SI91821 Vishay Siliconix, SI91821 Datasheet - Page 3

• Manufacturer Part Number: SI91821
• Description: Micropower 300-mA CMOS LDO Regulator With Error Flag
• Manufacturer: Vishay Siliconix

Notes
a.
b.
c.
d.
e.
f.
g.
Document Number: 71614
S-51147–Rev. E, 20-Jun-05
SPECIFICATIONS
Dynamic Line Regulation
Dynamic Load Regulation
Turn-on Overshoot
V
Thermal Shutdown
Thermal Shutdown Junction Temp
Thermal Hysteresis
Short Circuit Current
Shutdown Input
SD Input Voltage
SD Input Voltage
SD Input Current
SD Input Current
Shutdown Hysteresis
Error Output
Output High Leakage
Output Low Voltage
Power_Good Trip Threshold
(Rising)
Hysteresis
Error Delay
OUT
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 and are measured at T
The dropout voltage is defined as V
higher.
The device’s shutdown pin includes a typical 6-MW internal pull-down resistor connected to ground.
V
Typical only, from V
OUT
Turn-On-Time
is defined as the output voltage of the DUT at 1 mA.
Parameter
f
e
e
OUT
= 2.0 V to V
f, g
IN
Symbol
OUT
DV
DV
− V
DV
t
T
T
V
V
DELAY
I
V
V
t
HYST
HYST
HYST
O(load)
J(s/d)
I
V
OFF
V
O(line)
I
ON
SC
I
OOS
IH
OUT
= 1.5 V.
IL
OL
TH
IH
IL
when V
OUT
C
C
C
V
OUT
Unless Otherwise Specified
Unless Otherwise Specified
IN
IN
IN
V
V
is 100 mV below the value of V
I
: V
IN
IN
= 2.2 mF, C
= 2.2 mF, C
OUT
V
Low = Regulator OFF (Falling)
IN
= 10 mF, V
High = Regulator ON (Rising)
= V
= V
OUT(nom)
t
V
r
V
followed by SD = High Event
/t
: 1 mA to 150 mA, t
SD
Test Conditions
Test Conditions
f
SD
ERROR = V
OUT(nom)
OUT(nom)
= 5 ms, I
C
C
= 0 V, Regulator OFF
= 6 V, Regulator ON
NOISE
NOISE
I
SINK
V
V
OUT
OUT
OUT
+ 1 V to V
IN
OUT
OUT
= 3.6 V
+ 1 V, I
+ 1 V, I
v 100 nF
= 2 mA
v 100 nF
= 2.2 mF, V
= 2.2 mF, V
to 90% of final value,
= 0 V
OUT(nom)
= 250 mA
OUT(nom)
OUT
OUT
r
/t
f
SD
SD
= 1 mA
= 1 mA
= 2 ms
= 1.5 V
= 1.5 V
OUT
+ 2 V
for V
IN
= V
Temp
Room
Room
Room
Room
Room
Room
Room
Room
Room
Room
OUT
Full
Full
Full
Full
Full
Full
Full
+ 2 V. This is applicable for voltages of 2.5 V or
a
A
Min
0.93 x
V
= 25_C.
1.5
OUT
b
Vishay Siliconix
−40 to 85_C
Limits
Typ
0.95 x
V
V
2% x
0.01
0.01
350
165
800
100
1.0
10
30
20
OUT
OUT
c
Max
0.97 x
V
Si91821
2.5
V
0.4
0.4
OUT
10
2
IN
b
www.vishay.com
Unit
mV
mV
mA
mV
mS
_C
_C
mA
mA
mA
mS
%
V
V
V
3