DocumentationDatasheet
Application Note
Reliability Data
cad_symbol
ltspice
Features
- Low Noise: 20µVRMS (10Hz to 100kHz)
- Output Current: 300mA
- Low Quiescent Current: 30µA
- Wide Input Voltage Range: 1.8V to 20V
- Low Dropout Voltage: 270mV
- Very Low Shutdown Current: < 1µA
- No Protection Diodes Needed
- Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V
- Adjustable Output from 1.22V to 20V
- Stable with 3.3µF 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 LT1962 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 300mA of output current with a dropout voltage of 270mV. Designed for use in battery-powered systems, the low 30µA 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 LT1962 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 LT1962 regulators are stable with output capacitors as low as 3.3µF. 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 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1962 regulators are available in the 8-lead MSOP package.
MS-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LT1962EMS8#PBF | MSOP | 8 | E | $2.00 | $1.65 |
| LT1962EMS8#TRPBF | MSOP | 8 | E | $1.71 | |
| LT1962EMS8-1.5#PBF | MSOP | 8 | E | $2.00 | $1.65 |
| LT1962EMS8-1.5#TRPBF | MSOP | 8 | E | $1.71 | |
| LT1962EMS8-1.8#PBF | MSOP | 8 | E | $2.00 | $1.65 |
| LT1962EMS8-1.8#TRPBF | MSOP | 8 | E | $1.71 | |
| LT1962EMS8-2.5#PBF | MSOP | 8 | E | $2.00 | $1.65 |
| LT1962EMS8-2.5#TRPBF | MSOP | 8 | E | $1.71 | |
| LT1962EMS8-3#PBF | MSOP | 8 | E | $2.00 | $1.65 |
| LT1962EMS8-3#TRPBF | MSOP | 8 | E | $1.71 | |
| LT1962EMS8-3.3#PBF | MSOP | 8 | E | $2.00 | $1.65 |
| LT1962EMS8-3.3#TRPBF | MSOP | 8 | E | $1.71 | |
| LT1962EMS8-5#PBF | MSOP | 8 | E | $2.00 | $1.65 |
| LT1962EMS8-5#TRPBF | MSOP | 8 | E | $1.71 | |
| LT1962IMS8#TRPBF | MSOP | 8 | I | $1.96 | |
| LT1962IMS8#PBF | MSOP | 8 | I | $2.71 | $1.90 |
| LT1962EMS8-3 | MSOP | 8 | E | $4.00 | $3.30 |
| LT1962EMS8-3#TR | MSOP | 8 | E | $3.42 | |
| LT1962EMS8#TR | MSOP | 8 | E | $3.42 | |
| LT1962EMS8-3.3#TR | MSOP | 8 | E | $3.42 | |
| LT1962EMS8-5#TR | MSOP | 8 | E | $3.42 | |
| LT1962EMS8-3.3 | MSOP | 8 | E | $4.00 | $3.30 |
| LT1962EMS8-2.5#TR | MSOP | 8 | E | $3.42 | |
| LT1962EMS8-2.5 | MSOP | 8 | E | $4.00 | $3.30 |
| LT1962EMS8 | MSOP | 8 | E | $4.00 | $3.30 |
| LT1962EMS8-5 | MSOP | 8 | E | $4.00 | $3.30 |
| LT1962EMS8-1.5 | MSOP | 8 | E | $4.00 | $3.30 |
| LT1962EMS8-1.5#TR | MSOP | 8 | E | $3.42 | |
| LT1962EMS8-1.8 | MSOP | 8 | E | $4.00 | $3.30 |
| LT1962EMS8-1.8#TR | MSOP | 8 | E | $3.42 |
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 |
|---|---|---|---|
| DC339A-B | LT1962EMS8 Demo Board | Low Noise LDO Regulator, 2.3V ≤ VIN ≤ 20V, Vout = 1.22/2.5/3.0/3.3/5Vout@300mA | $75.00 |