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参数资料
| 型号： | RV5VE001S-E1 |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | 0.65 MM PITCH, SSOP-16 |
| 文件页数： | 10/49页 |
| 文件大小： | 321K |
| 代理商： | RV5VE001S-E1 |
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17
Regulators 1,2
OPERATION
ROUT4
IBC1,2
VDD
R2
R1
GND
CSW1,2
Level
Shift
ROUT1,2
Current
Limit
Circuit
Vref
+
–
C1,2
Each of Regulators 1 and 2 is operating with an external PNP transistor as shown in the above figure.
Regulators 1 and 2 divide Output Voltage VOUT by Feed-back Registers R1 and R2, and the divided voltage at the
node between Registers R1 and R2 is compared with the reference voltage by Error Amplifier, so that the base cur-
rent of the PNP transistor is adjusted, and a constant voltage is output. The output current from each of
Regulators 1 and 2 is monitored by Current Limitter, and when the output current exceeds a limit current,
Current Limitter limits the base current of the PNP transistor to the specified limit current.
The level of input signals to CSW 1, 2 is set at the same level as the output voltage level of ROUT4 by built-in
level shift circuit.
Phase compensation is made externally with C1,2.
Regulators 3,4
Vref
CSW3
ROUT4
VDD
R2
R1
GND
A
ROUT3,4
Current
Limit
Circuit
Level
Shift
+
–
Regulators 3 and 4 divide Output Voltage VOUT by feed-back Registers R1 and R2, and the divided voltage at
the node between Registers R1 and R2 is compared with the reference voltage by Error Amplifier, so that a con-
stant voltage is output. The output current from each of Regulators 3 and 4 is monitored by Current Limitter, and
when the output current exceeds a limit current, Current Limitter limits the output current to the limit current.
Regulator 4 is connected at Point to the GND in the above figure, so that Regulator 4 is always in operation.
The level of input signals to CSW1, 2 is set at the same level as the output voltage level of ROUT4 by built-in lev-
el shift circuits.
RV5VE0
×××
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