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参数资料
| 型号： | MAX1730EUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/8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 |
50mA Regulated Step-Down Charge Pump
for 1.8V or 1.9V Logic
V IN
V OUT = V IN
C IN
NOTE: SWITCH STATES SET FOR STAGE 1.
ALL SWITCHES REVERSE STATE FOR STAGE 2.
Figure 1. 1:1 Capacitor Configuration
C1
C2
C OUT
VIN
C IN
C1
C2
VIN
C IN
C1
C2
V OUT = V IN
2
3
C OUT
C OUT
V OUT = 1 V IN
2
NOTE: SWITCH STATES SET FOR STAGE 1.
ALL SWITCHES REVERSE STATE FOR STAGE 2.
Figure 2. 3:2 Capacitor Configuration
To maximize efficiency, the MAX1730 automatically
switches between charge-pump configurations (Figures
1, 2, and 3). Efficiency is greatest when the IN/OUT volt-
age ratio is close to the voltage ratio of the selected
capacitor configuration and decreases for output volt-
ages lower than the divider ratio. To choose between
configurations, the MAX1730 senses the input voltage
and the output voltage. The MAX1730 uses a control
scheme with hysteresis to prevent oscillation between
capacitor configurations.
NOTE: SWITCH STATES SET FOR STAGE 1.
ALL SWITCHES REVERSE STATE FOR STAGE 2.
Figure 3. 2:1 Capacitor Configuration
Applications Information
Setting the Output Voltage
For an output voltage of 1.8V, connect FB to GND. For
an output voltage of 1.9V, connect FB to IN.
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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 |
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