SC488ML View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
SC488ML Datasheet PDF : 24 Pages
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SC488
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Conditions
25°C
-40°C to 85°C
Units
Min
Typ
Max
Min
Max
VDDQ Controller
FB Error Comparator
Threshold(1)
VDDQS Regulation Threshold
On-Time
Minimum Off-Time
VDDQS Input Resistance
VDDQS Shutdown
Discharge Resistance
FB Leakage Current
VDDQ Smart
Psave Threshold
VTT Controller
REF Source Current
REF Sink Resistance
REF Output Accuracy
Shutdown Discharge
Resistance (EN/PSV = GND)
With Adjustable Resistor Divider
FB = AGND
FB = VCCA
RTON = 1MΩ, VDDQ = 1.8V
RTON = 500kΩ, VDDQ = 1.8V
FB < 0.3V
FB > 0.3V
EN/PSV = GND
IREF = 0 to 10mA
VTT
REF
1.500
2.5
1.8
460
265
400
80
91
16
8
50
900
0.32
8
1.4775 1.5225 V
2.4625 2.5375 V
1.773 1.827
V
368
552
ns
212
318
550
ns
kΩ
Ω
-1.0
1.0
μA
%
10
mA
kΩ
882
918
mV
Ω
VTT Output Accuracy
(with respect to REF)
-2A < IVTT < 2A(9)
0
-40
+40
mV
VTTS Leakage Current
Current Sensing
ILIM Current
Current Comparator Offset
Zero-Crossing Threshold
VDDQ Fault Protection
Current Limit (Positive)(2)
Current Limit (Negative)
Output Under-Voltage Fault
DL High
PGND1 - ILIM
PGND1 - LX, EN/PSV = 5V
PGND1 - LX, RLIM = 5kΩ
PGND1 - LX, RLIM = 10kΩ
PGND1 - LX, RLIM = 20kΩ
PGND1 - LX
With Respect to FB Regulation Point
10
5
50
100
200
-125
-30
-1.0
1.0
μA
9
11
μA
-10
10
mV
mV
35
65
80
120
mV
170
230
-160
-90
mV
-35
-25
%
© 2006 Semtech Corp.
3
www.semtech.com
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