Overview
The LT8608IDC#TRMPBF is a high-efficiency, high-speed synchronous monolithic step-down switching regulator produced by Analog Devices, Inc. This compact regulator is designed to deliver 1.5A of continuous current and operates over a wide input voltage range of 3V to 42V. It features low ripple burst mode operation, which ensures high efficiency even at very low output currents, with output ripple typically below 10mV. The device is packaged in an 8-lead DFN (2x2) exposed pad package, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Description |
|---|---|
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3V |
| Voltage - Input (Max) | 42V |
| Voltage - Output (Min/Fixed) | 0.778V |
| Voltage - Output (Max) | 42V |
| Current - Output | 1.5A |
| Frequency - Switching | 200kHz ~ 2MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 8-WFDFN Exposed Pad |
| Supplier Device Package | 8-DFN (2x2) |
Key Features
- High Efficiency: The LT8608IDC#TRMPBF features low ripple burst mode operation, ensuring high efficiency even at very low output currents, with output ripple typically below 10mV.
- Wide Input Voltage Range: Operates over a wide input voltage range of 3V to 42V.
- Adjustable Output Voltage: The output voltage is adjustable from 0.778V to 42V.
- Internal Compensation: Uses internal compensation with peak current mode topology, allowing for the use of small inductors and resulting in fast transient response and good loop stability.
- Low Quiescent Current: Consumes only 1.7µA of quiescent current.
- EN/UV Pin: Features an accurate 1V threshold and can be utilized to program VIN undervoltage lockout or to shut down the LT8608.
- PG Flag: Signals when VOUT is within ±8.5% of the programmed output voltage as well as fault conditions.
Applications
- General-Purpose Step-Down Applications: Suitable for various general-purpose step-down applications due to its high efficiency and adjustable output voltage.
- Low EMI Step-Down Applications: Ideal for applications requiring low electromagnetic interference (EMI) due to its low ripple burst mode operation.
- Automotive Applications: Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications.
Q & A
- What is the input voltage range of the LT8608IDC#TRMPBF?
The input voltage range is from 3V to 42V.
- What is the maximum output current of the LT8608IDC#TRMPBF?
The maximum output current is 1.5A.
- What is the switching frequency range of the LT8608IDC#TRMPBF?
The switching frequency range is from 200kHz to 2MHz.
- Does the LT8608IDC#TRMPBF support synchronous rectification?
Yes, it supports synchronous rectification.
- What is the operating temperature range of the LT8608IDC#TRMPBF?
The operating temperature range is from -40°C to 125°C (TJ).
- What package type is the LT8608IDC#TRMPBF available in?
The device is packaged in an 8-WFDFN Exposed Pad package.
- Does the LT8608IDC#TRMPBF have a low quiescent current?
Yes, it consumes only 1.7µA of quiescent current.
- What is the purpose of the EN/UV pin on the LT8608IDC#TRMPBF?
The EN/UV pin features an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut down the LT8608.
- What does the PG flag indicate on the LT8608IDC#TRMPBF?
The PG flag signals when VOUT is within ±8.5% of the programmed output voltage as well as fault conditions.
- Is the LT8608IDC#TRMPBF suitable for automotive applications?
Yes, versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications.
