參數(shù)資料
型號： MAX769
廠商： Maxim Integrated Products, Inc.
英文描述： Dual J-K Negative-Edge-Triggered Flip-Flops With Preset And Clear 16-CDIP -55 to 125
中文描述： 2或3節(jié)電池、升/降壓型、雙向尋呼機系統(tǒng)電源IC
文件頁數(shù)： 1/16頁
文件大?。?/td> 161K
代理商： MAX769
________________General Desc ription
The MAX769 is a complete buck/boost power supply
and monitoring system for two-way pagers or other low-
power digital communications devices. Few external
components are required. Included on-chip are:
An 80mA output, synchronous-rectified, buck/boost
DC-DC converter with a digitally controlled +1.8V to
+4.9V output. The DC-DC converter is unique, since
it provides a regulated output for battery inputs that
are both less than and greater than the output volt-
age, without using transformers.
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 for beeper or vibrator drive
An evaluation kit for the MAX769 (MAX769EVKIT) is
available to aid in design and prototyping.
____________________________Features
o
Regulated Step-Up/Step-Down Operation
o
80mA Output from 3 Cells
o
85% Efficiency
o
13μA Idle Mode (coast) Current
o
Selectable Low-Noise PWM or Low-Current PFM
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
2 or 3-Cell Powered, Hand-Held Equipment
M
2 or 3-Cell, S tep-Up/Down,
Two-Way Pager S ystem IC
________________________________________________________________ Maxim Integrated Products
1
MAX769
INPUT
2 OR 3 AA ALKALINE BATTERIES
1.5V TO5.5V
BATT
LX2
OUT
PGND
REG2IN
OFS
REG2
OUTPUT 2
2.85V ANALOG
LOW-BATTERY
IN/OUT
REJECT
IN/OUT
SERIAL
I/O
1.8
DRIVERS
A/D
INPUT
OPTIONAL
OUTPUT 1
3V LOGIC
OUTPUT 3
1V RECEIVER
TORF PA
NiCd
BATTERY OR
STACK
REG1
REG3
NICD
AGND
REF
FILT
LBI
LBO
RSIN
RSO
CS
SCL
SD1
SD03
DR1
DR2
DR2IN
DRGND
CH0
SYNC
LX1
STORAGE
CAPACITOR
___________________________________________________Typic al Operating Circ uit
19-4771; Rev 1; 10/98
EVALUATION KIT MANUAL
PART
MAX769EEI
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
28 QSOP
Ordering Information
Idle Mode is a trademark of Maxim Integrated Products. SPI is a trademark of Motorola, Inc.
Pin Configuration appears at end of data sheet.
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.
FOLLOWS DATA SHEET
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相關代理商/技術參數(shù)
參數(shù)描述
MAX769EEI 功能描述:PMIC 解決方案 2-3 Cell Step-Up/Dwn 2-Way Pgr System IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
MAX769EEI+ 功能描述:PMIC 解決方案 2-3 Cell Step-Up/Dwn 2-Way Pgr System IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
MAX769EEI+T 功能描述:PMIC 解決方案 2-3 Cell Step-Up/Dwn 2-Way Pgr System IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
MAX769EEI-T 功能描述:PMIC 解決方案 2-3 Cell Step-Up/Dwn 2-Way Pgr System IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
MAX769EVKIT 功能描述:電源管理IC開發(fā)工具 Evaluation Kit for the MAX769 RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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