Industrial

The RP104x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low supply current and low ON-resistance. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit and a chip enable circuit. These ICs perform with ultra low supply current (Typ.1.0µA), which prolong the battery life. Since the packages for these ICs are DFN(PLP)1010-4, SOT-23-5 and SC-82AB (Limited), therefore high density mounting of the ICs on boards is possible.

The RP109x Series Low Noise 150mA LDO Regulator is a CMOS-based voltage regulator IC with high output voltage accuracy, extremely low supply current, low ON-resistance, and high ripple rejection. Each of these ICs consists of a voltage reference unit, an error amplifier, a resistor-net for voltage setting, a current limit circuit and a chip enable circuit. These ICs perform with low dropout voltage and a chip enable function which prolong the battery life. The line transient response and load transient response of the RP109x Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment. RP109x Series contributes to the downsizing of the hand-held equipment because it can use the 0.1μF ceramic capacitor. In addition to SOT-23-5, SC-88A and DFN1010-4 packages, a 0.8mm square ultra compact DFN(PLP)0808-4 package is also available.

RP109x Series are CMOS-based LDO regulators featuring 150mA output. The input voltage (VIN) is as low as Min. 1.4V and the output voltage can be set from 0.8V. RP109x Series features an excellent line transient response, ripple rejection at 75dB, and low noise. The output voltage accuracy has been improved to ± 1% and the temperature drift coefficient of the output voltage is as low as ± 30ppm/°C. In addition to SOT-23-5, SC-88A and DFN1010-4 packages, a 0.8mm square ultra compact DFN(PLP)0808-4 package is also available. RP109x Series contributes to the downsizing of the hand-held equipment because it can use the 0.1μF ceramic capacitor.

The R1182x Series is a CMOS-based positive voltage regulator IC with high output voltage accuracy and low supply current. The ICs have a fixed output voltage with high accuracy. The R1182x Series has low dropout voltage and low static current consumption. It improves transient response in all load ranges through seamless technology. It offers high density mounting capability and comes in various package options.

The R1182x Series are CMOS-based seamless LDO regulators featuring 150mA output. Ricoh unique seamless technology smoothly changes transient response according to a output current without switching to a low power mode. Compared to the same seamless R1116x Series (10μA), R1182x features low supply current and low voltage. Additionally, the output voltage accuracy has improved to ±1%. Standby mode and auto-discharge function are also available (see Selection Guide). Ceramic capacitors can be used.

The R1180x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low supply current, and low ON-resistance. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit which prevents the destruction by excess current, and so on. The output voltage of these ICs is fixed with high accuracy. B version has a chip enable pin, therefore ultra-low consumption current standby mode can be realized with the pin. Since the packages for these ICs are SOT-23-5 (R1180N Series), SC-82AB (R1180Q Series), and SON1612-6 (R1180D Series), therefore high density mounting of the ICs on boards is possible.

The R1180x Series Low Supply Current 150mA LDO is a CMOS LDO regulator featuring 150mA output. R1180x’s typical low supply current of 1μA makes it ideal for use in power supplies systems with the sleep mode on. The version that reduced supply current to the lowest possible level by eliminating the CE pin is also available.

The R1163x Series is a CMOS-based voltage regulator IC with high output voltage accuracy and low supply current. These ICs have chip enable function and realize a standby mode with ultra low supply current. To prevent destruction by over current, the current limit circuit is included. The R1163x Series has 3 modes. One is standby mode with CE or standby control pin. The other two modes are realized with ECO pin. Fast Transient Mode (FT mode) and Low Power Mode (LP mode) can be alternated with ECO pin. The consumption current is reduced in Low Power Mode compared to Fast Transient Mode. The output voltage is maintained between FT mode and LP mode. Furthermore, the reverse current protection circuit is built-in. Therefore, if a higher voltage than VDD pin is forced to the output pin, the reverse current to VDD pin is very small (Max. 0.1μA), making it suitable for backup circuit. Since the packages for these ICs are SOT-23-5, SON-6, and DFN(PLP)1616-6 packages, high density mounting of the ICs on boards is possible.

The R1163x Series are CMOS-based manual mode switching LDO regulators with ECO pin featuring 150mA output. By inputting control signals to the ECO pin, the mode of the regulator can be switched to low power mode or fast response mode, thus making both active and sleep modes available for the system. The built-in reverse current protection circuit prevents the current flow from VOUT to VDD when VOUT is higher than VDD. This feature makes the product ideally suited for backup circuit. Standby mode and auto-discharge function are also available (see Selection Guide). Ceramic capacitors can be used.

The series products are CMOS-based voltage regulator ICs with high output voltage accuracy and low supply current

The R1162D Series are CMOS-based manual mode switching LDO regulators with ECO pin featuring 150mA output. By inputting control signals to the ECO pin, the mode of the regulator can be switched to low power mode or fast response mode, thus making both active and sleep modes available for the system. The CE pin can switch the regulator into standby mode. The version with the auto-discharge function is also available. Ceramic capacitors can be used.

The R1154x series are CMOS-based voltage regulator (VR) ICs. The R1154x has features of high output voltage accuracy and ultra-low supply current. A peak current limit circuit, a short current limit circuit, and a thermal shutdown circuit are built in the R1154x series. The regulator output voltage is fixed in the R1154xxxxB, while adjustable type is the R1154x001C. Output voltage accuracy is ±2.0%. Since the packages for these ICs are DFN1616-6, SOT-23-5, and SOT-89-5, high density mounting of the ICs on boards is possible.

The R1154x Series are CMOS-based 24V input voltage regulators featuring 150mA output (2.5V ≤ VOUT ≤ 2.9V, 140mA). In addition to B version with the internally fixed output voltage, C version with adjustable output voltage with an external resistor is also available. In addition to a fold-back protection circuit built into conventional regulators, R1154x contains a thermal shutdown circuit. R1154x features high input voltage of Max. 24V and wide operating range -40°C to 105°C, making it suitable for use in digital home appliances.

The document describes a chlorine (Cl2) analysis method and a test kit for measuring chlorine concentration in the range of 50 to 150 g/L. The analysis method is based on the iodometric titration using the provided reagents. The sample size is 1 mL and each test kit can perform approximately 100 tests. The method is suitable for monitoring chlorine concentration, particularly in sodium hypochlorite solution used for pool water treatment.