Low on Resistance / Low Voltage 1A LDO for Automotive Application
The RP132x Series are voltage-regulators with a built-in low ON-resistance transistor and output current is 1A capability. These ICs have two versions: fixed output voltage type and externally adjustable output voltage type.
The minimum output voltage can be set from 1.4V. Otherwise, the load regulation of RP132x has much improved when compared with conventional regulators. It's Typ.5mV at IOUT=0.1mA to 1A.
Each of these ICs consists of a voltage reference unit, an error amplifier, a resistor net for setting output voltage, current limit circuits to prevent over-current and a thermal-shutdown circuit. A standby mode with ultra low supply current can be realized with the chip enable function.
The packages for these ICs are SOT-89-5, HSOP-6J and TO-252-5-P2. They range from high-density mounting to ultra high wattage.
|Input Voltage Range (Maximum Rating)||1.4V to 6.5V (7V)|
|Operating Temperature Range||−40°C to 105°C|
|Output Current||Min. 1A|
|Supply Current||Typ. 65µA|
|Standby Current||Typ. 0.15µA|
|Output Voltage Range||0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
*Contact Ricoh sales representatives for other voltages.
Adjustable Output Voltage Type: 0.8V to 5.5V
|Dropout Voltage||Typ. 0.52V (VOUT=3.0V, IOUT=1A)|
|Ripple Rejection||Typ. 70dB (f=1kHz, VOUT=3.0V)|
|Output Voltage Accuracy||±1.0%|
|Output Voltage Temperature-Drift Coefficient||Typ. ±60ppm/°C|
|Line Regulation||Typ. 0.052%/V|
|Load Regulation||Typ. 3mV at IOUT=300mA, Typ. 5mV at IOUT=1A|
SOT-89-5, HSOP-6J, TO-252-5-P2
|Inrush Current Limit Circuit||Typ. 500mA
B/D version: Inrush current limit time is 500µs.
|Fold-Back Protection Circuit||Typ. 250mA (Current at short mode)|
|Thermal Shutdown Circuit||Thermal Shutdown Temperature: Typ. 165°C
Released Temperature: Typ. 95°C
|Auto Discharge Function||D version|
|Ceramic capacitors are recommended to be used with this IC||2.2µF or more (VOUT ≤ 3.6V)
4.7µF or more (VOUT > 3.6V)
- ・Power source for accessories such as car audios, car navigation systems, and ETC systems
- ・Power source for control units including EV inverter and charge control.
|Data Sheet||Package||Quality Assurance Data||Suffix||Composition & Content*1|
|SOT-89-5||Contact us*2||-JE||Sn (Sn: 100%)|
|HSOP-6J||Contact us*2||-JE||Sn (Sn: 100%)|
|TO-252-5-P2||Contact us*2||-JE||Sn (Sn: 100%)|
- *1The composition of the product cannot be specified.
- *2The reliability information is not listed for devices above rank2. Please contact Ricoh sales representatives for further informations.