching characteristics are defined at an ambient temperature of 25°C  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
Switchover  
tSW  
tSW  
tSW  
tD  
Switchover time, VINx = 5 V  
Switchover time, VINx = 3.3 V  
Switchover time, VINx = 1.8 V  
Delay time, VINx = 5 V  
8
6.2  
17.7  
1
us  
us  
RL = 10 Ω, CL = 10 uF  
RL = 10 Ω, CL = 10 uF  
RL = 10 Ω, CL = 10 uF  
RL = 100 Ω, CL = 10 uF  
RL = 100 Ω, CL = 10 uF  
RL = 100 Ω, CL = 10 uF  
RL = 100 Ω, CL = 10 uF  
RL = 100 Ω, CL = 10 uF  
RL = 100 Ω, CL = 10 uF  
us  
ms  
ms  
ms  
ms  
ms  
ms  
tD  
Delay time, VINx = 3.3 V  
Delay time, VINx = 1.8 V  
Soft-start time, VINx = 5 V  
Soft-start time, VINx = 3.3 V  
Soft-start time, VINx = 1.8 V  
1.2  
1.4  
1.7  
1.3  
0.9  
tD  
tSS  
tSS  
tSS  
6.7 Timing Diagrams  
6-1. TPS2116 Timing Diagram  
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6.8 Typical Characteristics  
1.5  
1.55  
1.5  
-40°C  
-40°C  
25°C  
85°C  
105°C  
25°C  
85°C  
105°C  
1.45  
1.4  
1.45  
1.4  
1.35  
1.3  
1.35  
1.3  
1.25  
1.2  
1.25  
1.2  
1.15  
1.1  
1.15  
1.1  
1.05  
1.5  
2
2.5  
3
VIN1 Voltage (V)  
3.5  
4
4.5  
5
5.5  
1.5  
2
2.5  
3
VIN2 Voltage (V)  
3.5  
4
4.5  
5
5.5  
D001  
D002  
VIN2 = 1.6 V  
VOUT = Open  
VIN1 = 1.6 V  
VOUT = Open  
6-2. VIN1 Quiescent Current vs Input Voltage  
6-3. VIN2 Quiescent Current vs Input Voltage  
1.3  
1.35  
-40°C  
-40°C  
25°C  
85°C  
1.3  
1.25  
1.2  
25°C  
85°C  
105°C  
1.25  
105°C  
1.2  
1.15  
1.1  
1.15  
1.1  
1.05  
1
1.05  
1
0.95  
0.9  
0.95  
0.9  
0.85  
0.85  
1.5  
2
2.5  
3
VIN1 Voltage (V)  
3.5  
4
4.5  
5
5.5  
1.5  
2
2.5  
3
VIN2 Voltage (V)  
3.5  
4
4.5  
5
5.5  
D003  
D004  
VIN2 = 1.6 V  
VOUT = Open  
VIN1 = 1.6 V  
VOUT = Open  
6-4. VIN1 Standby Current vs Input Voltage  
6-5. VIN2 Standby Current vs Input Voltage  
0.36  
0.4  
-40°C  
25°C  
85°C  
-40°C  
25°C  
85°C  
105°C  
0.3  
0.33  
0.35  
0.3  
105°C  
0.27  
0.24  
0.21  
0.18  
0.15  
0.12  
0.09  
0.06  
0.25  
0.2  
0.15  
0.1  
0.05  
1.5  
2
2.5  
3
VIN1 Voltage (V)  
3.5  
4
4.5  
5
5.5  
1.5  
2
2.5  
3
VIN2 Voltage (V)  
3.5  
4
4.5  
5
5.5  
D005  
D006  
VIN2 = 1.6 V  
VOUT = Open  
VIN1 = 1.6 V  
VOUT = 0 V  
6-6. VIN1 Shutdown Current vs Input Voltage  
6-7. VIN2 Shutdown Current vs Input Voltage  
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6.8 Typical Characteristics (continued)  
60  
60  
56  
52  
48  
44  
40  
36  
32  
28  
24  
20  
-40°C  
25°C  
85°C  
105°C  
-40°C  
25°C  
85°C  
105°C  
56  
52  
48  
44  
40  
36  
32  
28  
24  
20  
1.5  
2
2.5  
3
VIN1 Voltage (V)  
3.5  
4
4.5  
5
5.5  
1.5  
2
2.5  
3
VIN2 Voltage (V)  
3.5  
4
4.5  
5
5.5  
D007  
D008  
IOUT = 200 mA  
IOUT = 200 mA  
6-8. Channel 1 On-Resistance vs Input Voltage  
6-9. Channel 2 On-Resistance vs Input Voltage  
240  
160  
-40°C  
-40°C  
25°C  
85°C  
105°C  
25°C  
85°C  
105°C  
210  
180  
150  
120  
90  
140  
120  
100  
80  
60  
60  
40  
30  
20  
0
0
1.5  
2
2.5  
3
VOUT Voltage (V)  
3.5  
4
4.5  
5
5.5  
1.5  
2
2.5  
3
VOUT Voltage (V)  
3.5  
4
4.5  
5
5.5  
D009  
D010  
VINx = 0 V  
VINy = Open  
VINx = 0 V  
VINy = Open  
6-10. Reverse Leakage Current into VOUT  
6-11. Reverse Leakage Current out of VINx  
6-13. Manual Mode Switchover Behavior (MODE = 5 V, RL =  
10 Ω, CL = 10 uF)  
6-12. Output Voltage Drop vs Output Capacitance (MODE = 5  
V, RL = 10 Ω)  
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7 Detailed Description  
7.1 Overview  
The TPS2116 is a power mux device with a voltage rating of 1.6 V to 5.5 V and a maximum current rating of 2.5  
A. The device uses N-channel MOSFETs to switch between supplies while providing a controlled slew rate when  
voltage is first applied.  
The TPS2116 can be configured for two different switchover behaviors depending on the application. Automatic  
priority mode prioritizes the supply connected to VIN1 and switches over to the secondary supply (VIN2) when  
VIN1 drops. Manual mode allows the user to toggle a GPIO or enable signal to switch between channels.  
Due to its low quiescent of 1.32 uA (typical) and standby current of 50 nA (typical), the TPS2116 is ideal for  
systems where a battery is connected to one of the inputs. These low currents extend the life and operation of  
the battery when in use.  
7.2 Functional Block Diagram  
7.3 Feature Description  
The below sections detail the features of the TPS2116.  
7.3.1 Truth Table  
The below table shows the expected behavior of the TPS2116. For Priority mode, VIN1 is connected to PR1  
through a resistor divider.  
MODE  
VIN1  
VIN2  
PR1  
ST  
VOUT  
High  
X
High  
VIN1  
(VPR1 > VREF  
)
)
VIN1  
VIN1 through resistor  
divider  
(Priority mode)  
Low  
(VPR1 < VREF  
Low  
VIN2  
1.6 V  
X
1.6 V  
X
High  
Low  
High  
High  
Low  
Low  
VIN1  
VIN2  
Hi-Z  
1.6 V  
External Bias 1 V  
(Manual mode)  
X
X
External Bias 0.35  
V (Manual mode)  
> VIN2  
X
X
Low  
Low  
High  
Low  
VIN1  
VIN2  
> VIN1  
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X = do not care  
7.3.2 Soft Start  
When an input voltage is applied to the TPS2116 and the output voltage is lower than 1 V, the output will be  
brought up with soft start to minimize the inrush current due to output capacitance. However, when the device  
switches from one power supply to another (switchover) and VOUT > 1 V, soft start is not used to minimize the  
output voltage drop. For linear soft start behavior, it is recommended to have an output capacitance of at least  
0.1 µF.  
7.3.3 Status Indication  
The ST pin is an open drain output that should be pulled up to an external voltage for proper operation. When  
the TPS2116 is powering the output using VIN1, the ST pin will be pulled high by the external voltage source.  
Even if the device is blocking reverse current from VOUT to VIN1, selection of VIN1 will keep the ST pin pulled  
high. When the TPS2116 is powering the output using VIN2 or both channels are disabled, the ST pin will be  
pulled low. During thermal shutdown, the ST pin will be pulled low regardless of the channel being used.  
7.3.4 Reverse Current Blocking  
The TPS2116 initiates reverse current blocking (RCB) when the VOUT voltage is externally biased and exceeds  
the input voltage supply being used. Once the output voltage is higher than the input voltage by 42mV (VRCB,R),  
the device will shut off. During this state, the leakage into VOUT and out of VIN is defined by IREV. Once the  
voltage difference between the output and input lowers to 17mV (VRCB,F), the channel will turn back on.  
7-1. Reverse Current Blocking Behavior  
If RCB is expected to occur, it is recommended to clamp the output or use a high output capacitance (about  
100µF). This will prevent voltage spikes from damaging the device due to output inductance.  
7.4 VINx Collapse Rate  
The TPS2116 uses the highest voltage supply to power the device. When one supply drops below the other, the  
device changes the supply used to power the device. If the supply powering the device drops at a rate faster  
than 1 V/10 μs, the other supply must be at 2.5 V or higher to prevent the device from resetting. If the other  
supply is lower than 2.5 V, then the device may not be able to switch to the supply quickly enough, and the  
device will reset and turn on with soft start timing if VOUT < 1 V.  
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7.5 Output Voltage Drop  
The output voltage drop during switchover from one supply to another is based on the load capacitance and load  
resistance. The stronger the resistive load, the faster the output will discharge. The higher the capacitance on  
the output, the less the voltage will drop during switchover.  
7.6 Device Functional Modes  
The below sections detail the two different configuraiton options for the device.  
7.6.1 Priority/Manual Mode  
When MODE is tied high, PR1 determines the channel selected. To configure VIN1 as the priority supply,  
connect MODE to VIN1 and set the proper threshold through a resistor divider from VIN1 to PR1. To configure  
manual selection, pull up MODE to an external supply and follow the truth table. When PR1 is pulled above  
VREF, the voltage on VIN1 is used to power the output, and when it is pulled below VREF, VIN2 is used to power  
the output. The expected behavior for the device is shown in the waveform below.  
7-2. Priority/Manual Mode Switching  
When PR1 is toggled, the device implements a break-before-make switchover which shuts off both channels  
before turning on the new channel to power the output. This means that for time tSW, the output is unpowered  
and will dip depending on the load current and output capacitance. If the output voltage is greater than the input  
supply being switched to, then the device will not turn on the new channel until the output has discharged down  
to VIN + VRCB to prevent reverse current flow.  
When MODE is pulled low and PR1 is pulled high, the device enters shutdown. Both channels are turned off and  
the output is high impedance. When the PR1 pin is pulled low, the higher voltage supply between VIN1 and VIN2  
is passed to the output.  
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7.6.1.1 Priority Switching  
In the case where VIN1 takes priority over VIN2, a resistor divider can be used to set the switchover voltage  
threshold. When VIN1 is first applied, PR1 is brought high and VOUT is powered by that input. As VIN1 begins  
to drop, the voltage on PR1 is lowered until it crosses the VREF threshold. At this point, the device switches over  
to VIN2.  
7.6.1.2 Manual Switching  
For applications where a GPIO pin is used to select which input passes to the output, the GPIO pin can be  
directly connected to the PR1 pin when MODE is tied high (1V). When the GPIO is pulled high, VIN1 is used,  
and when the GPIO pin is pulled low, VIN2 is used.  
Manual mode can also disable both channels by pulling the MODE pin low and keeping PR1 high. In this state,  
the output of the device is high impedance and the leakage on each input is the shutdown current, ISD,VINx  
.
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8 Application and Implementation  
Note  
Information in the following applications sections is not part of the TI component specification, and TI  
does not warrant its accuracy or completeness. TIs customers are responsible for determining  
suitability of components for their purposes, as well as validating and testing their design  
implementation to confirm system functionality.  
8.1 Application Information  
This section highlights some of the design considerations when implementing this device in various applications.  
8.2 Typical Application  
This typical application demonstrates how the TPS2116 device can be used to control inrush current for high  
output capacitances.  
8-1. TPS2116 Typical Application Diagram  
8.2.1 Design Requirements  
For this example, the values below are used as the design parameters.  
8-1. Design Parameters  
PARAMETER  
VALUE  
VIN1 Input Voltage  
5 V  
Mode  
Priority  
100 µF  
500 mA  
Output Capacitance  
Maximum Inrush Current  
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8.2.2 Detailed Design Procedure  
To determine how much inrush current is caused by the output capacitor, use the equation below.  
IINRUSH = COUT × VOUT / tSS  
(1)  
where  
IINRUSH = amount of inrush current caused by COUT  
COUT = capacitance on VOUT  
tSS = output voltage soft start time  
VOUT = final value of the output voltage  
With a final output voltage of 5 V, the expected rise time is 1.7 ms. Using the inrush current equation, the inrush  
current caused by a 100-µF capacitance would be 294 mA, well below the 500-mA target.  
8.2.3 Application Curves  
The below oscilloscope capture shows 5 V being applied to VIN1. The output comes up with slew rate control  
and limits the inrush current to below 500 mA.  
8-2. TPS2116 Inrush Current Control  
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9 Power Supply Recommendations  
The device is designed to operate with a VIN range of 1.6 V to 5.5 V. The VIN power supplies must be well  
regulated and placed as close to the device terminals as possible. The power supplies must be able to withstand  
all transient load current steps. In most situations, using an input capacitance (CIN) of 1 μF is sufficient to  
prevent the supply voltage from dipping when the switch is turned on. In cases where the power supply is slow to  
respond to a large transient current or large load current step, additional bulk capacitance may be required on  
the input.  
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10 Layout  
10.1 Layout Guidelines  
For best performance, all traces must be as short as possible. To be most effective, the input and output  
capacitors must be placed close to the device to minimize the effects that parasitic trace inductances may have  
on normal operation. Using wide traces for VIN1, VIN2, VOUT, and GND helps minimize the parasitic electrical  
effects.  
10.2 Layout Example  
10-1. TPS2116 Layout Example  
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11 Device and Documentation Support  
11.1 Documentation Support  
11.1.1 Related Documentation  
For related documentation see the following:  
Basics of Power MUX  
11 Ways to Protect Your Power Path  
11.2 接收文档更新通知  
要接收文档更新通知请导航至 ti.com 上的器件产品文件夹。点击订阅更新 进行注册即可每周接收产品信息更  
改摘要。有关更改的详细信息请查看任何已修订文档中包含的修订历史记录。  
11.3 Trademarks  
所有商标均为其各自所有者的财产。  
11.4 Electrostatic Discharge Caution  
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled  
with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.  
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may  
be more susceptible to damage because very small parametric changes could cause the device not to meet its published  
specifications.  
11.5 Glossary  
TI Glossary  
This glossary lists and explains terms, acronyms, and definitions.  
12 Mechanical, Packaging, and Orderable Information  
The following pages include mechanical, packaging, and orderable information. This information is the most  
current data available for the designated devices. This data is subject to change without notice and revision of  
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.  
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有瑕疵且不做出任何明示或暗示的担保包括但不限于对适销性、某特定用途方面的适用性或不侵犯任何第三方知识产权的暗示担保。  
这些资源可供使TI 产品进行设计的熟练开发人员使用。您将自行承担以下全部责任(1) 针对您的应用选择合适TI 产品(2) 设计、验  
证并测试您的应用(3) 确保您的应用满足相应标准以及任何其他安全、安保或其他要求。这些资源如有变更恕不另行通知。TI 授权您仅可  
将这些资源用于研发本资源所述TI 产品的应用。严禁对这些资源进行其他复制或展示。您无权使用任何其TI 知识产权或任何第三方知  
识产权。您应全额赔偿因在这些资源的使用中TI 及其代表造成的任何索赔、损害、成本、损失和债务TI 对此概不负责。  
TI 提供的产品TI 的销售条(https:www.ti.com/legal/termsofsale.html) ti.com 上其他适用条款/TI 产品随附的其他适用条款的约束。TI  
提供这些资源并不会扩展或以其他方式更TI TI 产品发布的适用的担保或担保免责声明。重要声明  
邮寄地址Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2021德州仪(TI) 公司  
PACKAGE OPTION ADDENDUM  
www.ti.com  
11-Jan-2022  
PACKAGING INFORMATION  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan  
Lead finish/  
Ball material  
MSL Peak Temp  
Op Temp (°C)  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4/5)  
(6)  
TPS2116DRLR  
ACTIVE  
SOT-5X3  
DRL  
8
4000 RoHS & Green  
Call TI | SN  
Level-1-260C-UNLIM  
-40 to 125  
2116  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance  
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may  
reference these types of products as "Pb-Free".  
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.  
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based  
flame retardants must also meet the <=1000ppm threshold requirement.  
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.  
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation  
of the previous line and the two combined represent the entire Device Marking for that device.  
(6)  
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two  
lines if the finish value exceeds the maximum column width.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
18-Jul-2021  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
TPS2116DRLR  
SOT-5X3  
DRL  
8
4000  
180.0  
8.4  
2.75  
1.9  
0.8  
4.0  
8.0  
Q3  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
18-Jul-2021  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SOT-5X3 DRL  
SPQ  
Length (mm) Width (mm) Height (mm)  
210.0 185.0 35.0  
TPS2116DRLR  
8
4000  
Pack Materials-Page 2  
PACKAGE OUTLINE  
DRL0008A  
SOT-5X3 - 0.6 mm max height  
S
C
A
L
E
8
.
0
0
0
PLASTIC SMALL OUTLINE  
1.3  
1.1  
B
A
PIN 1  
ID AREA  
1
8
6X 0.5  
2.2  
2.0  
2X 1.5  
NOTE 3  
5
4
0.27  
0.17  
8X  
1.7  
1.5  
0.05  
0.00  
0.1  
C A B  
0.05  
C
0.6 MAX  
SEATING PLANE  
0.05 C  
0.18  
0.08  
SYMM  
0.4  
0.2  
8X  
SYMM  
4224486/E 12/2021  
NOTES:  
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing  
per ASME Y14.5M.  
2. This drawing is subject to change without notice.  
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, interlead flash, protrusions, or gate burrs shall not  
exceed 0.15 mm per side.  
4.Reference JEDEC Registration MO-293, Variation UDAD  
www.ti.com  
EXAMPLE BOARD LAYOUT  
DRL0008A  
SOT-5X3 - 0.6 mm max height  
PLASTIC SMALL OUTLINE  
8X (0.67)  
SYMM  
8
8X (0.3)  
1
SYMM  
6X (0.5)  
5
4
(R0.05) TYP  
(1.48)  
LAND PATTERN EXAMPLE  
EXPOSED METAL SHOWN  
SCALE:30X  
0.05 MIN  
AROUND  
0.05 MAX  
AROUND  
EXPOSED  
METAL  
EXPOSED  
METAL  
SOLDER MASK  
OPENING  
METAL UNDER  
SOLDER MASK  
METAL  
SOLDER MASK  
OPENING  
NON SOLDER MASK  
DEFINED  
SOLDER MASK  
DEFINED  
(PREFERRED)  
SOLDERMASK DETAILS  
4224486/E 12/2021  
NOTES: (continued)  
5. Publication IPC-7351 may have alternate designs.  
6. Solder mask tolerances between and around signal pads can vary based on board fabrication site.  
7. Land pattern design aligns to IPC-610, Bottom Termination Component (BTC) solder joint inspection criteria.  
www.ti.com  
EXAMPLE STENCIL DESIGN  
DRL0008A  
SOT-5X3 - 0.6 mm max height  
PLASTIC SMALL OUTLINE  
8X (0.67)  
SYMM  
8
8X (0.3)  
1
SYMM  
6X (0.5)  
5
4
(R0.05) TYP  
(1.48)  
SOLDER PASTE EXAMPLE  
BASED ON 0.1 mm THICK STENCIL  
SCALE:30X  
4224486/E 12/2021  
NOTES: (continued)  
8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate  
design recommendations.  
9. Board assembly site may have different recommendations for stencil design.  
www.ti.com  
重要声明和免责声明  
TI“按原样提供技术和可靠性数据(包括数据表)、设计资源(包括参考设计)、应用或其他设计建议、网络工具、安全信息和其他资源,  
不保证没有瑕疵且不做出任何明示或暗示的担保,包括但不限于对适销性、某特定用途方面的适用性或不侵犯任何第三方知识产权的暗示担  
保。  
这些资源可供使用 TI 产品进行设计的熟练开发人员使用。您将自行承担以下全部责任:(1) 针对您的应用选择合适的 TI 产品,(2) 设计、验  
证并测试您的应用,(3) 确保您的应用满足相应标准以及任何其他功能安全、信息安全、监管或其他要求。  
这些资源如有变更,恕不另行通知。TI 授权您仅可将这些资源用于研发本资源所述的 TI 产品的应用。严禁对这些资源进行其他复制或展示。  
您无权使用任何其他 TI 知识产权或任何第三方知识产权。您应全额赔偿因在这些资源的使用中对 TI 及其代表造成的任何索赔、损害、成  
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TI 提供的产品受 TI 的销售条款ti.com 上其他适用条款/TI 产品随附的其他适用条款的约束。TI 提供这些资源并不会扩展或以其他方式更改  
TI 针对 TI 产品发布的适用的担保或担保免责声明。  
TI 反对并拒绝您可能提出的任何其他或不同的条款。IMPORTANT NOTICE  
邮寄地址:Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2022,德州仪器 (TI) 公司  

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TPS2140IPWPG4

0.9 V-3.3V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5V DROPOUT, PDSO14, GREEN, PLASTIC, HTSSOP-14
TI