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Ricoh RP604 Buck-Boost DC-DC Converters feature a minimum supply current and a high efficiency at low-load. RP604 DC-DC Converters operate at a low operating quiescent current (0.3µA), making them ideal for wearable devices, applications for Internet of Things (IoT), and wireless communications modules requiring a low level of current consumption to extend battery life.
Ricoh RP604 Converters are particularly well suited when a supply voltage is required and located somewhere in between the voltage level of a fully charged and fully discharged battery. At the correct moment, the DC-DC Converter switches over from Buck mode to Boost mode automatically in order to maintain the output voltage setting. RP604 Converters are designed for applications that are mainly in sleep mode and wake-up periodically to perform a measurement, transmit data, and then return to sleep mode. For these type of applications, the current consumption in sleep mode should remain as low as possible. The RP604 offers a low quiescent current and consumes only 300nA, prolonging battery life, and making it possible for the designer to select a smaller sized battery for the application.
The RP604 Converters are able to provide up to 300mA in Buck mode. In Boost mode, the output current is less and related to the input voltage level.

Multiple protection circuits are integrated, including an Under Voltage Lock-Out circuit which disables the DC-DC Converter in case the input voltage drops below a minimum threshold. A soft-start circuit controls the output voltage to ramp-up smoothly, preventing any output overshoot and undershoot during the start-up period. The Lx current limit circuit prevents the peak current through the inductor to exceed a specific maximum current threshold. RP604 Converters also feature output overvoltage protection, which turns off both the P-channel and N-channel MOSFETs. Thermal protection shuts down the IC in case the junction temperature increases above 140ºC. An optional auto-discharge function rapidly discharges the output capacitor once the chip is disabled by the CE pin.

In order to reduce valuable circuit board space, RP604 Converters require only three external components. These devices are offered in compact WLCSP-20-P2 and DFN(PLP)2730-12 packages for design flexibility.
Input Voltage Range (Maximum Rating): 1.8V to 5.5V (6.5V)
Operating Quiescent Current (IQ): 0.3µA
Standby Current: 0.01µA
Output Voltage Range: 1.6V to 5.2V (0.1V step)
Output Voltage Accuracy: ±1.5%
Peak Efficiency: 92%
Maximum Output Current: 300mA (at Buck)
Auto Discharge Mode: Optional
Junction Temperature Range: -40°C to +125°C
Operating Temperature Range: -40°C to +85°C

RP604Z331B-E2-F制造商: Ricoh Electronics
产品种类: 开关稳压器  
安装风格: SMD/SMT
封装 / 箱体: WLCSP-20
输出电压: 3.3 V
输出电流: 300 mA
输出端数量: 1 Output
最大输入电压: 5.5 V
拓扑结构: Buck-Boost
最小输入电压: 1.8 V
最小工作温度: - 40 C
最大工作温度: + 85 C
系列: RP604Z
封装: Cut Tape
封装: Reel
输入电压: 1.8 V to 5.5 V 
静态电流: 0.3 uA 
类型: Ultra-Low Quiescent Current 
商标: Ricoh Electronic Devices Company 
关闭: Shutdown 
产品类型: Switching Voltage Regulators 
工厂包装数量: 5000 
子类别: PMIC - Power Management ICs 
电源电压-最小: 1.8 V

RP604Z331B-E2-F
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