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參數資料
| 型號： | MAX1632 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| 中文描述： | 多輸出、低噪聲電源控制器，用于筆記本電腦 |
| 文件頁數： | 1/28頁 |
| 文件大小： | 237K |
| 代理商： | MAX1632 |
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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.
________________General Desc ription
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.
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.
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.
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
regulation, and 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.
The MAX1630/MAX1631/MAX1632 contain internal out-
put overvoltage and undervoltage protection features.
________________________Applic ations
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
Desktop CPU Local DC-DC Converters
____________________________Features
o
96% Efficiency
o
+4.2V to +30V Input Range
o
2.5V to 5.5V Dual Adjustable Outputs
o
Selectable 3.3V and 5V Fixed or Adjustable
Outputs (Dual Mode)
o
12V Linear Regulator
o
Adjustable Secondary Feedback
(MAX1631/MAX1634)
o
5V/50mA Linear Regulator Output
o
Precision 2.5V Reference Output
o
Programmable Power-Up Sequencing
o
Power-Good (RESET) Output
o
Output Overvoltage Protection
(MAX1630/MAX1631/MAX1632)
o
Output Undervoltage Shutdown
(MAX1630/MAX1631/MAX1632)
o
200kHz/300kHz Low-Noise, Fixed-Frequency
Operation
o
Low-Dropout, 99% Duty-Factor Operation
o
2.5mW Typical Quiescent Power (+12V input, both
SMPSs on)
o
4μA Typical Shutdown Current
o
28-Pin SSOP Package
M
Multi-Output, Low-Noise Power-S upply
Controllers for Notebook Computers
________________________________________________________________ Maxim Integrated Products
1
5V
LINEAR
12V
LINEAR
POWER-UP
SEQUENCE
POWER-
GOOD
3.3V
SMPS
5V
SMPS
RESET
ON/OFF
+5V (RTC)
+3.3V
INPUT
+5V
+12V
________________Func tional Diagram
19-0480; Rev 3; 4/97
EVALUATION KIT
AVAILABLE
PART
MAX1630
CAI
MAX1630EAI
Ordering Information continued on last page.
-40°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
28 SSOP
28 SSOP
_______________Ordering Information
Pin Configurations and Selector Guide appear at end of data
sheet.
Idle Mode and Dual Mode are trademarks of Maxim Integrated
Products.
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1632CAI | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| MAX1633CAI | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| MAX1633EAI | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| MAX1634 | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| MAX1634CAI | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1632AEAI | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1632AEAI+ | 功能描述:DC/DC 開關控制器 Multi-Out Low-Noise Power-Supply Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1632AEAI+T | 功能描述:DC/DC 開關控制器 Multi-Out Low-Noise Power-Supply Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1632AEAI-T | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1632CAI | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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