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CS52845EDR14 датащи(PDF) 3 Page - Cherry Semiconductor Corporation

номер детали CS52845EDR14
подробное описание детали  Current Mode PWM Control Circuit with 50% Max Duty Cycle
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производитель  CHERRY [Cherry Semiconductor Corporation]
домашняя страница  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS52845EDR14 датащи(HTML) 3 Page - Cherry Semiconductor Corporation

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Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
Electrical Characteristics: Unless otherwise stated, specifications apply for -40 ≤ TA ≤ 85˚C; VCC = 15V (Note 1); RT = 10kΩ;
CT = 3.3nF for sawtooth mode.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s
Total Standby Current
Start-Up Current
0.5
1.0
mA
Operating Supply Current
VFB=VSense=0V RT=10kΩ, CT=3.3nF
11
17
mA
VCC Zener Voltage
ICC=25mA
34
V
s
PWM Section
Maximum Duty Cycle
46
48
50
%
Minimum Duty Cycle
0
%
s
Undervoltage Lockout Section
Start Threshold
7.8
8.4
9.0
V
Min. Operating Voltage
After Turn On
7.0
7.6
8.2
V
Notes:
1. Adjust VCC above the start threshold before setting at 15V.
3. Parameter measured at trip point of latch with VFB=0.
2.These parameters, although guaranteed, are not 100% tested in production.
4. Gain defined as: A =
; 0 ≤ VSense ≤ 0.8V.
∆VCOMP
∆VSense
8L
14L
SO Narrow
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
9
Gnd
Ground.
5
8
Pwr Gnd
Output driver Ground.
610
VOUT
Output drive pin.
711
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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