SC4503 Semtech Corporation, SC4503 Datasheet - Page 2

• Manufacturer Part Number: SC4503
• Description: 1.3MHz Step-Up Switching Regulator
• Manufacturer: Semtech Corporation

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Exceeding the specifi cations below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specifi ed in the
Electrical Characteristics section is not recommended.
*Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad as per JESD51 standards.
Unless specifi ed: V
 2007 Semtech Corp.
Absolute Maximum Ratings
POWER MANAGEMENT
Absolute Maximum Ratings
Electrical Characteristics
Parameter
Supply Voltage
SW Voltage
FB Voltages
SHDN/SS Voltage
Thermal Resistance Junction to Ambient (TSOT - 23)
Thermal Resistance Junction to Ambient (2X2 mm MLPD-W)
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering)10 sec (TSOT - 23)
Peak IR Refl ow Temperature (2X2mm MLPD-W)
ESD Rating (Human Body Model)
Parameter
Under-Voltage Lockout Threshold
Maximum Operating Voltage
Feedback Voltage
Feedback Line Voltage Regulation
FB Pin Bias Current
Switching Frequency
Minimum Duty Cycle
Maximum Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
V
V
IN
IN
Quiescent Supply Current
Supply Current in Shutdown
IN
= V
SHDN/SS
= 3V, -40°C < T
A
= T
J
< 85°C
V
SHDN/SS
= 2V, V
2.5V < V
Conditions
V
I
V
FB
SW
SHDN/SS
SW
= 1.5V (not switching)
= 1.4A
= 5V
2
IN
< 20V
= 0
Symbol
V
T
ESD
T
V
V
θ
θ
V
T
SHDN
T
LEAD
STG
SW
FB
IN
JA
JA
IR
J
1.225
1.15
Min
1.4
86
-0.3 to V
-0.3 to V
-65 to +150
Maximum
-0.3 to 20
-0.3 to 34
2000
191*
150
260
260
78*
1.250
0.02
1.30
0.01
0.01
Typ
260
2.2
-25
1.9
0.8
90
IN
IN
+0.3
+1
1.275
1.55
Max
430
-50
2.5
2.5
1.1
20
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SC4503
0
1
1
Units
°C/W
°C/W
Units
MHz
%/V
°C
mV
mA
nA
µA
µA
V
V
%
V
A