Key facts
- Brand
- Ricoh
- Model
- R1232D
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-10
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Ricoh R1232D Series PWM Step-Down DC/DC Converter Datasheet
The R1232D Series are CMOS-based PWM step-down DC/DC converters featuring a built-in synchronous rectifier and low supply current. These ICs include an oscillator, PWM control circuit, voltage reference unit, error amplifier, soft-start circuit, and various protection circuits such as UVLO and latch-type over-current protection.
The series offers two choices of oscillator frequency (1MHz or 2.25MHz) and supports output voltages from 0.9V to 3.3V for fixed types, while adjustable types support a range from 0.8V to Vin. The devices are available in an SON-8 package with lead-free and halogen-free options.
Ricoh R1232D specifications
| Operating Temperature Range | -40 to 85 °C |
|---|---|
| Power Dissipation (SON-8) | 480 mW |
| Oscillator Frequency Options | 1MHz or 2.25MHz |
Source: Ricoh R1232D Series PWM Step-Down DC/DC Converter Datasheet
All Ricoh R1232D documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the typical soft-start time for this converter?
The typical soft-start time is 1.0ms at an oscillator frequency of 1MHz.
From: Ricoh R1232D Series PWM Step-Down DC/DC Converter Datasheet
What type of capacitor is recommended for the output?
A ceramic capacitor with a capacitance of 10u.F or more can be used as the output capacitor.
From: Ricoh R1232D Series PWM Step-Down DC/DC Converter Datasheet
What are the two types of R1232D Series available?
The series comes in two types: R1232Dxx1A/B with internally fixed output voltage and R1232D001C/D with adjustable output voltage.
From: Ricoh R1232D Series PWM Step-down DC/DC Converter Datasheet
What is the typical supply current at 1 MHz?
The typical supply current (Ip) is 140A when operating at 1 MHz.
From: Ricoh R1232D Series PWM Step-down DC/DC Converter Datasheet