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參數資料
| 型號： | MAX786REAI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | Dual-Output Power-Supply Controller for Notebook Computers |
| 中文描述： | DUAL SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | 5.30 MM, 0.65 MM PITCH, SSOP-28 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 305K |
| 代理商： | MAX786REAI |
__________________General Description
The MAX786 is a system-engineered power-supply
controller for notebook computers or similar battery-
powered equipment. It provides two high-performance
step-down (buck) pulse-width modulators (PWMs)
for +3.3V and +5V. Other features include dual,
low-dropout, micropower linear regulators for
CMOS/RTC back-up, and two precision low-battery-
detection comparators.
High efficiency (95% at 2A; greater than 80% at loads
from 5mA to 3A) is achieved through synchronous recti-
fication and PWM operation at heavy loads, and
Idle Mode
TM operation at light loads. The MAX786 uses
physically small components, thanks to high operating
frequencies (300kHz/200kHz) and a new current-mode
PWM architecture that allows for output filter capacitors
as small as 30F per ampere of load. Line- and load-
transient responses are terrific, with a high 60kHz unity-
gain crossover frequency allowing output transients to
be corrected within four or five clock cycles. Low sys-
tem cost is achieved through a high level of integration
and the use of low-cost, external N-channel MOSFETs.
Other features include low-noise, fixed-frequency PWM
operation at moderate to heavy loads, and a synchro-
nizable oscillator for noise-sensitive applications such
as electromagnetic pen-based systems and communi-
cating computers. The MAX786 is a monolithic,
BiCMOS IC available in fine-pitch, surface-mount
SSOP packages.
___________________________Applications
Notebook Computers
Portable Data Terminals
Communicating Computers
Pen-Entry Systems
________________________________Features
o Dual PWM Buck Controllers (+3.3V and +5V)
o Two Precision Comparators or Level Translators
o 95% Efficiency
o 420A Quiescent Current, 70A in Standby
(linear regulators alive)
o 25A Shutdown Current (+5V linear alive)
o 5.5V to 30V Input Range
o Small SSOP Package
o Fixed Output Voltages:
3.3V (standard)
3.45V (High-Speed Pentium)
3.6V (PowerPC)
_________________Ordering Information
MAX786
Dual-Output Power-Supply
Controller for Notebook Computers
_______________________________________________________________________
Maxim Integrated Products
1
19-0160; Rev 2; 4/97
_____________________Pin Configuration
28
27
26
25
24
23
22
21
1
2
3
4
5
6
7
8
FB3
DH3
LX3
BST3
D1
ON3
SS3
CS3
TOP VIEW
DL3
V+
VL
FB5
Q1
Q2
VH
D2
20
19
18
17
9
10
11
12
PGND
DL5
BST5
LX5
SHDN
SYNC
REF
GND
SSOP
MAX786
16
15
13
14
DH5
CS5
SS5
ON5
Idle Mode is a trademark of Maxim Integrated Products. Pentium is a trademark of Intel Corp. PowerPC is a trademark of IBM Corp.
________Typical Application Diagram
MAX786
5.5V
TO
30V
SHUTDOWN
POWER
SECTION
POWER-GOOD
LOW-BATTERY WARNING
P
MEMORY
PERIPHERALS
+3.3V
+5V
5V ON/OFF
3.3V ON/OFF
SYNC
SUSPEND POWER
28 SSOP
0°C to +70°C
MAX786RCAI
28 SSOP
0°C to +70°C
MAX786CAI
PIN-PACKAGE
TEMP. RANGE
PART
3.45V
3.3V
VOUT
Ordering Information continued at end of data sheet.
EVALUATION
KIT
INFORMATION
INCLUDED
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX786REAI+ | 制造商:Maxim Integrated Products 功能描述:DUAL-OUTPUT POWER SUPPLY CONTROLLER FOR NOTEBOOK COMPUTERS - Bulk |
| MAX786REAI+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 |
| MAX786REAI-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 |
| MAX786SCAI | 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 |
| MAX786SCAI+ | 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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