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Product details

Parameters

Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.15 Vin (Max) (V) 10 Vin (Min) (V) 2.7 Vout (Max) (V) 5.5 Vout (Min) (V) 1.2 Fixed output options (V) 1.5, 1.8, 2.5, 2.8, 3, 3.3, 5 Noise (uVrms) 200 Iq (Typ) (mA) 0.03 Thermal resistance θJA (°C/W) 176 Approx. price (US$) 0.67 | 1ku Load capacitance (Min) (µF) 4.7 Rating Catalog Regulated outputs (#) 1 Features Enable, Power Good Accuracy (%) 3 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 85 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Linear regulators (LDO)

Features

  • 150-mA Low-Dropout Voltage Regulator
  • Available in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V, 5.0-V Fixed Output and Adjustable Versions
  • Dropout Voltage to 85 mV (Typ) at 150 mA (TPS76550)
  • Ultra-Low 35-uA Typical Quiescent Current
  • 3% Tolerance Over Specified Conditions for Fixed-Output Versions
  • Open Drain Power Good
  • 8-Pin SOIC Package
  • Thermal Shutdown Protection
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Description

This device is designed to have an ultra-low quiescent current and be stable with a 4.7-uF capacitor. This combination provides high performance at a reasonable cost.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 85 mV at an output current of 150 mA for the TPS76550) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 35 uA over the full range of output current, 0 mA to 150 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. 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 uA (typ).

Power good (PG) is an active high output, which can be used to implement a power-on reset or a low-battery indicator.

The TPS765xx is offered in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V and 5.0-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.25 V to 5.5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS765xx family is available in 8 pin SOIC package.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS7A25 ACTIVE 300-mA, 18-V, ultra-low-IQ, high-accuracy, adjustable low-dropout voltage regulator with power good An 18-V, 300-mA LDO regulator with power-good and ultra-low IQ (2.5 μA)

Technical documentation

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Type Title Date
* Datasheet Ultra-Low Quiescent-Current 150-mA Low-Dropout Voltage Regulators datasheet Sep. 01, 1999
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

Design & development

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SOIC (D) 8 View options

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