SC172 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
SC172
Semtech Corporation
'SC172' PDF : 27 Pages View PDF
SC172
Electrical Characteristics (continued)
Unless specified: VIN =5V, TA=+25°C for Typ, -40°C to +85°C for Min and Max, TJ < 125°C
Parameter
Symbol
Conditions
Min
Typ
Max Units
Timing
On-Time
Minimum On-Time(1)
Continuous Mode
VIN=5V, VOUT=3V, RTON=66.7kΩ
0.9
1
1.1
μs
80
ns
Minimum Off-Time(1)
250
ns
Soft start
Soft start Time(1)
Ultrasonic Power Save
Delay from PWM Switching to Output
850
μs
Regulation
Zero-Crossing Detector Threshold
LX - PGND
0
mV
Ultrasonic Power Save Frequency
25
kHz
Power Good
Power Good Threshold
Power Good Signal Threshold High
116
120
124
%VOUT
Power Good Signal Threshold Low
86
90
93
PGOOD Delay Time(1)
Noise Immunity Delay Time
Leakage
Power Good On-Resistance
Fault Protection
Output Under-Voltage Fault
VDD=3V
VDD=5V
FB with Respect to REF,
8 Consecutive Clocks
1
ms
2
5
µs
1
µA
10
20
Ω
-30
-25
-20
%
Output Over-Voltage Fault
FB with Respect to REF
+16
+20
+24
%
Smart PowerSave
Protection Threshold
OV, UV Fault Noise Immunity Delay
Over-Temperature Shutdown
FB with Respect to REF
OT Latched
+7
+10
+13
%
5
μs
150
°C
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