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SC4524AEVB Datasheet(PDF) 3 Page - Semtech Corporation

Part # SC4524AEVB
Description  28V 2A Step-Down Switching Regulator
Download  18 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4524AEVB Datasheet(HTML) 3 Page - Semtech Corporation

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SC4524A
3
Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified in the
Electrical Characteristics section is not recommended.
NOTES-
() Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD5 standards.
(2) Tested according to JEDEC standard JESD22-A4-B.
Electrical Characteristics
Unless otherwise noted, V
IN = 2V, VBST = 5V, VSS = 2.2V, -40°C < TA = TJ < 25°C, ROSC = 2.kΩ.
Absolute Maximum Ratings
V
IN Supply Voltage ……………………………… -0.3 to 32V
BST Voltage ……………………………………………… 42V
BST Voltage above SW …………………………………… 36V
SS Voltage ……………………………………………-0.3 to 3V
FB Voltage …………………………………………… -0.3 to V
IN
SW Voltage ………………………………………… -0.6 to V
IN
SW Transient Spikes (0ns Duration)……… -2.5V to V
IN +.5V
Peak IR Reflow Temperature ………………………….
260°C
ESD Protection Level(2) ………………………………… 2000V
Thermal Information
Junction to Ambient () ……………………………… 36°C/W
Junction to Case () ………………………………… 5.5°C/W
Maximum Junction Temperature……………………… 50°C
Storage Temperature ………………………… -65 to +50°C
Lead Temperature (Soldering) 0 sec ………………… 300°C
Parameter
Conditions
Min
Typ
Max
Units
Input Supply
Input Voltage Range
3
28
V
V
IN Start Voltage
V
IN Rising
2.70
2.82
2.95
V
V
IN Start Hysteresis
225
mV
V
IN Quiescent Current
V
COMP = 0 (Not Switching)
2
2.6
mA
V
IN Quiescent Current in Shutdown
V
SS/EN = 0, VIN = 2V
40
50
µA
Error Amplifier
Feedback Voltage
0.980
.000
.020
V
Feedback Voltage Line Regulation
V
IN = 3V to 28V
0.005
%/V
FB Pin Input Bias Current
V
FB = V, VCOMP = 0.8V
-70
-340
nA
Error Amplifier Transconductance
280
µΩ-
Error Amplifier Open-loop Gain
60
dB
COMP Pin to Switch Current Gain
8
A/V
COMP Maximum Voltage
V
FB = 0.9V
2.4
V
COMP Source Current
V
FB = 0.8V, VCOMP = 0.8V
7
µA
COMP Sink Current
V
FB = .2V, VCOMP = 0.8V
25
Internal Power Switch
Switch Current Limit
(Note )
2.6
3.3
4.3
A
Switch Saturation Voltage
I
SW = -2.6A
250
400
mV
Recommended Operating Conditions
Input Voltage Range ……………………………… 3V to 28V
Maximum Output Current ……………………………… 2A


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