LT1521IS8-3#PBF
Active300MA LOW DROPOUT REGULATORS WITH MICROPOWER QUIESCENT CURRENT AND SHUTDOWN
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LT1521IS8-3#PBF
Active300MA LOW DROPOUT REGULATORS WITH MICROPOWER QUIESCENT CURRENT AND SHUTDOWN
Technical Specifications
Parameters and characteristics for this part
| Specification | LT1521IS8-3#PBF |
|---|---|
| Control Features | Enable |
| Current - Output | 300 mA |
| Current - Quiescent (Iq) | 25 µA |
| Current - Supply (Max) [Max] | 12 mA |
| Mounting Type | Surface Mount |
| Number of Regulators | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Positive |
| Package / Case | 0.154 in |
| Package / Case | 8-SOIC |
| Package / Case | 3.9 mm |
| Protection Features | Over Temperature, Over Current, Reverse Polarity |
| PSRR | 58 dB |
| Supplier Device Package | 8-SO |
| Voltage - Input (Max) [Max] | 20 V |
| Voltage - Output (Min/Fixed) | 3 V |
| Voltage Dropout (Max) [Max] | 0.75 V |
LT1521 Series
300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown
| Part | Supplier Device Package | Package / Case | Package / Case | Package / Case | Mounting Type | Protection Features | Voltage Dropout (Max) [Max] | Voltage - Input (Max) [Max] | Current - Quiescent (Iq) | Control Features | Current - Supply (Max) [Max] | Output Type | PSRR | Voltage - Output (Max) [Max] | Number of Regulators | Current - Output | Voltage - Output (Min/Fixed) | Operating Temperature [Min] | Operating Temperature [Max] | Output Configuration | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc./Maxim Integrated | 8-SO | 0.154 in | 8-SOIC | 3.9 mm | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | Adjustable | 58 dB | 20 V | 1 | 300 mA | 3.8 V | 0 °C | 125 °C | Positive | |
 Analog Devices Inc./Maxim Integrated | 8-MSOP | 8-MSOP 8-TSSOP | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | 58 dB | 1 | 300 mA | 3.3 V | 0 °C | 125 °C | Positive | 0.118 in 3 mm Width | ||||
Analog Devices Inc./Maxim Integrated | 8-SO | 0.154 in | 8-SOIC | 3.9 mm | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | Adjustable | 58 dB | 20 V | 1 | 300 mA | 3.8 V | -40 C | 125 °C | Positive | |
Analog Devices Inc./Maxim Integrated | 8-MSOP | 8-MSOP 8-TSSOP | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | 58 dB | 1 | 300 mA | 5 V | 0 °C | 125 °C | Positive | 0.118 in 3 mm Width | ||||
Analog Devices Inc./Maxim Integrated | 8-SO | 0.154 in | 8-SOIC | 3.9 mm | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | 58 dB | 1 | 300 mA | 3.3 V | -40 C | 125 °C | Positive | |||
 Analog Devices Inc./Maxim Integrated | 8-SO | 0.154 in | 8-SOIC | 3.9 mm | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | 58 dB | 1 | 300 mA | 5 V | -40 C | 125 °C | Positive | |||
Analog Devices Inc./Maxim Integrated | 8-SO | 0.154 in | 8-SOIC | 3.9 mm | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | 58 dB | 1 | 300 mA | 3 V | -40 C | 125 °C | Positive | |||
Analog Devices Inc./Maxim Integrated | 8-SO | 0.154 in | 8-SOIC | 3.9 mm | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | 58 dB | 1 | 300 mA | 5 V | 0 °C | 125 °C | Positive | |||
 Analog Devices Inc./Maxim Integrated | SOT-223-3 | TO-261-4 TO-261AA | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | 58 dB | 1 | 300 mA | 3 V | -40 C | 125 °C | Positive | |||||
Analog Devices Inc./Maxim Integrated | 8-SO | 0.154 in | 8-SOIC | 3.9 mm | Surface Mount | Over Current Over Temperature Reverse Polarity | 0.75 V | 20 V | 25 µA | Enable | 12 mA | 58 dB | 1 | 300 mA | 5 V | 0 °C | 125 °C | Positive |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | N/A | 0 | $ 9.33 | 1m+ |
Description
General part information
LT1521 Series
The LT1521/LT1521-3/LT1521-3.3/LT1521-5 are low dropout regulators with micropower quiescent current and shutdown. These devices are capable of supplying 300mA of output current with a dropout voltage of 0.5V.Designed for use in battery-powered systems, the low quiescent current, 12μA operating and 6μA in shutdown, makes them an ideal choice. The quiescent current is well controlled; it does not rise in dropout as it does with many other low dropout PNP regulators.Other features of the LT1521/LT1521-3/LT1521-3.3/LT1521-5 include the ability to operate with very small output capacitors. They are stable with only 1.5μF on the output while most older devices require between 10μF and 100μF for stability. Small ceramic capacitors can be used, enhancing manufacturability. Also, the input may be connected to voltages lower than the output voltage, including negative voltages, without reverse current flow from output to input. This makes the LT1521 series ideal for backup power situations where the output is held high and the input is low or reversed. Under these conditions only 5μA will flow from the output pin to ground.APPLICATIONSLow Current RegulatorRegulator for Battery-Powered SystemsPost Regulator for Switching Supplies