LT3045 20 V 500 mA Ultra-Low Noise LDO Regulator Linear Technology PMIC for noise sensitive power supplies found in instrumentation, test, and medical applications
Linear Technology/Analog Devices' LT3045 is a 20 V, 500 mA low dropout (LDO) regulator. This regulator features ultra-low noise and ultra-high PSRR architecture for powering noise sensitive applications. Designed as a precision current reference followed by a high-performance voltage buffer, the LT3045 can be easily paralleled to further reduce noise, increase output current and spread heat on the PCB.
The device supplies 500 mA at a typical 260 mV dropout voltage. Operating quiescent current is nominally 2.2 mA and drops to <1 μA in shutdown. This regulator's wide output voltage range (0 V to 15 V) while maintaining unity gain operation provides virtually constant output noise, PSRR, bandwidth and load regulation, independent of the programmed output voltage. Additionally, the regulator features programmable current limit, fast start-up capability, and programmable power good to indicate output voltage regulation.
The LT3045 is stable with a minimum 10 μF ceramic output capacitor. Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback, and thermal limit with hysteresis. The regulator comes in a 10- and 12-pin DFN package as well as 12-pin MOSP package. The LT3045 was designed for noise sensitive power supply applications found in instrumentation, test, and medical designs.
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| Features |
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- Programmable current limit
- Reverse-battery and reverse-current protection
- Fast start-up capability
- Voltage input: 20 V max
- Voltage output: 0 V to 15 V
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- Low dropout voltage: 260 mV
- Current output: 500 mA
- Temperature operating range: -40°C to +125°C/150°C
- Package/case: 10-DFN, 12-DFN, 12-MSOP, 12-MSOP-EP
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| Applications |
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- RF power supplies: PLLs, VCOs, mixers, LNAs, PAs
- Instrumentation
- High speed/high precision data converters
- Medical applications
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- Imaging
- Diagnostics
- Power supplies
- Switching supplies
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Eval Boards
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Manufacturer Part Number |
Description |
Utilized IC / Part |
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View Details |
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DC2491A |
DEMO BOARD FOR LT3045 |
LT3045 |
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DC2593A |
LT3045EDD-1 DEMO BOARD 20V, 500M |
LT3045-1 |
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LT3045 LDO Regulator
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Manufacturer Part Number |
Description |
Operating Temperature |
Mounting Type |
Package / Case |
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View Details |
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LT3045EDD#PBF |
IC REG LINEAR 500MA 10DFN |
-40°C ~ 125°C (TJ) |
Surface Mount |
10-WFDFN Exposed Pad |
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LT3045EMSE#PBF |
IC REG LINEAR 500MA 12MSOP |
-40°C ~ 125°C (TJ) |
Surface Mount |
12-TSSOP (0.118", 3.00mm Width) Exposed Pad |
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LT3045EDD-1#PBF |
IC REG LINEAR 500MA 12DFN |
-40°C ~ 125°C (TJ) |
Surface Mount |
12-WFDFN Exposed Pad |
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LT3045EDD#TRPBF |
IC REG LINEAR 500MA 10DFN |
-40°C ~ 125°C (TJ) |
Surface Mount |
10-WFDFN Exposed Pad |
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LT3045EMSE-1#PBF |
IC REG LINEAR 500MA 12MSOP |
-40°C ~ 125°C (TJ) |
Surface Mount |
12-TSSOP (0.118", 3.00mm Width) Exposed Pad |
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