SC1531(A)
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: T
A
= 25°C, VIN = 5V, VAUX = 3.3V, I
O
= max. rated, C
O
= 4.7µF. Values in
bold
apply over full operating temperature range.
Parameter
5V D etect
(1)(2)(3)
Low Threshold Voltage
Hysteresi s
Sy mbol
Test C onditions
Min
Ty p
Max
U nits
V
TH(LO)
V
HYST
VIN Falli ng
3.90
90
80
4.05
200
4.20
V
mV
Hi gh Threshold Voltage
VO
LD O Output Voltage
V
TH(HI)
VIN Ri si ng
4.30
V
VO
I
O
= 20mA
4.3V
£
VIN
£
5.5V, 0mA
£
I
O
£
I
O(MAX)
3.9V
£
VIN
£
4.3V, VAUX = 3.3V,
0mA
£
I
O
£
I
O(MAX)(4)
3.267
3.234
3.000
3.300
3.333
3.366
V
Li ne Regulati on
REG
(LINE)
VIN = 4.3V to 5.5V
0.12
0.40
0.60
%
Load Regulati on
REG
(LOAD)
I
O
= 20mA to I
O(MAX)
0.12
0.40
0.60
%
SEN SE
SENSE Pi n Impedance
DR
D ri ve Voltage
V
DR
4.3V
£
VIN
£
5.5V, I
DR
= 200µA
3.4
3.3
VIN < V
TH(LO)
, I
DR
= -200µA
35
150
200
Peak D ri ve C urrent
I
DR(PK)
Si nki ng: VIN = 3.9V, V
DR
= 1V;
Sourci ng: VIN = 4.3V, (VIN - V
DR
) = 2V
D ri ve Hi gh D elay
(1)(5)
t
DH
C
DR
= 1.2nF, VIN rampi ng up, measured
from VIN = V
TH(HI)
to V
DR
= 2V
D ri ve Low D elay
(1)(5)
t
DL
C
DR
= 1.2nF, VIN rampi ng down, measured
from VIN = V
TH(LO)
to V
DR
= 2V
0.5
7
6
0.5
1.0
2.0
1.0
2.0
µs
µs
mA
mV
VIN - 0.8
V
R
SENSE
6.0
8.5
kW
See next page for
Notes.
ã
2000 Semtech Corp.
3
www.semtech.com
SEMTECH [ SEMTECH CORPORATION ]
