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參數(shù)資料
| 型號(hào)： | LP3876 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 3A Fast Ultra Low Dropout Linear Regulators |
| 中文描述： | 3A條快速超低壓差線性穩(wěn)壓器 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 365K |
| 代理商： | LP3876 |
Electrical Characteristics
LP3873/LP3876 (Continued)
Limits in standard typeface are for T
J = 25C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: V
IN =VO(NOM) + 1.5V, IL = 10 mA, COUT = 10F, VSD = 2V.
Symbol
Parameter
Conditions
Typ
LP3873/6 (Note 5)
Units
Min
Max
SHUTDOWN INPUT
V
SDT
Shutdown Threshold
Output = High
V
IN
2
V
Output = Low
0
0.3
T
dOFF
Turn-off delay
I
L =3A
20
s
T
dON
Turn-on delay
I
L =3A
25
s
I
SD
SD Input Current
V
SD =VIN
1nA
ERROR FLAG
V
T
Threshold
10
516
%
V
TH
Threshold Hysteresis
5
28
%
V
EF(Sat)
Error Flag Saturation
I
sink = 100A
0.02
0.1
V
Td
Flag Reset Delay
1
s
I
lk
Error Flag Pin Leakage
Current
1nA
I
max
Error Flag Pin Sink
Current
V
Error = 0.5V
1mA
AC PARAMETERS
PSRR
Ripple Rejection
V
IN =VOUT + 1.0V
C
OUT = 10uF
V
OUT = 3.3V
73
dB
V
IN =VOUT + 0.5V
C
OUT = 10uF
V
OUT = 3.3V
57
ρ
n(l/f
Output Noise Density
f = 120Hz
0.8
V
e
n
Output Noise Voltage
BW = 10Hz – 100kHz
V
OUT = 2.5V
150
V (rms)
BW = 300Hz – 300kHz
V
OUT = 2.5V
100
Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is
intended to be functional, but does not guarantee specific performance limits. For guaranteed specifications and test conditions, see Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed
test conditions.
Note 2: At elevated temperatures, devices must be derated based on package thermal resistance. The devices in TO220 package must be derated at
θjA = 50C/W
(with 0.5in2, 1oz. copper area), junction-to-ambient (with no heat sink). The devices in the TO263 surface-mount package must be derated at
θjA = 60C/W (with
0.5in2, 1oz. copper area), junction-to-ambient. See Application Hints.
Note 3: The human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin.
Note 4: Typical numbers are at 25C and represent the most likely parametric norm.
Note 5: Limits are guaranteed by testing, design, or statistical correlation.
Note 6: If used in a dual-supply system where the regulator load is returned to a negative supply, the output must be diode-clamped to ground.
Note 7: The output PMOS structure contains a diode between the VIN and VOUT terminals. This diode is normally reverse biased. This diode will get forward biased
if the voltage at the output terminal is forced to be higher than the voltage at the input terminal. This diode can typically withstand 200mA of DC current and 1Amp
of peak current.
Note 8: Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage. Output voltage load
regulation is defined as the change in output voltage from the nominal value due to change in load current. The line and load regulation specification contains only
the typical number. However, the limits for line and load regulation are included in the output voltage tolerance specification.
Note 9: Error Flag threshold and hysteresis are specified as percentage of regulated output voltage. See Application Hints.
Note 10: Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. Dropout voltage
specification applies only to output voltages of 2.5V and above. For output voltages below 2.5V, the drop-out voltage is nothing but the input to output differential,
since the minimum input voltage is 2.5V.
Note 11: The minimum operating value for VIN is equal to either [VOUT(NOM) +VDROPOUT] or 2.5V, whichever is greater.
LP3873/LP3876
www.national.com
6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3876-ADJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3A Fast Ultra Low Dropout Linear Regulator |
| LP3876ES-1.8 | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3876ES-1.8/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3876ES-1.8/NOPB | 制造商:Texas Instruments 功能描述:Voltage Regulator IC |
| LP3876ES-2.5 | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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