TPS72 - 微功耗低压降 (LDO) 稳压器

TPS72是TI德州仪器公司的一款单通道LDO产品，TPS72是微功耗低压降 (LDO) 稳压器，本站介绍了TPS72的封装应用图解、特点和优点、功能等，并给出了与TPS72相关的TI元器件型号供参考。

TPS72 - 微功耗低压降 (LDO) 稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品描述

The TPS72xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, micropower operation, and miniaturized packaging. These regulators feature extremely low dropout voltages and quiescent currents compared to conventional LDO regulators. Offered in small-outline integrated-circuit (SOIC) packages and 8-terminal thin shrink small-outline (TSSOP), the TPS72xx series devices are ideal for cost-sensitive designs and for designs 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 device. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low - maximum of 85 mV at 100 mA of load current (TPS7250) - and is directly proportional to the load current (see Figure 1). Since the PMOS pass element is a voltage-driven device, the quiescent current is very low (300 uA maximum) and is stable over the entire range of output load current (0 mA to 250 mA). Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage and micropower operation result in a significant increase in system battery operating life.

The TPS72xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 0.5 uA maximum at TJ = 25°C. Other features include a power-good function that reports low output voltage and may be used to implement a power-on reset or a low-battery indicator.

The TPS72xx is offered in 2.5-V, 3-V, 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for adjustable version).

产品特性

Available in 5-V, 4.85-V, 3.3-V, 3.0-V, and 2.5-V Fixed-Output and Adjustable Versions
Dropout Voltage <85 mV Max at IO = 100 mA (TPS7250)
Low Quiescent Current, Independent of Load, 180 uA Typ
8-Pin SOIC and 8-Pin TSSOP Package
Output Regulated to ±2% Over Full Operating Range for Fixed-Output Versions
Extremely Low Sleep-State Current, 0.5 uA Max
Power-Good (PG) Status Output

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