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SC4620 Datasheet(Fiches technique) 3 Page - Semtech Corporation

Numéro de pièce SC4620
Description  Low Input Voltage, High Efficiency, 2.5A Integrated FET Synchronous Step down DC/DC Regulator
Télécharger  19 Pages
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Fabricant  SEMTECH [Semtech Corporation]
Site Internet  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4620 Datasheet(HTML) 3 Page - Semtech Corporation

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 2007 Semtech Corp.
www.semtech.com
SC4620
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.
Electrical Characteristics
Absolute Maximum Ratings
Unless otherwise specified, V
IN= VCC=SYNC/EN=3.3V, ROSC=51.1KΩ, RISET=27.4KΩ, TA = -40°C to 85°C
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Power Supply
Start Threshold Voltage, UVLO
V
IUV
V
IN Rising
2
2.25
V
Hysteresis Voltage, UVLO
V
IUVHY
120
mV
Supply Current, Shutdown
I
SD
V
SYNC = 0V
0.2
1
µA
Supply Current, Operating
I
Qswitching
FB = COMP, No Load
7
10
mA
I
QL
FB = 0.6V, No Load
3.5
7
mA
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Power Supply
Input Voltage Operating Range
V
IN
2.3
5.5
V
Ambient Temperature Range
T
A
-40
85
°C
Junction Temperature
T
J
-40
125
°C
Max. Output Current
I
OUTMAX
0
2.5
A
Recommended Operating Conditions
The Performance is not guarantied if exceeding the specifications below.
Parameter
Symbol
Maximum
Units
Supply Voltage
PV
IN, VCC
-0.3 to 6
V
PVIN to VCC
+/- 0.3
V
FB, COMP, ISET, SYNC/EN, FS, SS, PGOOD to AGND
-0.3 to VCC+ 0.3
V
PGND to AGND
+/- 0.3
V
PHASE Voltage to PGND
V
PHASE
-0.3 to PVIN+ 0.3
V
PHASE Pulse Voltage to PGND Tpulse < 50ns
V
PHASE
-3 to PVIN+ 2
V
Storage Temperature Range
T
STG
-40 to 150
°C
Junction Temperature
T
J
150
°C
IR Reflow Temperature
T
P
260
°C


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