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BA9741 Datasheet(PDF) 3 Page - E-Tech Electronics LTD

Part # BA9741
Description  TWO-CHANNEL SWITCHING REGULATOR CONTORLLER
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Manufacturer  ETL [E-Tech Electronics LTD]
Direct Link  http://e-tech.com.hk
Logo ETL - E-Tech Electronics LTD

BA9741 Datasheet(HTML) 3 Page - E-Tech Electronics LTD

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UTCBA9741
LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD. 3
QW-R103-017,B
ABSOLUTE MAXIMUM RATINGS( Ta=25°C )
PARAMETER
SYMBOL
VALUE
UNIT
Power Supply Voltage
Vcc
36
V
Power Dissipation (note 1)
SOP-16
DIP-16
Pd
500
650
mW
Operating Temperature
Topr
-40 to 85
°C
Storage Temperature
Tstg
-55 to 125
°C
Output Current
Io
120(note 2)
mA
Output Voltage
Vo
36
V
Note 1: When mounted on 70mm*70mm*1.6mm glass epoxy board.
Reduced by 5.0mW,for each increase in Ta of 1
°C over 25°C
Note 2: Should not exceed Pd and ASO values.
RECOMMENDED OPERATING CONDITIONS( Ta=25°C )
PARAMETER
SYMBOL
MIN
TYP.
MAX
UNIT
Power Supply Voltage
Vcc
3.6
6.0
35
V
Output Current
Io
100
mA
Output Voltage
Vo
35
V
Error Amplifier Input Voltage
VOM
0.3
1.6
V
Timing Capacitor
CCT
100
15000
pF
Timing Resistor
RRT
5.1
50
k
Oscillator Frequency
FOSC
10
800
kHz
ELECTRICAL CHARACTERISTICS( TA=25°C ,VCC=6V,UNLESS OTHERWISE NOTED.)
PARAMETER
SYMBOL
TEST CONIDITIONS
MIN
TYP. MAX UNIT
REFERENCE VOLTAGE BLOCK
Output Voltage
Vref
Iref =1mA
2.4
2.5
2.6
V
Input Stability
VDLI
Vcc =3.6~35V
1
10
mV
Load Stability
VDLO
Iref =0~5mA
1
10
mV
TRIANGULAR WAVE OSCILLATOR
Oscillation Frequency
Fosc
RRT=10 k
Ω ,CCT=220pF
320
400
480
kHz
Frequency Deviation
FDV
Vcc=3.6~35V
1
%
PROTECTION CIRCUIT
Threshold Voltage
VIT
1.48
1.64
1.80
V
Standby Voltage
VSTB
No pull up
50
100
mV
Latch Voltage
VLT
No pull up
30
100
mV
Source Current
ISCP
1.5
2.5
3.5
µ
A
Comparator Threshold Voltage
VCT
5Pin,12Pin
0.9
1.05
1.2
V
REST PERIOD ADJUSTMENT CIRCUIT
Vt0
Duty Cycle =0%
1.79
1.97
2.15
V
Input Threshold Voltage
(fosc=10kHz)
Vt100
Duty Cycle =100%
1.32
1.48
1.64
V


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