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Special Contents for Automotive Applications
Electrification of automobile by RICOH power management IC
The reason RICOH power management IC has been chosen for more than 20 years
Special Contents for IoT Devices
Supporting your IoT system construction
Ultra-low supply current / Low noise / Low electromotive force / Battery monitoring
Special Contents for Industrial Applications
RICOH's 3 approaches to industrial equipment field
Long term supply / Flexible quantity purchase / High quality and reliability
Design Support
Technical Information on Power Management ICs
Small in Size, Efficient in Heat Dissipation and Suitable for Automotive.
Ricoh's Thermal Design Support
You can analyze thermal characteristics at customer's concept design stage
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About RICOH Electronic Devices
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Technical Support
The R1210 Series are low supply current, CMOS-based PWM step-up DC/DC converters. By simply using an inductor, a diode, and a capacitor as external components, a high-efficiency step-up DC/DC converter can be easily configured. The xx1 version with an internal output transistor and the xx2 version with an external transistor are available. The oscillator frequency can be selected from 100kHz or 180kHz. The xx1A version is also available, which contains a basic frequency changeover circuit that switches the oscillator frequency from 100kHz to 35kHz when output load is reduced. R1210 also has a function that detects drastic changes in output voltage and reduces the amount of overshoot/undershoot by switching control mode.
Input Voltage Range (Maximum Rating) | Max. 8.0 V (9.0 V) |
---|---|
Standby Current | Max. 0.5 µA |
Temperature-Drift Coefficient of Output Voltage | Typ. ±100 ppm/°C |
Output Voltage Range | 2.2 V to 3.5 V (0.1V steps) (R1210Nxx1A) 2.2 V to 6.0 V (0.1V steps) (R1210NxxxC/D) |
Oscillator Frequency | 100 kHz (R1210Nxx1A, R1210NxxxC) 180 kHz (R1210NxxxD) |
Output Voltage Accuracy | ±2.5% |
Package | SOT-23-5 |
Efficiency | Typ. 88% (VIN=Set Output Voltage×0.6 [V], IOUT=10mA) |
Start-up Voltage | Max. 0.9 V (R1210Nxx1x), Max. 0.8 V (R1210Nxx2x) |
Basic Frequency change-over circuit (only for xx1A type) | from Typ. 100 kHz to 35 kHz |
R1210Nxx1x
L: 100µH, CL: 22µFx2
R1210Nxx2x
L: 27µH, CL: 47µF×2, Rb: 300Ω, Cb: 0.01µF
R1210N301C Efficiency vs. Output Current
R1210N302C Efficiency vs. Output Current
SOT-23-5
1 | CE |
2 | VOUT |
3 | NC |
4 | GND |
5 | Lx or EXT |
APPLICATIONS
The OVP threshold voltage, and the package for the ICs can be selected at the user's request.
Product Name | Package | Quantity per Reel | |
---|---|---|---|
R1210Nxx#$-TR-FE | ![]() |
SOT-23-5 | 3,000 |
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Technical Support
Package *1 | Marking | Reliability *2 |
---|---|---|
SOT-23-5 | R1210N | R1210N (-FE) |
*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.
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