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參數(shù)資料
| 型號： | MAX863 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual, High-Efficiency, PFM, Step-Up DC-DC Controller(雙輸出,高效,PFM,步升DC-DC變換器) |
| 中文描述： | 雙路、高效率、PFM、升壓型DC-DC控制器 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 23K |
| 代理商： | MAX863 |
_______________General Desc ription
The MAX863 dual-output DC-DC converter contains
two independent, high-efficiency, current-limited PFM
(pulse-frequency-modulated) boost controllers integrat-
ed on one space-saving circuit. It accepts inputs down
to 1.5V and is intended for use in small, hand-held
equipment powered from two or three battery cells or
one lithium ion cell. The MAX863 comes in a miniature
16-pin QSOP that fits in the same area as a standard 8-
pin SO.
Each output can be set to any boosted voltage using
two external resistors. One of the outputs also uses the
Dual-Mode feature, which allows a 3.3V or 5V output.
Both controllers drive inexpensive, external N-channel
MOSFETs at up to 300kHz, permitting small external
components.
The MAX863 extends battery life with 82% efficiency
over a 20mA to 1A output range. It also saves battery
life with a low 65μA (max) quiescent supply current,
even when both supplies are on. A separate logic-con-
trolled shutdown for each converter allows power-man-
agement flexibility and decreases supply current to just
1μA (max).
Other features include soft-start to prevent surge cur-
rents when powering up, and a built-in LBI/LBO low-
battery detector. The MAX863 evaluation kit (MAX863
EVKIT-SO) is available to assist with designs. For a sin-
gle-output controller, refer to the MAX1771 data sheet.
________________________Applic ations
2 or 3 Cell Portable Equipment
Organizers, PDAs, and Palmtops
Dual 3.3V/5V Logic and Positive LCD Supply
Flash Memory Programmers
Split 3.3V Logic and 5V Memory Systems
____________________________Features
o
Smallest Dual Boost Controller
o
16-Pin QSOP Fits in 8-Pin SO Area
o
High Efficiency (>80% from 20mA to 1A)
o
65μA (max) Quiescent Supply Current
o
1μA (max) Shutdown Current
o
LBI/LBO Low-Battery Detector
o
Drives Surface-Mount, Dual N-Channel FET
o
2 or 3 NiCd/NiMH Cell or 1 Lithium Cell Operation
o
Also Configurable as Step-Up/Down Controller
M
Dual, PFM, S tep-Up
DC-DC Controller
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
SHDN1
SHDN2
LBI
LBO
BOOT
FB1
V
DD
OUT1
TOP VIEW
MAX863
FB2
SEL
CS2
EXT2
PGND
GND
EXT1
CS1
QSOP
__________________Pin Configuration
PART
MAX863C/D
MAX863IKE
MAX863EKE
*Dice are tested at T
A
= +25°C.
-40°C to +85°C
-25°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
Dice*
16 QSOP
16 QSOP
ADVANCE INFORMATION
All information in this data sheet is preliminary
and subject to change.
6/95
______________Ordering Information
Dual Mode is a trademark of Maxim Integrated Products.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8630WETD20+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8630WETD20+T | 功能描述:LED照明驅(qū)動器 125mA 1x/1.5x Charge Pump for 5 WLEDs RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX8630WETD25+T | 功能描述:LED照明驅(qū)動器 125mA 1x/1.5x Charge Pump for 5 WLEDs RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX8630XETD15+T | 功能描述:LED照明驅(qū)動器 125mA 1x/1.5x Charge Pump for 5 WLEDs RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX8630XETD18+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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