Datasheet Analog Devices LT1970A — Datenblatt

LT1970A
500mA Power Op Amp with
Adjustable Precision Current Limit
Features Description ± 500mA Minimum Output Current
n Independent Adjustment of Source and
Sink Current Limits
n 1% Current Limit Accuracy
n Improved Reactive Load Driving Stability
n Operates with Single or Split Supplies
n Shutdown/Enable Control Input
n Open-Collector Status Flags: Sink Current Limit Source Current Limit Thermal Shutdow Fail-Safe Current Limit and Thermal Shutdow 1.6V/µs Slew Rate
n 3.6MHz Gain-Bandwidth Product
n Specified Temperature Range: –40°C to 85°C
n Available in a 20-Lead TSSOP Package The LT®1970A is a ± 500mA power op amp with precise
externally controlled current limiting. Separate control
voltages program the sourcing and sinking current limit
sense thresholds with 1% accuracy. Output current may
be boosted by adding external power transistors. n The circuit operates with single or split power supplies
from 5V to 36V total supply voltage. In normal operation, the input stage supplies and the output stage supplies are connected (VCC to V+ and VEE to V–). To reduce
power dissipation it is possible to power the output stage
(V+, V–) from independent, lower voltage rails. The amplifier
is unity-gain stable with a 3.6MHz gain-bandwidth product
and slews at 1.6V/µs. The LT1970A can drive capacitive …