Automotive Catalog Ultralow-Power 100-mA Low-Dropout Linear Regulator
The TPS769xx-Q1 family of low-dropout (LDO) voltage Regulators offers the benefits of low dropout voltage, ultralow-power operation, and miniaturized packaging. These Regulators feature low dropout voltages and ultralow quiescent current compared to conventional LDO Regulators Offered in a 5-terminal small outline integrated-circuit SOT-23 package, the TPS769xx-Q1 series devices are ideal for micropower operations and where board space is at a premium.
A combination of new circuit design and process innovation has enabled the usual PNP pass Transistor to be replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low, typically 71 mV at 100 mA of load current TPS76950-Q1 , and is directly proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current is ultralow (28 uA maximum) and is stable over the entire range of output load current (0 mA to 100 mA). The ultralow-dropout voltage feature and ultralow-power operation result in a significant increase in system battery operating life, making this device suitable for use in automotive applications.
The TPS769xx-Q1 also features a logic-enabled sleep mode to shut down the Regulator reducing quiescent current to 1 uA typical at TJ = 25C. The TPS769xx-Q1 is offered in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V fixed-voltage versions and in a variable version (programmable over the range of 1.2 V to 5.5 V).
By Texas Instruments
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