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参数资料
| 型号： | MAX1730EUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SWITCHED CAP 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），切换电容（充电泵） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.8V，1.9V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 2kHz |
| 电流 - 输出： | 50mA |
| 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： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-µMAX |
19-1618; Rev 0; 4/00
50mA Regulated Step-Down Charge Pump
for 1.8V or 1.9V Logic
General Description
The MAX1730 regulated step-down charge pump gen-
erates up to 50mA at fixed output voltages of 1.8V or
1.9V from an input voltage in the 2.7V to 5.5V range.
Specifically designed to provide high-efficiency logic
supplies in applications that demand a compact
design, the MAX1730 employs fractional conversion
techniques to provide efficiency exceeding that of a lin-
ear regulator.
The MAX1730 operates at up to 2MHz, permitting the
use of small 0.22μF flying capacitors while maintaining
low 75μA quiescent supply current. Proprietary soft-
start circuitry prevents excessive current from being
drawn from the supply during startup, making the
MAX1730 compatible with higher impedance sources
such as alkaline and lithium-ion cells.
The MAX1730 is available in a space-saving 10-pin
μMAX package that is only 1.09mm high and occupies
one-half the area of an 8-pin SO.
Applications
Features
o > 85% Peak Efficiency
o 50mA Guaranteed Output Current
o Dual-Mode 1.8V or 1.9V Output
o ±3% Output Voltage Accuracy
o Up to 2MHz Operating Frequency
o Small 0.22μF Capacitors
o No Inductor Required
o 2.7V to 5.5V Input Voltage Range
o Output Disconnects from Input in Shutdown Mode
o Small 10-Pin μMAX Package (1.09mm max height)
Ordering Information
Low-Voltage Logic Supplies
Wireless Handsets
PART
MAX1730EUB
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
10 μMAX
PDAs
PC Cards
Hand-Held Instruments
INPUT
2.7V TO 5.5V
1 μ F
Typical Operating Circuit
TOP VIEW
Pin Configuration
FB 1
10 IN
SHDN
IN
OUT
OUTPUT
1.8V OR 1.9V, UP TO 50mA
SHDN
C1P
2
3
MAX1730
9
8
OUT
C2P
C1P
MAX1730
C2P
4.7 μ F
C1N
GND
4
5
μ MAX
7
6
C2N
PGND
0.22 μ F
C1N
FB
C2N
GND PGND
0.22 μ F
________________________________________________________________ Maxim Integrated Products
1
For free samples and the latest literature, visit 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 |
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| MAX1733EUK | 制造商:Maxim Integrated Products 功能描述:5 PIN COUNT SOT PACKAGE TYPE - Bulk |
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| MAX1733EUK+T | 功能描述:直流/直流开关转换器 Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1733EUK-T | 功能描述:直流/直流开关转换器 Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1733EUK-TG05 | 功能描述:直流/直流开关转换器 Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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