TPS732 Datasheet, PDF (1/39 Pages) Texas Instruments – 250-mA Low-Dropout Regulator

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TPS732
SBVS037P – AUGUST 2003 – REVISED DECEMBER 2015
TPS732xx Capacitor-Free, NMOS, 250-mA Low-Dropout Regulator With Reverse Current
Protection
1 Features
•1 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 Typical at
250 mA
• Excellent Load Transient Response—With or
Without Optional Output Capacitor
• NMOS Topology Provides Low Reverse Leakage
Current
• Low Noise: 30 μV_RMS Typical (10 kHz to 100 kHz)
• 0.5% Initial Accuracy
• 1% Overall Accuracy (Line, Load, and
Temperature)
• Less Than 1-μA Maximum I_Q in Shutdown Mode
• Thermal Shutdown and Specified Min and Max
Current Limit Protection
• Available in Multiple Output Voltage Versions
– Fixed Outputs of 1.2 V to 5 V
– Adjustable Outputs from 1.2 V to 5.5 V
– Custom Outputs Available
2 Applications
• Portable and Battery-Powered Equipment
• Post-Regulation for Switching Supplies
• Noise-Sensitive Circuitry such as VCOs
• Point-of-Load Regulation for DSPs, FPGAs,
ASICs, and Microprocessors
3 Description
The TPS732 family of low-dropout (LDO) voltage
regulators uses an NMOS pass element in a voltage-
follower configuration. This topology is stable using
output capacitors with low equivalent series
resistance (ESR), and even allows operation without
a capacitor. The device also provides high reverse
blockage (low reverse current) and ground pin current
that is nearly constant over all values of output
current.
The TPS732 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 less than 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOT-23 (5)
2.90 mm × 1.60 mm
TPS732xx
SOT-223 (6)
6.50 mm × 3.50 mm
SON (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit for Fixed-Voltage Versions
Optional
Optional
V_IN
IN
OUT
V_OUT
TPS732xx
EN GND NR
ON
OFF
Optional
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.