R1210N301C Datasheet, PDF (3/18 Pages) RICOH electronics devices division – PWM Step-up DC/DC Converter

R1210N××1×
APPLICATIONS
• Power source for battery-powered equipment.
• Power source for portable communication appliances, cameras, VCRs
• Power source for appliances of which require higher voltage than battery voltage.
BLOCK DIAGRAM
LX 5
VLX limiter
Buffer
PWM Controller
OSC
Vref Circuit
Phase Comp.
fosc Control
2 VOUT
Chip Enable
1
CE
4 GND
SELECTION GUIDE
In the R1210N Series, the output voltage, the oscillator frequency, the optional function, and the taping type for the
ICs can be selected at the user’s request.
The selection can be made by designating the part number as shown below ;
R1210N××1×-××
↑ ↑↑
a bc
Code
Contents
Setting Output Voltage (VOUT) :
a
Stepwise setting with a step of 0.1V in the range of 2.2V to 6.0V (for ××1C/D version) or
2.2V to 3.5V (for ××1A version) is possible.
Designation of Oscillator Frequency
b
A : 100kHz with a Frequency Change-over circuit
C : 100kHz without a Frequency Change-over circuit
D : 180kHz without a Frequency Change-over circuit
c
Designation of Taping Type; Ex. :TR, TL (refer to Taping Specification)
“TR” is prescribed as a standard.
2