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Nisshinbo Micro Devices Inc. R1223N332F-TR-FE product image
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Nisshinbo Micro Devices Inc. R1223N332F-TR-FERoHS

Manufacturer
Nisshinbo Micro Devices Inc.
MPN
R1223N332F-TR-FE
LCSC Part #
C2442003
Packaging
SOT-23-5
Customer #
Key Attributes
1 Fixed 3.3V Step-down type SOT-23-5 DC DC Switching Controllers RoHS
Datasheetpdf iconNisshinbo Micro Devices Inc. R1223N332F-TR-FE
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1+$ 0.2375$ 0.24
200+$ 0.092$ 18.40
500+$ 0.0887$ 44.35
1,000+$ 0.0871$ 87.10
Standard Packaging3000/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerNisshinbo Micro Devices Inc.
PackagingSOT-23-5
Operating Temperature-40℃~+85℃
Synchronous RectifierNo
Output Current-
FeaturesLight load efficient mode;Protection latch
Number of Channels1
TopologyBuck
Frequency - Switching500kHz
Operating Voltage2.3V~13.2V
Output TypeFixed
Switch tube (built-in/external)External
Output Voltage3.3V
FunctionStep-down type
Quiescent Current140uA
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Introduction

AI Translation

The R1223N Series are CMOS-based PWM step-down DC/DC Converter controllers with low supply current. Each of these ICs consists of an oscillator, a PwM control circuit, a reference voltage unit, an error amplifier, a soft-start circuit, a protection circuit, a PWM/VFM alternative circuit, a chip enable circuit, and resistors for voltage detection. A low ripple, high efficiency step-down DC/DC converter can be easily composed of this IC with only four external components, or a power-transistor, an inductor, a diode and a capacitor. With a PWM/VFM alternative circuit, when the load current is small, the operation is automatically switching into the VFM oscillator from PWM oscillator, therefore the efficiency at small load current is improved. The R1223NxxxB type, which is without a PWM/VFM alternative circuit, is also available. If the term of maximum duty cycle keeps on a certain time, the embedded protection circuit works. There are two types of protection function. One is latch-type protection circuit, and it works to latch an external Power MOSFET with keeping it disable. To release the condition of protection, after disable this IC with a chip enable circuit, enable it again, or restart this IC with power-on. The other is Reset-type protection circuit, and it works to restart the operation with soft-start and repeat this operation until maximum duty cycle condition is released. Either of these protection circuits can be designated by users' request.

Features

AI Translation
  • Input Voltage Range: 2.3V to 13.2V
  • Output Voltage Range: 1.5V to 5.0V (0.1V step)
  • Output Voltage Accuracy: ±2.0%
  • Oscillator Frequency: 300kHz, 500kHz
  • High Efficiency: Typ. 90%
  • Standby Current: Typ. 0μA
  • Temperature-Drift Coefficient of Output Voltage: Typ. ±100ppm/°C
  • Built-in Soft-start Circuit
  • Built-in Latch-type or Reset type Protection Circuit
  • Package: SOT-23-5

Applications

AI Translation
  • Power source for hand-held communication equipment, cameras, video instruments such as VCRs, camcorders.
  • Power source for battery-powered equipment.
  • Power source for household electrical appliances.