D2596HV
The D2596HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an ADJ output version.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator.
The D2596HV series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the D2596HV are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.
Other features include a guaranteed 卤4% tolerance on output voltage within specified input voltages and output load conditions, and 卤10% on the oscillator frequency. External shutdown is included, featuring typically 50 渭A standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
FEATURES
3.3V, 5V, 12V and adjustable output versions
Guaranteed 3A output current
Adjustable version output voltage range,1.23V to57V±4% max over line and load conditions
150 kHfixed frequency internal oscillator
TTL shutdown capability, low power standby mode
High efficiency
Uses readily available standard inductors
Thermal shutdown and current limit protection
Wide input voltage range up to 60V
Requires only 4 external components
APPLICATIONS
Simple high-efficiency step-down (buck) regulator
On-card switching regulators
Positive to negative converter (Buck-Boost)
Efficient pre-regulator for linear regulators
