LM5009 - 150mA、100V 宽输入电压降压开关稳压器

LM5009是TI德州仪器公司的一款转换器（集成开关）产品，LM5009是150mA、100V 宽输入电压降压开关稳压器，本站介绍了LM5009的封装应用图解、特点和优点、功能等，并给出了与LM5009相关的TI元器件型号供参考。

LM5009 - 150mA、100V 宽输入电压降压开关稳压器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Integrated N-Channel MOSFET
150-mA Output Current Capability
Ultra-Fast Transient Response
No Loop Compensation Required
VIN Feed-Forward Provides Constant Operating Frequency
Switching Frequency Can Exceed 600 kHz
Highly Efficient Operation
2% Accurate 2.5-V Feedback From –40°C to +125°C
Internal Startup Regulator
Intelligent Current Limit Protection
External Shutdown Control
Thermal Shutdown
8-Pin VSSOP and Thermally-Enhanced 8-Pin WSON Packages

产品应用

Heat Sink Eliminator for Classic Linear Regulator Applications
12-V, 24-V, 36-V, and 48-V Rectified AC Systems
42-V Automotive
Non-Isolated AC Mains Charge-Coupled Supplies
LED Current Source

产品说明

The LM5009 step-down switching regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator. This device is capable of driving a 150-mA load current from a 9.5-V to 95-V input source. The switching frequency can exceed 600 kHz, depending on the input and output voltages. The output voltage can be set from 2.5 V to 85 V. This high-voltage regulator contains an N-channel buck switch and an internal startup regulator. The device is easy to implement and is provided in 8-pin VSSOP and thermally-enhanced, 8-pin WSON packages. The LM5009 is a well-suited alternative to a high-voltage monolithic or discrete linear solution where the power loss becomes unacceptable. The regulator operation is based on a control scheme using an on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant over load and input voltage variations. The control scheme requires no loop compensation, resulting in an ultrafast transient response. An intelligent current limit is implemented with forced off-time that is inversely proportional to VOUT. This scheme ensures short-circuit protection and provides minimum foldback. Other features include thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout, and maximum duty cycle limiter.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM5009	VSSOP (8)	3.00 mm × 3.00 mm
LM5009	WSON (8)	4.00 mm × 4.00 mm

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