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参数资料
| 型号： | MAX1724EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT STEP-UP MAX1722-MAX1724 |
| 产品培训模块： | Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步升 |
| 输出及类型： | 2，非隔离 |
| 输出电压： | 3.3V，3.6V |
| 电流 - 输出： | 100mA |
| 输入电压： | 0.91 ~ 3.3 V |
| 稳压器拓扑结构： | 升压 |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX1722，MAX1723，MAX1724 |
MAX1722/MAX1723/MAX1724
1.5μA I Q , Step-Up DC-DC Converters in TSOT
DAMPING
BATT
MAX1724
SWITCH
ZERO-
OUT
STARTUP
CIRCUITRY
CROSSING
DETECTOR
R 2
P
SHDN
R 1
ERROR
COMPARATOR
1.235V REFERENCE
CONTROL
LOGIC
DRIVER
CURRENT
LIMIT
N
LX
GND
Figure 2. MAX1724 Simplified Functional Diagram
1.2V TO V OUT
10 μ H
lacks a BATT pin; therefore, this circuit is powered
through the OUT pin. Adding a Schottky diode in paral-
lel with the P-channel synchronous rectifier allows for
10 μ F
SHDN
MAX1723
LX
OUT
D1
R2
2.37M Ω
V OUT = 3.6V
10 μ F
startup voltages as low as 1.2V for the MAX1723
(Figure 3). The external Schottky diode is not needed
for input voltages greater than 1.8V. Once started, the
output maintains the load as the battery voltage
decreases below the startup voltage.
GND
FB
R1
1.24M Ω
Shutdown (MAX1723/MAX1724)
The MAX1723/MAX1724 enter shutdown when the
SHDN pin is driven low. During shutdown, the body
diode of the P-channel MOSFET allows current to flow
from the battery to the output. V OUT falls to approxi-
mately V IN - 0.6V and LX remains high impedance.
Figure 3. MAX1723 Single-Cell Operation
up voltage is a function of load current (see Typical
Operating Characteristics). This circuit is powered from
the BATT pin for the MAX1722/MAX1724, guaranteeing
startup at input voltages as low as 0.91V. The MAX1723
Maxim Integrated
Shutdown can be pulled as high as 6V, regardless of
the voltage at BATT or OUT. For normal operation, con-
nect SHDN to the input.
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1724EZK27 | 制造商:Maxim Integrated Products 功能描述:1.5UA IQ STEP-UP DC-DC CONVERTERS - Cut Tape Product |
| MAX1724EZK27+ | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP UP 5PIN TSOT-23 - Rail/Tube |
| MAX1724EZK27+T | 功能描述:直流/直流开关转换器 1.5uA IQ Step-Up DC/DC 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 |
| MAX1724EZK27-T | 功能描述:直流/直流开关转换器 1.5uA IQ Step-Up DC/DC 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 |
| MAX1724EZK30 | 制造商:Maxim Integrated Products 功能描述:1.5UA IQ STEP-UP DC-DC CONVERTERS - Rail/Tube |
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