Datasheet > MAX25208

MAX25208

更新时间： 2024-10-29 02:49:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
30页	1108K
描述
Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7Î¼A IQ and Optional Bypass Mode

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MAX25208 数据手册

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MAX25206/MAX25207/

MAX25208

Versatile Automotive 60V/70V 2.2MHz Buck

Controller with 7µA I and Optional Bypass

Mode

General Description

Benefits and Features

The MAX25206/MAX25207/MAX25208 are automotive

● Meets Stringent Automotive OEM Module Power

Consumption and Performance Specifications

• 7µA Quiescent Current in Skip Mode

• Fixed 5.0V/3.3V or Adjustable 0.7V to 20V Output

• ±1.5% Output-Voltage Accuracy for 5V Fixed

Setting

2.2MHz synchronous step-down controllers with 7μA I .

These devices operate with an input voltage supply from

3.5V to 60V (MAX25206/MAX25207) and 70V

(MAX25208). They can operate in drop-out condition by

running at 99% (typ) duty cycle. These controllers are in-

tended for applications with mid- to high-power require-

ments that operate at a wide input voltage range such

as during automotive cold-crank or engine stop-start con-

ditions. The MAX25207 has an optional bypass mode,

which allows 100% high-side switch on until step-down

function is needed during automotive transients.

● Enables Crank-Ready Designs

• Wide Input Supply Range from 3.5V to 60V/70V

● EMI Reduction Features Reduce Interference with

Sensitive Radio Bands without Sacrificing Wide Input

Voltage Range

• 50ns (typ) Minimum On-Time Allows Skip-Free

Operation for 3.3V Output from Car Battery at

2.2MHz

The MAX25206/MAX25207/MAX25208 step-down con-

trollers operate at a frequency up to 2.2MHz to allow small

external components, reduced output ripple, and to elim-

inate AM band interference. The switching frequency is

resistor adjustable (220 kHz to 2200 kHz). SYNC input

programmability enables three frequency modes for opti-

mized performance: forced fixed-frequency operation (FP-

WM), skip mode with ultra-low quiescent current, and syn-

chronization to an external clock. The IC also provides

SYNCOUT output to enable two controllers to operate

in parallel. The MAX25206/MAX25207/MAX25208 have a

pin-selectable spread-spectrum option for frequency mod-

ulation to minimize EMI.

• Spread-Spectrum Option

• Frequency-Synchronization Input

• Resistor-Programmable Frequency Between

220kHz and 2.2MHz

● Integration and Thermally Enhanced Packages Save

Board Space and Cost

• 2.2MHz Step-Down Controller

• 180 Degrees Out-of-Phase SYNCOUT Output for

Synchronization

• Current-Mode Controller with Forced-Continuous

and Skip Modes

• Thermally Enhanced 20-Pin Side-Wettable (SW)

4mm x 4mm TQFN-EP Package

The MAX25206/MAX25207/MAX25208 feature a PGOOD

monitor and undervoltage lockout. Protection features in-

clude cycle-by-cycle current limit and thermal shutdown.

These controllers are specified for operation over the

-40°C to +125°C automotive temperature range.

● Protection Features Improve System Reliability

• Supply Undervoltage Lockout

• Output Overvoltage and Undervoltage Monitoring

• Overtemperature and Short-Circuit Protection

• -40ºC to +125ºC Grade 1 Automotive Temperature

Range

Applications

● Infotainment Systems

● 48V Systems

● General Purpose Point of Load (POL)

Ordering Information appears at end of datasheet.

19-100800; Rev 0; 8/20

12 3 4 5 6 7...30

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与MAX25208相关器件

型号	品牌	获取价格	描述	数据表
MAX25208ATPA	MAXIM	获取价格	Versatile Automotive 60V/70V 2.2MHz Buck Cont
MAX25210	ADI	获取价格	Automotive Ultra Low Quiescent Current Linear Regulator Family
MAX25220	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer
MAX25220	ADI	获取价格	Automotive 4-Channel TFT-LCD Power Supplies with VCOM Buffer
MAX25220ATJ	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer
MAX25220ATV	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer
MAX25220ATVY	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer
MAX25221	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer
MAX25221	ADI	获取价格	Automotive 4-Channel TFT-LCD Power Supplies with VCOM Buffer
MAX25221ATJ	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer

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