sc4525c Semtech Corporation, sc4525c Datasheet - Page 3

• Manufacturer Part Number: sc4525c
• Description: 28v 3a Step-down Switching Regulator
• Manufacturer: Semtech Corporation

Absolute Maximum Ratings
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-
(1)
(2)
Electrical Characteristics
Unless otherwise noted, V
V
BST Voltage ……………………………………………… 42V
BST Voltage above SW …………………………………… 34V
SS Voltage ……………………………………………-0.3 to 3V
FB Voltage …………………………………………… -0.3 to V
SW Voltage ………………………………………… -0.6 to V
SW Transient Spikes (10ns Duration)……… -2.5V to V
Peak IR Reflow Temperature ………………………….
ESD Protection Level
Parameter
Input Supply
Input Voltage Range
V
V
V
V
Error Amplifier
Feedback Voltage
Feedback Voltage Line Regulation
FB Pin Input Bias Current
Error Amplifier Transconductance
Error Amplifier Open-loop Gain
COMP Pin to Switch Current Gain
COMP Maximum Voltage
COMP Source Current
COMP Sink Current
Internal Power Switch
Switch Current Limit
Switch Saturation Voltage
IN
IN
IN
IN
IN
Start Voltage
Start Hysteresis
Quiescent Current
Quiescent Current in Shutdown
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.
Tested according to JEDEC standard JESD22-A114-B.
Supply Voltage ……………………………… -0.3 to 32V
(2)
IN
………………………………… 2000V
= 12V, V
BST
= 15V, V
SS
= 2.2V, -40°C < T
IN
V
V
V
+1.5V
COMP
260°C
FB
FB
V
A
V
FB
= T
= 0.8V, V
= 1.2V, V
SS/EN
V
= 0 (Not Switching)
= 1V, V
Conditions
IN
J
IN
IN
V
I
V
< 125°C, R
SW
= 8V to 28V
(Note 1)
= 0, V
FB
IN
= -3.9A
= 0.9V
Rising
COMP
Thermal Information
Recommended Operating Conditions
COMP
COMP
IN
Junction to Ambient
Junction to Case
Maximum Junction Temperature……………………… 150°C
Storage Temperature ………………………… -65 to +150°C
Lead Temperature (Soldering) 10 sec ………………… 300°C
Input Voltage Range ……………………………… 3V to 28V
Maximum Output Current ……………………………… 3A
Operating Ambient Temperature …………… -40 to +105°C
Operating Junction Temperature …………… -40 to +125°C
= 12V
= 0.8V
OSC
= 0.8V
= 0.8V
= 12.1kΩ.
(1)
…………………………………
(1)
0.980
……………………………… 36°C/W
Min
2.70
3.9
3
1.000
0.005
-170
Typ
2.82
15.2
2.35
225
300
380
5.1
40
60
17
25
2
1.020
Max
-340
2.95
2.6
6.6
600
SC4525C
28
52
5.5°C/W
Units
%/V
µ
A/V
mA
mV
mV
µA
nA
dB
µA
V
V
V
Ω
V
A
-1
3