SC420
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: T
A
= 25°C; V
IN
= 5V; 0V < V
DRN
< 25V
Parameter
Under Voltage Lockout
Start Threshold (ramping up)
Hysteresis
Under-Voltage Lockout
Time Delay
VIN ramping up
(1)
VIN ramping down
EN
High Level Input Voltage
Low Level Input Voltage
CO
High Level Input Voltage
Low Level Input Voltage
Tri-state Level
Thermal Shutdown
Over Temperature Trip Point
(1)
(1)
Symbol
Conditions
Min
Typ
Max
Units
VIN
Vhys
4.1
100
4.3
200
4.55
350
V
mV
tpdh
UVLO
tpd
LUVLO
2
2
µs
µs
V
IH
V
IL
2.0
0.8
V
V
2.0
0.8
CO floating
1.0
1.9
V
V
V
T
OTP
T
HYST
165
10
o
C
C
Hysteresis
(1)
High Side Driver (TG)
Peak Output Current
Output Resistance
(1)
o
I
PKH
R
SRC_TG
R
SINK_TG
I=
100mA
V
BST
-V
DRN
= 5V
V
BST
-V
DRN
= 5V
CL = 3nF,V
BST
- V
DRN
= 5V
1.3
3.4
A
Ω
1.1
15
15
24
24
ns
ns
Rise Time
(1)
Fall Time
(1)
tr
TG
tf
TG
(1) Guaranteed by design
©
2003 Semtech Corp.
3
United States Patent No. 6,441,597
www.semtech.com
SEMTECH [ SEMTECH CORPORATION ]
