CMOS 2ch-LDOs for RF Unit
The R5321D Series are CMOS-based 2 channels voltage regulator ICs with high output voltage accuracy,
extremely low supply current, low noise, low ON-resistance and high ripple rejection. The R5321D Series
contain two voltage regulators. Each of these voltage regulators in the R5321D Series consists of a voltage
reference unit, an error amplifier, resistors for setting output voltage, a current limit circuit and a chip
enable
circuit.
The chip enable function contributes to prolong battery life. Further, regulators in the R5321D Series are with
low dropout voltage, excellent load transient response and line transient response, thus the R5321D Series are
very suitable for the power supply for hand-held communication equipment.
The output voltage of each regulator is fixed with high accuracy by laser trim.
Since the package for these ICs is SON-8 package, high density mounting of the ICs on boards is possible. |
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 Low
Supply Current |
Typ. 70µA (VR1, VR2) |
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| Low
Standby Current |
Typ. 0.1µA (VR1, VR2) |
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| Low
Dropout Voltage |
Typ. 0.23V (VR1) (IOUT=150mA,VOUT=3.0V)
Typ. 0.17V (VR2) (IOUT=150mA,VOUT=3.0V) |
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| Input
Voltage |
Max. 6.0V |
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| High
Ripple Rejection |
Typ. 70dB (f=1kHz) |
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| High
Output Voltage Accuracy |
±2.0% |
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| Excellent
Load Transient Response and Line Transient Response |
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| Small
Package |
SON-8 |
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Power source for cellular phones such as GSM, CDMA and Personal Handy-phone
System. |
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Power source for electrical appliances such as cameras, VCRs, camcorders, etc. |
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Power source for battery-powered equipment.
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| * All PDF files are less than 1MB unless otherwise stated. |
| * If you don't have Adobe Reader, you can download free. |
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Please confirm sample availability with your local contact mentioned in our distributors
list.
| R5321D |
VR1 |
VR2 |
| 001A |
2.8 |
2.8 |
| 002A |
2.9 |
2.9 |
| 003A |
3 |
3 |
| 004A |
3.3 |
3.3 |
| 005A |
2.6 |
2.6 |
| 006A |
2.7 |
2.7 |
| 007A |
2.8 |
3 |
| 008A |
2.5 |
2.5 |
| 009A |
2.5 |
2.8 |
| 010A |
3.1 |
1.8 |
| 011A |
3 |
3.1 |
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Technical Info.
Technical Information on Ricoh Power Management ICs.
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Product Catalog
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| Selection guide is available for download in PDF format. |
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R5321D
Series
