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TPS2140

更新时间： 2024-11-09 22:52:59
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德州仪器 - TI 开关
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25页 360K
描述
ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANAGEMENT

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TPS2140 数据手册

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TPS2140, TPS2141  
TPS2150, TPS2151  
SLVS399 – JANUARY 2002  
ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR  
USB HIGH-POWER PERIPHERAL POWER MANAGEMENT  
FEATURES  
DESCRIPTION  
D
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Complete Power Management Solution for  
USB High-Power Peripherals  
The TPS2140/41/50/51 is a USB 1.0 and 2.0  
Specification-compatible IC containing a dual-current-  
limiting power switch and an adjustable low dropout  
regulator (LDO). Both the switch and LDO limit inrush  
current by controlling the turnon slew rate. The unique  
dual-current-limiting feature of the switch allows USB  
peripherals to utilize high-value capacitance at the  
output of the switch, while keeping the inrush current  
low. During turnon, the switch limits the current  
delivered to the capacitive load to less than 100 mA.  
When the output voltage from the switch reaches about  
93% of the input voltage, the switch power good output  
goes high, and the switch current limit increases to  
800mA (minimum), at which point higher current loads  
can be turned on. The higher current limit provides short  
circuit protection while allowing the peripheral to draw  
maximum current from the USB bus.  
250 mA Low-Dropout Regulator (LDO) With  
Enable and 325 mA (Typ) Current Limit  
LDO Supports 2.7 V to 5.5 V V and 0.9 V to  
IN  
3.3 V Adjustable V  
OUT  
40 mΩ (Typ) High-Side MOSFET With Dual  
Current Limit  
Undervoltage Lockout and Power Good for  
LDO and Switch  
CMOS- and TTL-Compatible Enable Inputs  
85 µA (Typ) Supply Current  
5 µA (Typ) Standby Supply Current  
Available in 14-Pin HTSSOP (PowerPAD )  
–40°C to 85°C Ambient Temperature Range  
Alternative to TPS2148/58 3.3-V LDO With  
3.3-V Switch and 5-V Switch  
The switch and LDO function independently, providing  
flexibility in DSP applications requiring separate core  
and I/O voltages. For example, in a DSP application  
operating from a 3.3-V rail, the LDO can supply the DSP  
core voltage down to 0.9 V, while the switch powers the  
3.3-V (typical) DSP I/O supply. If supply sequencing is  
required, the LDO power good output can be used to  
enable the switch.  
APPLICATIONS  
D
High-Power USB Peripherals  
– ADSL Modems  
– Digital Still and PC Cameras  
– Zip Drives  
– Speakers  
D
DSP Sequencing  
AVAILABLE OPTIONS  
PACKAGED DEVICES  
PACKAGE  
AND PIN  
COUNT  
TARGET  
APPLICATION  
T
A
DESCRIPTION  
ACTIVE LOW  
ACTIVE HIGH  
(SWITCH)  
(SWITCH)  
AdjustableLDOand3.3Vswitchwithdualcurrent  
limit  
DSP  
USB  
HTSSOP-14  
HTSSOP-14  
TPS2140IPWP  
TPS2150IPWP  
TPS2151IPWP  
–40°C to 85°C  
Adjustable LDO and 5 V switch with dual current  
limit  
TPS2141IPWP  
NOTE: All options available taped and reeled. Add an R suffix (e.g., TPS2140IPWPR)  
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.  
PowerPAD is a trademark of Texas Instruments.  
USB is a trademark of Universal Serial Bus Association.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright 2002, Texas Instruments Incorporated  
1
www.ti.com  
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TPS2140 替代型号

型号 品牌 替代类型 描述 数据表
TPS2151 TI

功能相似

 ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANA
TPS2150 TI

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 ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANA
TPS2141 TI

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 ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANA

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 		ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB
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 		Adjustable LDO Plus 3.3V Switch with Dual Current Limit for High Power USB Peripherals 14-
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 		ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANA
TPS2141IPWP TI

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 		ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANA
TPS2141IPWPR TI

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 		ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB
TPS2141IPWPRG4 TI

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 		具有低电平有效和可调节输出的 LDO 的双通道、0.6A 负载、5V、40mΩ USB 电
TPS2145 TI

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 		LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS
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 		LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

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