R1210N221A-TL RICOH electronics devices division, R1210N221A-TL Datasheet

R1210N221A-TL

Manufacturer Part Number

R1210N221A-TL

Description

PWM Step-up DC/DC Converter

Manufacturer

RICOH electronics devices division

Datasheet

1.R1210N221A-TL.pdf (18 pages)

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PWM Step-up DC/DC Converter

R1210N××1× Series

APPLICATION MANUAL

NO. EA-075-0012

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R1210N221A-TL Summary of contents

Page 1

PWM Step-up DC/DC Converter R1210N××1× Series APPLICATION MANUAL NO. EA-075-0012 ...

R1210N××1× Series The R1210N××1× Series are PWM step-up DC/DC Converter, with high accuracy, low supply current by CMOS process. Each of the R1210N××1× Series consists of an oscillator, a PWM circuit, a reference voltage unit, an error amplifier, phase compensation ...

Page 3

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. In the R1210N Series, the output voltage, the oscillator frequency, the optional ...

Page 4

OUT GND Pin Output Voltage OUT OUT V L Pin Output Voltage Pin Input Voltage Pin Output Current ...

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V Output Voltage OUT V Maximum Input Voltage IN ∆V / Step-up Output Voltage OUT ∆Topt Temperature Coefficient Vstart Start-up Voltage ∆Vstart/ Start-up Voltage ∆Topt Temperature Coefficient Vhold Hold-on Voltage I ...

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I Supply Current1 DD1 I Supply Current2 DD2 Istandby Standby Current I L Leakage Current LXleak X Maximum Oscillator fosc Frequency ∆fosc/ Oscillator Frequency ∆Topt Temperature Coefficient Oscillator Maximum Duty Maxdty Cycle V V Limit Voltage LXlim ...

Page 7

I L Switching Current LX X fosc2 Change-over frequency 2.2V≤V ≤2.4V SET 70 V =0.4V LX 2.5V≤V ≤2.9V SET 85 V =0.4V LX 3.0V≤V ≤3.4V SET 100 V =0.4V LX 3.5V≤V ≤3.9V SET 120 V =0.4V LX 4.0V≤V ≤4.4V SET ...