R1210N332D RICOH Co.,Ltd., R1210N332D Datasheet

R1210N332D

Manufacturer Part Number

R1210N332D

Description

Manufacturer

RICOH Co.,Ltd.

Datasheets

1.R1210N331D.pdf (19 pages)

2.R1210N332D.pdf (1 pages)

Specifications of R1210N332D

Date_code

05+

Packing_info

SOT-153

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

R1210N332D-TR-F

Manufacturer:

RICOH/理光

Quantity:

20 000

Current page: 1 of 19
Download datasheet (203Kb)

R1210Nxx1x SERIES

OUTLINE

current.

amplifier, phase compensation circuit, resistors for voltage detection, a chip enable circuit. Further, includes a

controller against drastic load transient, a control transistor with low ON-Resistance, ‘L

circuit for L

oscillator frequency each. A low ripple, high efficiency step-up DC/DC converter can be composed of this IC with

only three external components, or an inductor, a diode and a capacitor.

response is improved compared with current model, furthermore the R1210Nxx1A Series have another function,

that is, when the load current is small, oscillator frequency is decreased by a circuit for switching oscillator

frequency from Typ. 100kHz to 35kHz, therefore, supply current is reduced.

FEATURES

APPLICATIONS

The R1210Nxx1x Series are CMOS-based PWM step-up DC/DC Converter, with high accuracy, low supply

Each of the R1210Nxx1x Series consists of an oscillator, a PWM circuit, a reference voltage unit, an error

The R1210N Series can detect drastic change of output voltage with a circuit controller. The load transient

The built-in chip enable circuit can make the standby mode with ultra low quiescent current.

Since the package for these ICs is small SOT-23-5, high density mounting of the ICs on board is possible.

• External Components .......................................Only an inductor, a diode, and a capacitor

• Standby Current ................................................Max. 0.5µA

• Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C

• Output Voltage ..................................................Stepwise Setting with a step of 0.1V in the range of

• Two choices of Basic Oscillator Frequency ......100kHz (xx1A/C), 180kHz (xx1D)

• Output Voltage Accuracy...................................±2.5%

• Small Package ..................................................SOT-23-5 (Mini-mold)

• High Efficiency ..................................................Typ. 88% (V

• Low Ripple, Low Noise

• Built-in a driver transistor with low on-resistance

• Start-up Voltage.................................................Max. 0.9V

• Basic Frequency change-over circuit (only for xx1A type) from Typ. 100kHz to 35kHz

• 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.

switch and an output voltage detector. R1210Nxx1A Series contain further a circuit for changeover

PWM Step-up DC/DC Converter

2.2V to 6.0V (xx1C/D), 2.2V to 3.5V (xx1A)

=Set Output Voltage×0.6 [V], I

switch’, and a protection

NO. EA-075-071207

OUT

=10mA)

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