LD2985
LD2985 is Very low drop and low noise voltage regulator manufactured by STMicroelectronics.
Very low drop and low noise voltage regulator with inhibit function
SOT23-5L
Features
- Very low dropout voltage (280 m V at 150 m A and 7 m V at 1 m A load)
- Very low quiescent current (2 m A typ. at 150 m A load and 80 µA at no load)
- Output current up to 150 m A
- Logic controlled electronic shutdown
- Output voltage of 1.8, 2.5, 2.8, 3, 3.1, 3.3, 5 V
- Internal current and thermal limit
- Low output noise voltage 30 µVrms
- Small package SOT23-5L
- Temperature range:
- 40 °C to 125 °C
- production data
Description
The LD2985 is a 150 m A fixed output voltage regulator. The ultra low drop voltage and the low quiescent current make them particularly suitable for low noise, low power applications, and in battery powered systems. In sleep mode quiescent current is less than 1 µA when INHIBIT pin is pulled low. Shutdown logic control function is available on pin 3 (TTL patible). This means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. An external capacitor, CBYP = 10 n F, connected between bypass pin and GND reduces the noise to 30 µVrms. Typical application are in cellular phone, palmtop laptop puter, personal digital assistant (PDA), personal stereo, camcorder and camera.
Table 1. Device summary
Order codes
Output voltages
LD2985BM18R
1.8 V
LD2985BM25R
2.5 V
LD2985BM28R LD2985BM30R
2.8 V 3.0 V
LD2985BM31R
3.1 V
LD2985BM33R
3.3...
