SC4612H Datasheet, PDF (2/21 Pages) Semtech Corporation – 40V Synchronous Buck Controller

SC4612H
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
Maximum
Units
Bias Supply Voltage to GND
VDD
-0.3 to 45
V
PHASE to GND
VIN
-2 to +55
V
DRV, ILIM, DL to GND, BST, DH to PHASE
-0.3 to 10
V
EAO, SS/EN, FB, OSC to GND
-0.3 to +5
V
DRV Source Current (peak)
100
mA
Thermal Resistance Junction to Ambient (MLPD) ⁽¹⁾
θ_JA
45.3
°C/W
Thermal Resistance Junction to Case (MLPD)
θ_JC
11
°C/W
Thermal Resistance Junction to Ambient (SOIC) ⁽¹⁾
θ_JA
115
°C/W
Thermal Resistance Junction to Case (SOIC)
θ_JC
45
°C/W
Storage Temperature Range
T_STG
-65 to +150
°C
Peak IR Reflow Temperature (10-40s)
T_{IR Reflow}
260
°C
Lead Temperature (10s), (SOIC-14)
T_LEAD
300
°C
All voltages with respect to GND. Positive currents are into, and negative currents are out of the specified terminal. Pulsed
is defined as a less than 10% duty cycle with a maximum duration of 500ns. Consult Packaging Section of Data sheet for
thermal limitations and considerations of packages.
Note:
(1). ThetaJA is calculated from a package in still air, mounted to a 3” x 4.5”, 4 layer FR4PCB with thermal vias (if applicable)
per JESD51 standards.
Recommended Operating Conditions
Performance is not guaranteed if the conditions below are exceeded.
Parameter
Symbol
Supply Voltage Range
VDD
Ambient Temperature Range
T_A
Junction Temperature Range
T_J
Conditions
Min Typ Max Units
5
40
V
-40
105
o_C
-40
125
o_C
© 2008 Semtech Corp.
2
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