SC4519H Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
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Fabricante
SC4519H Datasheet PDF : 14 Pages
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SC4519H
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
SYNC Pin Current
Thermal Impedance Junction to Ambient
VIN
(VBST - VSW)
VBST
VEN
VFB
IFB
ISYNC
θJA
-0.3 to +28 (1)
16
-0.3 to +32
-0.3 to +24
-0.3 to +6
1
1
36.5(2)
V
V
V
V
V
mA
mA
°C/W
Operating Ambient Temperature Range
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering) 10 sec
ESD Rating (Human Body Model)
TA
-40 to +85
°C
TJ
+150
°C
TSTG
-65 to +150
°C
TLEAD
300
°C
ESD
2
kV
Notes:
(1) For proper operation of device, VIN should be within maximum Operating Input Voltage as defined in Electrical
Characteristics.
(2) ThetaJA is calculated from a package in still air, mounted to 3" x 4.5", 4 layer FR4 PCB with thermal vias under exposed
pad per JESD51 standards.
Electrical Characteristics
Unless specified: VIN = 12V, VCOMP = 0.8V, VBST = VIN + 5V, EN = tied to VIN, SYNC = 0, SW = open.
TA = TJ = -40°C to 125°C.
Parameter
Symbol
Conditions
Operating Input Voltage
Maximum Switch Current Limit
Oscillator Frequency
Switch On Voltage Drop
VIN Undervoltage Lockout
VIN UVLO Hysteresis
VIN Supply Current
Standby Current
VIN
ISW
fOSC
VD(SW)
VUVLO
IQ
IQ(OFF)
TA = 25°C, D = 50%
ISW = 3A
VFB = 1V
VEN = 0V
Min Typ Max Units
24(1)
V
3.5
5.5
A
500 600 700 kHz
220
mV
3.9 4.4
V
60
mV
3
5
mA
100 150 µA
2007 Semtech Corp.
2
www.semtech.com
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