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MB3800 Datasheet(PDF) 3 Page - First Components International

Part # MB3800
Description  Wide supply voltage operating range: 1.8 to 15 V
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Manufacturer  FCI [First Components International]
Direct Link  http://www.cotra.com.tw/
Logo FCI - First Components International

MB3800 Datasheet(HTML) 3 Page - First Components International

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TL431 Programmable Precision Reference
MB3800 Switching Regulator Controller
Preliminary
ELECTRICAL CHARACTERISTICS
Value
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Reset Voltage
VR
-
-
0.9
Circuit to prevent
malfunction at low
input voltage
(U.V.L.O.)
Threshold
Voltage
VTH
-
1.1
1.3
1.5
V
Charging Current
ICS
VSCP=0V
-1.5
-1.0
-0.7
μA
Soft start
Voltage at soft
start completion
VtS
-
0.7
0.8
0.9
V
Charging current
ICPC
VSCP=0V
-1.5
-1.0
-0.7
μA
Short circuit
detection (S.C.R)
Threshold
Voltage
VtPC
-
0.7
0.8
0.9
V
Oscillation
frequency
fOSC
RT=3.0KΩCT=270pF
400
500
600
KHz
Frequency input
Stability
fdV
VCC=2V to 15V
-
2
10
%
Sawtooth wave
oscillator (OSC)
Frequency
variation with
temperature
fdT
Ta=-30℃~+85℃
-
5
-
%
Input Threshold
Voltage
VT
VFB=450mV
VT
Input stability
VTdV
VCC=2V ~15V
480
500
520
mV
VT variation with
temperature
VTdT
Ta=-30℃~+85℃
-
5
20
mV
Input bias current
IB
VIN=0V
-
1
-
%
Voltage Gain
AV
-
70
100
145
V/V
Frequency
bandwidth
BW
AV=0dB
-
6
-
MHz
VOM
+
0.78
0.87
-
V
Maximum output
voltage range
VOM
-
-
-
0.05
0.2
V
Output source
current
IOM
+
-
-40
-24
μA
Error amplifier
Output sink
current
IOM
-
VFB=0.45V
24
40
-
μA
Idle period
adjustment section
Maximum duty
cycle
tDUTY
RT=3.0KΩ
CT=270pF,VFB=0.8V
65
75
85
%
VOH1
RB
=390Ω,IO=-15mA
1.0
1.2
-
V
VOH2
RB
=750Ω,
VCC=-15mA,IO=-10mA
0.8
1.0
-
V
VOL1
RB
=390Ω,IO=15mA
-
0.1
0.2
V
Output voltage
VOL2
RB
=750Ω,
VCC=-15mA,IO=10mA
-
0.1
0.2
V
Output source
current
IO
+
RB
=390Ω,VO=0.9V
-
-30
-20
mA
Output sink
current
IO
-
RB
=390Ω,VO=0.3V
30
60
-
mA
Output section
Pull down
resistance
RO
-
20
30
40


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