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| RH5RH | ||
ELECTRICAL CHARACTERISTICS |
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• RH5RH301A |
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| VOUT=3.0V | |||
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Symbol |
| Item | Conditions | MIN. | TYP. | MAX. | Unit |
| Note |
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VOUT |
| Output Voltage |
| 2.925 | 3.000 | 3.075 | V |
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VIN |
| Input Voltage |
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| 8 | V |
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| IOUT=1mA,VIN : 0→2V |
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Vstart |
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| 0.8 | 0.9 | V |
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| IOUT=1mA,VIN : 2→0V |
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Vhold |
| 0.7 |
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| V |
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| To be measured at OUT Pin |
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IDD1 |
| Supply Current 1 |
| 15 | 25 | µA |
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| (excluding Switching Current) |
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| To be measured at OUT Pin |
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IDD2 |
| Supply Current 2 | (excluding Switching Current) |
| 2 | 5 | µA |
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| VIN=3.5V |
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ILX |
| Lx Switching Current | VLX=0.4V | 60 |
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| mA |
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ILXleak |
| Lx Leakage Current | VLX=6V,VIN=3.5V |
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| 0.5 | µA |
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fosc |
| Oscillator Frequency |
| 40 | 50 | 60 | kHz |
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Maxdty |
| Oscillator Maximum Duty | on (VLX “L” ) side | 70 | 80 | 90 | % |
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| Cycle |
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η |
| Efficiency |
| 70 | 85 |
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| Time required for the rising |
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tstart |
| 0.5 | 2.0 |
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| Note1 |
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| of VOUT up to 3V. |
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VLXlim |
| VLX Voltage Limit | Lx Switch ON | 0.65 | 0.8 | 1.0 | V |
| Note2 |
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Unless otherwise provided, VIN=1.8V, VSS=0V, IOUT=10mA, Topt=25˚C, and use External Circuit of Typical
Application (FIG. 1).
(Note 1)
(1)VIN is applied.
(2)The voltage (Vref) of the reference voltage unit is maintained at 0V for about 200µs after the application of VIN.
(3)The output of Error Amp. is raised to “H” level during the maintenance of the voltage (Vref) of the reference voltage unit.
(4)After the rise of Vref, the output of Internal Error Amp. is gradually decreased to an appropriate value by the function of Internal Phase Compensation Circuit, and the Output Voltage is gradually increased in accordance with the gradual decrease of the output of Internal Error Amp.
(Note 2) ILX is gradually increased after Lx Switch is turned ON. In accordance with the increase of ILX, VLX is also increased. When VLX reaches VLXlim, Lx Switch is turned OFF by an Lx Switch Protection Circuit.
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