LM25005 Series

7-42V Wide Vin, 2.5A, Current Mode Non-Synchronous Buck Regulator

Catalog

7-42V Wide Vin, 2.5A, Current Mode Non-Synchronous Buck Regulator

Part	Voltage - Output (Max)	Package / Case	Package / Case [custom]	Package / Case	Mounting Type	Current - Output	Voltage - Input (Max) [Max]	Voltage - Output (Min/Fixed)	Output Type	Number of Outputs	Function	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Output Configuration	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Min) [Min]
Texas Instruments LM25005MH/NOPB	37 V	20-PowerTSSOP	4.4 mm	0.173 in	Surface Mount	2.5 A	42 V	1.225 V	Adjustable	1	Step-Down	500 kHz	50 kHz	20-HTSSOP	Positive	Buck	-40 °C	125 ¯C	7 V
Texas Instruments LM25005MH	37 V	20-PowerTSSOP	4.4 mm	0.173 in	Surface Mount	2.5 A	42 V	1.225 V	Adjustable	1	Step-Down	500 kHz	50 kHz	20-HTSSOP	Positive	Buck	-40 °C	125 ¯C	7 V
Texas Instruments LM25005MHX	37 V	20-PowerTSSOP	4.4 mm	0.173 in	Surface Mount	2.5 A	42 V	1.225 V	Adjustable	1	Step-Down	500 kHz	50 kHz	20-HTSSOP	Positive	Buck	-40 °C	125 ¯C	7 V
Texas Instruments LM25005MHX/NOPB	37 V	20-PowerTSSOP	4.4 mm	0.173 in	Surface Mount	2.5 A	42 V	1.225 V	Adjustable	1	Step-Down	500 kHz	50 kHz	20-HTSSOP	Positive	Buck	-40 °C	125 ¯C	7 V

Catalog

7-42V Wide Vin, 2.5A, Current Mode Non-Synchronous Buck Regulator

Key Features

• Integrated 42V, 160mΩ N-Channel MOSFETUltra-Wide Input Voltage Range from 7V to 42VInternal Bias RegulatorAdjustable Output Voltage from 1.225V1.5% Feedback Reference AccuracyCurrent Mode Control with Emulated Inductor Current RampSingle Resistor Oscillator Frequency SettingOscillator Synchronization InputProgrammable Soft-StartShutdown / Standby InputWide Bandwidth Error AmplifierThermal ShutdownAll trademarks are the property of their respective owners.Integrated 42V, 160mΩ N-Channel MOSFETUltra-Wide Input Voltage Range from 7V to 42VInternal Bias RegulatorAdjustable Output Voltage from 1.225V1.5% Feedback Reference AccuracyCurrent Mode Control with Emulated Inductor Current RampSingle Resistor Oscillator Frequency SettingOscillator Synchronization InputProgrammable Soft-StartShutdown / Standby InputWide Bandwidth Error AmplifierThermal ShutdownAll trademarks are the property of their respective owners.

Description

The LM25005 switching regulator features all of the functions necessary to implement an efficient, high voltage buck regulator using a minimum of external components. This easy to use regulator includes a 42V, 160mΩ, N-channel MOSFET, with an output current capability of 2.5 Amps. The regulator control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line voltage feed-forward, cycle-by-cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The operating frequency is programmable from 50kHz to 500kHz. An oscillator synchronization pin allows multiple LM25005 regulators to self-synchronize or to be synchronized to an external clock. Additional protection features include: current limit, thermal shutdown and remote shutdown capability. The device is available in a power enhanced HTSSOP package featuring an exposed die attach pad to aid thermal dissipation. The LM25005 switching regulator features all of the functions necessary to implement an efficient, high voltage buck regulator using a minimum of external components. This easy to use regulator includes a 42V, 160mΩ, N-channel MOSFET, with an output current capability of 2.5 Amps. The regulator control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line voltage feed-forward, cycle-by-cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The operating frequency is programmable from 50kHz to 500kHz. An oscillator synchronization pin allows multiple LM25005 regulators to self-synchronize or to be synchronized to an external clock. Additional protection features include: current limit, thermal shutdown and remote shutdown capability. The device is available in a power enhanced HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.