TPS22998 [TI]

5.5V、10A、导通电阻为 4mΩ 的负载开关;
TPS22998
型号: TPS22998
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

5.5V、10A、导通电阻为 4mΩ 的负载开关

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文件: 总22页 (文件大小:1650K)
中文:  中文翻译
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TPS22998  
ZHCSMV6A OCTOBER 2021 REVISED DECEMBER 2021  
TPS22998 5.5V10A、导通电阻4mΩ 的负载开关  
1 特性  
3 说明  
• 输入电压范(VIN)0.2 V 5.5V  
• 偏置电压范围2.2 V 5.5V  
• 最大持续电流10A  
• 导通电(RON)4mΩ典型值)  
• 带三态引脚的可调压摆率  
• 快速输出放(QOD)50Ω  
• 热关断  
TPS22998 是一款单通道负载开关具有可配置上升时  
从而可更大限度地降低浪涌电流。此器件包含一个  
可在 0.2V 5.5V 输入电压范围内运行的 N 沟道  
MOSFET并且支10A 的最大连续电流。  
开关可由一个打开和关闭输入 (ON) 控制此输入可与  
低压控制信号 (VIH = 0.9V) 直接连接。TPS22998 在开  
关关闭时具有固定快速输出放电将输出下拉至接地。  
• 低功耗:  
TPS22998 采用 10 引脚 WQFN 封装 (RYZ)1.5mm  
× 2mm间距为 0.5mm并可在自然通风条件下的 –  
40°C +105°C 温度范围运行。  
– 导通状(IQ)15μA典型值)  
– 关闭状(ISD)3μA典型值)  
2 应用  
器件信息  
封装(1)  
固态硬盘  
器件型号  
TPS22998  
封装尺寸标称值)  
PC 和笔记本电脑  
PC  
光学模块  
WQFN (10)  
1.5mm × 2.0mm  
(1) 要了解所有可用封装请参见产品说明书末尾的可订购产品附  
录。  
TPS22998 典型应用  
TPS22998 方框图  
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: SLVSG05  
 
 
 
 
TPS22998  
www.ti.com.cn  
ZHCSMV6A OCTOBER 2021 REVISED DECEMBER 2021  
Table of Contents  
7.2 Functional Block Diagram......................................... 11  
7.3 Feature Description...................................................11  
7.4 Device Functional Modes..........................................12  
8 Application and Implementation..................................13  
8.1 Application Information............................................. 13  
8.2 Typical Application.................................................... 13  
9 Power Supply Recommendations................................15  
10 Layout...........................................................................15  
10.1 Layout Guidelines................................................... 15  
10.2 Layout Example...................................................... 15  
11 Device and Documentation Support..........................16  
11.1 接收文档更新通知................................................... 16  
11.2 支持资源..................................................................16  
11.3 Trademarks............................................................. 16  
11.4 Electrostatic Discharge Caution..............................16  
11.5 术语表..................................................................... 16  
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 (VBIAS = 5 V)..................... 5  
6.6 Electrical Characteristics (VBIAS = 3.3 V).................. 5  
6.7 Electrical Characteristics (VBIAS = 2.2 V).................. 6  
6.8 Switching Characteristics (VBIAS = 2.2 V to 5 V).......7  
6.9 Timing Diagram...........................................................8  
6.10 Typical Characteristics..............................................9  
7 Detailed Description......................................................11  
7.1 Overview................................................................... 11  
Information.................................................................... 17  
4 Revision History  
以前版本的页码可能与当前版本的页码不同  
Changes from Revision * (October 2021) to Revision A (December 2021)  
Page  
• 将数据表状态从“预告信息”更改为“量产数据”.............................................................................................1  
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ZHCSMV6A OCTOBER 2021 REVISED DECEMBER 2021  
5 Pin Configuration and Functions  
5-1. TPS22998 RYZ Package, 10-Pin WQFN (Top View)  
5-1. Pin Functions  
PIN  
I/O(1)  
DESCRIPTION  
NAME  
NO.  
VBIAS  
1
I
I
Device bias supply  
VIN  
GND  
VOUT  
CT  
2, 3, 4  
Switch input  
5
6, 7, 8  
9
G
O
I
Device ground  
Switch output  
Slew rate control can be pulled up, left floating, or tie to ground  
ON  
10  
I
Enable pin  
(1) I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.  
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ZHCSMV6A OCTOBER 2021 REVISED DECEMBER 2021  
6 Specifications  
6.1 Absolute Maximum Ratings  
over operating free-air temperature range (unless otherwise noted)(1)  
MIN  
0.3  
0.3  
0.3  
MAX  
6
UNIT  
VIN  
Input Voltage  
V
V
V
A
VBIAS  
VON, VCT  
IMAX  
Bias Voltage  
6
Control Pin Voltage  
Maximum Current  
6
10  
Internally  
Limited  
TJ  
Junction temperature  
Storage temperature  
°C  
°C  
Tstg  
150  
65  
(1) Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply  
functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions. If  
used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully  
functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime.  
6.2 ESD Ratings  
VALUE  
UNIT  
Human body model (HBM), per ANSI/ESDA/  
JEDEC JS-001(1)  
±2000  
V(ESD)  
Electrostatic discharge  
V
Charged device model (CDM), per ANSI/ESDA/  
JEDEC JS-002(2)  
±1000  
(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  
0.2  
2.2  
0
NOM  
MAX  
5.5  
UNIT  
V
VIN  
Input Voltage  
VBIAS  
VCT  
TA  
Bias Voltage  
5.5  
V
Control Pin Voltage  
Ambient Temperature  
5.5  
V
105  
°C  
40  
6.4 Thermal Information  
TPS22998  
THERMAL METRIC (1)  
RYZ (WQFN)  
10 PINS  
84.1  
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  
77.5  
16.6  
Junction-to-top characterization parameter  
Junction-to-board characterization parameter  
4.0  
YJB  
16.0  
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application  
report.  
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ZHCSMV6A OCTOBER 2021 REVISED DECEMBER 2021  
6.5 Electrical Characteristics (VBIAS = 5 V)  
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.  
PARAMETER  
TEST CONDITIONS  
TA  
MIN  
TYP  
MAX UNIT  
Power Consumption  
25°C  
3
uA  
ISD,VBIA  
5
6
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
VBIAS Shutdown Current  
ON = 0 V  
40°C to 85°C  
40°C to 105°C  
25°C  
S
15  
20  
20  
IQ,VBIAS VBIAS Quiescent Current  
ISD,VIN VIN Shutdown Current  
ON > VIH  
40°C to 85°C  
40°C to 105°C  
25°C  
0.1  
1
2
ON = 0 V  
40°C to 85°C  
40°C to 105°C  
40°C to 105°C  
ION  
ON pin leakage  
ON = VBIAS  
0.1  
4
Performance  
25°C  
mΩ  
mΩ  
mΩ  
V
RON  
On-Resistance  
VIN = 0.2 V to 5 V  
6
7
40°C to 85°C  
40°C to 105°C  
40°C to 105°C  
40°C to 105°C  
VIH  
VIL  
Turn on threshold, rising  
Turn off threshold, falling  
0.765  
0.595  
0.9  
0.7  
1.035  
0.805  
V
VON,  
ON pin hysteresis  
0.2  
V
40°C to 105°C  
40°C to 105°C  
HYST  
tON,DEG  
On pin deglitch time  
2
5
7
us  
LITCH  
25°C  
50  
Ω
Ω
RQOD  
QOD Resistance  
VOUT = VIN  
40  
60  
40°C to 105°C  
Protection  
TSD  
Thermal Shutdown  
-
-
130  
150  
20  
180  
°C  
°C  
TSDHYS Thermal Shutdown Hysteresis  
6.6 Electrical Characteristics (VBIAS = 3.3 V)  
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.  
PARAMETER  
TEST CONDITIONS  
TA  
MIN  
TYP  
MAX UNIT  
Power Consumption  
25°C  
3
uA  
ISD,VBIA  
5
5
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
VBIAS Shutdown Current  
ON = 0 V  
40°C to 85°C  
40°C to 105°C  
25°C  
S
15  
0.1  
0.1  
20  
20  
IQ,VBIAS VBIAS Quiescent Current  
ISD,VIN VIN Shutdown Current  
ON > VIH  
40°C to 85°C  
40°C to 105°C  
25°C  
1
3
1
ON = 0 V  
40°C to 85°C  
40°C to 105°C  
40°C to 105°C  
ION  
ON pin leakage  
ON = VBIAS  
Performance  
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6.6 Electrical Characteristics (VBIAS = 3.3 V) (continued)  
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.  
PARAMETER  
TEST CONDITIONS  
TA  
MIN  
TYP  
MAX UNIT  
25°C  
4
mΩ  
RON  
On-Resistance  
VIN = 0.2 V to 3.3 V  
7
7
40°C to 85°C  
40°C to 105°C  
40°C to 105°C  
40°C to 105°C  
mΩ  
mΩ  
V
VIH  
VIL  
ON pin turn on threshold, rising  
ON pin turn off threshold, falling  
0.765  
0.595  
0.9  
0.7  
1.035  
0.805  
V
VON,  
ON pin hysteresis  
0.2  
V
40°C to 105°C  
40°C to 105°C  
HYST  
tON,DEG  
On pin deglitch time  
2
5
6.5  
us  
LITCH  
25°C  
50  
Ω
Ω
RQOD  
QOD Resistance  
VOUT = VIN  
40  
60  
40°C to 105°C  
Protection  
TSD  
Thermal Shutdown  
-
-
130  
150  
20  
180  
°C  
°C  
TSDHYS Thermal Shutdown Hysteresis  
6.7 Electrical Characteristics (VBIAS = 2.2 V)  
Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.  
PARAMETER  
TEST CONDITIONS  
TA  
MIN  
TYP  
MAX UNIT  
Power Consumption  
25°C  
3
uA  
ISD,VBIA  
5
5
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
uA  
VBIAS Shutdown Current  
ON = 0 V  
40°C to 85°C  
40°C to 105°C  
25°C  
S
15  
20  
20  
IQ,VBIAS VBIAS Quiescent Current  
ISD,VIN VIN Shutdown Current  
ON > VIH  
40°C to 85°C  
40°C to 105°C  
25°C  
0.1  
1
3
1
ON = 0 V  
40°C to 85°C  
40°C to 105°C  
40°C to 105°C  
ION  
ON pin leakage  
ON = VBIAS  
0.1  
4.3  
Performance  
25°C  
mΩ  
mΩ  
mΩ  
V
RON  
On-Resistance  
VIN = 0.2 V to 2.2 V  
7
7
40°C to 85°C  
40°C to 105°C  
40°C to 105°C  
40°C to 105°C  
VIH  
VIL  
ON pin turn on threshold, rising  
ON pin turn off threshold, falling  
0.765  
0.595  
0.9  
0.7  
1.035  
0.805  
V
VON,  
ON pin hysteresis  
0.2  
V
40°C to 105°C  
40°C to 105°C  
HYST  
tON,DEG  
On pin deglitch time  
2
4.5  
50  
6.5  
us  
LITCH  
25°C  
Ω
Ω
RQOD  
QOD Resistance  
VOUT = VIN  
40  
60  
40°C to 105°C  
Protection  
TSD Thermal Shutdown  
-
130  
150  
180  
°C  
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Over operating free-air temperature range (unless otherwise noted). Typical values are at TA = 25°C.  
PARAMETER  
TEST CONDITIONS  
TA  
MIN  
TYP  
MAX UNIT  
TSDHYS Thermal Shutdown Hysteresis  
-
20  
°C  
6.8 Switching Characteristics (VBIAS = 2.2 V to 5 V)  
Over operating free-air temperature range (unless otherwise noted), CIN=47uF. Typical values are at TA = 25°C, CL = 0.1μF,  
and a current load of 1mA.  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
VIN = 5 V  
tON  
Turn ON time  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = Open  
250  
1870  
3728  
225  
1838  
3697  
26  
us  
us  
us  
us  
us  
us  
us  
us  
us  
us  
us  
tON  
Turn ON time  
Turn ON time  
Rise time  
tON  
tRISE  
tRISE  
tRISE  
tD  
Rise time  
Rise time  
Delay time  
Delay time  
Delay time  
Fall time  
tD  
31  
tD  
31  
tFALL  
tOFF  
11  
Turn OFF time  
3
VIN = 3.3 V  
tON  
tON  
tON  
tRISE  
tRISE  
tRISE  
tD  
Turn ON time  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = Open  
175  
1261  
3586  
150  
1232  
2478  
26  
us  
us  
us  
us  
us  
us  
us  
us  
us  
us  
us  
Turn ON time  
Turn ON time  
Rise time  
Rise time  
Rise time  
Delay time  
Delay time  
Delay time  
Fall time  
tD  
29  
tD  
29  
tFALL  
tOFF  
11  
Turn OFF time  
3
VIN = 1.8 V  
tON  
tON  
tON  
tRISE  
tRISE  
tRISE  
tD  
Turn ON time  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = Open  
102  
664  
1302  
75  
us  
us  
us  
us  
us  
us  
us  
us  
us  
us  
us  
Turn ON time  
Turn ON time  
Rise time  
Rise time  
634  
1272  
27  
Rise time  
Delay time  
Delay time  
Delay time  
Fall time  
tD  
29  
tD  
30  
tFALL  
tOFF  
11  
Turn OFF time  
3
VIN = 0.6 V  
tON Turn ON time  
tON Turn ON time  
CT = Open  
CT = VBIAS  
51  
us  
us  
213  
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6.8 Switching Characteristics (VBIAS = 2.2 V to 5 V) (continued)  
Over operating free-air temperature range (unless otherwise noted), CIN=47uF. Typical values are at TA = 25°C, CL = 0.1μF,  
and a current load of 1mA.  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
393  
23  
MAX  
UNIT  
us  
tON  
tRISE  
tRISE  
tRISE  
tD  
Turn ON time  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = Open  
Rise time  
us  
Rise time  
183  
365  
27  
us  
Rise time  
us  
Delay time  
Delay time  
Delay time  
Fall time  
us  
tD  
29  
us  
tD  
29  
us  
tFALL  
tOFF  
10  
us  
Turn OFF time  
4
us  
VIN = 0.285 V  
tON  
tON  
tON  
tRISE  
tRISE  
tRISE  
tD  
Turn ON time  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = VBIAS  
CT = GND  
CT = Open  
CT = Open  
37  
96  
158  
11  
us  
us  
us  
us  
us  
us  
us  
us  
us  
us  
us  
Turn ON time  
Turn ON time  
Rise time  
Rise time  
66  
128  
27  
29  
30  
9
Rise time  
Delay time  
Delay time  
Delay time  
Fall time  
tD  
tD  
tFALL  
tOFF  
Turn OFF time  
4
6.9 Timing Diagram  
6-1. TPS22998 Timing Diagram  
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6.10 Typical Characteristics  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
10  
–40C  
25C  
–40C  
25C  
85C  
85C  
105C  
105C  
2
2.5  
3
3.5  
4
4.5  
5
5.5  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
Bias Voltage (V)  
Input Voltage (V)  
VIN = VBIAS  
VOUT = Open  
VBIAS = 5 V  
VOUT = Open  
6-3. Quiescent Current vs Bias Voltage  
6-2. Quiescent Current vs Input Voltage  
5
4.5  
4
4
3.6  
3.2  
2.8  
2.4  
2
3.5  
3
2.5  
2
1.6  
1.2  
0.8  
0.4  
0
1.5  
1
–40C  
25C  
–40C  
25C  
85C  
105C  
85C  
0.5  
0
105C  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
2
2.5  
3
3.5  
4
4.5  
5
5.5  
Input Voltage (V)  
Bias Voltage (V)  
VBIAS = 5 V  
VOUT = 0 V  
VIN = VBIAS  
VOUT = 0 V  
6-4. VBIAS Shutdown Current vs Input Voltage  
6-5. VBIAS Shutdown Current vs Bias Voltage  
6
60  
58  
56  
54  
52  
50  
48  
46  
44  
42  
40  
–40C  
5.4  
4.8  
4.2  
3.6  
3
25C  
85C  
105C  
2.4  
1.8  
1.2  
0.6  
0
–40C  
25C  
85C  
105C  
2
2.5  
3
3.5  
4
4.5  
5
5.5  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
Bias Voltage (V)  
Input Voltage (V)  
VIN = VBIAS  
6-7. QOD Resistance vs Bias Voltage  
VBIAS = 5 V  
ILOAD = 200 mA  
6-6. On-Resistance vs Input Voltage  
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6.10 Typical Characteristics (continued)  
250  
225  
200  
175  
150  
125  
100  
75  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
–40C  
25C  
–40C  
25C  
85C  
105C  
50  
85C  
25  
105C  
0
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
Input Voltage (V)  
Input Voltage (V)  
VBIAS = 5 V  
CL = 0.1 µF  
CT = Floating  
VBIAS = 5 V  
CL = 0.1 µF  
CT = Floating  
6-8. Rise Time vs Input Voltage  
6-9. Delay Time vs Input Voltage  
275  
250  
225  
200  
175  
150  
125  
100  
75  
14  
13  
12  
11  
10  
9
8
7
6
5
4
3
2
1
–40C  
25C  
–40C  
25C  
85C  
50  
85C  
105C  
105C  
25  
0
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
Input Volage (V)  
Input Voltage (V)  
VBIAS = 5 V  
CL = 0.1 µF  
CT = Floating  
VBIAS = 5 V  
CL = 0.1 µF  
CT = Floating  
6-10. Turn-On Time vs Input Voltage  
6-11. Fall Time vs Input Voltage  
6
5.4  
4.8  
4.2  
3.6  
3
–40C  
25C  
85C  
105C  
2.4  
1.8  
1.2  
0.6  
0
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
Input Voltage (V)  
VBIAS = 5 V  
CL = 0.1 µF  
6-12. Off Time vs Input Voltage  
CT = Floating  
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7 Detailed Description  
7.1 Overview  
The TPS22998 device is a single-channel load switch with a 4-mpower MOSFET designed to operate up to 10  
A. The voltage range is 0.2 V to 5.5 V. A configurable rise time provides flexibility for power sequencing and  
minimizes inrush current for high capacitance loads.  
An enable pin (ON) controls the switch, which is capable of interfacing directly with low voltage GPIO signals.  
The TPS22998 device uses quick output discharge when switch turns off, pulling the output down to 0 V through  
an internal 50-resistor.  
7.2 Functional Block Diagram  
7.3 Feature Description  
7.3.1 ON and OFF Control  
The ON pin controls the state of the switch. The ON pin is compatible with standard GPIO logic threshold so it  
can be used in a wide variety of applications. When the pin pull high, the device enables, and when it is low, the  
device disables.  
7.3.2 Adjustable Slew Rate  
The CT pin is a tri-state pin, meaning that it has three different slew rates depending on the connection to the  
pin. The CT pin can be grounded, pulled high, or left floating. Floating defines as an effective resistance to GND  
or other pins greater than 10 MΩ.  
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7.3.3 Thermal Shutdown  
When the device temperature reaches 150°C (typical), the device shuts itself off to prevent thermal damage.  
After it cools off by about 20°C, the device turns back on. If the device is kept in a thermally stressful  
environment, then the device oscillates between these two states until it can keep its temperature below the  
thermal shutdown point.  
7.4 Device Functional Modes  
The below table summarizes the device functional modes:  
ON  
L
Fault Condition  
VOUT State  
None  
None  
QOD to GND  
H
Connected to VIN  
QOD to GND  
H
Thermal shutdown  
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8 Application and Implementation  
备注  
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 to use the TPS22998 device to limit startup inrush current.  
8-1. TPS22998 Basic Application  
8.2.1 Design Requirements  
For this example, the values below are used as the design parameters.  
8-1. Design Parameters  
PARAMETER  
VBIAS  
VALUE  
3.3 V  
VIN  
1.8 V  
Load capacitance  
470 μF  
Maximum inrush current  
1 A  
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8.2.2 Detailed Design Procedure  
When the switch enables, the charge up the output capacitance from 0 V to the set value (1.8 V in this example).  
This charge arrives in the form of inrush current. Calculate inrush current using 方程1.  
Inrush Current = CL × dVOUT/dt  
(1)  
Where:  
CL is the output capacitance.  
dVOUT is the change in VOUT during the ramp up of the output voltage when device is enabled. Because  
rise time is 10% of VOUT to 90% of VOUT, this is 80% of the VIN value.  
dt is the rise time in VOUT during the ramp up of the output voltage when the device is enabled.  
The TPS22998 offers an adjustable rise time for VOUT, allowing the user to control the inrush current during turn  
on. Calculate the appropriate rise time using the design requirements and the inrush current equation as shown  
below.  
1A = 470 µF × (1.8 V × 80%) / dt  
dt = 677µs  
(2)  
(3)  
To ensure an inrush current of less than 1 A, a CT setting that yields a rise time of more than 677 µs must be  
chosen. By pulling the CT pin high, a rise time of 900 μs is selected, limiting the inrush current to below 1 A.  
8.2.3 Application Performance Plots  
The below scope shot shows the TPS22998 turning on into a 470-μF load with the CT pin tied to VBIAS.  
8-2. TPS22998 Turn-On into 470 μF (CT = VBIAS  
)
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9 Power Supply Recommendations  
The TPS22998 device is designed to operate with a VIN range of 0.2 V to 5.5 V. Regulate the VIN power supply  
well and place as close to the device terminal as possible. The power supply 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 can be required on the  
input.  
10 Layout  
10.1 Layout Guidelines  
For best performance, all traces must be as short as possible. To be most effective, place the input and output  
capacitors close to the device to minimize the effects that parasitic trace inductances can have on normal  
operation. Using wide traces for VIN, VOUT, and GND helps minimize the parasitic electrical effects.  
10.2 Layout Example  
10-1. TPS22998 Layout Example  
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11 Device and Documentation Support  
TI offers an extensive line of development tools. Tools and software to evaluate the performance of the device,  
generate code, and develop solutions are listed below.  
11.1 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。  
11.2 支持资源  
TI E2E支持论坛是工程师的重要参考资料可直接从专家获得快速、经过验证的解答和设计帮助。搜索现有解  
答或提出自己的问题可获得所需的快速设计帮助。  
链接的内容由各个贡献者“按原样”提供。这些内容并不构成 TI 技术规范并且不一定反映 TI 的观点请参阅  
TI 《使用条款》。  
11.3 Trademarks  
TI E2Eis a trademark of Texas Instruments.  
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 术语表  
TI 术语表  
本术语表列出并解释了术语、首字母缩略词和定义。  
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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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PACKAGE OPTION ADDENDUM  
www.ti.com  
24-Feb-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)  
TPS22998RYZR  
ACTIVE  
WQFN-HR  
RYZ  
10  
3000 RoHS & Green  
NIPDAU  
Level-2-260C-1 YEAR  
-40 to 105  
1LF  
(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 OUTLINE  
RYZ0010A  
WQFN-HR - 0.8 mm max height  
SCALE 7.000  
PLASTIC QUAD FLATPACK - NO LEAD  
1.6  
1.4  
B
A
2.1  
1.9  
PIN 1 INDEX AREA  
0.8  
0.7  
C
SEATING PLANE  
0.08 C  
0.05  
0.00  
(0.12)  
TYP  
0.475  
0.275  
6X  
5
0.1  
C A B  
C
0.05  
4
6
SYMM  
2X  
1.5  
0.3  
0.2  
10X  
9
1
6X 0.5  
10  
0.725  
0.525  
4X  
PIN 1 ID  
(45 X 0.1)  
SYMM  
0.1  
C A B  
C
0.05  
4226834/B 06/2021  
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.  
www.ti.com  
EXAMPLE BOARD LAYOUT  
RYZ0010A  
WQFN-HR - 0.8 mm max height  
PLASTIC QUAD FLATPACK - NO LEAD  
SYMM  
10  
4X (0.825)  
6X (0.575)  
9
1
10X (0.25)  
SYMM  
(1.825)  
6X (0.5)  
4
6
(R0.05) TYP  
5
(1.075)  
(1.325)  
LAND PATTERN EXAMPLE  
EXPOSED METAL SHOWN  
SCALE:30X  
0.05 MAX  
ALL AROUND  
0.05 MIN  
ALL AROUND  
SOLDER MASK  
OPENING  
METAL  
EXPOSED  
METAL  
SOLDER MASK  
EXPOSED  
OPENING  
METAL  
METAL  
UNDER  
SOLDER MASK  
NON SOLDER MASK  
DEFINED  
SOLDER MASK  
DEFINED  
(PREFERRED)  
SOLDER MASK DETAILS  
NOT TO SCALE  
4226834/B 06/2021  
NOTES: (continued)  
3. For more information, see Texas Instruments literature number SLUA271 (www.ti.com/lit/slua271).  
www.ti.com  
EXAMPLE STENCIL DESIGN  
RYZ0010A  
WQFN-HR - 0.8 mm max height  
PLASTIC QUAD FLATPACK - NO LEAD  
SYMM  
10  
4X (0.825)  
6X (0.575)  
1
9
10X (0.25)  
SYMM  
(1.825)  
6X (0.5)  
4
6
(R0.05) TYP  
5
(1.075)  
(1.325)  
SOLDER PASTE EXAMPLE  
BASED ON 0.1 mm THICKNESS  
SCALE: 30X  
4226834/B 06/2021  
NOTES: (continued)  
5. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate  
design recommendations.  
www.ti.com  
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