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Linear Technology Introduces High-Temperature Grade H and High-Reliability MP Grade Devices

May 18, 2023
Linear Technology Introduces High-Temperature Grade H and High-Reliability MP Grade Devices Linear Technology Introduces High-Temperature H-grade (-40°C to 150°C Junction Temperature) and High-Reliability MP Grade (-55°C to 150°C) Versions of the LTC3115-1. The device is 20-pin tolerant. Thermal performance enhanced TSSOP package. The LTC3115-1 is a synchronous buck-boost converter that delivers up to 2A of continuous output current from a single lithium-ion battery, 24V/28V industrial power supply, and up to 40V automotive input.

The LTC3115-1's 2.7V to 40V input and output range provides a regulated output, while the input can be higher, lower, or equal to the regulated output. The low-noise buck-boost topology used in the LTC3115-1 enables continuous jitter-free switching between buck and boost modes, making it ideal for RF and other noise-sensitive applications where these applications must be A low noise constant output voltage is maintained in the input power supply. Up to 95% efficiency extends the runtime of battery-powered systems. The user can set the LTC3115-1's switching frequency from 100kHz to 2MHz and synchronize to an external clock. A proprietary buck-boost PWM circuit ensures low noise and high efficiency while reducing the size of external components. The combination of tiny external components and the TSSOP-20E package form a compact footprint solution.

The H-grade version can operate from -40 ̊C to a maximum junction temperature of 150 ̊C, ensuring proper operation within this temperature range. Similarly, the MP grade version has a working junction temperature range of -55 ̊C to 150 ̊C, guaranteed and tested within this temperature range. The electrical specifications of the H and MP grades are the same as those of the industrial grade. The device is ideal for automotive, industrial and military applications where extreme ambient temperature conditions are required.

Performance Summary: LTC3115H/MP

Wide VIN range: 2.7V to 40V

Wide VOUT range: 2.7V to 40V

1A output current (for VIN ≥ 3.6V, VOUT = 5V)

2A output current (in buck operation mode for VIN ≥ 6V)

Programmable frequency: 100kHz to 2MHz

Synchronize with external clock up to 2MHz

Up to 95% efficiency

No load quiescent current is 30μA in Burst Mode

Ultra-Low Noise Buck-Boost PWM

Internal Soft-Start 3μA Supply Current in Shutdown Mode Programmable Input Undervoltage Lockout Thermally Enhanced 20-Lead TSSOP Package -55 ̊C to 150 ̊C Temperature Range MP Range -40 ̊C to 150 ̊C Temperature Range H level
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