Product overview
Description
The LDS3985 provides up to 300 mA, from 2.5 V to 6 V input voltage. It is stable with ceramic and high quality tantalum capacitor. The ultra low drop voltage, low quiescent current and low noise make it suitable for low power applications and battery-powered systems. Shutdown logic control function is available, 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. Typical applications are mobile phones and similar battery-powered wireless systems, portable information appliances.
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All features
- Input voltage from 2.5 V to 6 V
- Stable with low ESR ceramic capacitors
- Very low dropout voltage (150 mV typ. at 300 mA load, 0.4 mV typ. at 1 mA load)
- Very low quiescent current (85 µA typ. at no load, 200 µA typ. at 300 mA load; max.1.5 µA in OFF mode)
- Guaranteed output current up to 300 mA
- Wide range of output voltages available on request: fixed from 1.25 V to 5 V with 100 mV step
- Fast turn-on time: typ. 240 µs
- [CO = 2.2 µF, CBYP = 33 nF and IO= 1 mA]
- Logic-controlled electronic shutdown
- Internal current and thermal limit
- Low output voltage noise: 30 µ VRMS over 10 Hz to 100 kHz
- SVR of 55 dB at 1 kHz, 50 dB at 10 kHz
- Temperature range: - 40 °C to 125 °C
- Automotive grade product available in DFN6 package, temperature range: - 40 °C to 85 °C
EDA Symbols, Footprints and 3D Models
STMicroelectronics - LDS3985
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3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| LDS3985M18R | Active | SOT23-5L | Industrial | Ecopack3 | |
| LDS3985M25R | Active | SOT23-5L | Industrial | Ecopack2 | |
| LDS3985M30R | Active | SOT23-5L | Industrial | Ecopack2 | |
| LDS3985M33R | Active | SOT23-5L | Industrial | Ecopack3 | |
| LDS3985PU15R | Active | DFN6 3x3 | Industrial | Ecopack2 | |
| LDS3985PU18RY | NRND | DFN6 3x3 | Automotive | Ecopack2 |
LDS3985PU15R
Package:
DFN6 3x3Material Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | ||
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| LDS3985M30R | | | distributors No availability of distributors reported, please contact our sales office |
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| LDS3985M25R | | | distributors No availability of distributors reported, please contact our sales office |
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| LDS3985M18R | | | distributors No availability of distributors reported, please contact our sales office |
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| LDS3985M33R | | | distributors No availability of distributors reported, please contact our sales office |
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| LDS3985PU15R | | | distributors No availability of distributors reported, please contact our sales office |
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| LDS3985PU18RY | | | distributors No availability of distributors reported, please contact our sales office |
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LDS3985M30R Active
LDS3985M25R Active
LDS3985M18R Active
LDS3985M33R Active
LDS3985PU15R Active
LDS3985PU18RY NRND
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors