LT1129IS8-3.3#TRPBF
ActiveMICROPOWER LOW DROPOUT REGULATORS WITH SHUTDOWN
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LT1129IS8-3.3#TRPBF
ActiveMICROPOWER LOW DROPOUT REGULATORS WITH SHUTDOWN
Deep-Dive with AI
Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | LT1129IS8-3.3#TRPBF | LT1129 Series |
|---|---|---|
| Control Features | Enable | Enable |
| Current - Output | 700 mA | 700 mA |
| Current - Quiescent (Iq) | 70 µA | 70 µA |
| Mounting Type | Surface Mount | Surface Mount, Through Hole |
| Number of Regulators | 1 | 1 |
| Operating Temperature [Max] | 125 °C | 125 °C |
| Operating Temperature [Min] | -40 °C | -55 - 0 °C |
| Output Configuration | Positive | Positive |
| Output Type | 1.81 mOhm | 1.81 mOhm |
| Output Type | - | Adjustable |
| Package / Case | 8-SOIC | TO-261AA, TO-261-4, TO-220-5, 8-SOIC, TO-263-6, TO-263BA, D2PAK (5 Leads + Tab) |
| Package / Case [x] | 0.154 in | 0.154 in |
| Package / Case [y] | 3.9 mm | 3.9 mm |
| Protection Features | Reverse Polarity, Over Temperature | Reverse Polarity, Over Temperature |
| PSRR | 64 dB | 64 dB |
| Supplier Device Package | 8-SO | SOT-223-3, TO-220-5, 8-SO, DDPAK-5, TO-220-5 Flow 6 |
| Voltage - Input (Max) [Max] | 30 V | 30 V |
| Voltage - Output (Max) | - | 30 V |
| Voltage - Output (Min/Fixed) | 3.3 V | 3.3 - 5 V |
| Voltage Dropout (Max) [Max] | 0.7 V | 0.7 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 2500 | $ 5.55 | |
LT1129 Series
Micropower Low Dropout Regulators with Shutdown
| Part | Current - Quiescent (Iq) | Control Features | Current - Output | Output Type | Voltage - Output (Min/Fixed) | Mounting Type | Number of Regulators | Voltage Dropout (Max) [Max] | PSRR | Operating Temperature [Min] | Operating Temperature [Max] | Package / Case | Output Configuration | Voltage - Input (Max) [Max] | Supplier Device Package | Protection Features | Package / Case [y] | Package / Case [x] | Output Type | Voltage - Output (Max) [Max] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices LT1129MPST-3.3 | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | -55 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CST-5#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129IT-3.3#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Through Hole | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | TO-220-5 | Positive | 30 V | TO-220-5 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CS8-5#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | 8-SOIC | Positive | 30 V | 8-SO | Over Temperature, Reverse Polarity | 3.9 mm | 0.154 in | ||
Analog Devices LT1129IQ-5#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129IST-3.3#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CQ-5#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CQ-3.3#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CST-5#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129IST-5 | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CST-3.3#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129IST-3.3#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CQ-3.3#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CQ#TRPBF | 70 µA | Enable | 700 mA | 3.8 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | Adjustable | 30 V | |||
Analog Devices LT1129IST-5#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129CT#PBF | 70 µA | Enable | 700 mA | 3.8 V | Through Hole | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | TO-220-5 | Positive | 30 V | TO-220-5 | Over Temperature, Reverse Polarity | Adjustable | 30 V | |||
Analog Devices LT1129CS8-3.3#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | 8-SOIC | Positive | 30 V | 8-SO | Over Temperature, Reverse Polarity | 3.9 mm | 0.154 in | ||
Analog Devices LT1129IQ-3.3#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129IT-5#06PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Through Hole | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | TO-220-5 | Positive | 30 V | TO-220-5 Flow 6 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129IQ#PBF | 70 µA | Enable | 700 mA | 3.8 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | Adjustable | 30 V | |||
Analog Devices LT1129IS8-5#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | 8-SOIC | Positive | 30 V | 8-SO | Over Temperature, Reverse Polarity | 3.9 mm | 0.154 in | ||
Analog Devices LT1129IS8#PBF | 70 µA | Enable | 700 mA | 3.8 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | 8-SOIC | Positive | 30 V | 8-SO | Over Temperature, Reverse Polarity | 3.9 mm | 0.154 in | Adjustable | 30 V | |
Analog Devices LT1129IQ-3.3#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129IS8-5#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | 8-SOIC | Positive | 30 V | 8-SO | Over Temperature, Reverse Polarity | 3.9 mm | 0.154 in | ||
Analog Devices LT1129CT-5#06PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 5 V | Through Hole | 1 | 0.7 V | 64 dB | 0 °C | 125 °C | TO-220-5 | Positive | 30 V | TO-220-5 Flow 6 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129MPST-3.3#PBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | -55 °C | 125 °C | TO-261-4, TO-261AA | Positive | 30 V | SOT-223-3 | Over Temperature, Reverse Polarity | ||||
Analog Devices LT1129IQ | 70 µA | Enable | 700 mA | 3.8 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | D2PAK (5 Leads + Tab), TO-263-6, TO-263BA | Positive | 30 V | DDPAK-5 | Over Temperature, Reverse Polarity | Adjustable | 30 V | |||
Analog Devices LT1129IS8#TRPBF | 70 µA | Enable | 700 mA | 3.8 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | 8-SOIC | Positive | 30 V | 8-SO | Over Temperature, Reverse Polarity | 3.9 mm | 0.154 in | Adjustable | 30 V | |
Analog Devices LT1129IS8-3.3#TRPBF | 70 µA | Enable | 700 mA | 1.81 mOhm | 3.3 V | Surface Mount | 1 | 0.7 V | 64 dB | -40 °C | 125 °C | 8-SOIC | Positive | 30 V | 8-SO | Over Temperature, Reverse Polarity | 3.9 mm | 0.154 in |
Description
General part information
LT1129 Series
The LT1129/LT1129-3.3/LT1129-5 are micropower low dropout regulators with shutdown. The devices are capable of supplying 700mA of output current with a dropout voltage of 400mV at maximum output. Designed for use in battery-powered systems, the low quiescent current, 50μA operating and 16μA in shutdown, make them an ideal choice. The quiescent current does not rise in dropout as it does with many other low dropout PNP regulators.Other features of the LT1129/LT1129-3.3/LT1129-5 include the ability to operate with small output capacitors. They are stable with only 3.3μF on the output while most older devices require between 10μF and 100μF for stability. Also the input may be connected to ground or a reverse voltage without reverse current flow from output to input. This makes the LT1129/LT1129-3.3/LT1129-5 ideal for backup power situations where the output is held high and the input is at ground or reversed. Under these conditions, only 16μA will flow from the output pin to ground. The devices are available in 5-lead TO-220, 5-lead DD-Pak and 3-lead SOT-223 packages.ApplicationsLow Current RegulatorRegulator for Battery-Powered SystemsPost Regulator for Switching Supplies5V to 3.3V Logic Regulator
Documents
Technical documentation and resources