The LT1764A series is a 3A low dropout regulator with features such as fast transient response and low noise.
The LT1764A is a low‑dropout regulator optimized for fast transient response and low output noise. It delivers up to 3 A of output current with a dropout voltage of 340 mV at full load and operates over a wide input range of 2.7 V to 20 V.
The device includes internal protection features such as reverse‑battery protection and current limiting, and is available in fixed‑output versions (1.5 V, 1.8 V, 2.5 V, 3.3 V) as well as an adjustable version covering 1.21 V to 20 V. Various 5‑lead and 16‑lead packages are offered for board‑level integration.
| Maximum Output Current | 3 A |
|---|---|
| Dropout Voltage (3 A) | 340 mV |
| Low Noise | 40 µV rms (10 Hz‑100 kHz) |
| Quiescent Current (Normal) | 1 mA |
| Quiescent Current (Shutdown) | < 1 µA |
| Input Voltage Range | 2.7 V – 20 V |
| Fixed Output Voltages | 1.5 V, 1.8 V, 2.5 V, 3.3 V |
| Adjustable Output Voltage Range | 1.21 V – 20 V |
| Reverse Battery Protection | Enabled |
The LT1764A can supply up to 3 A of output current.
The dropout voltage is 340 mV when delivering 3 A.
In shutdown the quiescent current is less than 1 µA.
It operates from 2.7 V up to 20 V input.