Overview
The LT1963AEQ-1.5#TRPBF is a low dropout (LDO) voltage regulator produced by Analog Devices Inc. This device is part of the LT1963A series, which is optimized for fast transient response and low noise, making it ideal for sensitive RF supply applications. The LT1963AEQ-1.5#TRPBF can supply up to 1.5A of output current with a dropout voltage of 340mV. It features a controlled quiescent current that does not rise in dropout, ensuring stable operation under various load conditions.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output Current | 1.5 | A | |||
| Dropout Voltage | ILOAD = 1.5A | 0.34 | 0.45 | 0.55 | V |
| Quiescent Current | 1 | mA | |||
| Quiescent Current in Shutdown | VIN = 6V, VSHDN = 0V | 0.01 | 1 | µA | |
| Output Voltage | VIN = 2.21V, ILOAD = 1mA | 1.477 | 1.500 | 1.523 | V |
| Minimum Input Voltage | ILOAD = 1.5A | 1.9 | 2.1 | 2.5 | V |
| Ripple Rejection | VIN – VOUT = 1.5V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 0.75A | 55 | 63 | dB | |
| Current Limit | VIN = 7V, VOUT = 0V | 1.6 | 2 | A | |
| Operating Temperature Range | –40 | 125 | °C | ||
| Package Type | 5-Lead DD-Pak |
Key Features
- Optimized for fast transient response
- Output current: 1.5A
- Dropout voltage: 340mV
- Low noise: 40µVRMS (10Hz to 100kHz)
- Quiescent current: 1mA, dropping to <1µA in shutdown
- 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
- Stable with 10µF output capacitor and ceramic capacitors
- Internal protection circuitry: reverse battery protection, current limiting, thermal limiting, and reverse current protection
- AEC-Q100 qualified for automotive applications
Applications
- Sensitive RF supply applications
- 3.3V to 2.5V logic power supplies
- Post regulator for switching supplies
- Automotive applications (AEC-Q100 qualified)
Q & A
- What is the maximum output current of the LT1963AEQ-1.5#TRPBF?
The maximum output current is 1.5A.
- What is the dropout voltage of the LT1963AEQ-1.5#TRPBF?
The dropout voltage is 340mV.
- What is the quiescent current of the LT1963AEQ-1.5#TRPBF in normal operation and in shutdown?
The quiescent current is 1mA in normal operation and less than 1µA in shutdown.
- What are the available fixed output voltages for the LT1963A series?
The available fixed output voltages are 1.5V, 1.8V, 2.5V, and 3.3V.
- What is the adjustable output voltage range for the LT1963A series?
The adjustable output voltage range is from 1.21V to 20V.
- What types of capacitors can the LT1963AEQ-1.5#TRPBF be stable with?
The device is stable with 10µF output capacitors and ceramic capacitors.
- What internal protection features does the LT1963AEQ-1.5#TRPBF have?
The device includes reverse battery protection, current limiting, thermal limiting, and reverse current protection.
- Is the LT1963AEQ-1.5#TRPBF suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What are the available package types for the LT1963A series?
The available package types include 5-lead DD-Pak, 3-lead SOT-223, 8-lead SO, and 16-lead TSSOP.
- What is the operating temperature range of the LT1963AEQ-1.5#TRPBF?
The operating temperature range is from –40°C to 125°C.
