= 25°C, unless otherwise specified. The Boldface applies
over the junction temperature range. Adjustable versions are set to 5.0V.
PARAMETER
Output Leakage
Current
Output Low Voltage
Upper Threshold
Voltage
Lower Threshold
Voltage
Hysteresis
ENABLE Input
Input Logic Voltage
Low (OFF)
High (ON)
ENABLE Input Pin
V
IN
<10V
2.4
V
EN
=16V
V
EN
=0.8V
Regulator Output
Current in Shutdown
Thermal Resistance
(Note 10)
TO-200 Junction to Case, at Tab
TO-220 Junction to Ambient
TO-263 Junction to Case, at Tab
TO-263 Junction to Ambient
10
3
60
3
60
100
600
750
1
2
500
μA
μA
μA
°C/W
CONDITIONS
V
OH
=16V
Device set for 5V,V
IN
=4.5V, I
OL
=250μA
Device set for 5V, (Note 9)
Device set for 5V, (Note 9)
Device set for 5V, (Note 9)
TYP
0.01
220
60
75
15
SPX29301/02
0.8
V
40
25
95
140
MIN
MAX
1
2
300
400
UNITS
μA
mV
mV
mV
mV
FLAG OUTPUT (ERROR COMPARATOR)
SPX29301/03
NOTES:
Note 1: Maximum positive supply voltage of 20V must be of limited duration (<100ms) and duty cycle of less than 1%. The maximum continuous supply
voltage is 16V.
Note 2: Full load current (I
FL
) is defined as 3.0A.
Note 3: Dropout voltage is defined as the input to output differential when the output voltage drops to 99% of its nominal value.
Note 4: V
IN
= V
OUT (NOMINAL)
+1V. For example, use V
IN
= 4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.
Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current to the ground current.
Note 6: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range
Note 7: Thermal regulation is defined as the change in output voltage at time T after a change in power dissipation is applied, excluding load / line regulation effects.
Specifications for a 200mA load pulse as V
IN
= 20V (a 4W pulse) for t = 10ms.
Note 8: V
REF
≤
V
OUT
≤
(V
IN
-1), 2.3V≤V
IN
≤
16V, 10mA
≤
I
L
≤
I
FL
, T
j
< T
jmax
.
Note 9: Comparator threshold is expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured 6V input. To
express these thresholds in terms of output voltage change, multiply the error amplifier gain = V
OUT
/V
REF
= (R1 + R2)/R2. For example, at a programmable
output voltage of 5V, the Error output is guaranteed to go low when the output drops by 95mVx 5V/ 1.240V = 38mV. Threshold remain constant as a percent of
V
OUT
as V
OUT
is varied, with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed.
Note 10: V
EN
≤
0.8V and V
IN
≤
16V, V
OUT
= 0.
BLOCK DIAGRAM
IN
O.V
I
LIMIT
FLAG
+
-
1.180V
Reference
1.240V
+
-
ADJ
EN
Thermal
Shutdown
28V
R1*
OUT
R2*
GND
Date: 9/5/06 Rev C
SPX29300/01/02/03 3A Low Dropout Voltage Regulator
便携式数字数据采集系统（PDDAS）使用了LabVIEW实时模块和PXI，以控制风洞测试和采集记录来自128个不同通道的空气压力数据 "通过LabVIEW实时模块，可以在各种操作情况下获得采集空气压力数据及向风洞提供反馈控制信号所需的确定性响应时间。" – Dave Scheibenhoffer, G Systems 挑战: 用一个可采集、分析和存储来自下一代喷气式战斗机引擎设计的动...[详细]
传感器
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