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参数资料
| 型号： | TPS22949DRGR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, DSO8 |
| 封装： | 3 X 3 MM, SON-8 |
| 文件页数： | 1/22页 |
| 文件大小： | 688K |
| 代理商： | TPS22949DRGR |
1
FEATURES
APPLICATIONS
DESCRIPTION
www.ti.com ......................................................................................................................................... SLVS908A – FEBRUARY 2009 – REVISED FEBRUARY 2009
CURRENT-LIMITED LOAD SWITCH WITH LOW NOISE REGULATION CAPABILITY
Fingerprint Module Protection
Integrated Current Limiter
Portable Consumer Electronics
–
Input Voltage Range: 1.62 V to 4.5 V
Smartphone
–
Low ON-Resistance
Notebooks
–
rON = 300-m at VIN = 4.5 V
Control Access Systems
–
rON = 350-m at VIN = 3.3 V
–
rON = 400-m at VIN = 2.5 V
–
rON = 600-m at VIN = 1.8 V
The TPS22949 is a device that provides protection to
–
Integrated 100-mA Minimum Current Limit
systems and loads in high-current conditions. The
–
Under-Voltage Lockout
device contains a 500-m
current-limited P-channel
MOSFET that can operate over an input voltage
–
Fast-Current Limit Response Time
range of 1.62 V to 4.5 V as well as a low-dropout
–
Integrated Fault Blanking and Auto Restart
(LDO) regulator with a fixed output voltage of 1.8 V.
Integrated Low-Noise RF LDO
The switch is controlled by an on/off input (EN1),
–
Input Voltage Range: 1.62 V to 4.5 V
which
is
capable
of
interfacing
directly
with
–
Low Noise: 50
Vrms (10 Hz to 100 kHz)
low-voltage control signals. When the switch current
reaches the maximum limit, the TPS22949 operates
–
80-dB VIN PSRR (10 Hz to 10 kHz)
in a constant-current mode to prohibit excessive
–
Fast Start-Up Time: 130
s
currents from causing damage. If the constant current
–
Low Dropout 100 mV at Iload =100 mA
condition still persists after 12 ms, these parts will
shut off the switch and pull the fault signal pin (OC)
–
Integrated Output Discharge
low. The TPS22949 has an auto-restart feature which
–
Stable With 2.2-
F Output Capacitor
will turn the switch on again after 70 ms if the EN1
1.8-V Compatible Control Input Threshold
pin is still active.
ESD Performance Tested Per JESD 22
The
output
of
the
current
limiter
is
internally
–
3500-V Human-Body Model
connected to a RF low-dropout (LDO) regulator which
(A114-B, Class II)
offers good AC performance with very low ground
current, good power-supply rejection ratio (PSRR),
–
1000-V Charged-Device Model
low noise, fast start-up, and excellent line and load
(C101)
transient response. The output of the regulator is
Tiny 8-Terminal YZP Package (1.9 mm ×
stable with ceramic capacitors. This LDO uses a
0.9mm, 0.5 mm Pitch, 0.5 mm Height) and
precision voltage reference and feedback loop to
SON-8 (DRG 3.0 mm × 3.0 mm)
achieve overall accuracy of 2% over all load, line,
process, and temperature variations.
The
TPS22949
is
available
in
a
space-saving
8-terminal WCSP (YZP) or in a 8-pin SON package
(DRG). The device is characterized for operation over
the free-air temperature range of –40°C to 85°C.
ORDERING INFORMATION
TA
PACKAGE(1)(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
SON – DRG
Tape and reel
TPS22949DRGR
YVT (PREVIEW)
–40°C to 85°C
WCSP – YZP
Tape and reel
TPS22949YZPR
_ _ _4Y_
(1)
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2)
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
1
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.
PRODUCTION DATA information is current as of publication date.
Copyright 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS22949YZPR | 功能描述:电源开关 IC - 配电 Crnt Ltd Load Sw w/ Low Noise Reg Cap RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| TPS22951YFPR | 功能描述:电源开关 IC - 配电 Crnt-Ltd,Pwr-Dist Switch RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| TPS22953DQCR | 功能描述:IC LOAD SWITCH CURR LIMT 10WSON 制造商:texas instruments 系列:- 包装:剪切带（CT） 零件状态:在售 开关类型:通用 输出数:1 比率 - 输入:输出:1:1 输出配置:高端 输出类型:N 通道 接口:开/关 电压 - 负载:2.5 V ~ 5.7 V 电压 - 电源（Vcc/Vdd）:不需要 电流 - 输出（最大值）:5A 导通电阻（典型值）:14 毫欧 输入类型:非反相 特性:自动重启，电源良好，压摆率受控型 故障保护:超温，反向电流，UVLO 工作温度:-40°C ~ 105°C（TA） 封装/外壳:10-WFDFN 裸露焊盘 供应商器件封装:10-WSON（3x2） 标准包装:1 |
| TPS22953EVM | 功能描述:TPS22953 - Power Management, Power Distribution Switch (Load Switch) Evaluation Board 制造商:texas instruments 系列:- 零件状态:有效 主要用途:电源管理，配电开关（负载开关） 嵌入式:否 使用的 IC/零件:TPS22953 主要属性:1 通道（单路） 辅助属性:- 所含物品:板 标准包装:1 |
| TPS22954DQCR | 功能描述:IC LOAD SWITCH CURR LIMIT 10WSON 制造商:texas instruments 系列:* 零件状态:在售 标准包装:1 |
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