參數(shù)資料
型號(hào): LP2950-33LP
廠商: Texas Instruments, Inc.
英文描述: ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN
中文描述: 可調(diào)微功耗電壓調(diào)節(jié)器具有關(guān)斷
文件頁(yè)數(shù): 5/26頁(yè)
文件大?。?/td> 2721K
代理商: LP2950-33LP
www.ti.com
Electrical Characteristics
V
IN
= V
OUT
(nominal) + 1 V, I
L
= 100
μ
A, C
L
= 1
μ
F (5-V versions) or C
L
= 2.2
μ
F (3-V and 3.3-V versions),
8-pin version: FEEDBACK tied to V
TAP
, OUTPUT tied to SENSE, V
SHUTDOWN
0.7 V
LP2950
,
LP2951
ADJUSTABLE MICROPOWER VOLTAGE REGULATORS
WITH SHUTDOWN
SLVS582D–APRIL 2006–REVISED MARCH 2007
PARAMETER
TEST CONDITIONS
T
J
MIN
TYP
MAX
UNIT
3-V VERSION (LP295x-30)
25
°
C
2.970
2.940
3
3
3.030
3.060
V
OUT
Output voltage
I
L
= 100
μ
A
V
–40
°
C to 125
°
C
3.3-V VERSION (LP295x-33)
25
°
C
3.267
3.234
3.3
3.3
3.333
3.366
V
OUT
Output voltage
I
L
= 100
μ
A
V
–40
°
C to 125
°
C
5-V VERSION (LP295x-50)
25
°
C
4.950
4.900
5
5
5.050
5.100
V
OUT
Output voltage
I
L
= 100
μ
A
V
–40
°
C to 125
°
C
ALL VOLTAGE OPTIONS
Output voltage temperature
coefficient
(1)
I
L
= 100
μ
A
–40
°
C to 125
°
C
20
100
ppm/
°
C
25
°
C
0.03
0.2
0.4
0.2
0.3
80
150
450
600
120
140
12
14
170
200
200
220
0.2
Line regulation
(2)
V
IN
= [V
OUT(NOM)
+ 1 V] to 30 V
%/V
–40
°
C to 125
°
C
25
°
C
–40
°
C to 125
°
C
25
°
C
–40
°
C to 125
°
C
25
°
C
–40
°
C to 125
°
C
25
°
C
–40
°
C to 125
°
C
25
°
C
–40
°
C to 125
°
C
25
°
C
–40
°
C to 125
°
C
25
°
C
–40
°
C to 125
°
C
25
°
C
0.04
Load regulation
(2)
I
L
= 100
μ
A to 100 mA
%
50
I
L
= 100
μ
A
V
IN
– V
OUT
Dropout voltage
(3)
mV
380
I
L
= 100 mA
75
I
L
= 100
μ
A
μ
A
I
GND
GND current
8
I
L
= 100 mA
mA
110
V
IN
= V
OUT(NOM)
– 0.5 V,
I
L
= 100
Dropout ground current
μ
A
160
Current limit
V
OUT
= 0 V
mA
Thermal regulation
(4)
I
L
= 100
μ
A
C
L
= 1
μ
F (5 V only)
C
L
= 200
μ
F
LP2951-50: C
L
= 3.3
μ
F,
C
= 0.01
μ
F between pins 1
and 7
0.05
430
160
%/W
Output noise (RMS),
10 Hz to 100 kHz
25
°
C
μ
V
100
(LP2951-xx) 8-PIN VERSION ONLY ADJ
25
°
C
1.218
1.212
1.235
1.252
1.257
–40
°
C to 125
°
C
Reference voltage
V
V
OUT
= V
to (V
IN
– 1 V),
V
IN
= 2.3 V to 30 V,
I
L
= 100
μ
A to 100 mA
–40
°
C to 125
°
C
1.200
1.272
Reference voltage
temperature coefficient
(1)
25
°
C
20
ppm/
°
C
(1)
(2)
Output or reference voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range.
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.
Dropout voltage is defined as the input-to-output differential at which the output voltage drops 100 mV, below the value measured at 1-V
differential. The minimum input supply voltage of 2 V (2.3 V over temperature) must be observed.
Thermal regulation is defined as the change in output voltage at a time (T) after a change in power dissipation is applied, excluding load
or line regulation effects. Specifications are for a 50-mA load pulse at V
IN
= 30 V, V
OUT
= 5 V (1.25-W pulse) for t = 10 ms.
(3)
(4)
5
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