參數(shù)資料
型號(hào): TPS731XX
廠商: Texas Instruments, Inc.
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
中文描述: 無電容,NMOS管,150mA的低壓差穩(wěn)壓器的反向電流保護(hù)
文件頁數(shù): 1/18頁
文件大?。?/td> 291K
代理商: TPS731XX
www.ti.com
FEATURES
Stable with No Output Capacitor or Any Value
or Type of Capacitor
Input Voltage Range of 1.7V to 5.5V
Ultralow Dropout Voltage: 30mV Typ
Excellent Load Transient Response—with or
without Optional Output Capacitor
New NMOS Topology Provides Low Reverse
Leakage Current
Low Noise: 30
μ
V
RMS
Typ (10kHz to 100kHz)
0.5% Initial Accuracy
1% Overall Accuracy over Line, Load, and
Temperature
Less Than 1
μ
A Max I
Q
in Shutdown Mode
Thermal Shutdown and Specified Min/Max
Current Limit Protection
Available in Multiple Output Voltage Versions
– Fixed Outputs of 1.20V to 5.0V
– Adjustable Outputs from 1.20V to 5.5V
– Custom Outputs Available
DESCRIPTION
The TPS731xx family of low-dropout (LDO) linear
voltage regulators uses a new topology: an NMOS
pass element in a voltage-follower configuration. This
topology is stable using output capacitors with low
ESR, and even allows operation without a capacitor.
It also provides high reverse blockage (low reverse
current) and ground pin current that is nearly
constant over all values of output current.
APPLICATIONS
Portable/Battery-Powered Equipment
Post-Regulation for Switching Supplies
Noise-Sensitive Circuitry such as VCOs
Point of Load Regulation for DSPs, FPGAs,
ASICs, and Microprocessors
GND
EN
NR
IN
OUT
V
IN
V
OUT
Optional
Optional
Optional
Typical Application Circuit for Fixed-Voltage Versions
DBV PACKAGE
SOT23
(TOP VIEW)
IN
GND
EN
NR/FB
OUT
1
2
3
4
5
TPS731xx
TPS731xx
SBVS034H–SEPTEMBER 2003–REVISED OCTOBER 2006
Cap-Free, NMOS, 150mA Low Dropout Regulator
with Reverse Current Protection
The TPS731xx uses an advanced BiCMOS process
to yield high precision while delivering very low
dropout voltages and low ground pin current. Current
consumption, when not enabled, is under 1
μ
A and
ideal for portable applications. The extremely low
output noise (30
μ
V
RMS
with 0.1
μ
F C
NR
) is ideal for
powering VCOs. These devices are protected by
thermal shutdown and foldback current limit.
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.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 2003–2006, Texas Instruments Incorporated
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