SC2446AEVB View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
SC2446AEVB Datasheet PDF : 27 Pages
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SC2446A
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: AVCC = 12V, SYNC = 0, ROSC = 51.1kΩ, -40°C < TA = TJ < 125°C
Parameter
Symbol
Conditions
PWM Outputs
Peak Source Current
Peak Sink Current
GGDDLH11,, GGDDLH22,
GGDDLH11,, GGDDLH22,
AVCC = 12V
AVCC = 12V
Output High Voltage
Source IO = 1.2mA, 0 ~ 70° C
Output Low Voltage
Sink IO = 1mA
Minimum On-Time
TA = 25°C
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
Overload Latchoff
IN1- Threshold
VSS1 = 3.8V, VIN1-Decreasing
Overload Latchoff
IN2- Threshold
VSS2 = 3.8V, VIN2-Decreasing
Soft-Start Discharge Current
Overload Latchoff Recovery
Soft-Start Voltage
PWM Output Disable SS/EN
Voltage
I I SS1(DIS), SS2(DIS) VVVSIINNS211--===00.V.55SVVSR2REE=FFIN,3,.8V
VSSRCV1,
VSSRCV2
VSS1 and VSS2 Decreasing
PWM Output Enable SS/EN
Voltage
Internal 0.5V Reference Buffer
Output Voltage
VREFOUT
IREFOUT = -1mA, 0-°C < TA = TJ < 70°C
Load Regulation
Line Regulation
0 < IREFOUT < -5mA
AVCCTH < AVCC < 15V, IREFOUT = -1mA
Notes:
(1) Guaranteed by design not tested in production.
(2) This device is ESD sensitive. Use of standard ESD handling precautions is required.
Min Typ Max Units
4
3
3.95
0
120
mA
mA
5
V
0.4
V
ns
1.8
µA
3.2
V
0.5VREF
V
0.5 X
VREFIN
V
1.2
µA
0.3
0.5
0.7
V
0.7
0.8
V
1.2
1.5
V
495
500
505 mV
0.05
%/mA
0.02% %V
2005 Semtech Corp.
4
www.semtech.com
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