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參數資料
| 型號： | MAX782CBX |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | Triple-Output Power-Supply Controller for Notebook Computers |
| 中文描述： | DUAL SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO36 |
| 封裝： | PLASTIC, SSOP-36 |
| 文件頁數： | 1/32頁 |
| 文件大小： | 497K |
| 代理商： | MAX782CBX |
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_______________General Desc ription
The MAX782 is a system-engineered power-supply con-
troller 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,
and dual PCMCIA VPP outputs powered by an integral fly-
back winding controller. Other functions include dual, low-
dropout, micropower linear regulators for CMOS/RTC back-
up, and three 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. It uses physically
small components, thanks to high operating frequen-
cies (300kHz/200kHz) and a new current-mode PWM
architecture that allows for output filter capacitors as
small as 30μF per ampere of load. Line- and load-tran-
sient response are terrific, with a high 60kHz unity-gain
crossover frequency allowing output transients to be
corrected within four or five clock cycles. Low system
cost is achieved through a high level of integration and
the use of low-cost, external N-channel MOSFETs. The
integral flyback winding controller provides a low-cost,
+15V high-side output that regulates even in the
absence of a load on the main output.
Other features include low-noise, fixed-frequency PWM
operation at moderate to heavy loads and a synchroniz-
able oscillator for noise-sensitive applications such as
electromagnetic pen-based systems and communicat-
ing computers. The MAX782 is a monolithic BiCMOS IC
available in fine-pitch, SSOP surface-mount packages.
_______________________Applic ations
Notebook Computers
Portable Data Terminals
Communicating Computers
Pen-Entry Systems
___________________________Features
o
Dual PWM Buck Controllers (+3.3V and +5V)
o
Dual PCMCIA VPP Outputs (0V/5V/12V)
o
Three Precision Comparators or Level Translators
o
95% Efficiency
o
420μA Quiescent Current;
70μA in Standby (linear regulators alive)
o
5.5V to 30V Input Range
o
Small SSOP Package
o
Fixed Output Voltages Available:
3.3 (standard)
3.45 (High-Speed Pentium)
3.6 (PowerPC)
______________Ordering Information
M
Triple-Output Power-S upply
Controller for Notebook Computers
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
36
35
34
33
32
31
30
29
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SS3
CS3
FB3
DH3
LX3
BST3
LX5
DL3
V+
VL
FB5
PGND
DL5
BST5
SYNC
REF
GND
VPPB
VDD
VPPA
Q1
Q2
Q3
VH
D3
D2
D1
ON3
SSOP
TOP VIEW
MAX782
22
21
20
19
15
16
17
18
ON5
DH5
CS5
SS5
DB0
DB1
DA0
DA1
__________________Pin Configuration
MAX782
5.5V
TO
30V
VPP
CONTROL
ON3
ON5
SYNC
POWER
SECTION
SUSPEND POWER
LOW-BATTERY WARNING
VPP (0V/5V/12V)
μ
P
MEMORY
PERIPHERALS
+3.3V
+5V
DUAL
PCMCIA
SLOTS
4
VPP (0V/5V/12V)
______Typic al Applic ation Diagram
19-0146; Rev 2; 5/94
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
36 SSOP
36 SSOP
36 SSOP
MAX782CBX
MAX782RCBX
MAX782SCBX
Ordering Information continued on last page.
Idle-Mode is a trademark of Maxim Integrated Products. Pentium is a trademark of Intel PowerPC is a trademark of IBM.
IEvaluation Kit
V
OUT
3.3V
3.45V
3.6V
相關PDF資料 |
PDF描述 |
|---|---|
| MAX782RCBX | Triple-Output Power-Supply Controller for Notebook Computers |
| MAX782SCBX | Triple-Output Power-Supply Controller for Notebook Computers |
| MAX789CCK | 5V/3.3V/3V 5A Step-Down, PWM, Switch-Mode DC-DC Regulators |
| MAX726 | Octal Buffers And Line Drivers With 3-State Outputs 20-CFP -55 to 125 |
| MAX787CCK | 5V/3.3V/3V 5A Step-Down, PWM, Switch-Mode DC-DC Regulators |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX782CBX+ | 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 |
| MAX782CBX+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 |
| MAX782CBX-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 |
| MAX782EBX | 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 |
| MAX782EBX-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 |
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