CISSOID CHT-STA4853B-TDFP16-T

Product Info

General Description

The CHT-VEGA is a high-temperature, high-reliability, 500mA adjustable linear voltage regulator suitable to generate from a standard +5V ±10% source any regulated voltage in the range +1.2V to +3.3V. Its typical operation junction temperature ranges from -55°C to +225°C and can possibly go outside that range with some derating of the performance. The regulator is self-protected with a built-in over-current limitation and a thermal protection, the later becoming effective in the range 250°C to 300°C. CHT-VEGA brings unique benefits in applications where the ambient or operating temperature is high and above the temperature supported by traditional semiconductors, or in applications that run in standard 125°C or 150°C, possibly 175°C but that require extended reliability: CHTVEGA brings at least an order of magnitude in lifetime compared to traditional silicon solutions. It allows as well accelerated aging of the systems for qualification purposes as the device can support extreme temperatures.

The circuit is stable throughout the whole temperature range and only requires an external output capacitor and a 2-resistor bridge for feedback. The IC features a chipenable (CE active low) input signal allowing placing the circuit in low-power, disable mode. The output voltage is adjustable by the external resistive feedback.

The CHT-VEGA is a one-die solution, available in a tiny ceramic package TDFP16 for applications where small PCB footprint is critical. The TDFP package is an SMD solution with leads, available by default in 16-pin.

Features

Junction operating temperature from -55°C to 225°C

Input voltage from 4.5V to 5.5V

Output voltage: from 1.2V to 3.3V

Output voltage total accuracy: ±5%1

Output current: 500mA max

Line regulation: -0.2% typ

Load regulation: -2%/A typ

Cout: 1 to 10 µF ceramic low ESR

Input ripple rejection: 67dB typ (@ 100Hz)

Quiescent current (no load, Chip Enable active, 225°C): 1 mA typ.

Stand-by current (no load, Chip Enable inactive, 225°C): 10 µA typ.

Thermal shutdown: Active in the range 250°C to 300°C

Current limitation: 1.15A (typ)

Latch-up free

Available in TDFP16 (other packages: contact CISSOID)

Validated at 225°C for 5000 hours (and still on-going)

Applications

Regulated power supply in down-hole, aerospace and industrial systems.