DocumentationDatasheet
Reliability Data
Press Release
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Features
- Input Voltage Range: 1.8V to 45V
- Output Current: 500mA
- Active Output Discharge
- Dropout Voltage: 300mV
- Programmable Precision Current Limit: ±10%
- Power Good Flag
- Input Filtering for High PSRR
- Low Noise: 25μVRMS (10Hz to 100kHz)
- Adjustable Output (VREF = VOUT(MIN) = 600mV)
- Output Tolerance: ±2% Over Line, Load and Temperature
- Stable with Low ESR, Ceramic Output Capacitors (3.3μF Minimum)
- Single Capacitor Soft-Starts Reference and Lowers Output Noise
- Current Limit Foldback Protection
- Shutdown Current: <3μA
- Reverse Battery and Thermal Limit Protection
- 12-Lead 4mm × 3mm DFN and 12-lead MSOP Packages
Typical Application
Description
The LT®3066 series are micropower, low noise, low dropout voltage (LDO) linear regulators that operate over a 1.8V to 45V input voltage range. The devices supply 500mA of output current with a typical dropout voltage of 300mV. A single external capacitor provides programmable low noise reference performance and output soft-start functionality.
A single external resistor programs the LT3066’s current limit, accurate to ±10% over a wide input voltage and temperature range. A PWRGD flag indicates output regulation.
The LT3066 features an NMOS pull-down that discharges the output if SHDN or IN is driven low.
The LT3066 optimizes stability and transient response with low ESR ceramic capacitors, requiring a minimum of 3.3μF. Internal protection circuitry includes current limiting with foldback, thermal limiting, reverse battery protection, reverse current protection and reverse output protection.
The LT3066 is available in fixed output voltages of 3.3V and 5V, and as an adjustable device with an output voltage range from 0.6V to 19V. The device is offered in the thermally-enhanced 12-lead 4mm × 3mm DFN and MSOP packages.
4x3 DFN-12,MS-12E
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LT3066EMSE#PBF | MSOP | 12 | E | $2.86 | $2.00 |
| LT3066IMSE#PBF | MSOP | 12 | I | $3.14 | $2.20 |
| LT3066EDE#PBF | DFN | 12 | E | $2.86 | $2.00 |
| LT3066IMSE#TRPBF | MSOP | 12 | I | $3.20 | $2.26 |
| LT3066EMSE#TRPBF | MSOP | 12 | E | $2.92 | $2.06 |
| LT3066IDE#PBF | DFN | 12 | I | $3.14 | $2.20 |
| LT3066EDE#TRPBF | DFN | 12 | E | $2.92 | $2.06 |
| LT3066IDE#TRPBF | DFN | 12 | I | $3.20 | $2.26 |
| LT3066EDE-3.3#PBF | DFN | 12 | E | $2.86 | $2.00 |
| LT3066IMSE-3.3#TRPBF | MSOP | 12 | I | $3.20 | $2.26 |
| LT3066IDE-3.3#TRPBF | DFN | 12 | I | $3.20 | $2.26 |
| LT3066IMSE-3.3#PBF | MSOP | 12 | I | $3.14 | $2.20 |
| LT3066IDE-5#PBF | DFN | 12 | I | $3.14 | $2.20 |
| LT3066EDE-5#TRPBF | DFN | 12 | E | $2.92 | $2.06 |
| LT3066EMSE-5#PBF | MSOP | 12 | E | $2.86 | $2.00 |
| LT3066IDE-5#TRPBF | DFN | 12 | I | $3.20 | $2.26 |
| LT3066EDE-5#PBF | DFN | 12 | E | $2.86 | $2.00 |
| LT3066IDE-3.3#PBF | DFN | 12 | I | $3.14 | $2.20 |
| LT3066IMSE-5#PBF | MSOP | 12 | I | $3.14 | $2.20 |
| LT3066EDE-3.3#TRPBF | DFN | 12 | E | $2.92 | $2.06 |
| LT3066EMSE-3.3#PBF | MSOP | 12 | E | $2.86 | $2.00 |
| LT3066IMSE-5#TRPBF | MSOP | 12 | I | $3.20 | $2.26 |
| LT3066EMSE-5#TRPBF | MSOP | 12 | E | $2.92 | $2.06 |
| LT3066EMSE-3.3#TRPBF | MSOP | 12 | E | $2.92 | $2.06 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC2437A | LT3066 Demo Board | Low Noise Linear Regulator, Active Output Discharge, 1.8V ≤ VIN ≤ 45V, Vout = 1.2/1.5/1.8/2.0/2.5/3.3/5V @ 500mA | $100.00 |