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CS2841B Datasheet(PDF) 3 Page - Cherry Semiconductor Corporation

Part # CS2841B
Description  Automotive Current Mode PWM Control Circuit
PDF  6 Pages
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Manufacturer  CHERRY [Cherry Semiconductor Corporation]
Direct Link  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS2841B Datasheet(HTML) 3 Page - Cherry Semiconductor Corporation

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3
Electrical Characteristics: continued
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s
Output Section
Output Low Level
ISINK=20mA
0.1
0.4
V
ISINK=200mA
1.5
2.2
V
Output High Level
ISOURCE=20mA
13.0
13.5
V
ISOURCE=200mA
12.0
13.5
V
Rise Time
TJ=25˚C, CL=1nF (Note 2)
50
150
ns
Fall Time
TJ=25˚C, CL=1nF (Note 2)
50
150
ns
Output Leakage
Undervoltage Active, VOUT=0
-0.01
-10.00
µA
s
Total Standby Current
Start-Up Current
0.5
1.0
mA
Operating Supply Current ICC VFB=VSense=0V, RT=10kΩ, CT=3.3nF
11
17
mA
s
Under-Voltage Lockout Section
Start Threshold
7.6
8.0
8.4
V
Min. Operating Voltage
After Turn On
7.0
7.4
7.8
V
Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
8L PDIP
14L SO Narrow
1
1
COMP
Error amp output, used to compensate error amplifier
23
VFB
Error amp inverting input
3
5
Sense
Noninverting input to Current Sense Comparator
4
7
OSC
Oscillator timing network with Capacitor to Ground, resistor
to VREF
5
8
Gnd
Ground
9
Pwr Gnd
Output driver Ground
610
VOUT
Output drive pin
11
VCCPwr
Output driver positive supply
712
VCC
Positive power supply
814
VREF
Output of 5V internal reference
2,4,6,13
NC
No Connection



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