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參數(shù)資料
| 型號(hào)： | SPX2945M3 |
| 英文描述： | 500mA Low Drop Out Voltage Regulator with Shutdown |
| 中文描述： | 500mA的低壓差與關(guān)斷穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 5/11頁(yè) |
| 文件大小： | 101K |
| 代理商： | SPX2945M3 |
3
Rev. B Date:01/20/04
SPX2945 400mA Low Dropout Voltage Regulator with Shutdown
Copyright 2004 Sipex Corporation
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
(Note 2)
Feedback Pin Bieas Current
0.1
nA/°C
Temperature Coefficient
Output Leakage Current
V0H=20V
0.01
1
A
2
Output Low Voltage
VIN=4.5V
150
250
mV
I0L=400A
400
Upper Threshold Voltage
(Note 6)
40
60
mV
25
Lower Threshold Voltage
(Note 6)
75
95
mV
140
Hysteresis
(Note 6)
15
mV
Input Logic Voltage
Low (Regulator ON)
0.7
V
High (Regulator OFF)
1.3
2.0
Shutdown Pin Input Current
VS=2.4V
30
50
A
100
VS=26V
450
600
750
Regulator Output Current
(Note 7)
10
3
A
in Shutdown
20
ELECTRICAL CHARACTERISTICS: Continued
Electrical characteristics at V
IN = VO+1V, IO = 1mA, COUT = 2.2F, TA = 25°C, unless otherwise specified. applies over the
full operating temperature range.
Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by
the total temperature range.
Note 2: Unless otherwise specified all limits are guaranteed for T
j = 25°C, VIN = 6V, IL = 1mA and CL = 2.2F. Additional
conditions for the 8-pin versions are feedback tied to 5V/3.3V tap and output tied to output sense (V
OUT = 5V) and
V
SHUTDOWN ≤ 0.8V.
Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes
in output voltage due to heating effects are covered under the specification for thermal regulation.
Note 4: Line regulation for the SPX2945 is tested at 150°C for I
L = 1 mA. For TJ = 125°C, line regulation is guaranteed
by design.
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below
its nominal value measured at 1V differential at very low values of programmed output voltage, the minimum input
supply voltage of 2V ( 2.3V over temperature) must be taken into account.
Note 6: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the
nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage change,
multiply by the error amplifier gain = V
OUT/VREF = (R1 + R2)/R2. For example, at a programmed output voltage of 5V,
the Error output is guaranteed to go low when the output drops by 95 mV x 5V/1.235 = 384 mV. Thresholds remain
constant as a percent of V
OUT as VOUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.5%
guaranteed.
Note 7: V
SHUTDOWN ≥ 2V, VIN ≤ 26V, VOUT = 0, Feedback pin tied to 5V/3.3V Tap.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPX2945M3-3.3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown |
| SPX2945M3-3-3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:400mA Low Dropout Voltage Regulator with Shutdown |
| SPX2945M3-3-3TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:400mA Low Dropout Voltage Regulator with Shutdown |
| SPX2945M3-5.0 | 制造商:Exar Corporation 功能描述: |
| SPX2945M3-5-0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:400mA Low Dropout Voltage Regulator with Shutdown |
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