SC2440 Просмотр технического описания (PDF) - Semtech Corporation
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SC2440 Datasheet PDF : 26 Pages
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SC2440
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied.
Parameter
Symbol
Max
Units
Input Voltage
Boost Pin
Boost Pin Above SW
PGOOD Pin Voltage
SS Pins
FB Pins
SYNC Pin Current
SW Voltage
SW Transient Spikes (<10ns Duration)
VIN
VBST
VBST-VSW
VPGOOD
VSS
VFB
ISYNC
VSW
VSW
-0.3 to 20
V
40
V
20
V
VIN
V
3
V
-0.3 to VIN
V
5
mA
-0.6 to VIN
V
VIN +1.5
V
-2.5
Operating Ambient Temperature Range
TA
Thermal Resistance Junction to Ambient
θJA
Maximum Junction Temperature
TJ
Storage Temperature Range
TSTG
Lead Temperature (Soldering)10 sec
TLEAD
Electrical Characteristics
Unless specified: -40°C < TA < 85°C, -40°C < TJ< 105°C, ROSC = 12.1KΩ, VSYNC = 0, VIN = 5V, VBOOST = 8V
Parameter
Conditions
-40 to 85
45
150
-65 to +150
300
Min
Typ
°C
°C/W
°C
°C
°C
Max Units
VIN Start Voltage
VIN Start Hysteresis
Quiescent Current
Shutdown Current
Feedback Voltage
Feedback Voltage Line
Regulation
FB Pin Input Bias Current
Error Amplifier Transconductance
Error Amplifier Open-loop Gain
COMP Source Current
COMP Sink Current
COMP Pin to Switch Current Gain
© 2005 Semtech Corp.
Not switching, PGOOD Open
VSS1 = VSS2 = 0V, PGOOD Open
VIN = 3V to 20V
V = 1V, V = 1.5V
FB
COMP
VFB = 0.8V, VCOMP = 1.5V
VFB = 1.2V, VCOMP = 1.5V
2
2.45 2.62 2.78
V
75
mV
3.3
4.3
mA
38
60
µA
0.980 1.000 1.020
V
0.005
%/V
-15
-30
nA
280
µΩ-1
53
dB
20
µA
20
µA
5.7
A/V
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