參數(shù)資料
型號(hào)： MAX1678EUA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 1-Cell to 2-Cell, Low-Noise, High-Efficiency, Step-Up DC-DC Converter
中文描述： 1 A SWITCHING REGULATOR, PDSO8
封裝： 1.10 MM HEIGHT, UMAX-8
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 166K
代理商： MAX1678EUA
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 MAX1678 is a high-efficiency, low-voltage, syn-
chronous-rectified, step-up DC-DC converter intended
for use in devices powered by 1 to 3-cell alkaline,
NiMH, or NiCd batteries or a 1-cell lithium battery. It
guarantees a 0.87V start-up voltage and features a low
37μA quiescent supply current.
The device includes a 1
, N-channel MOSFET power
switch, a synchronous rectifier that acts as the catch
diode, a reference, pulse-frequency-modulation (PFM)
control circuitry, and circuitry to reduce inductor ring-
ing—all in an ultra-small, 1.1mm-high μMAX package.
The output voltage is preset to 3.3V or can be adjusted
from +2V to +5.5V using only two resistors. Efficiencies
up to 90% are achieved for loads up to 50mA. The
device also features an independent undervoltage
comparator (PFI/PFO) and a logic-controlled 2μA shut-
down mode.
Applic ations
Pagers
Remote Controls
Pointing Devices
Personal Medical Monitors
Single-Cell Battery-Powered Devices
Features
o
0.87V Guaranteed Start-Up
o
Up to 90% Efficiency
o
Built-In Synchronous Rectifier (no external diode)
o
Ultra-Small μMAX Package, 1.1mm High
o
37μA Quiescent Current (85μA from 1.5V battery)
o
2μA Logic-Controlled Shutdown
o
Power-Fail Detector
o
Dual Mode Output: Fixed 3.3V
Adjustable 2V to 5.5V
o
45mA Output Current at 3.3V for 1-Cell Input
o
90mA Output Current at 3.3V for 2-Cell Input
o
Inductor-Damping Switch Suppresses EMI
M
1-Cell to 2-Cell, Low-Noise,
High-Effic ienc y, S tep-Up DC-DC Converter
________________________________________________________________ Maxim Integrated Products
1
1
2
3
4
8
7
6
5
OUT
LX
GND
FB
SHDN
PFO
PFI
BATT
MAX1678
μ
MAX
TOP VIEW
OUT
OUTPUT
3.3V
INPUT
0.87V TOV
OUT
ON
LOW-BATTERY
DETECTOR INPUT
LOW-BATTERY
DETECTOR OUTPUT
OFF
PFO
BATT
LX
MAX1678
SHDN
PFI
GND
FB
Typic al Operating Circ uit
19-1381; Rev 0; 7/98
EVALUATION KIT
AVAILABLE
PART
MAX1678EUA
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
8 μMAX
Note: To order these devices shipped in tape-and-reel, add a -T
to the part number.
Pin Configuration
Ordering Information
Dual Mode is a trademark of Maxim Integrated Products.
相關(guān)PDF資料
PDF描述
MAX1678 1-Cell to 2-Cell, Low-Noise, High-Efficiency, Step-Up DC-DC Converter
MAX1679EUA Single-Cell Li Battery Charger for Current-Limited Supply
MAX1679 Single-Cell Li Battery Charger for Current-Limited Supply
MAX1680 125mA, Frequency-Selectable, Switched-Capacitor Voltage Converters
MAX1680ESA 125mA, Frequency-Selectable, Switched-Capacitor Voltage Converters
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1678EUA+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 1-2 Cell Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1678EUA+T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 1-2 Cell Step-Up DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1678EUAT 制造商:Maxim Integrated Products 功能描述:
MAX1678EUA-T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1678EVKIT 功能描述:電源管理IC開(kāi)發(fā)工具 Evaluation Kit for the MAX1678 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*