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| 型号： | MAX1678EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC 3.3V/ADJ 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，2 V ~ 5.5 V |
| 输入电压： | 0.7 V ~ 5.5 V |
| 电流 - 输出： | 90mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-uMAX |
19-1381; Rev 0; 7/98
ATION
EVALU
AVAILA
KIT
BLE
1-Cell to 2-Cell, Low-Noise,
High-Efficiency, Step-Up DC-DC Converter
General Description
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.
Applications
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
Ordering Information
Pagers
PART
MAX1678EUA
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
8 μMAX
Remote Controls
Pointing Devices
Personal Medical Monitors
Single-Cell Battery-Powered Devices
Typical Operating Circuit
Note: To order these devices shipped in tape-and-reel, add a -T
to the part number.
Pin Configuration
INPUT
0.87V TO V OUT
LX
OUT
OUTPUT
3.3V
TOP VIEW
MAX1678
BATT
BATT
1
8
OUT
ON
OFF
LOW-BATTERY
DETECTOR INPUT
SHDN
PFI
GND
FB
PFO
LOW-BATTERY
DETECTOR OUTPUT
PFI
PFO
SHDN
2
3
4
MAX1678
7
6
5
LX
GND
FB
μ MAX
Dual Mode is a trademark of Maxim Integrated Products.
________________________________________________________________ Maxim Integrated Products
1
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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1678EVKIT | 功能描述:电源管理IC开发工具 Evaluation Kit for the MAX1678 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX1679EUA | 功能描述:电池管理 Battery Charger Current-Limited Sply RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1679EUA+ | 功能描述:电池管理 Battery Charger Current-Limited Sply RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1679EUA+T | 功能描述:电池管理 Battery Charger Current-Limited Sply RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1679EUA-T | 功能描述:电池管理 Battery Charger Current-Limited Sply RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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