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SC2443 датащи(PDF) 4 Page - Semtech Corporation

номер детали SC2443
подробное описание детали  Dual-Phase Single or Two Output Synchronous Step-Down Controller
PDF  22 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC2443 датащи(HTML) 4 Page - Semtech Corporation

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SC2443
4
Electrical Characteristics (continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Channel 2 Error Amplifier
Input Common-mode Range()
0
3
V
Inverting Input Voltage Range()
0
AVCC
V
Input Offset Voltage
.5
mV
Non-inverting Input Bias Current
I
IN2+
-50
-380
nA
Inverting Input Bias Current
I
IN2-
-00
-250
nA
Inverting Input Voltage for 2 phases
Single Output Operation
2.5
V
Amplifier Transconductance
G
M2
260
µW-1
Amplifier Open Loop Gain
A
OL2
65
dB
Amplifier Unity Gain Bandwidth
5
MHz
COMP2 Switching Threshold
V
CS2+=VCS2- = 0, VSS2 Rising
2.2
V
Amplifier Output Sink Current
V
COMP2 = 2.5V
6
µA
Amplifier Output Source Current
V
COMP2 = 2.5V
2
µA
Oscillator
Channel Frequency
f
CH, fCH2
450
500
550
kHz
Synchronizing Frequency()
2.f
CH
kHz
SYNC Input High Voltage
.5
V
SYNC Input Low Voltage
0.5
V
Channel Maximum Duty Cycle
D
MAX, DMAX2
88
%
Channel Minimum Duty Cycle
D
MIN, DMIN2
0
%
Current Limit Comparator
Input Common Mode Range
0
AVCC-
V
Cycle by cycle Peak Currentr Limit
V
ILIM+ , VILIM2+
V
CS- = VCS2- = 0.5V, Sourcing
60
75
90
mV
Valley Current Overload Shutdown
Threshold
V
ILIM- , VILIM2-
V
CS- = VCS2- = 0.5V, Sinking
-85
-0
-30
mV
Positive Current sense
Input Bias Current
I
CS+ , ICS2+
V
CS+ = VCS- = 0
V
CS2+ = VCS2- = 0
-0.7
-2
µA
Negative Current sense
Input Bias Current
I
CS- , ICS2-
V
CS+ = VCS- = 0
V
CS2+ = VCS2- = 0
-0.7
-2
µA



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