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參數(shù)資料
| 型號： | RH5RE40AAT2 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 固定正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 4 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3 |
| 封裝： | SOT-89, 3 PIN |
| 文件頁數(shù)： | 11/23頁 |
| 文件大小： | 570K |
| 代理商： | RH5RE40AAT2 |
Rx5RE
19
CURRENT BOOST CIRCUIT
Output current of 120mA or more can be obtained
by the current boost circuit constructed as shown in
this circuit diagram.
CURRENT BOOST CIRCUIT WITH OVERCURRENT LIMIT CIRCUIT
CURRENT SOURCE
A current source with the structure as shown in
this circuit diagram can be used. Output Current
IOUT is obtained as follows :
IOUT=Vreg /R + ISS
Take care that Output Current IOUT does not exceed
its allowable current.
C2
GND
Rx5RE
SERIES
VOUT
C1
VIN
Tr.1
+
C2
GND
Rx5RE
SERIES
VOUT
VIN
Tr.1
Tr.2
R1
R2
IOUT
Vbe2
+
GND
Rx5RE
SERIES
C1
VIN
R
IOUT
ISS
VOUT
+
A circuit for protecting Tr.1 from the destruction
caused by output short-circuit or overcurrent is shown in
this circuit diagram.
When the voltage reduction caused by the current ( aa
IOUT) which flows through R2 reaches Vbe2 of Tr.2 by
additionally providing the current boost circuit with Tr.2
and R2, Tr.2 is turned ON and the base current of Tr.1 is
increased, so that the output current is limited.
Current limit of Overcurrent Limit Circuit is obtained
as follows :
IOUT
Vbe2/R2
*1) Vreg : Set Output Voltage of Rx5RE Series.
*1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RH5RE31AA-T2-FA | 3.1 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3 |
| RE5RE31AC-RF-FC | 3.1 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PBCY3 |
| RE5RE31AC-RR-FC | 3.1 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PBCY3 |
| RH5RE31AA-T2-FB | 3.1 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3 |
| RH5RE28AA-T2-FA | 2.8 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RH5RE40AA-T2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VOLTAGE REGULATOR FOR MIDDLE OUTPUT CURRENT |
| RH5RE40AA-TZ | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VOLTAGE REGULATOR FOR MIDDLE OUTPUT CURRENT |
| RH5RE40AC | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VOLTAGE REGULATOR FOR MIDDLE OUTPUT CURRENT |
| RH5RE40AC-RF | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VOLTAGE REGULATOR FOR MIDDLE OUTPUT CURRENT |
| RH5RE40AC-RR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VOLTAGE REGULATOR FOR MIDDLE OUTPUT CURRENT |
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