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SC191AEVB Datasheet(PDF) 3 Page - Semtech Corporation

Part # SC191AEVB
Description  Low Supply Ripple Synchronous Buck Conversion Regulator
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC191AEVB Datasheet(HTML) 3 Page - Semtech Corporation

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© 2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
3
SC191
Electrical Characteristics (Cont.)
Note:
1) FELDO tested at I
BP = 110mA. Equivalent to IOUT = 330mA at VOUT= 1.2V.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
P-Channel Current Limit
I
LIM(P)
550
730
940
mA
N-Channel Current Limit
I
LIM(N)
-270
-420
-700
mA
Quiescent Current
I
Q
Switching mode, I
OUT = 100μA
2.5
mA
Shutdown Current
I
SD
EN tied to GND
0.1
1
μA
LX Leakage Current PMOS
I
LXP
V
IN = 5.5V
LX, EN tied to GND
0.1
1
μA
LX Leakage Current NMOS
I
LXN
V
IN = VLX = 5.5V
EN tied to GND
-20
0.1
μA
Oscillator Frequency
f
OSC
0.87
1.0
1.12
MHz
UVLO Threshold (Lower)
V
UVLO
2.4
2.5
2.6
V
UVLO Hysteresis
V
UVLO-HYS
50
mV
Thermal Shutdown
T
SD
145
°C
Thermal Shutdown
Hysteresis
T
SD-HYS
10
°C
Logic Input High
V
IH
EN pin
1.6
V
Logic Input Low
V
IL
EN pin
0.6
V
Logic Input Current High
I
IH
EN pin
-2
0.1
2
μA
Logic Input Current Low
I
IL
EN pin
-2
0.1
2
μA


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