SC2446ITETRT View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC2446ITETRT' PDF : 38 Pages View PDF
SC2446
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: AVCC = PVCC = VIN2 =12V, VBST1 = VBST2 = 12V, SYNC= 0, ROSC = 51.1kΩ, -40°C < TA = TJ < 85°C
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Low-side Gate Drive Peak Source
Current
AVCC = PVCC =12V
1.5
A
Low-side Gate Drive Peak Sink Current
AVCC = PVCC =12V
1
A
Gate Drive Rise Time
Gate Drive Fall Time
Low-side Gate Drive to High-side Gate
Drive Non-overlapping Delay
High-side Gate Drive to Low-side Gate
Drive Non-overlapping Delay
Minimum On-Time
CL = 2200pF
CL = 2200pF
CL = 0
CL = 0
TA = 25°C
20
ns
20
ns
90
ns
90
ns
150
ns
Soft-Start, Overload Latchoff and Enable
Soft-Start Charging Current
Overload Latchoff Enabling Soft-Start
Voltage
ISS1, ISS2
VSS1 = VSS2 = 1.5V
VSS1 and VSS2 Increasing
2
µA
3.2
V
Overload Latchoff IN1- Threshold
VSS1 = 3.8V, VIN1-Decreasing
0.75VREF
V
Overload Latchoff IN2- Threshold
VSS2 = 3.8V, VIN2-Decreasing
0.72 X
VREFIN
V
Soft-Start Discharge Current
ISS1(DIS),
ISS2(DIS)
VVVIISNNS121--===00V..55SVSV2RRE=EFFIN,3,.8V
1.4
µA
Overload Latchoff Recovery Soft-Start
Voltage
VSSRCV1,
VSSRCV2
VSS1 and VSS2 Decreasing
0.3
0.5
0.7
V
Gate Drive Disable SS/EN Voltage
0.7
0.9
V
Gate Drive Enable SS/EN Voltage
1.2
1.5
V
Channel 1 Virtual Phase Node Voltage
Output High Voltage
VVPN1H
IVPN1= -100µA, VBST1= 24V
VPVCC-0.05
Output Low Voltage
VVPN1L
IVPN1= 100µA, VBST1= 24V
Output Sourcing Current
Output Sinking Current
VVBVSPNT11==
24V,
VPVCC
-
0.2V
7
VBST1= 24V, VVPN1= 0.2V
7
Channel 2 Virtual Phase Node Voltage
V
20
mV
mA
mA
Output High Voltage
Output Low Voltage
Output Sourcing Current
Output Sinking Current
External Reference Buffer
VVPN2H
IVPN2= -100µA, VBST2= 24V
VIN2 - 0.05
VVPN2L
IVPN2= 100µA, VBST2= 24V
VVBVSPNT22==
24V,
VIN2 -
0.2V
7
VBST2= 24V, VVPN2= 0.2V
7
V
20
mV
mA
mA
External Reference Input Voltage Range
Buffered Output Voltage
2004 Semtech Corp.
VREFIN
VREFOUT
VREFIN=1.25V, IREFOUT= -1mA
4
0
VREFIN -0.01
VREFIN
4
V
VREFIN +0.01
V
www.semtech.com
Share Link: 
