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參數(shù)資料
| 型號： | MAX847 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CDIP -55 to 125 |
| 中文描述： | 1節(jié)電池、升壓型、雙向?qū)ず魴C系統(tǒng)電源IC |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 167K |
| 代理商： | MAX847 |
________________General Desc ription
The MAX847 is a complete power-supply and monitor-
ing system for two-way pagers or other low-power digi-
tal communications devices. It requires few external
components. Included on-chip are:
A 1-cell input, 80mA output, synchronous-rectified
boost DC-DC regulator with a digitally controlled
+1.8V to +4.9V output
Three low-noise linear-regulator outputs
Three DAC-controlled comparators for software-
driven 3-channel A/D conversion
SPI-compatible serial interface
Reset and low-battery (LBO) warning outputs
Charger for NiCd, NiMH, lithium battery, or storage
capacitor for RF PA power or system backup
Two 1.8
(typical) serial-controlled open-drain
MOSFET switches
An evaluation kit for the MAX847 (MAX847EVKIT) is
available to aid in design and prototyping.
Pin Configuration appears at end of data sheet.
____________________________Features
o
80mA Output from 1 Cell at 90% Efficiency
o
13μA Idle Mode (coast) Current
o
Selectable Low-Noise PWM or Low-Current
Operation
o
PWM Operating Frequency Synchronized to
Seven Times an External Clock Source
o
Operates at 270kHz with No External Clock
o
Automatic Backup-Battery Switchover
________________________Applic ations
Two-Way Pagers
GPS Receivers
1-Cell Powered Hand-Held Equipment
M
1-Cell, S tep-Up
Two-Way Pager S ystem IC
________________________________________________________________ Maxim Integrated Products
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.
1
MAX847
INPUT
SINGLE AA
ALKALINE BATTERY
0.8V TO1.8V
BATT
LX1
OUT
PGND
REG2IN
OFS
REG1
OUTPUT 2
2.85V ANALOG
LOW-BATTERY
IN/OUT
RESET
IN/OUT
SERIAL
I/O
1.8
DRIVERS
A/D INPUT
OPTIONAL
OUTPUT 1
3V LOGIC
OUTPUT 3
1V RECEIVER
TORF PA
NiCd BATTERY STACK
OR
STORAGE CAPACITOR
REG2
REG3
NICD
AGND
REF
FILT
LBI
LBO
RSIN
RSO
CS
SCL
SDI
SDO
DR1
DR2
DR2IN
DRGND
CH0
SYNC
RUN
COAST
RUN
____________________________________________________Typic al Operating Circ uit
PART
MAX847EEI
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
28 QSOP
19-1349; Rev 1a; 10/98
Ordering Information
Idle Mode is a trademark of Maxim Integrated Products. SPI is a trademark of Motorola, Inc.
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
相關(guān)PDF資料 |
PDF描述 |
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| MAX848-MAX849 | 1-Cell to 3-Cell, High-Power, Low-Noise, Step-Up DC-DC Converters |
| MAX849ESE | 1-Cell to 3-Cell, High-Power, Low-Noise, Step-Up DC-DC Converters |
| MAX848ESE | 1-Cell to 3-Cell, High-Power, Low-Noise, Step-Up DC-DC Converters |
| MAX848 | Low-Noise, Step-Up DC-DC Converters(高功率，低噪，帶0.5AMOSFET功率開關(guān),步升DC-DC變換器) |
| MAX849 | Low-Noise, Step-Up DC-DC Converters(高功率，低噪，帶0.5AMOSFET功率開關(guān),步升DC-DC變換器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX847EEI | 功能描述:電池管理 1 Cell Step-Up 2-Way Pager System IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX847EEI+ | 功能描述:電池管理 1 Cell Step-Up 2-Way Pager System IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX847EEI+T | 功能描述:電池管理 1 Cell Step-Up 2-Way Pager System IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX847EEI-C70955 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX847EEI-T | 功能描述:電池管理 1 Cell Step-Up 2-Way Pager System IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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