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參數(shù)資料
| 型號： | SI91844DT-35-T1 |
| 廠商： | Vishay Intertechnology,Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 150-mA Low-Noise LDO Regulator With Error Flag and Discharge Option |
| 中文描述： | 150 - mA的低噪音LDO調(diào)節(jié)器錯誤國旗和放電期權(quán) |
| 文件頁數(shù)： | 3/9頁 |
| 文件大小： | 90K |
| 代理商： | SI91844DT-35-T1 |
Si91842/4
Vishay Siliconix
New Product
Document Number: 71732
S-20478
—
Rev. C, 01-Apr-02
www.vishay.com
3
SPECIFICATIONS
Limits
–
40 to 85 C
Typ
c
Temp
a
Test Conditions Unless Specified
C
IN
= 1 F, C
OUT
= 1.0 F, V
SD
= 1.5 V
Parameter
Unit
Max
b
Min
b
T
A
= 25 C, V
IN
= V
OUT(nom)
+ 1 V, I
OUT
= 1 mA,
Symbol
f = 1 kHz
Room
60
Ripple Rejection
V
/ V
OUT
I
= 150 mA
OUT
f = 10 kHz
f = 100 kHz
Room
Room
40
30
dB
IN
Dynamic Line Regulation
V
O(line)
V
IN
: V
OUT(nom)
+ 1 V to V
+ 2 V
r
f
OUT
= 150 mA
I
OUT
: 1 mA to 150 mA, t
r
/t
f
= 2 s
Room
20
mV
Dynamic Load Regulation
Thermal Shutdown Junction
Temperature
Thermal Hysteresis
V
O(load)
Room
25
T
J(S/D)
Room
150
C
T
HYST
I
R
I
SC
Room
20
Reverse current
V
IN
=
–
6.0 V
V
OUT
= 0 V
Room
1
A
Short Circuit Current
Room
700
mA
Shutdown
Shutdown Supply Current
I
CC(off)
V
SD
= 0 V
Room
0.1
1
A
High = Regulator ON (Rising)
Low = Regulator OFF (Falling)
Si91842 Only
Full
Full
Room
1.5
V
IN
0.4
SD Pin Input Voltage
V
SD
V
Auto Discharge Resistance
SD Pin Input Current
f
R_DIS
100
I
IN(SD)
V
HYST(SD)
t
ON
V
SD
= 1.5 V, V
IN
= 6 V
Room
0.7
A
SD Hysteresis
Full
150
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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