TL2575HV high voltage switching regulator

The TL2575 and TL2575HV devices provide all
the active functions needed for a step-down (buck)
switching regulator in an integrated circuit. They
require four to six external components for operation.
They accept a wide input-voltage range of up to
60 V (TL2575-HV) and are available in fixed output
voltages of 3.3 V, 5 V, 12 V, 15 V, or an adjustableoutput version. The TL2575 and TL2575HV devices
have an integrated switch capable of delivering 1
A of load current, with excellent line and load
regulation. The device also offers internal frequency
compensation, a fixed-frequency oscillator, cycle-bycycle current limiting, and thermal shutdown. In
addition, a manual shutdown is available through the
external ON/OFF pin.
Features
• Fixed 3.3-V, 5-V, 12-V, and 15-V options with
±5% regulation (maximum) over line, load, and
temperature conditions
• Adjustable option with a range of 1.23 V to
37 V (57 V for HV version) and ±4% regulation
(maximum) over line, load, and temperature
conditions
• Specified 1-A output current
• Wide input voltage range
- 4.75 V to 40 V (60 V for HV version)
• Requires only four external components (fixed
versions) and uses readily available standard
inductors
• 52-kHz (typical) fixed-frequency internal oscillator
• TTL shutdown capability with 50-μA (typical)
standby current
• High efficiency
- As high as 88% (typical)
• Thermal shutdown and current-limit protection with
cycle-by-cycle current limiting

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