TPS73218-Q1 Datasheet, PDF (1/21 Pages) Texas Instruments – Cap-Free, NMOS, 250mA Low-Dropout Regulator with Reverse Current Protection

TPS73218-Q1
www.ti.com
SBVS229A – JUNE 2013 – REVISED AUGUST 2013
Cap-Free, NMOS, 250mA Low-Dropout Regulator
with Reverse Current Protection
Check for Samples: TPS73218-Q1
FEATURES
1
•2 Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following
Results:
– Device Temperature Grade 1: –40°C to
125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C4B
• Stable with No Output Capacitor or Any Value
or Type of Capacitor
• Input Voltage Range: 1.7 V to 5.5 V
• Ultralow Dropout Voltage: 40 mV Typ at 250
mA
• Excellent Load Transient Response—with or
without Optional Output Capacitor
• New NMOS Topology Provides Low Reverse
Leakage Current
• Low Noise: 30 μV_RMS Typ (10 kHz to 100 kHz)
• 0.5% Initial Accuracy
• 1% Overall Accuracy (Line, Load, and
Temperature)
• Less Than 1μA Max I_Q in Shutdown Mode
• Thermal Shutdown and Specified Min/Max
Current Limit Protection
Optional
Optional
V_IN
IN
OUT
V_OUT
TPS732xx-Q1
EN GND NR
ON
OFF
Optional
Typical Application Circuit for Fixed-Voltage Versions
• Available in Multiple Output Voltage Versions
– Fixed Outputs of 1.20 V to 5 V
– Custom Outputs Available
APPLICATIONS
• Post-Regulation for Switching Supplies
• Noise-Sensitive Circuitry such as VCOs
DESCRIPTION
The TPS732xx-Q1 family of low-dropout (LDO)
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.
The TPS732xx-Q1 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
μA and ideal for portable applications. The extremely
low output noise (30 μV_RMS with 0.1-μF C_NR) is ideal
for powering VCOs. These devices are protected by
thermal shutdown and foldback current limit.
SPACER
DRB PA CKAG E
3mmx 3mm SON
(TOP VIEW)
OUT 1
N/C 2
NR 3
GND 4
8 IN
7 N/C
6 N/C
5 EN
DBV PACKAGE
SOT23
(TOP VIEW)
IN
GND
EN
1
5
2
3
4
OUT
NR
DCQ PACKAGE
SOT223
(TOP VIEW)
6 TAB IS GND
1 2345
IN GND EN
OUT NR
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
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 © 2013, Texas Instruments Incorporated