SLVS241C – MARCH 2000 – REVISED OCTOBER 2007
TPS751xxQ with Power Good Output, TPS753xxQ with RESET Output
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
•23 1.5-A Low-Dropout Voltage Regulator
• Available in 1.5 V, 1.8 V, 2.5 V, and 3.3 V Fixed
Output and Adjustable Versions
• Open Drain Power-Good (PG) Status Output
• Open Drain Power-On Reset With 100ms Delay
• Dropout Voltage Typically 160 mV at 1.5 A
• Ultralow 75-μA Typical Quiescent Current
• Fast Transient Response
• 2% Tolerance Over Specified Conditions for
• 20-Pin TSSOP PowerPAD™ (PWP) Package
• Thermal Shutdown Protection
• DSP, FPGA Supplies
The TPS753xxQ and TPS751xxQ devices are
low-dropout regulators with integrated power-on reset
and power-good (PG) functions respectively. These
devices are capable of supplying 1.5 A of output
current with a dropout of 160 mV (TPS75133Q,
TPS75333Q). Quiescent current is 75 μA at full load
and drops down to 1 μA when the device is disabled.
These devices are designed to have fast transient
response for larger load current changes.
Because the PMOS device behaves as a low-value
resistor, the dropout voltage is very low (typically
160 mV at an output current of 1.5 A for the
TPS75x33Q) and is directly proportional to the output
current. Additionally, because the PMOS pass
element is a voltage-driven device, the quiescent
current is very low and independent of output loading
(typically 75 μA over the full range of output current,
1 mA to 1.5 A). These two key specifications yield a
significant improvement in operating life for
The device is enabled when EN is connected to a
low-level input voltage. This LDO family also features
a sleep mode; applying a TTL high signal to EN
(enable) shuts down the regulator, reducing the
quiescent current to less than 1 μA at TJ = +25°C.
Typical Application Circuit
(Fixed Voltage Options)
PG or RESET Output
(1) See Application Information for capacitor selection details.
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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.
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