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參數資料
| 型號： | SPX2946T5-3.3 |
| 英文描述： | 500mA Low Drop Out Voltage Regulator with Shutdown |
| 中文描述： | 500mA的低壓差與關斷穩(wěn)壓器 |
| 文件頁數： | 3/11頁 |
| 文件大小： | 101K |
| 代理商： | SPX2946T5-3.3 |
3
Rev. B Date:01/20/04
SPX2945 400mA Low Dropout Voltage Regulator with Shutdown
Copyright 2004 Sipex Corporation
PARAMETER CONDITIONS MIN TYP
(Note 2)
Feedback Pin Bieas Current
Temperature Coefficient
Output Leakage Current
V
0H
=20V
MAX
UNITS
0.1
nA/
°
C
0.01
1
μ
A
2
150
250 mV
400
mV
Output Low Voltage
V
IN
=4.5V
I
0L
=400
μ
A
(Note 6) 40 60
25
(Note 6)
Upper Threshold Voltage
Lower Threshold Voltage
75
95 mV
140
15
0.7
V
1.3
2.0
30
50
μ
A
100
450
600
750
Hysteresis
Input Logic Voltage
(Note 6)
Low (Regulator ON)
High (Regulator OFF)
VS=2.4V
mV
Shutdown Pin Input Current
VS=26V
Regulator Output Current
in Shutdown
(Note 7) 10 3
20
μ
A
ELECTRICAL CHARACTERISTICS: Continued
Electrical characteristics at V
= V
O
+1V, I
O
= 1mA, C
OUT
= 2.2
μ
F, T
A
= 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
= 25
°
C, V
= 6V, I
= 1mA and C
= 2.2
μ
F. 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
≤
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 T
J
= 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
/V
= (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 V
OUT
is varied, with the dropout warning occurring at typically 5% below nominal, 7.5%
guaranteed.
Note 7:
V
SHUTDOWN
≥
2V, V
IN
≤
26V, V
OUT
= 0, Feedback pin tied to 5V/3.3V Tap.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SPX2946T5-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown |
| SPX2946U3-3.3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown |
| SPX2946U3-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown |
| SPX2946U5-3.3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown |
| SPX2946U5-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:500mA Low Drop Out Voltage Regulator with Shutdown |
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