Product Details
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DESCRIPTION The LT ?1963 series are low dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to <1μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the LT1963 regulators have very low output noise which makes them ideal for sensitive RF supply applications. Output voltage range is from 1.21V to 20V. The LT1963 regulators are stable with output capacitors as low as 10μF. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The devices are available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable device with a 1.21V reference voltage. The LT1963 regulators are available in 5-lead TO-220, DD, 3-lead SOT-223, 8-lead SO, and Exposed Pad 16-lead TSSOP packages. FEATURES ■ Optimized for Fast Transient Response ■ Output Current: 1.5A ■ Dropout Voltage: 340mV ■ Low Noise: 40μVRMS (10Hz to 100kHz) ■ 1mA Quiescent Current ■ No Protection Diodes Needed ■ Controlled Quiescent Current in Dropout ■ Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V ■ Adjustable Output from 1.21V to 20V ■ <1μA Quiescent Current in Shutdown ■ Stable with 10μF Output Capacitor ■ Reverse Battery Protection ■ No Reverse Current ■ Thermal Limiting ■ 5-Lead TO-220, DD, 3-Lead SOT-223, 8-Lead SO and 16-Lead TSSOP Packages APPLICATIONS ■ 3.3V to 2.5V Logic Power Supplies ■ Post Regulator for Switching Supplies |
Product Description
| Type# | Description |
| ANSC PART# | ANSC- LT1963EST-3.3 |
| Ihs Manufacturer | Original |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.55 V |
| Dropout Voltage1-Nom | 0.34 V |
| Input Voltage Absolute-Max | 20 V |
| Input Voltage-Max | 20 V |
| Input Voltage-Min | 3.8 V |
| Length | 6.505 mm |
| Line Regulation-Max | 0.01% |
| Load Regulation-Max | 0.04% |
| Moisture Sensitivity Level | 1 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Number of Terminals | 3 |
| Operating Temperature TJ-Max |
125 °C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.5 A |
| Output Voltage1-Max | 3.4 V |
| Output Voltage1-Min | 3.2 V |
| Output Voltage1-Nom | 3.3 V |
| Package Body Material | PLASTIC/EPOXY |
| Package Code | SOP |
| Package Equivalence Code | SOT-223 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 235 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Seated Height-Max | 1.8 mm |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.3 mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 20 |
| Voltage Tolerance-Max | 3% |
| Width | 3.505 mm |
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