MAX1631AEAI+T

更新时间： 2024-11-11 13:00:23

品牌	Logo	应用领域
美信 - MAXIM		电脑控制器
页数	文件大小	规格书
28页	240K
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MAX1631AEAI+T 数据手册

19-0480; Rev 3; 4/97

Mu lt i-Ou t p u t , Lo w -No is e P o w e r-S u p p ly

Co n t ro lle rs fo r No t e b o o k Co m p u t e rs

0–MAX1635

________________Ge n e ra l De s c rip t io n

____________________________Fe a t u re s

♦ 96% Efficiency

♦ +4.2V to +30V Input Range

The MAX1630–MAX1635 are buck-topology, step-down,

switch-mode, power-supply controllers that generate

logic-supply voltages in battery-powered systems. These

high-performance, dual/triple-output devices include on-

board power-up sequencing, power-good signaling with

delay, digital soft-start, secondary winding control, low-

dropout circuitry, internal frequency-compensation net-

works, and automatic bootstrapping.

♦ 2.5V to 5.5V Dual Adjustable Outputs

♦ Selectable 3.3V and 5V Fixed or Adjustable

Outputs (Dual Mode™)

♦ 12V Linear Regulator

♦ Adjustable Secondary Feedback

(MAX1631/MAX1634)

Up to 96% efficiency is achieved through synchronous

rectification and Maxim’s proprietary Idle Mode™ control

scheme. Efficiency is greater than 80% over a 1000:1

load-current range, which extends battery life in system-

suspend or standby mode. Excellent dynamic response

corrects output load transients caused by the latest

dynamic-clock CPUs within five 300kHz clock cycles.

Strong 1A on-board gate drivers ensure fast external

N-channel MOSFET switching.

♦ 5V/50mA Linear Regulator Output

♦ Precision 2.5V Reference Output

♦ Programmable Power-Up Sequencing

♦ Power-Good (RESET) Output

♦ Output Overvoltage Protection

(MAX1630/MAX1631/MAX1632)

♦ Output Undervoltage Shutdown

(MAX1630/MAX1631/MAX1632)

These devices feature a logic-controlled and synchroniz-

able, fixed-frequency, pulse-width-modulation (PWM)

operating mode. This reduces noise and RF interference

in sensitive mobile communications and pen-entry appli-

cations. Asserting the SKIP pin enables fixed-frequency

mode, for lowest noise under all load conditions.

♦ 200kHz/300kHz Low-Noise, Fixed-Frequency

Operation

♦ Low-Dropout, 99% Duty-Factor Operation

♦ 2.5mW Typical Quiescent Power (+12V input, both

SMPSs on)

♦ 4µA Typical Shutdown Current

♦ 28-Pin SSOP Package

The MAX1630–MAX1635 include two PWM regulators,

adjustable from 2.5V to 5.5V with fixed 5.0V and 3.3V

modes. All these devices include secondary feedback

re g ula tion, a nd the MAX1630/MAX1632/MAX1633/

MAX1635 each contain 12V/120mA linear regulators. The

MAX1631/MAX1634 include a secondary feedback input

(SECFB), plus a control pin (STEER) that selects which

PWM (3.3V or 5V) receives the secondary feedback sig-

nal. SECFB provides a method for adjusting the sec -

ondary winding voltage regulation point with an external

resistor divider, and is intended to aid in creating auxiliary

voltages other than fixed 12V.

_______________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

28 SSOP

MAX1630CAI

MAX1630EAI

-40°C to +85°C

28 SSOP

Ordering Information continued on last page.

________________Fu n c t io n a l Dia g ra m

The MAX1630/MAX1631/MAX1632 contain internal out-

put overvoltage and undervoltage protection features.

INPUT

+12V

+5V

+5V (RTC)

________________________Ap p lic a t io n s

Notebook and Subnotebook Computers

PDAs and Mobile Communicators

LINEAR

12V

LINEAR

Desktop CPU Local DC-DC Converters

+3.3V

3.3V

SMPS

Pin Configurations and Selector Guide appear at end of data

sheet.

POWER-UP POWER-

SEQUENCE GOOD

ON/OFF

RESET

Idle Mode and Dual Mode are trademarks of Maxim Integrated

Products.

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 408-737-7600 ext. 3468.

12 3 4 5 6 7...28

中文翻译

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MAX1631AEAI+T 替代型号

型号	品牌	替代类型	描述	数据表
MAX1631AEAI-T	MAXIM	类似代替	Switching Controller, 0.2A, 330kHz Switching Freq-Max, PDSO28, 5.30 MM, 0.65 MM PITCH, SSO
MAX1631AEAI+	MAXIM	类似代替	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers
MAX1631AEAI	MAXIM	类似代替	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

与MAX1631AEAI+T相关器件

型号	品牌	获取价格	描述	数据表
MAX1631AEAI-T	MAXIM	获取价格	Switching Controller, 0.2A, 330kHz Switching Freq-Max, PDSO28, 5.30 MM, 0.65 MM PITCH, SSO
MAX1631CAI	MAXIM	获取价格	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers
MAX1631CAI+	ROCHESTER	获取价格	DUAL SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, PDSO28, 5.30 MM, 0.65 MM PITCH, SSOP
MAX1631CAI+T	MAXIM	获取价格	Switching Controller, Current-mode, 300kHz Switching Freq-Max, BICMOS, PDSO28, 5.30 MM, 0.
MAX1631EAI	MAXIM	获取价格	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers
MAX1631EAI-T	MAXIM	获取价格	Switching Controller, Current-mode, 300kHz Switching Freq-Max, BICMOS, PDSO28, 5.30 MM, 0.
MAX1632	MAXIM	获取价格	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers
MAX1632A	MAXIM	获取价格	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers
MAX1632AEAI	MAXIM	获取价格	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers
MAX1632AEAI+	MAXIM	获取价格	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

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