Key facts
- Brand
- Ricoh
- Model
- RP502X
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-10
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Ricoh RP502x Series Step-Down DC/DC Converter Datasheet
The RP502x Series are CMOS-based step-down DC/DC converters featuring a built-in synchronous rectifier to achieve high efficiency. The ICs integrate an oscillator, reference voltage unit, error amplifier, switching control circuit, soft-start circuit, and various protection circuits including current limit and latch protection.
These devices offer adjustable output voltages in 0.1V steps with an accuracy of +1.5% or +24mV. The switching mode is selectable between PWM/VFM auto switching for high efficiency at light loads and a fixed-frequency PWM type. Available packages include WLCSP-6-P2 and DFN1616-6, enabling high-density mounting.
Ricoh RP502X specifications
| Supply Current (Typical) | 750uA (at normal), 180uA (at light load) |
|---|---|
| Output Voltage Range | 0.8V to 3.3V (0.1V steps) |
| Oscillator Frequency | Typ. 3.3MHz |
| Maximum Duty Cycle | 100% |
| Built-in Driver ON Resistance (Typ.) | Pch. 0.5Ω, Nch. 0.5Ω |
| UVLO Detector Threshold (Typ.) | 2.2V |
| Soft Start Time (Typ.) | 0.12ms |
| Lx Current Limit (Typ.) | 900mA (Vout>=1.2V), 800mA (Vout<1.2V) |
| Latch Protection Circuit Delay (Typ.) | 1.5ms |
| Chip Enable Function | 'H' Active |
Source: Ricoh RP502x Series Step-Down DC/DC Converter Datasheet
All Ricoh RP502X documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the output voltage accuracy for the RP502x series?
The output voltage accuracy is +1.5% for voltages greater than or equal to 1.6V, and +24mV for voltages less than 1.6V.
From: Ricoh RP502x Series Step-Down DC/DC Converter Datasheet
What are the available packages for the RP502x series?
The available packages are WLCSP-6-P2 and DFN1616-6.
From: Ricoh RP502x Series Step-Down DC/DC Converter Datasheet