SC185 Datasheet, PDF (4/18 Pages) Semtech Corporation – 4A Synchronous Step-Down Regulator

SC185
Electrical Characteristics (continued)
Parameter
Symbol
Conditions
Min Typ Max Units
Impedence of PGOOD Low
PGOOD Threshold
PGOOD Delay
R_{PGOOD_LO}
V_{PG_TH}
V_{PG_DLY}
VOUT rising
Asserted
PGOOD= Low
10
Ω
90
%
2
ms
20
µs
EN Delay
t_{EN_DLY}
From EN Input High to SS starts rising
50
µs
EN Input Current⁽¹¹⁾
I_{EN_}
EN =AVIN or AGND
-2.0
2.0
µA
EN Input High Threshold
V_{EN_HI}
1.2
V
EN Input Low Threshold
V_{EN_LO}
0.4
V
MODE Input Current⁽¹¹⁾
I_{MODE_}
MODE= AVIN or AGND
-2.0
2.0
µA
MODE Input High Threshold
V_{MODE_HI}
1.2
V
MODE Input Low Threshold
V_{MODE_LO}
0.4
V
V_OUT Over Voltage Protection
V_OVP
110 115 120
%
Thermal Shutdown Temperature
T_SD
160
°C
Thermal Shutdown Hysteresis
T_{SD_HYS}
10
°C
Notes:
(10) The “Output Voltage Tolerance” includes output voltage accuracy, voltage drift over temperature and the line regulation.
(11) A negative current means the current flows into the pin and a positive current means the current flows out from the pin.
© 2010 Semtech Corp.

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