參數(shù)資料
型號(hào)： MAX786CAI+T
廠商： Maxim Integrated
文件頁數(shù)： 1/20頁
文件大?。?/td> 305K
描述： IC REG QD BCK/LINEAR SYNC 28SSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,000
拓?fù)洌?/td> 降壓（降壓）同步（2），線性（LDO）（2）
功能： 任何功能
輸出數(shù)： 4
頻率 - 開關(guān)： 300kHz，200kHz
電壓/電流 - 輸出 1： 控制器
電壓/電流 - 輸出 2： 控制器
電壓/電流 - 輸出 3： 5V，5mA
帶 LED 驅(qū)動(dòng)器： 無
帶監(jiān)控器： 無
帶序列發(fā)生器： 無
電源電壓： 5.5 V ~ 30 V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 28-SSOP（0.209"，5.30mm 寬）
供應(yīng)商設(shè)備封裝： 28-SSOP
包裝： 帶卷 (TR)
__________________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 30礔 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 420?/SPAN>A Quiescent Current, 70?/SPAN>A in Standby
(linear regulators alive)
o 25?/SPAN>A 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
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
礟
MEMORY
PERIPHERALS
+3.3V
+5V
5V ON/OFF
3.3V ON/OFF
SYNC
SUSPEND POWER
28 SSOP
0癈 to +70癈
MAX786RCAI
28 SSOP
0癈 to +70癈
MAX786CAI
PIN-PACKAGE
TEMP. RANGE
PART
3.45V
3.3V
V
OUT
Ordering Information continued at end of data sheet.
E
V
A
LU
A
T
IO
N
 
K
IT
 
IN
F
O
R
M
A
TI
O
N
 I
NC
L
U
D
E
D
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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參數(shù)描述
MAX786EAI 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX786EAI+ 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX786EAI+T 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX786EAI-T 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX786EVKIT-SO 功能描述:DC/DC 開關(guān)控制器 Dual-Output Power Supply Controller for Notebook Computers RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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