Datasheet > MIC21LV33

MIC21LV33

更新时间： 2024-09-14 14:52:39

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
52页	3840K
描述
The MIC21LV33 is a constant on-time, dual phase synchronous buck controller featuring a unique ada

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MIC21LV33 数据手册

MIC21LV33

36V Dual Phase, Advanced COT Buck Controller with

HyperLight Load^®and Phase Shedding

Features

General Description

• Input Voltage Range: 4.5V to 36V

The MIC21LV33 is a constant on-time, dual phase,

synchronous buck controller featuring a unique adaptive

on-time control architecture with HyperLight Load^®and

phase shedding features enabled. The MIC21LV33

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 FSB pin. The device

operates with programmable 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 MIC21LV33 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

• Ripple Injection from Third Node Allows Greater

than 50% Duty Cycles

• HyperLight Load^®and Automatic Phase Shedding

• Ability to Interface with External MCU

• Accurate Current Balancing Between Phases

• Accurate 180° Phasing of Outputs

• 100 kHz to 1 MHz Switching Frequency per Phase

The MIC21LV33 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, overvoltage discharge, Hiccup mode short-circuit

protection and thermal shutdown.

• High-Voltage Internal 5V LDO for Single-Supply

Operation

• Secondary LDO to Improve System Efficiency

• Supports Start-up to Pre-Bias Output

• Remote Sense Amplifier for Tight Output Regulation

• Droop Feature to Support Adaptive Voltage

Positioning (AVP) for Improved Load

Transient Response

The MIC21LV33 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

Package Type

• External Programmable Soft Start to Reduce

Inrush Current

MIC21LV33

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

• Lossless R_DSONCurrent Sensing with NTC

Temperature Compensation or Resistor Sensing

Method

• Programmable Current Limit and Hiccup Mode

Short-Circuit Protection

DH2

SW2

DL2

• Thermal Shutdown with Hysteresis

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

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

AGND

ILIM

PGND

Applications

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

DS20006512B-page 1

12 3 4 5 6 7...52

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与MIC21LV33相关器件

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MIC2202	MICREL	获取价格	HIGH EFFICIENCY 2MHZ SYNCHRONOUS BUCK CONVERTER 1UP STABLE PWM REGULATOR
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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
MIC2202BMMTR	MICROCHIP	获取价格	Switching Regulator, Voltage-mode, 2.5A, 2200kHz Switching Freq-Max, PDSO10, MSOP-10

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