SC4509 Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Fabricante
SC4509
Semtech Corporation
SC4509 Datasheet PDF : 15 Pages
| |||
SC4509
POWER MANAGEMENT
PRELIMINARY
Absolute Maximum Rating
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
Maximum
Input Supply Voltage
SW Voltage
Maximum Output Voltage
Feedback Voltage
EN/SS Voltage
Maximum Junction Temperature
Storage Temperature Range
Thermal Impedance
Junction to Ambient(1)
MLPD-W8
SOT23-6
VIN
VSW
VOUT
VFB
VEN/SS
TJ
TSTG
θJA
-0.3 to 20
-0.3 to 30
30
-0.3 to 20
-0.3 to VIN + 0.3
125
-65 to +150
78
165
Lead Temperature (Soldering), 10s (SOT23-6 package only)
TLEAD
300
Peak IR Flow Temperature, (10-40sec)
TPKG
260
ESD Rating (Human Body Model)(2)
VESD
2
Note:
1) Calculated from package in still air, mounted to 3”x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
2) Tested in accordance to JEDEC standard JESD22-A114B.
Units
V
V
V
V
V
°C
°C
C/W
°C
°C
kV
Electrical Characteristics
Unless specified: VIN = VEN/SS = 3.6V; CIN = 1μF; COUT = 0.22μF; L = 22μH; unless otherwise noted, TA = +25°C for Typ, -40ºC to 85°C for Min and Max.
Parameter
Symbol
Conditions
Min Typ Max
Units
Input Voltage
Quiescent Current
Feedback Voltage
Feedback Pin Bias Current
Switching Frequency
Maximum Output Voltage
Switch Saturation Voltage
Maximum Duty Cycle
Switch Current Limit
Switch Leakage Current
Shutdown Current
PWM Dimming Frequency(1)
EN/SS Threshold Low
EN/SS Threshold High
VIN
IQ
VFB
IQFB
fOSC
VOUT
VCESAT
DMAX
Icl
ILKG
No switching
TA=25 °C
ISW = 85mA; TA=25 °C
VFB = GND
ILOAD = 0; TA=25 °C
VSW = 5V; VOUT = Open
2.7
10
2.6
3.3
182 199
216
35
100
1.0
1.2
1.4
20
160
300
90
300 500
700
0.01
5.0
ISHD
VEN/SS = GND; VIN = 3V; VOUT = Open
3
5
fDIM
1
10
VIL
50
VIH
1.8
V
mA
mV
nA
MHz
V
mV
%
mA
μA
μA
kHz
mV
V
© 2007 Semtech Corp.
2
www.semtech.com
Share Link: