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SC415 Datasheet(PDF) 5 Page - Semtech Corporation

Part No. SC415
Description  Dual Synchronous Buck Controller
Download  30 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC415 Datasheet(HTML) 5 Page - Semtech Corporation

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SC415
5
Parameter
Conditions
25°C
-40° to 85°C
Units
Min
Typ
Max
Min
Max
Regulation (Continued)
VOUT2 On-Time Threshold
FB1 = 5V; 0 to 85°C
FB1 = 5V; -40 to 85°C
1.25
1.25
1.2343
1.2281
1.2656
1.2718
V
FB1 = RTN; 0 to 85°C
FB1 = RTN; -40 to 85°C
1.05
1.05
1.0368
1.0316
1.0631
1.0684
V
VOUTx Line Regulation Error
0.04
%/V
VOUTx Load Regulation Error
0.3
%
Timing
VOUTx On-Time(1)
VOUTx Set to 1.5V
VOUT1; RTON = 1Meg
VOUT2; RTON = 1Meg
VOUT1; RTON = 499K
VOUT2; RTON = 499K
400
330
200
167
320
260
480
400
nsec
Minimum On-Time
DH1, DH2
50
nsec
Minimum Off-Time
DL1, DL2
330
nsec
Soft-Start/Shutdown
Soft-Start SSx Current Source
5
3.5
6.5
μA
Soft-Start Ramp Time
CSSx = 4.7nF
1500
μsec
SSx Shutdown
Discharge Resistance
ENx = RTN,
VOUTx < 300mV
16
Ω
VOUTx Shutdown
Discharge Resistance
ENx = RTN,
VOUTx < 300mV
16
Ω
Analog Inputs/Outputs
VOUT1 Input Resistance
EN1 = VDD1
120
kΩ
VOUT2 Input Resistance
EN2 = VDD2
90
kΩ
FBx Input Bias Current
-1
+1
μA
Current Sense
ILIMx Source Current
10
9
11
μA
ILIMx Comparator Offset
ILIMx - GND
-10
+10
mV
Current Limit (Negative)
LXx - GND
80
60
100
mV
Zero Crossing Detector Threshold
LXx - GND
0
-7
+7
mV
Power Good
PGDx Threshold
1% Hysteresis Typical,
with Respect to
Regulation Point
-12%
-9%
-15%
PGDx Threshold Delay Time (2)
5
μsec
Electrical Characteristics (continued)


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