SC4607 Ver la hoja de datos (PDF) - Semtech Corporation
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SC4607 Datasheet PDF : 17 Pages
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SC4607
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless otherwise specified, VCC = 3.3V, CT = 270pF, TA = -40°C to 85°C, TA=TJ
Parameter
Test Conditions
Min
Typ
Error Amplifier (Cont.)
VOUT High
VOUT Low
Oscillator
ICOMP = -5.5mA
ICOMP = 5.5mA
VCC - 0.5
VCC - 0.3
0.3
Initial Accuracy
Voltage Stability
Temperature Coefficient
Minimum Operation Frequency (1)
TA = 25°C
TA = 25°C, VCC = 2.25V to 5.5V
TA = -40°C to 85°C
525
575
0.5
0.02
50
Maximum Operation Frequency (1)
Ramp Peak to Valley
1
Ramp Peak Voltage
1.3
Ramp Valley Voltage
0.3
Sleep, Soft Start, Current Limit
Sleep Threshold
Measured at FS
Sleep Input Bias Current
Soft Start Time (1)
ISET Bias Current
Temperature Coefficient of ISET
VSYNC = 0V
FSW = 575 KHz
TJ = 25°C
-1
1.2
-45
-50
0.28
Current Limit Blank Time (1)
130
Gate Drive
Duty Cycle
Pull-Up Resistance (DRVH) (2)
VBST - VPHASE = 3.3V, ISOURCE = -100mA
2.7
Pull-Down Resistance (DRVH) (2)
VBST - VPHASE = 3.3V, ISINK = 100mA
2.4
Pull-Up Resistance (DRVL) (1)
VCC = 3.3V, ISOURCE = -100mA
2.2
Pull-Down Resistance (DRVL) (2)
VCC = 3.3V, ISINK = 100mA
1.5
Output Rise Time
VCC = 3.3V, COUT = 4.7nF
35
Output Fall Time
VCC = 3.3V, COUT = 4.7nF
27
Minimum Non-Overlap (1)
40
Notes:
(1). Guaranteed by design.
(2). Guaranteed by characterization.
2005 Semtech Corp.
3
Max
Unit
V
0.45
625
kHz
%/V
%/°C
kHz
1M
Hz
V
V
V
75
mV
µA
ms
-55
µA
%/°C
ns
97
%
Ω
Ω
Ω
Ω
ns
ns
ns
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