This document is the datasheet for TI's TPS2145 and TPS2147 products. It introduces the characteristics of the two products, including the application scenarios, working principles, electrical characteristics, etc.
The TPS2145/2147/2155/2157 family combines a low‑dropout regulator (LDO) with two high‑side MOSFET power‑distribution switches. Designed for DSP and portable applications, the devices provide controlled rise and fall times, over‑current indication, and thermal‑shutdown protection.
Key features include a 2.9 V‑5.5 V input range, adjustable LDO output (1 V‑3.3 V) or fixed 3.3 V, low dropout voltage (≈0.35 V), and up to 200 mA continuous output current. The parts are offered in 10‑pin MSOP, 14‑pin TSSOP and 8‑pin MSOP packages with various power‑rating options.
| Input voltage range | 2.9 V to 5.5 V |
|---|---|
| LDO output voltage (adjustable) | 1 V to 3.3 V |
| LDO output voltage (fixed) | 3.3 V |
| Maximum power dissipation (MSOP‑10) | 1.293 mW |
| Package options | TSSOP‑14, MSOP‑10, MSOP‑8 |
The devices operate with an input voltage between 2.9 V and 5.5 V.
The TPS2145 LDO can be adjusted to output between 1 V and 3.3 V.