LINEAR LT1963 Series Data Sheet
Summary
These low dropout regulators are high-performance power solutions engineered for stringent applications like sensitive RF circuits and general logic power supplies. The LT1963 series offers fast transient response, ultra-low noise, and stable operation up to 1.5A, along with robust features such as reverse battery protection and minimal quiescent current (<1µA). This comprehensive manual details the electrical characteristics, operational parameters, available package options (including fixed or adjustable outputs), and usage guidelines crucial for designers building dependable and efficient power systems.
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查询LT1963EQ-1.5供应商
LT1963 Series 1.5A, Low Noise,
Fast Transient Response LDO Regulators
FEATURES DESCRIPTIO Optimized for Fast Transient Response The LT®1963 series are low dropout regulators optimized Output Current: 1.5A for fast transient response. The devices are capable of Dropout Voltage: 340m V supplying 1.5A of output current with a dropout voltage of Low Noise: 40µVRMS (10Hz to 100k Hz) 340m V. Operating quiescent current is 1m A, dropping to 1m A Quiescent Current <1µA in shutdown. Quiescent current is well controlled; it No Protection Diodes Needed does not rise in dropout as it does with many other Controlled Quiescent Current in Dropout regulators. In addition to fast transient response, the Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V LT1963 regulators have very low output noise which Adjustable Output from 1.21V to 20V makes them ideal for sensitive RF supply applications. <1µA Quiescent Current in Shutdown
Output voltage range is from 1.21V to 20V. The LT1963
Stable with 10µF Output Capacitor
regulators are stable with output capacitors as low as
DR OP OU VO LT AG (m V)
Reverse Battery Protection
10µF. Internal protection circuitry includes reverse battery
No Reverse Current
protection, current limiting, thermal limiting and reverse
Thermal Limiting
current protection. The devices are available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an APPLICATIO S adjustable device with a 1.21V reference voltage. The LT1963 regulators are available in 5-lead TO-220, DD,
3.3V to 2.5V Logic Power Supplies
3-lead SOT-223 and 8-lead SO packages.
Post Regulator for Switching Supplies
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Dropout Voltage
3.3V to 2.5V Regulator
IN OUT
VIN > 3V 10µF 10µF
LT1963-2.5
SHDN SENSE
1963 TA01
0.4 0.6 0.8 1.0 1.20.2 1.4 1.6 OUTPUT CURRENT (A)
1963 TA02
1963fa
Page Summary Contents For LINEAR LT1963 Series Data Sheet
Manual Details
| Brand | Linear |
|---|---|
| Pages | 17 |
| File Size | 245.96 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What is the maximum output current capability of the LT1963 series?
The device is optimized for a fast transient response with an output current of 1.5A.
Does the LT1963 series require protection diodes?
No, it does not need protection diodes, and internal circuitry includes reverse battery, current limiting, thermal limiting, and reverse current protection.
What is the minimum usable operating temperature for this regulator?
The operating junction temperature range is –45°C to 125°C.
Are there fixed output voltage options available?
Yes, it is available in fixed voltages of 1.5V, 1.8V, 2.5V, and 3.3V, as well as an adjustable version (ADJ).
What are the stability requirements for the LT1963 regulator?
The regulators are stable with output capacitors as low as 10μF.