LT1762 - 150mA, Low Noise, LDO Micropower Regulators
Features
- Low Noise: 20µVRMS (10Hz to 100kHz)
- Low Quiescent Current: 25µA
- Wide Input Voltage Range: 1.8V to 20V
- Output Current: 150mA
- Very Low Shutdown Current: < 1µA
- Low Dropout Voltage: 270mV
- No Protection Diodes Needed
- Fixed Output Voltages: 2.5V, 3V, 3.3V, 5V
- Adjustable Output from 1.22V to 20V
- Stable with 2.2µF Output Capacitor
- Stable with Aluminum, Tantalum or Ceramic Capacitors
- Reverse Battery Protection
- No Reverse Current
- Overcurrent and Overtemperature Protected
- 8-Lead MSOP Package
Typical Application
Description
The LT1762 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 150mA of output current with a dropout voltage of 300mV. Designed for use in battery-powered systems, the low 25µA quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators.A key feature of the LT1762 regulators is low output noise. With the addition of an external 0.01µF bypass capacitor, output noise drops to 20µVRMS over a 10Hz to 100kHz bandwidth. The LT1762 regulators are stable with output capacitors as low as 2.2µF. Small ceramic capacitors can be used without the series resistance required by other regulators.
Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The parts come in fixed output voltages of 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1762 regulators are available in the 8-lead MSOP 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 |
|---|---|---|---|---|---|
| LT1762EMS8-2.5#PBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8-2.5#TRPBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8-3.3#PBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8-3.3#TRPBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8-3#PBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8-3#TRPBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8-5#PBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8-5#TRPBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8#PBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LT1762EMS8#TRPBF | MS-8 | MS8 | E | 05-08-1660 | 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 | |
|---|---|---|---|---|---|---|
| LT1762EMS8-2.5#PBF | MS-8 | E | $1.30 | $1.10 | Yes | |
| LT1762EMS8-2.5#TRPBF | MS-8 | E | $1.16 | Yes | ||
| LT1762EMS8-3.3#PBF | MS-8 | E | $1.30 | $1.10 | Yes | |
| LT1762EMS8-3.3#TRPBF | MS-8 | E | $1.16 | Yes | ||
| LT1762EMS8-3#PBF | MS-8 | E | $1.30 | $1.10 | Yes | |
| LT1762EMS8-3#TRPBF | MS-8 | E | $1.16 | Yes | ||
| LT1762EMS8-5#PBF | MS-8 | E | $1.30 | $1.10 | Yes | |
| LT1762EMS8-5#TRPBF | MS-8 | E | $1.16 | Yes | ||
| LT1762EMS8#PBF | MS-8 | E | $1.30 | $1.10 | Yes | |
| LT1762EMS8#TRPBF | MS-8 | E | $1.16 | 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 |
|---|---|---|---|
| DC279A-B | LTC1736, LTC1772, LTC1762 | Low Cost VRM (Intel), 7.5 to 24Vin, 1.3V to 1.6Vout @ 14A, 1.5Vout @ 0.12 to 2.5A, 2.5Vout @ 0.15A | Contact Factory | |
| DC339A-A | LT1762EMS8 Demo Board | Micropower Low Noise LDO Regulator, 2.3V ≤ VIN ≤ 20V, Vout = 1.22V/2.5V/3V/3.3V/5V/Adj @ 150mA | $75.00 | |
| Buy Now | |||
Applications
- Cellular Phones
- Battery-Powered Systems
- Frequency Synthesizers
- Noise-Sensitive Instrumentation Systems
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
To launch a ready to run LTspice demonstration circuit for this part:
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To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.
Models for the following parts are available in LTspice:
LT1762
LT1762-1.5
LT1762-1.8
LT1762-2.5
LT1762-3
LT1762-3.3
LT1762-5
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
