参数资料
| 型号： | MAX769EEI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC PAGER SYSTEM 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 手持/移动设备 |
| 电流 - 电源： | 4µA |
| 电源电压： | 1.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-QSOP |
| 供应商设备封装： | 28-QSOP |
| 包装： | 管件 |
19-4771; Rev 1; 10/98
KIT MA
UATION ET
EVAL TA SHE
FOLLO
WS DA
NUAL
2 or 3-Cell, Step-Up/Down,
Two-Way Pager System IC
________________General Description
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
____________________________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
Ordering Information
? Reset and low-battery (LBO) warning outputs
? Charger for NiCd/NiMH, lithium battery, or storage
PART
MAX769EEI
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
28 QSOP
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.
Pin Configuration appears at end of data sheet.
________________________Applications
Two-Way Pagers
GPS Receivers
2 or 3-Cell Powered, Hand-Held Equipment
___________________________________________________Typical Operating Circuit
INPUT
2 OR 3 AA ALKALINE BATTERIES
1.5V TO 5.5V
LOW-BATTERY
IN/OUT
REJECT
IN/OUT
SERIAL
LBI
LBO
RSIN
RSO
CS
SCL
BATT
LX1
LX2
OUT
PGND
REG2IN
I/O
SD1
SD03
MAX769
OFS
1.8 ?
DRIVERS
A/D
INPUT
DR1
DR2
DR2IN
DRGND
CH0
REG2
REG1
REG3
OUTPUT 2
2.85V ANALOG
OUTPUT 1
3V LOGIC
OUTPUT 3
1V RECEIVER
STORAGE
OPTIONAL
SYNC
FILT
REF
AGND
NICD
TO RF PA
NiCd
BATTERY OR CAPACITOR
STACK
Idle Mode is a trademark of Maxim Integrated Products. SPI is a trademark of Motorola, Inc.
________________________________________________________________ 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 1-800-835-8769.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX769EEI+ | 功能描述:PMIC 解决方案 2-3 Cell Step-Up/Dwn 2-Way Pgr System IC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX769EEI+T | 功能描述:PMIC 解决方案 2-3 Cell Step-Up/Dwn 2-Way Pgr System IC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX769EEI-T | 功能描述:PMIC 解决方案 2-3 Cell Step-Up/Dwn 2-Way Pgr System IC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX769EVKIT | 功能描述:电源管理IC开发工具 Evaluation Kit for the MAX769 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 |
| MAX7705CPA | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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