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参数资料
| 型号： | MAX679EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/6页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SWITCHED CAP 8UMAX |
| 标准包装： | 2,500 |
| 类型： | 升压（升压），切换电容（充电泵） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 输入电压： | 1.8 V ~ 3.6 V |
| 频率 - 开关： | 330kHz ~ 1MHz |
| 电流 - 输出： | 20mA |
| 同步整流器： | 无 |
| 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 |
19-1217; Rev 0; 4/97
Regulated 3.3V Charge Pump
_______________General Description
The MAX679 step-up, regulated charge pump gener-
ates a 3.3V ±4% output voltage from a 1.8V to 3.6V
input voltage (two alkaline, NiCd, or NiMH; or one
Lithium-Ion battery). Output current is 20mA (min) from
a 2.0V input. Only three external capacitors are needed
to build a complete DC-DC converter.
The MAX679’s switching frequency is pin selectable at
330kHz or 1MHz to allow trade-offs between lowest
supply current and smallest-size capacitors. The logic
shutdown function reduces the supply current to 5μA
(max) and disconnects the load from the input. Special
soft-start circuitry prevents excessive current from
being drawn from the battery during start-up. This DC-
DC converter requires no inductors and has low EMI. It
is available in the ultra-small μMAX package, which is
only 1.11mm high and half the area of an 8-pin SO.
________________________Applications
____________________________Features
o Regulated 3.3V ±4% Output
o Ultra-Small:
1.1mm-High, 8-Pin μMAX Package
o No Inductors Required
o Up to 1MHz Operation
(small external components)
o Fits into 0.05 in. 2
o Up to 85% Efficiency
o 1.8V to 3.6V Input Voltage Range
o 50μA Quiescent Supply Current
o 1μA Shutdown Current
______________Ordering Information
Battery-Powered Applications
Miniature Equipment
PART
MAX679C/D
MAX679EUA
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
Dice*
8 μMAX
Backup-Battery Boost Converters
Translators
Two-Way Pagers
__________Typical Operating Circuit
*Dice are tested at T A = +25°C only.
__________________Pin Configuration
INPUT
2V to 3.6V
IN
OUT
OUTPUT
3.3V, 20mA
TOP VIEW
C IN
C OUT
FSET
MAX679
C1+
FSET 1
SHDN 2
IN 3
MAX679
8
7
6
OUT
C1+
C1-
SHDN
C1
GND 4
5
PGND
OFF/ON
C1-
PGND
GND
μ MAX
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6800UR26D1 | 制造商:Maxim Integrated Products 功能描述:3-PIN LOW-POWER MICROPROCESSOR RES - Rail/Tube |
| MAX6800UR26D1+T | 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 |
| MAX6800UR26D1-T | 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 |
| MAX6800UR26D2 | 制造商:Maxim Integrated Products 功能描述:3-PIN LOW-POWER MICROPROCESSOR RES - Rail/Tube |
| MAX6800UR26D2+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.63V 5UA 3PIN SOT-23 - Rail/Tube |
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