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).
| 类型 | 标题 | 下载最新的英语版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 数据表 | MicroPower Low-Dropout (LDO) Voltage Regulators 数据表 (Rev. G) | 2000年 6月 5日 | |||
| 应用手册 | LDO 噪声揭秘 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2020年 9月 16日 | |
| 应用手册 | Fundamental Theory of PMOS LDO Voltage Regulators (Rev. A) | 2018年 8月 17日 | ||||
| 应用手册 | LDO PSRR Measurement Simplified (Rev. A) | PDF | HTML | 2017年 8月 9日 | |||
| 应用手册 | 简化的 LDO PSRR 测量 | 最新英语版本 (Rev.A) | PDF | HTML | 2010年 7月 28日 | ||
| 应用手册 | Technical Review of Low Dropout Voltage Regulator Operation And Performance | 1999年 8月 30日 |
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ASLK PRO 配备有来自德州仪器 (TI) 的三个通用运算放大器 (TL082) 和三个高带宽精度模拟倍增器 (MPY634)。我们亦使用了来自德州仪器 (TI) 的两个 12 位并行输入倍增数模转换器 DAC7821、一个宽输入非同步降压型 DC/DC 控制器 TPS40200 和一个低压降稳压器 TPS7250。ASLK PRO 的一部分留作通用原型，可用于执行小型项目。
This spreadsheet calculates the operating parameters for the Texas Instruments TPS7x01 family of adjustable low dropout regulators.
The closest 1% resistor values are calculated, as well as, the maximum power dissipation, worst-case output voltages, Power-Good trip voltages, and maximum (...)
| 封装 | 引脚 | 下载 |
|---|---|---|
| PDIP (P) | 8 | 查看选项 |
| SOIC (D) | 8 | 查看选项 |
| TSSOP (PW) | 8 | 查看选项 |