LM2501x Regulator with Integrated MOSFETs


TI's 48 V synchronous step-down regulators with integrated high-side and low-side MOSFETs

Texas Instruments' LM25017 (650 mA), LM25018 (325 mA), and LM25019 (100 mA) are 48 V synchronous step-down regulators with integrated high-side and low-side MOSFETs. The constant-on-time (COT) control scheme employed in the LM2501x requires no loop compensation, provides excellent transient response, and enables very-low step-down ratios. The on-time varies inversely with the input voltage, resulting in nearly constant frequency over the input voltage range. A high-voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers.

A peak current-limit circuit protects against overload conditions. The undervoltage lockout (UVLO) circuit allows the input undervoltage threshold and hysteresis to be independently programmed. Other protection features include thermal shutdown and bias-supply undervoltage lockout.

LM25017 Regulator with Integrated MOSFETs

Manufacturer Part Number Description Available Quantity Datasheets
LM25017SDE/NOPB IC REG BUCK ADJ 0.65A 8WSON 836
LM25017MR/NOPB IC REG BUCK ADJ 0.65A 8SOPWRPAD 63

LM25018 Regulator with Integrated MOSFETs

Manufacturer Part Number Description Available Quantity Datasheets
LM25018MR/NOPB IC REG BUCK ADJ 0.325A 8SOPWRPAD 40

LM25019 Regulator with Integrated MOSFETs

Manufacturer Part Number Description Available Quantity Datasheets
LM25019MR/NOPB IC REG BUCK ADJ 0.1A 8SOPWRPAD 333