AMC3842B Datasheet, PDF (4/11 Pages) List of Unclassifed Manufacturers – CURRENT MODE PWM CONTROLLER

AMC3842B/43B/44B/45B
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Recommended Operating Conditions
Min.
Typ.
Max.
Supply Voltage
V_CC / V_C
30
Input Voltage
Output Voltage
Supply Current
V_I,R_T/C_T
0
5.5
V_I,I_SENSE/V_FB
V_O, Output
0
30
I_CC
25
Average Output Current
Reference Output Current
Timing Capacitor
I_O
200
I_O(REF)
-20
C_T
1
Oscillator Frequency
f_OSC
100
500
Operating Free-air Temperature
T_A
0
70
Units
V
V
V
mA
mA
mA
nF
KHz
O_C
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the operating ambient temperature for AMC384XB with
0^OC ≤ T_A ≤70 ^OC; V_CC = 15V(note 7); R_T = 10K;C_T = 3.3nF. Low duty cycle pulse testing techniques are used which
maintains junction and case temperatures equal to the ambient temperature.
Parameter
Symbol
Test Conditions
Reference Section
Reference output Voltage
V_REF T_J = 25 ^OC, I_REF = 1mA
Line Regulation
Load Regulation
Short Ciruit Output Current
Oscillator Section
12V ≤ V_CC ≤ 25V,T_J = 25 ^OC
1mA ≤ I_REF ≤ 20mA
I_SC T_J = 25 ^OC
Oscillation Frequency
Frequency Change with Voltage
Frequency Change with Temperature
(note 8)
f T_J = 25 ^OC
12V ≤ V_CC ≤ 25V
T_MIN ≤ T_A ≤ T_MAX
Peak-to-peak Amplitude At R_T/C_T
V_OSC
Current Sense Section
Gain (note 9 & 10)
Maximum Input Signal (note 9)
A_VOL
V_I(MAX)
Power Supply Rejection Ratio (note 9) PSRR
Input Bias Current
I_BIAS
COMP = 5V
12V ≤ V_CC ≤ 25V (note 9)
AMC384XB
Units
Min. Typ. Max.
4.9 5.0 5.1 V
6
20 mV
6
25 mV
-30 -100 -180 mA
47 52 57 KHz
0.2 1.0 %
5
%
1.7
V
2.85 3.00 3.15 V/V
0.9 1.0 1.1 V
70
dB
-3.0 -10 µA
Copyright © 2006 ADDtek Corp.
4
DD019_F -- OCTOBER 2006