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參數(shù)資料
| 型號： | TK73227M |
| 廠商： | TOKO Inc. |
| 元件分類： | 基準(zhǔn)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(hù) |
| 文件頁數(shù)： | 14/16頁 |
| 文件大小： | 117K |
| 代理商： | TK73227M |
Page 14
January 1999 TOKO, Inc.
TK732xx
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 TK732xx. C
L
provides
the holdup time necessary to do an orderly shutdown of the
microprocessor.
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.
APPLICATION INFORMATION (CONT.)
OUTPUT VOLTAGE ADJUST
When a highly accurate output voltage is necessary, the
output can be adjusted. As shown above, higher output
resolution can be achieved by putting a resistor (R
ADJ
) in
the V
SENSE
pin in parallel with a 1000 pF capacitor. A value
of 2 K provides an adjustment of 50 mV typically. Note:
using this technique, the output voltage can only be
adjusted higher.
BATTERY CHARGER
Continuous Current Limit Mode:
I
SET
(mA) = 100 (mV) / R
IPK
(
)
732xx
VOUT
VIN
VCONT OFF
VOIC
μ PRO
RESET
CL
12 V
TK732xx
5 V
5 A
VIN
ON/OFF
13 V
TK11230B
TK11220B
R
TK732xx
VOUT
VIN
VCONT
VSENSE
RADJ
1000 pF
VCONT
VIN
COLLECTOR
BASE
EMITTER
CL
RIPK
CONT
VADJ
LOAD
VOLTACIRCUIT
MICROPOR
B
REMOTE
CLIMIT
SENSING
CONT
VSENSE
VOUT
TEXTERNAL
TK732XX
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相關(guān)代理商/技術(shù)參數(shù) |
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| TK73227MCLH | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
| TK73227MCLH/27 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
| TK73227MILH | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
| TK73227MILH/27 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
| TK73228 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
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