AMC3843B ETC, AMC3843B Datasheet - Page 5

• Manufacturer Part Number: AMC3843B
• Description: (AMC3842B / AMC3843B) CURRENT MODE PWM CONTROLLER
• Manufacturer: ETC

AMC DOC. #: AMC3842B_C (LF)
March 2004
Copyright © 2002, ADD Microtech Corp.
Error Amplifier Section
Output Section
Under-Voltage Lockout Section
PWM Section
Total Standby Current
note 6:
note 7:
note 8:
note 9:
Input Bias Current
Input Voltage
Open Loop Voltage Gain
Unity Gain Bandwidth (note 7)
Power Supply Rejection Ratio
Output Sink Current
Output Source Current
High Output Voltage
Low Output Voltage
Output Low Level
Output High Level
Rise Time (note 7)
Fall Time (note 7)
Start Threshold
Min. Operating Voltage
Maximum Duty Cycle
Startup Current
Operating Supply Current
Zener Voltage
Adjust V
These parameters, although guaranteed, are not 100% tested in production prior to shipment
Parameters are measured at trip point of latch with V
Gain is measured between I
CC
above the start threshold before setting at 15V
ELECTRICAL CHARACTERISTICS (Continued)
SENSE
UGBW
I
V
PSRR
V
SOURCE
and COMP with the input changing from 0V to 0.8V
I
I
G
V
V
V
V
TH(ST)
SINK
I
BIAS
V
I(EA)
t
t
CC
VO
OH
OL
OL
OH
r
f
Z
COMP = 2.5V
2V ≤ V
T
12V ≤ V
V
V
V
V
I
I
I
I
T
T
AMC3842B
AMC3843B
AMC3842B
AMC3843B
AMC3842B/43B
AMC3842B
AMC3843B
V
I
SINK
SINK
SOURCE
SOURCE
CC
J
J
J
FB
FB
FB
FB
FB
= 25
= 25
= 25
= 25mA
= 2.7V, COMP = 1.1V
= 2.3V, COMP = 5.0V
= 2.3V, R
= 2.7V, RL = 15KΩ to V
= I
5
= 20mA
= 200mA
SENSE
O
O
O
O
= 20mA
= 200mA
C
C, C
C, C
CC
≤ 4V
FB
≤ 25V
C
= 0V
= 2V
L
L
L
= 1nF
= 1nF
URRENT
= 15KΩ to GND
M
ODE
REF
AMC3842B/43B
2.42
14.5
-0.5
0.7
7.8
8.5
7.0
PWM C
65
60
13
12
94
30
2
5
2.50
13.5
13.0
16.0
-0.1
-1.0
0.7
0.1
1.4
8.4
7.6
0.2
0.5
90
70
50
50
10
97
14
35
1
7
6
ONTROLLER
www.addmtek.com
2.58
17.5
11.5
0.35
150
150
100
1.1
0.4
2.2
9.0
8.2
1.0
17
-2
MHz
mA
mA
mA
mA
µA
dB
dB
ns
ns
%
V
V
V
V
V
V
V
V