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The LD39050 provides 500 mA maximum current with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 200 mV. Stability is given by ceramic capacitors. The ultra low drop voltage, low quiescent current and low noise features make it suitable for low power batterypowered applications. Power supply rejection is 65 dB at low frequencies and starts to roll off at 10 kHz. The enable logic control function puts the LD39050 in shutdown mode allowing a total current consumption lower than 1 μA. The device also includes short-circuit constant current limiting and thermal protection. Typical applications are mobile phones, hard disks and battery-powered systems.
Key Features
- Input voltage from 1.5 to 5.5 V
- Ultra low-dropout voltage (200 mV typ. at 500 mA load)
- Very low quiescent current (20 μA typ. at no load, 100 μA typ. at 500 mA load, 1 μA max. in OFF mode)
- Very low noise without bypass capacitor
- Output voltage tolerance: ± 2.0% @ 25 °C
- 500 mA guaranteed output current
- Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 mV step and adjustable from 0.8 V
- Logic-controlled electronic shutdown
- Compatible with ceramic capacitor COUT = 1 μF
- Internal current and thermal limit
- Package DFN6 (3x3 mm) and DFN6 (2x2 mm)
- Temperature range: from -40 °C to 125 °C
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Product Specifications (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 13 Dec 2019 |
13 Dec 2019
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Selection Guides (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 04 Jan 2021 |
04 Jan 2021
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Brochures (2)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 15 Feb 2019 |
15 Feb 2019
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| 26 Feb 2020 |
26 Feb 2020
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - LD39050
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Symbols
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| LD39050PU25R |
Active
|
DFN6 3x3 | Industrial | Ecopack2 |
|
| LD39050PU33R |
Active
|
DFN6 3x3 | Industrial | Ecopack2 | |
| LD39050PUR |
Active
|
DFN6 3x3 | Industrial | Ecopack2 |
|
| LD39050PV10R |
Active
|
DFN6 2x2 | Industrial | Ecopack2 |
|
| LD39050PVR |
Active
|
DFN6 2x2 | Industrial | Ecopack2 |
|
(**) 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 | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | Country of Origin | Budgetary Price (US$)*/Qty | More info | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||||
| LD39050PU25R | 3 distributors | Free Sample Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DFN6 3x3 | -40 | 125 | 2.5 | 2 | 0.5 | MALAYSIA | 0.405 / 1k | ||
| LD39050PVR | 3 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DFN6 2x2 | -40 | 125 | - | 2 | 0.5 | MALAYSIA | 0.405 / 1k | ||
| LD39050PV10R | 1 distributors | Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DFN6 2x2 | -40 | 125 | 1 | 2 | 0.5 | MALAYSIA | 0.405 / 1k | ||
| LD39050PUR | 9 distributors | Free Sample Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DFN6 3x3 | -40 | 125 | - | 2 | 0.5 | MALAYSIA | 0.405 / 1k | ||
| LD39050PU33R | 8 distributors | Free Sample Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | DFN6 3x3 | -40 | 125 | 3.3 | 2 | 0.5 | MALAYSIA | 0.405 / 1k | ||
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
