参数资料
型号: R1210N332D-TR
厂商: RICOH COMPANY LTD
元件分类: 稳压器
英文描述: 0.04 A SWITCHING CONTROLLER, 216 kHz SWITCHING FREQ-MAX, PDSO5
封装: MINI, SOT-23, 5 PIN
文件页数: 1/18页
文件大小: 193K
代理商: R1210N332D-TR
SOT-23-5 PWM Step-up
DC/DC Converter Controller
R1210Nxx2x SERIES
NO. EA-064-0508
1
OUTLINE
The R1210Nxx2C/xx2D Series are CMOS-based PWM step-up DC/DC Converter controllers, with high
accuracy, low supply current.
Each of the R1210Nxx2x Series consists of an oscillator, a PWM circuit, a reference voltage unit, an error
amplifier, phase compensation circuit, resistors for voltage detection, a chip enable circuit, a controller against
drastic load transient and an output voltage detector. A low ripple, high efficiency step-up DC/DC converter can
be composed of this IC with only four external components, or an inductor, a diode, a transistor and a capacitor.
The R1210Nxx2x Series can detect drastic change of output voltage with a circuit controller, the load transient
response is improved.
Each of the R1210Nxx2x Series has a driver pin, or ‘EXT’ pin for external transistor. By connecting a power
transistor with low ON-resistance to EXT pin, a large current flows through an inductor, thus, large output current
can be supplied.
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.
FEATURES
External Components .......................................Only an inductor, a diode, a capacitor, and a transistor
Standby Current ................................................Typ. 0A
Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/°C
Output Voltage ..................................................Stepwise Setting with a step of 0.1V in the range of
2.2V to 6.0V
Two choices of Basic Oscillator Frequency ......100kHz (xx2C), 180kHz (xx2D)
Small Package ..................................................SOT-23-5 (Mini-mold)
Low Ripple, Low Noise
Oscillator Start-up Voltage ................................Max. 0.8V
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.
相关PDF资料
PDF描述
R1210N402C-TL 0.04 A SWITCHING CONTROLLER, 120 kHz SWITCHING FREQ-MAX, PDSO5
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