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AP3842 Datasheet(PDF) 3 Page - Anachip Corp

Part No. AP3842
Description  High Performance Current Mode PWM Controller
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Maker  ANACHIP [Anachip Corp]
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AP3842 Datasheet(HTML) 3 Page - Anachip Corp

   
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High Performance Current Mode PWM Controller
AP3842/3/4/5
Anachip Corp.
www.anachip.com.tw
Rev.1.0 Oct.11, 2004
3/8
Electrical Characteristics(Continued)
(Unless otherwise stated, these specifications apply for 0≦Tamb≦70
oC for AP384X ; Vi = 15V(note 5); RT = 10KΩ;CT = 3.3nF)
AP384X
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Unit
OSCILLATOR SECTION
fs
Oscillator Frequency
Tj=25
0C (Notes 6, 7)
49
52
55
KHz
Voltage Stability
12V≦Vi≦25V
0.2
1
%
Temperature Stability
TMIN≦Tamb≦TMAX (Notes 2)
0.5
%
V4
Amplitude
VPIN4 Peak to Peak
1.6
V
Discharge Current
Tj=25
0C VPIN4=2V
7.8
8.3
8.8
mA
ERROR AMP SECTION
V2
Feedback Input Voltage
VPIN1=2.5V
2.42 2.50 2.58
V
Ib
Input Bias Current
VFB=5V
-0.1
-2
µA
AVOL
0V≦V0≦4V
65
90
dB
B
Unity Gain Bandwidth
Tj=25
oC
0.7
1
MHz
SVRR
Supply Voltage Rejection
Ratio
12V≦Vi≦25V
60
70
dB
IO
Output Sink Current
VPIN2=2.7V VPIN1=1.1V
2
6
mA
IO
Output Source Current
VPIN2=2.3V VPIN1=5V
-0.5
-0.8
mA
VOUT High
VPIN2=2.3V; RL=15KΩ to ground
5
7
V
VOUT Low
VPIN2=2.7V; RL=15KΩ to pin 8
0.8
1.1
V
CURRENT SENSE SECTION
Gv
Gain
(Notes3&Notes4)
2.85
3
3.15
V/V
V3
Maximum Input Signal
VPIN1=5V (Notes3)
0.9
1
1.1
V
SVRR
Supply Voltage Rejection
Ratio
12≦Vi≦25V (Notes3)
70
dB
Ib
Input Bias Current
-2
-10
µA
Delay to Output
150
300
ns
OUTPUT SECTION
ISINK= 20mA
0.1
0.4
V
VOL
Output Low Level
ISINK= 200mA
1.6
2.2
V
ISOURCE= 20mA
13
13.5
V
VOH
Output High Level
ISOURCE= 200mA
12
13.5
V
Tr
Rise Time
Tj=25
0C C
L=1nF (Notes2)
50
150
ns
Tf
Fall Time
Tj=25
0C C
L=1nF (Notes2)
50
150
ns
VOLS
UVLO Saturation
Vcc = 6V ; Isink = 1mA
0.1
1.1
V
UNDER-VOLTAGE LOCKOUT SECTION
3842/4
14.5
16
17.5
V
Start Threshold
3843/5
7.8
8.4
9
V
3842/4
8.5
10
11.5
V
Min Operating Voltage After
Turn-on
3843/5
7.0
7.6
8.2
V
PWM SECTION
3842/3
94
96
%
Maximum Duty Cycle
3844/5
47
48
50
%
Minimum Duty Cycle
0
%
TOTAL STANDBY CURRENT
Ist
Start-up Current
Vi=14V,3842/4 ;
Vi=6.5V 3843/5
0.3
0.5
mA
Ii
Operating Supply Current
VPIN2=VPIN3=0V
12
17
mA
Viz
Zener Voltage
Ii=25mA
30
36
V


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