SC2453ITSTR View Datasheet(PDF) - Semtech Corporation
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Description
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SC2453ITSTR Datasheet PDF : 22 Pages
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SC2453
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified:
VCC = 5V, fs = 600KHz, SS/SHDN = 5V, SYNC = 0V,
TA
=
T
J
=
-35°C
to
105°C
Parameter
Test Conditions
Min
Typ
Max
Unit
Positive Linear Regulator
Feedback Voltage
0.475
0.5
0.525
V
Feedback Input Leakage Current
150
nA
Amplifier Transconductance
VFB4 = 0.5V, IBD4 = 0.5 to 5mA (sink)
@ 1V output
-2
-10
mV
Drive Sink Current
5
mA
Negative Linear Regulator
Feedback Voltage
-25
0
25
mV
Feedback Input Leakage Current
150
nA
Amplifier Trandconductance
VFB3 = 0V, IBD3 = 0.5 to 5mA (source)
@ -12V output
-5
-10
mV
Driver Source Current
5
mA
PWM Error Amplifier
Feedback Voltage
0.49
0.5
0.51
V
Input Bias Current
200
nA
Input Offset Voltage
3
6
mV
Open Loop Gain
90
dB
Unity Gain Bandwidth
3
MHz
Output Sink Current
2
mA
Output Source Current
2
mA
Slew Rate
1
V/µS
Oscillator
Frequency Range
100
700
KHz
Frequency
CT Peak Voltage
RT = 12.5K
540
600
3.0
660
KHz
V
CT Valley Voltage
0.1
V
SYNC Input High Pulse Width
100
nS
SYNC Rise/Fall Time
50
nS
SYNC Frequency Range
FOSC
FOSC kHz
+10%
SYNC High/Low Threshold
1.5
V
2005 Semtech Corp.
3
www.semtech.com
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