LT3088 - 800mA Single Resistor Rugged Linear Regulator
Features
- Extended Safe Operating Area
- Maximum Output Current: 800mA
- Stable with or without Input/Output Capacitors
- Wide Input Voltage Range: 1.2V to 36V
- Single Resistor Sets Output Voltage
- Output Adjustable to 0V
- 50μA SET Pin Current: 1% Initial Accuracy
- Output Voltage Noise: 27μVRMS
- Parallel Multiple Devices for Higher Current, Heat Spreading and Lower Noise
- Pin Compatible Upgrade to LT1117
- Reverse-Battery and Reverse-Current Protection
- <1mV Typical Load Regulation Independent of VOUT
- <0.001%/V Typical Line Regulation
- 3-Lead SOT-223, 3-Lead DD-Pak, 8-Lead 3mm × 3mm DFN Packages
Typical Application
Description
The LT®3088 is an 800mA low dropout linear regulator designed for rugged industrial applications. A key feature of the IC is the extended safe operating area (SOA). The LT3088 can be paralleled for higher output current or heat spreading. The device withstands reverse input and reverse output-to-input voltages without reverse current flow.
The LT3088’s precision 50μA reference current source allows a single resistor to program output voltage to any level between zero and 34.5V. The current reference architecture makes load regulation independent of output voltage. The LT3088 is stable with or without input and output capacitors.
Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and thermal limiting. The LT3088 is offered in the 3-lead SOT-223, 3-lead DD-Pak, and an 8-lead 3mm × 3mm DFN package.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT3088EDD#PBF | 3x3 DFN-8 | DD | E | 05-08-1698 | Yes |
| LT3088EDD#TRPBF | 3x3 DFN-8 | DD | E | 05-08-1698 | Yes |
| LT3088EM#PBF | DDPAK-3 | M | E | 05-08-1460 | Yes |
| LT3088EM#TRPBF | DDPAK-3 | M | E | 05-08-1460 | Yes |
| LT3088EST#PBF | SOT-223 | ST | E | 05-08-1630 | Yes |
| LT3088EST#TRPBF | SOT-223 | ST | E | 05-08-1630 | Yes |
| LT3088HDD#PBF | 3x3 DFN-8 | DD | H | 05-08-1698 | Yes |
| LT3088HDD#TRPBF | 3x3 DFN-8 | DD | H | 05-08-1698 | Yes |
| LT3088HM#PBF | DDPAK-3 | M | H | 05-08-1460 | Yes |
| LT3088HM#TRPBF | DDPAK-3 | M | H | 05-08-1460 | Yes |
| LT3088HST#PBF | SOT-223 | ST | H | 05-08-1630 | Yes |
| LT3088HST#TRPBF | SOT-223 | ST | H | 05-08-1630 | Yes |
| LT3088IDD#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LT3088IDD#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LT3088IM#PBF | DDPAK-3 | M | I | 05-08-1460 | Yes |
| LT3088IM#TRPBF | DDPAK-3 | M | I | 05-08-1460 | Yes |
| LT3088IST#PBF | SOT-223 | ST | I | 05-08-1630 | Yes |
| LT3088IST#TRPBF | SOT-223 | ST | I | 05-08-1630 | Yes |
| LT3088MPM | DDPAK-3 | M | MP | 05-08-1460 | No |
| LT3088MPM#PBF | DDPAK-3 | M | MP | 05-08-1460 | Yes |
| LT3088MPM#TRPBF | DDPAK-3 | M | MP | 05-08-1460 | Yes |
| LT3088MPST#PBF | SOT-223 | ST | MP | 05-08-1630 | Yes |
| LT3088MPST#TRPBF | SOT-223 | ST | MP | 05-08-1630 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT3088EDD#PBF | 3x3 DFN-8 | E | $2.86 | $2.00 | Yes | |
| LT3088EDD#TRPBF | 3x3 DFN-8 | E | $2.06 | Yes | ||
| LT3088EM#PBF | DDPAK-3 | E | $3.14 | $2.20 | Yes | |
| LT3088EM#TRPBF | DDPAK-3 | E | $2.26 | Yes | ||
| LT3088EST#PBF | SOT-223 | E | $2.79 | $1.95 | Yes | |
| LT3088EST#TRPBF | SOT-223 | E | $2.01 | Yes | ||
| LT3088HDD#PBF | 3x3 DFN-8 | H | $3.75 | $2.63 | Yes | |
| LT3088HDD#TRPBF | 3x3 DFN-8 | H | $2.69 | Yes | ||
| LT3088HM#PBF | DDPAK-3 | H | $4.09 | $2.86 | Yes | |
| LT3088HM#TRPBF | DDPAK-3 | H | $2.92 | Yes | ||
| LT3088HST#PBF | SOT-223 | H | $3.66 | $2.56 | Yes | |
| LT3088HST#TRPBF | SOT-223 | H | $2.62 | Yes | ||
| LT3088IDD#PBF | 3x3 DFN-8 | I | $3.29 | $2.30 | Yes | |
| LT3088IDD#TRPBF | 3x3 DFN-8 | I | $2.36 | Yes | ||
| LT3088IM#PBF | DDPAK-3 | I | $3.62 | $2.53 | Yes | |
| LT3088IM#TRPBF | DDPAK-3 | I | $2.59 | Yes | ||
| LT3088IST#PBF | SOT-223 | I | $3.17 | $2.22 | Yes | |
| LT3088IST#TRPBF | SOT-223 | I | $2.28 | Yes | ||
| LT3088MPM | DDPAK-3 | MP | $8.49 | $5.94 | No | |
| LT3088MPM#PBF | DDPAK-3 | MP | $8.49 | $5.94 | Yes | |
| LT3088MPM#TRPBF | DDPAK-3 | MP | $6.00 | Yes | ||
| LT3088MPST#PBF | SOT-223 | MP | $7.53 | $5.27 | Yes | |
| LT3088MPST#TRPBF | SOT-223 | MP | $5.33 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
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 |
|---|---|---|---|
| DC2279A | LT3088EDD Demo Board | 800mA Wide SOA Linear Regulator, 1.6V ≤ VIN ≤ 36V, Vout = 1.2V/1.5V/1.8V/2.5V/3.3V/5V @ 800mA | $100.00 | |
| Buy Now | |||
Applications
- All Surface Mount Power Supply
- Rugged Industrial Power Supply
- Post Regulator for Switching Supplies
- Low Output Voltage Supply
- Intrinsic Safety Applications
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Design Tools
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LT3088
Technical Support
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