Key facts
- Brand
- Ricoh
- Model
- R1200X
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-09
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Ricoh R1200x Series Step-Up DC/DC Converter Datasheet
The Ricoh R1200x series consists of CMOS-based control type step-up DC/DC converter ICs designed for low supply current applications. Each IC integrates a Nch MOSFET, NPN transistor, oscillator, PWM comparator, and various protection circuits including current limit, over-voltage protection (OVP), and under-voltage lockout (UVLO). The series offers two versions: R1200xxxxA with an auto-discharge function at standby and R1200xxxxB without it. Available in DFN1616-6, DFN(PLP)1820-6, SOT-23-6, and WLCSP-6-P1 packages.
Read onlineRicoh R1200X specifications
| Supply Current | Typ. 500uA |
|---|---|
| Standby Current | Max. 3A |
| Input Voltage Range | 2.3V to 5.5V |
| Feedback Voltage | 1.0V |
| Temperature-Drift Coefficient | +150ppm/°C |
| Oscillator Frequency | Typ. 1.2MHz |
| Maximum Duty Cycle | Typ. 91% |
| Switch ON Resistance | Typ. 1.35Ω |
| UVLO Detector Threshold | Typ. 2.0V |
| Soft-start Time | Typ. 1.5ms |
| OVP Detector Threshold | 17V, 19V, 21V |
| Switching Control | PWM |
| Operating Temperature Range | -40 to 85 °C |
Source: Ricoh R1200x Series Step-Up DC/DC Converter Datasheet
All Ricoh R1200X documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What are the available OVP threshold voltages for the R1200x series?
The OVP threshold is selectable from 17V, 19V, or 21V.
What is the difference between R1200xxxxA and R1200xxxxB versions?
R1200xxxxA has an auto discharge function at standby, while R1200xxxxB does not.
What is the shutdown function of the R1200x?
The internal NPN transistor separates the output from the input in standby mode to completely cut off output voltage.
From: Ricoh R1200x Series PWM Step-up DC/DC Converter Datasheet
What components are required to configure the R1200x Series converter?
The device can be configured by simply using an inductor, divider resistors, and capacitors as external components.
From: Ricoh R1200x Series PWM Step-up DC/DC Converter Datasheet