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參數(shù)資料
| 型號： | TK73200MCL |
| 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： | 2 V-12 V ADJUSTABLE POSITIVE LDO REGULATOR, PDSO8 |
| 封裝： | SOT-23L, 8 PIN |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 92K |
| 代理商： | TK73200MCL |
June 1999 TOKO, Inc.
Page 7
TK73200
DEFINITION AND EXPLANATION OF TECHNICAL TERMS
OUTPUT VOLTAGE (V
OUT
)
The output voltage is specified with V
IN
= (V
OUT(TYP)
+ 1 V)
and I
OUT
= 30 mA.
DROPOUT VOLTAGE (V
DROP
)
The dropout voltage is the difference between the input
voltage and the output voltage at which point the regulator
starts to fall out of regulation. Below this value, the output
voltage will fall as the input voltage is reduced. It is
dependent upon the load current, the external transistor
and the junction temperature.
BASE CONTROL CURRENT (I
BASE
)
The base control current is the drive current for the base of
the external transistor.
OUTPUT CURRENT (I
OUT
)
The output current depends on the characteristics of the
external transistor and current limit setting.
LINE REGULATION (Line Reg)
Line regulation is the ability of the regulator to maintain a
constant output voltage as the input voltage changes. The
line regulation is specified as the input voltage is changed
from V
IN
= V
OUT(TYP)
+ 1 V to V
IN
= V
OUT(TYP)
+ 6 V.
LOAD REGULATION (Load Reg)
Load regulation is the ability of the regulator to maintain a
constant output voltage as the load current changes. It is
a pulsed measurement to minimize temperature effects.
Load regulation depends on the external transistor.
QUIESCENT CURRENT (I
Q
)
The quiescent current is the current which flows through
the ground terminal under no load conditions (I
OUT
= 0 mA)
and excludes the control pin current.
GROUND CURRENT (I
GND
)
Ground current is the current which flows through the
ground pin(s). It is defined as I
IN
- I
OUT
, excluding control
current.
RIPPLE REJECTION RATIO (RR)
Ripple rejection is the ability of the regulator to attenuate
the ripple content of the input voltage at the output. It is
specified with 100 mVrms, 400 Hz superimposed on the
input voltage, where V
IN
= V
OUT(TYP)
+ 1.5 V. The output
decoupling capacitor is set to 10
μ
F, the noise bypass
capacitor is set to 0.1
μ
F, and the load current is set to
30 mA. Ripple rejection is the ratio of the ripple content of
the output vs. the input and is expressed in dB.
STANDBY CURRENT (I
STBY
)
Standby current is the current which flows into the regulator
when the output is turned off by the control function
(V
CONT
= 0 V). It is measured with V
IN
= 8 V.
SENSOR CIRCUITS
Overcurrent Sensor
The overcurrent sensor protects the device if the output is
shorted to ground.
Thermal Sensor
The thermal sensor protects the device if the junction
temperature exceeds the safe value (T
j
= 150
°
C). This
temperature rise can be caused by extreme heat, excessive
power dissipation caused by large output voltage drops, or
excessive output current. The regulator will shut off when
the temperature exceeds the safe value. As the junction
temperature decreases, the regulator will begin to operate
again. Under sustained fault conditions, the regulator
output will oscillate as the device turns off then resets.
Damage may occur to the device under extreme fault
conditions.
Reverse Voltage Protection
Reverse voltage protection prevents damage due to the
output voltage being higher than the input voltage. This
fault condition can occur when the output capacitor remains
charged and the input is reduced to zero, or when an
external voltage higher than the input voltage is applied to
the output side.
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相關(guān)代理商/技術(shù)參數(shù) |
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| 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 |
| TK73211MCLH | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
| TK73211MCLH/11 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT REGULATOR |
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