參數(shù)資料
型號： SI91872DMP-50-T1
廠商： Vishay Intertechnology,Inc.
元件分類： 基準電壓源/電流源
英文描述： 300-mA Low-Noise LDO Regulator With Error Flag and Discharge Option
中文描述： 300 - mA的低噪音LDO調(diào)節(jié)器錯誤國旗和放電期權
文件頁數(shù)： 3/9頁
文件大?。?/td> 115K
代理商： SI91872DMP-50-T1
Si91872
Vishay Siliconix
Document Number: 72013
S-51147—Rev. F, 20-Jun-05
www.vishay.com
3
SPECIFICATIONS
Limits
40 to 85 C
Temp
a
Test Conditions Unless Specified
C
IN
= 2 F, C
OUT
= 2.0 F, V
SD
= 1.5 V
Parameter
Unit
Max
b
Typ
c
Min
b
T
A
= 25 C, V
IN
= V
OUT(nom)
+ 1 V, I
OUT
= 1 mA,
Symbol
f = 1 kHz
f = 10 kHz
f = 100 kHz
Room
Room
Room
60
40
30
Ripple Rejection
V
/ V
OUT
I
= 300 mA
OUT
dB
IN
Dynamic Line Regulation
V
O(line)
V
IN
: V
OUT(nom)
+ 1 V to V
+ 2 V
r
f
OUT
= 300 mA
I
OUT
: 1 mA to 300 mA, t
r
/t
f
= 2 s
Room
20
mV
Dynamic Load Regulation
Thermal Shutdown Junction
Temperature
Thermal Hysteresis
Reverse current
Short Circuit Current
Shutdown
V
O(load)
Room
25
T
J(S/D)
Room
150
C
T
HYST
I
R
I
SC
Room
Room
Room
20
1
700
V
IN
=
6.0 V
V
OUT
= 0 V
A
mA
Shutdown Supply Current
I
CC(off)
V
SD
= 0 V
Room
Full
Full
Room
0.1
1
A
SD Pin Input Voltage
V
SD
High = Regulator ON (Rising)
Low = Regulator OFF (Falling)
Si91872 Only
1.5
V
IN
0.4
V
Auto Discharge Resistance
SD Pin Input Current
f
SD Hysteresis
R_DIS
100
I
IN(SD)
V
HYST(SD)
t
ON
V
SD
= 1.5 V, V
IN
= 6 V
Room
Full
0.7
150
A
mV
V
OUT
Turn-On Time
ERROR Output
V
SD
(See Figure 1), I
LOAD
= 100 mA
Room
50
s
ERROR High Leakage
I
OFF
V
OL
ERROR
V
IN
. V
OUT
in Regulation
I
SINK
= 0.5 mA
V
Below V
OUT(nom)g
, V
IN
V
OUT
Falling, I
OUT
= 1 mA, V
OUT(nom)
V
OUT(nom)g
Full
1
A
ERROR Low Voltage
Full
0.4
V
ERROR Voltage Threshold
V
ERROR
2 V
2 V
Full
2
4
6
2 V, V
IN
2 V
Full
4
%
ERROR Voltage Threshold
Hysteresis
V
HYST(ERROR)
Room
1.5
Notes
a.
b.
c.
d.
Room = 25 C, Full =
40 to 85 C.
The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Dropout voltage is defined as the input to output differential voltage at which the output voltage drops 2% below the output voltage measured with a 1-V
differential, provided that V
does not not drop below 2.0 V.
Ground current is specified for normal operation as well as “drop-out” operation.
The device’s shutdown pin includes a typical 2-M internal pull-down resistor connected to ground.
V
OUT(nom)
is V
OUT
when measured with a 1-V differential to V
IN
.
e.
f.
g.
TIMING WAVEFORMS
FIGURE 1.
Timing Diagram for Power-Up
V
SD
0.95 V
NOM
V
OUT
V
NOM
t
ON
0 V
V
IN
t
r
1 S
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