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参数资料
| 型号： | DS1670E |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| 封装： | 4.40 MM, TSSOP-20 |
| 文件页数： | 1/16页 |
| 文件大小： | 312K |
| 代理商： | DS1670E |
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
General Description
The MAX774/MAX775/MAX776 inverting switching
regulators deliver high efficiency over three decades of
load current. A unique current-limited, pulse-
frequency modulated (PFM) control scheme provides
the benefits of pulse-width modulation (high efficiency
with heavy loads), while using less than 100A of supply
current (vs. 2mA to 10mA for PWM converters). The result
is high efficiency over a wide range of loads.
These ICs also use tiny external components; their high
switching frequency (up to 300kHz) allows for less than
5mm diameter surface-mount magnetics.
The MAX774/MAX775/MAX776 accept input voltages from
3V to 16.5V, and have preset output voltages of
-5V, -12V, and -15V, respectively. Or, the output voltage
can be user-adjusted with two resistors. Maximum
VIN - VOUT differential voltage is limited only by the break-
down voltage of the chosen external switch transistor.
These inverters use external P-channel MOSFET switches,
allowing them to power loads up to 5W. If less power is
required, use the MAX764/MAX765/MAX766 inverting
switching regulators with on-board MOSFETs.
Applications
LCD-Bias Generators
High-Efficiency DC-to-DC Converters
Battery-Powered Applications
Data Communicators
Features
o 85% Efficiency for 5mA to 1A Load Currents
o Up to 5W Output Power
o 100A (max) Supply Current
o 5A (max) Shutdown Current
o 3V to 16.5V Input Range
o -5V (MAX774), -12V (MAX775), -15V (MAX776),
or Adjustable Output Voltage
o Current-Limited PFM Control Scheme
o 300kHz Switching Frequency
Ordering Information
*Contact factory for dice specifications.
MAX774/MAX775/MAX776
-5V/-12V/-15V or Adjustable, High-Efficiency,
Low IQ Inverting DC-to-DC Controllers
________________________________________________________________ Maxim Integrated Products
1
1
2
3
4
5
8
7
6
MAX774
MAX775
MAX776
DIP/SO
TOP VIEW
GND
EXT
CS
V+
OUT
FB
SHDN
REF
Pin Configuration
MAX774
OUTPUT
-5V
REF
SHDN
GND
V+
CS
EXT
OUT
ON/OFF
INPUT
3V TO 16V
P
FB
Typical Operating Circuit
PART
TEMP RANGE
PIN-PACKAGE
MAX774CPA
0°C to +70°C
8 Plastic DIP
MAX774CSA
0°C to +70°C
8 SO
MAX774C/D
0°C to +70°C
Dice*
MAX774EPA
-40°C to +85°C
8 Plastic DIP
MAX774ESA
-40°C to +85°C
8 SO
MAX774MJA
-55°C to +125°C
8 CERDIP
19-0191; Rev 2; 12/02
EVALUATION
KIT
AVAILABLE
Ordering Information continued on last page.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1670E/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC CTRLR SYSTEM PORTABLE 20TSSOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Portable System Controller |
| DS1670E/T&R | 功能描述:实时时钟 Portable System Controller RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1670E/TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Portable System Controller |
| DS1670E+ | 功能描述:实时时钟 Portable System Controller RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1670E+T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC CTRLR SYSTEM PORTABLE 20TSSOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Portable System Controller |
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