SC4520 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC4520' PDF : 12 Pages View PDF
SC4520
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. Exposure to Absolute Maximum rated conditions for extended periods of time may
affect device reliability.
Parameter
Symbol
Limits
Units
Input Supply Voltage
Boost Pin Above VSW
Boost Pin Voltage
EN Pin Voltage
FB Pin Voltage
FB Pin Current
FSET Pin Voltage
Thermal Impedance Junction to Ambient (1)
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering) 10 sec
ESD Rating (Human Body Model)
VIN
(VBST - VSW)
VBST
VEN
VFB
IFB
VFSET
θJA
TJ
TSTG
TLEAD
ESD
-0.3 to +28
16
-0.3 to +32
-0.3 to +24
-0.3 to +6
1
+3
36.5
150
-65 to +150
300
2
V
V
V
V
V
mA
V
°C/W
°C
°C
°C
kV
Note: (1) Minimum pad size.
Electrical Characteristics
Unless specified: VIN = 12V, VCOMP = 0.8V, VBST = VIN + 5V, EN = tied to VIN, SW = open.
TA = TJ = -40°C to 125°C.
Parameter
Symbol
Conditions
Operating Input Voltage
Maximum Switch Current Limit
Oscillator Frequency
Oscillator Frequency Range
Switch On Voltage Drop
VIN Undervoltage Lockout
VIN UVLO Hysteresis
VIN Supply Current
Standby Current
VIN
ISW
fOSC
fOSC
VD(SW)
VUVLO
VHYST
IQ
IQ(OFF)
ROSC = 82.5k Ω
ISW = 3A
VFB = 1V
VEN = 0V
Min Typ Max Units
24(1)
V
3.0
A
250 300 350 kHz
100
600 kHz
220
mV
3.9 4.4
V
60
mV
3
5.5
mA
250
µA
2006 Semtech Corp.
2
www.semtech.com
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