LT1529 - 3A Low Dropout Regulators with Micropower Quiescent Current and Shutdown
Other features of the LT1529 /LT1529-3.3/LT1529-5 include the ability to operate with small output capacitors. They are stable with 22µF on the output while most older devices require up to 100µF for stability. Small ceramic capacitors can be used, enhancing manufacturabiltiy. 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 LT1529/LT1529-3.3/LT1529-5 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 and 5-lead DD packages.
Features- Dropout Voltage: 0.6V at IOUT = 3A
- Output Current: 3A
- Quiescent Current: 50µA
- No Protection Diodes Needed
- Adjustable Output from 3.8V to 14V
- 3.3V and 5V Fixed Output Voltages
- Controlled Quiescent Current in Dropout
- Shutdown IQ = 16µA
- Stable with 22µF Output Capacitor
- Reverse Battery Protection
- No Reverse Current
- Thermal Limiting
Typical Application
 | Applications- High Efficiency Regulator
- Regulator for Battery-Powered Systems
- Post Regulator for Switching Supplies
- 5V to 3.3V Logic Regulator
Packaging
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Order Information
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
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| LT1529CQ-3.3#PBF | DDPAK-5 | C | $4.21 | $3.30 |
| LT1529CQ-3.3#TRPBF | DDPAK-5 | C | | $3.42 |
| LT1529CQ-5#PBF | DDPAK-5 | C | $4.21 | $3.30 |
| LT1529CQ-5#TRPBF | DDPAK-5 | C | | $3.42 |
| LT1529CQ#PBF | DDPAK-5 | C | $4.21 | $3.30 |
| LT1529CQ#TRPBF | DDPAK-5 | C | | $3.42 |
| LT1529CT-3.3#06PBF | TO-220 | C | $3.86 | $3.00 |
| LT1529CT-3.3#PBF | TO-220 | C | $3.86 | $3.00 |
| LT1529CT-5#06PBF | TO-220 | C | $3.86 | $3.00 |
| LT1529CT-5#30PBF | TO-220 | C | $4.36 | $3.45 |
| LT1529CT-5#PBF | TO-220 | C | $3.86 | $3.00 |
| LT1529CT#06PBF | TO-220 | C | $3.86 | $3.00 |
| LT1529CT#PBF | TO-220 | C | $3.86 | $3.00 |
| LT1529IQ-3.3#PBF | DDPAK-5 | I | $4.79 | $3.80 |
| LT1529IQ-3.3#TRPBF | DDPAK-5 | I | | $3.92 |
| LT1529IQ-5#PBF | DDPAK-5 | I | $4.79 | $3.80 |
| LT1529IQ-5#TRPBF | DDPAK-5 | I | | $3.92 |
| LT1529IQ#PBF | DDPAK-5 | I | $4.79 | $3.80 |
| LT1529IQ#TRPBF | DDPAK-5 | I | | $3.92 |
| LT1529IT-3.3#PBF | TO-220 | I | $4.36 | $3.45 |
| LT1529IT-5#PBF | TO-220 | I | $4.36 | $3.45 |
| LT1529IT#06PBF | TO-220 | I | $4.10 | $3.45 |
| LT1529IT#PBF | TO-220 | I | $4.36 | $3.45 |
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