Overview
The LT8608IMSE#PBF from Analog Devices Inc. is a high-performance synchronous step-down switching regulator designed to meet the stringent power management needs of modern electronic systems. This regulator boasts a wide input voltage range of 3V to 42V and can deliver a continuous output current of up to 1.5A, making it suitable for various applications in automotive, industrial, and telecom sectors. The device features an ultralow quiescent current of 2.5µA, which is crucial for systems requiring low standby power. Its high-efficiency 42V switch and synchronous rectification topology enable efficiencies of up to 92%, minimizing power dissipation and ensuring high performance.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Function | Step-Down | |
| Output Configuration | Positive | |
| Topology | Buck | |
| 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 | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad |
Key Features
- Wide input voltage range of 3V to 42V
- Integrated 1.5A, 42V switch with low VCESAT of 250mV at 1A (VIN = 12V)
- Ultralow quiescent current of 2.5µA
- High efficiency up to 92% with synchronous rectification topology
- Low ripple Burst Mode operation with output ripple below 10mV
- Internal compensation with peak current mode topology for fast transient response and good loop stability
- EN/UV pin with accurate 1V threshold for VIN undervoltage lockout or shutdown
- PG flag to indicate when VOUT is within ±8.5% of the programmed output voltage and fault conditions
- SYNC pin for synchronization to an external clock or selection of Burst Mode operation (MSOP package)
- TR/SS pin for output tracking and soft-start control (MSOP package)
- Spread Spectrum Frequency Modulation for low EMI
- Allows use of small inductors
- Low dropout voltage
- Fast minimum switch-on time of 35ns
Applications
- Automotive systems
- Industrial equipment
- Telecom devices
- Low power consumption devices requiring high efficiency
- Systems needing low standby power
Q & A
- What is the input voltage range of the LT8608IMSE?
The input voltage range is from 3V to 42V.
- What is the maximum continuous output current of the LT8608IMSE?
The maximum continuous output current is 1.5A.
- What is the quiescent current of the LT8608IMSE?
The quiescent current is 2.5µA.
- What is the efficiency of the LT8608IMSE?
The efficiency can be up to 92%.
- Does the LT8608IMSE support synchronous rectification?
Yes, it supports synchronous rectification.
- What is the operating temperature range of the LT8608IMSE?
The operating temperature range is -40°C to 125°C (TJ).
- What package options are available for the LT8608IMSE?
The package options include 10-TFSOP and 10-MSOP (0.118", 3.00mm Width) Exposed Pad.
- Does the LT8608IMSE have a SYNC pin for external clock synchronization?
Yes, the MSOP package includes a SYNC pin for synchronization to an external clock or selection of Burst Mode operation.
- What is the purpose of the TR/SS pin in the LT8608IMSE?
The TR/SS pin allows user control of output voltage ramp rate during start-up and tracking.
- Does the LT8608IMSE support Spread Spectrum Frequency Modulation?
Yes, it supports Spread Spectrum Frequency Modulation for low EMI.
