Datasheet > MIC21LV32

MIC21LV32

更新时间： 2024-09-14 14:53:07

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
50页	1608K
描述
The MIC21LV32 is an advanced constant on-time, dual phase synchronous buck controller featuring a

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MIC21LV32 数据手册

MIC21LV32

36VDualPhase,AdvancedCOTBuckController

Stackable for Multiphase Operation

Features

General Description

• Input Voltage Range: 4.5V to 36V

The MIC21LV32 is a constant on-time, dual phase

synchronous buck controller featuring a unique adaptive

on-time control architecture with stackable feature up to

eight phases. The MIC21LV32 operates over an input

supply range from 4.5V to 36V and can be used to

supply up to 50A of output current. The output voltage is

adjustable down to 0.6V with an ensured accuracy of

±1% at the FBS pin. The device operates with program-

mable switching frequency from 100 kHz to 1 MHz per

phase.

The Hyper Speed Control^®architecture supports ultra-

fast transient response under medium to heavy loads.

The soft start is also programmable externally with a

capacitor, thus enabling safe start-ups into heavy loads.

The MIC21LV32 has a remote sense amplifier for

accurate output voltage control.

• Input Down to 2V when V_DD= 5V from External

Supply

• Adjustable Output Voltage from 0.6V to 28V

• Adaptive Constant On-Time Control:

- High DeltaV operation

- Any Capacitor™ stable

• 0.6V Internal Reference with ±1% Accuracy

• Novel Ripple Injection Method to Allow Greater

than 50% Duty Cycle Operation

• Operates in CCM, Stackable for Multiphase

Operation up to Eight Phases

• Accurate Current Balancing Between Phases

• Accurate 180° Phasing of Outputs

• 100 kHz to 1 MHz Switching Frequency per Phase

• Secondary LDO to Improve System Efficiency

• Supports Start-up to Pre-bias Output

The MIC21LV32 offers a full suite of protection features

to ensure protection of the IC during Fault conditions.

These include undervoltage lockout to ensure proper

operation, programmable soft start to reduce inrush cur-

rent, Hiccup mode short-circuit protection and thermal

shutdown.

• Remote Sense Amplifier for Tight Output Regulation

• Droop Feature to Support Adaptive Voltage

Positioning (AVP) for Improved Load

Transient Response

The MIC21LV32 is available in a 32-pin 5 mm x 5 mm

VQFN package with a –40°C to +125°C operating

junction temperature range.

• Precision Enable Function for Low Standby Current

• External Programmable Soft Start to Reduce

Inrush Current

• Lossless R_DSONCurrent Sensing with NTC

Temperature Compensation or Resistor Sensing

Method

Package Type

MIC21LV32

32-Pin 5 mm X 5 mm VQFN* (ML)

• Programmable Current Limit and Hiccup Mode

Short-Circuit Protection

• Thermal Shutdown with Hysteresis

• –40°C to +125°C Junction Temperature Range

DH2

SW2

DL2

• Compact Size 5 mm x 5 mm 32-Pin VQFN

Package

AGND

Applications

ILIM

PGND

CSH

• Distributed Power Systems

• Communications/Networking Infrastructure

• Printers, Scanners, Graphic and

Video Cards

• FPGA, CPU, Memory, GPU Core Supplies

Includes Exposed Thermal Pad (EP); see

Table 3-1.



2021-2022 Microchip Technology Inc. and its subsidiaries

DS20006513B-page 1

12 3 4 5 6 7...50

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与MIC21LV32相关器件

型号	品牌	获取价格	描述	数据表
MIC21LV33	MICROCHIP	获取价格	The MIC21LV33 is a constant on-time, dual phase synchronous buck controller featuring a un
MIC2202	MICREL	获取价格	HIGH EFFICIENCY 2MHZ SYNCHRONOUS BUCK CONVERTER 1UP STABLE PWM REGULATOR
MIC2202	MICROCHIP	获取价格	The MIC2202 is a high efficiency, 2MHz PWM synchronous buck regulator. The fast 2MHz ope
MIC2202_07	MICREL	获取价格	High Efficiency 2MHz Synchronous Buck Convert
MIC2202BML	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, 3 X 3 MM, MLF
MIC2202BML	MICREL	获取价格	HIGH EFFICIENCY 2MHZ SYNCHRONOUS BUCK CONVERTER 1UP STABLE PWM REGULATOR
MIC2202BMLTR	MICREL	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, 3 X 3 MM, MLF
MIC2202BMLTR	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, 3 X 3 MM, MLF
MIC2202BMM	MICREL	获取价格	HIGH EFFICIENCY 2MHZ SYNCHRONOUS BUCK CONVERTER 1UP STABLE PWM REGULATOR
MIC2202BMM	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, MSOP-10

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