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參數(shù)資料
| 型號： | TK73200 |
| 廠商： | TOKO Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 92K |
| 代理商： | TK73200 |
June 1999 TOKO, Inc.
Page 11
TK73200
VOLTAGE BACKUP OPERATION (HOLDUP TIME)
C
L
becomes the backup power supply when the
microprocessor is reset with the voltage detector IC
simultaneously with turning OFF the TK73200. C
L
provides
the holdup time necessary to do an orderly shutdown of the
microprocessor.
EXTERNAL PNP POWER TRANSISTOR
This IC can use any kind of external transistor. The external transistor selection is a function of the load current, H
fe
and
power dissipation. See following chart:
LOAD CURRENT
RECOMMENDED EXTERNAL TRANSISTOR
RECOMMENDED R
IPK
(
)
0 ~ 180 mA
2SB624, 2SB1115, 2SB799 (NEC), 2SB970 (Matsushita)
0.33 ~ 0.39
0 ~ 300 mA
2SB1115, 2SB799 (NEC)
0.22 ~ 0.27
0 ~ 500 mA
2SB1114, 2SB1115 (NEC), 2SB1302 (Sanyo), 2SA1203,
2SA1213, 2SA1734 (Toshiba)
0.12 ~ 0.15
0 ~ 1 A
2SA1242, 2SA1736 (Toshiba), 2SB1302, 2SA1896 (Sanyo)
0.056 ~ 0.068
0 ~ 2 A
2SA1451, 2SA1242 (Toshiba)
0.033 ~ 0.039
0 ~ 3 A
2SA1451 (Toshiba), 2SA1645 (NEC)
0.022 ~ 0.027
0 ~ 4 A
2SA1451 (Toshiba), 2SB904 (Sanyo), 2SA1645 (NEC)
0.012 ~ 0.015
APPLICATION INFORMATION (CONT.)
73200
VOUT
VIN
VCONT OFF
VOIC
μ PRO
RESET
CL
R2
R1
PARALLEL ON/OFF CONTROL OPERATION
The figure above illustrates multiple regulators being
controlled by a single ON/OFF control signal. The series
resistor R is put in the input line of the low output voltage
regulator in order to prevent overdissipation. The voltage
dropped across the resistor reduces the large input-to-
output voltage across the regulator, reducing the power
dissipation in the device.
12 V
TK73200
5 V
VIN
ON/OFF
13 V
TK11230B
TK11220B
R
R2
R1
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PDF描述 |
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| TK73200M | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| TK73200MCL | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| TK73242 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| TK73221MILH | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TK73200M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:ADJUSTABLE LOW DROPOUT REGULATOR |
| TK73200MCL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:ADJUSTABLE LOW DROPOUT REGULATOR |
| TK73200MCL/C00 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:ADJUSTABLE LOW DROPOUT REGULATOR |
| TK73211 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
| TK73211M | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
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