

TPS770是TI公司的一款单通道LDO产品,TPS770是10V、50mA、低 Iq、低压降线性稳压器,本页介绍了TPS770的产品说明、应用、特性等,并给出了与TPS770相关的TI元器件型号供参考。
TPS770 - 10V、50mA、低 Iq、低压降线性稳压器 - 单通道LDO - 线性稳压器(LDO) - TI公司(Texas Instruments,德州仪器)
The TPS770xx 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 TPS770xx 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 \x97 typically 35 mV at 50 mA of load current (TPS77050) \x97 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 50 mA). Intended for use in portable systems such as laptops and cellular phones, the ultralow-dropout voltage feature and ultralow-power operation result in a significant increase in system battery operating life.
The TPS770xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA typical at TJ = 25°C. The TPS770xx 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).
- 50-mA Low-Dropout Regulator
- Available 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-Output and Adjustable Versions
- Only 17 uA Quiescent Current at 50 mA
- 1 uA Quiescent Current in Standby Mode
- Dropout Voltage Typically 35 mV at 50 mA
- Over Current Limitation
- \x9640°C to 125°C Operating Junction Temperature Range
- 5-Pin SOT-23 (DBV) Package

