LM25088 - 42V 宽输入电压非同步降压控制器

LM25088是TI德州仪器公司的一款控制器（外部开关）产品，LM25088是42V 宽输入电压非同步降压控制器，本站介绍了LM25088的封装应用图解、特点和优点、功能等，并给出了与LM25088相关的TI元器件型号供参考。

LM25088 - 42V 宽输入电压非同步降压控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品特性

LM25088Q is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified (-40°C to +125°C Operating Junction Temperature)
Emulated Current Mode Control
Drives External High-Side N-Channel MOSFET
Ultra-Wide Input Voltage Range from 4.5V to 42V
Low IQ Shutdown and Standby Modes
High Duty Cycle Ratio Feature for Reduced Dropout Voltage
Spread Spectrum EMI Reduction (LM25088-1)
Hiccup Timer for Overload Protection (LM25088-2)
Adjustable Output Voltage from 1.205 V with 1.5% Feedback Reference Accuracy
Wide Bandwidth Error Amplifier
Single Resistor Oscillator Frequency Setting
Oscillator Synchronization Capability
Programmable Soft-Start
High Voltage, Low Dropout Bias Regulator
Thermal Shutdown Protection
Package: HTSSOP 16-Pin

产品应用

Automotive Infotainment
Automotive USB Accessory Adapters
Industrial DC-DC Bias and Motor Drivers

产品说明

The LM25088 high voltage non-synchronous buck controller features all the necessary functions to implement an efficient high voltage buck converter using a minimum number of external components. The LM25088 can be configured to operate over an ultra-wide input voltage range of 4.5 V to 42 V. This easy to use controller includes a level shifted gate driver capable of controlling an external N-channel buck switch. The control method is based upon peak current mode control utilizing an emulated current ramp. 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/low output voltage applications. The LM25088 switching frequency is programmable from 50 kHz to 1 MHz.

The LM25088 is available in two versions: The LM25088-1 provides a +/-5% frequency dithering function to reduce the conducted and radiated EMI, while the LM25088-2 provides a versatile restart timer for overload protection. Additional features include a low dropout bias regulator, tri-level enable input to control shutdown and standby modes, soft-start and oscillator synchronization capability. The device is available in a thermally enhanced HTSSOP-16 pin package.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM25088	HTSSOP (16)	5.00 mm × 4.40 mm
LM25088-Q1	HTSSOP (16)	5.00 mm × 4.40 mm

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