MIC3808_11 Datasheet, PDF (4/11 Pages) MIC GROUP RECTIFIERS – Push-Pull PWM Controller

MIC3808/3809
Absolute Maximum Ratings (Note 1)
Supply Voltage (I_DD ≤ 10mA) ...................................... +15V
Supply Current ........................................................... 20mA
OUTA/OUTB Source Current (peak) .......................... –0.5A
OUTA/OUTB Sink Current (peak) ................................ 1.0A
Comp Pin ...................................................................... V_DD
Analog Inputs (FB, CS) ........................ –0.3V to V_DD +0.3V
NOT TO EXCEED 6V
Junction Temperature .............................. –55°C to +150°C
Storage Temperature ............................... –65°C to +150°C
Lead Temperature (soldering, 10 sec.) ................... +300°C
ESD Rating, Note 3 ...................................................... 2kV
Micrel
Operating Ratings (Note 2)
V_DD Input Voltage (V_DD) ........................................ Note 11
Oscillator Frequency (f_OSC) ....................... 10kHz to 1MHz
Ambient Temperature (T_A) ......................... –40°C to +85°C
Package Thermal Resistance
SOIC-8 (θ_JA) ...................................................... 160°C/W
MSOP-8 (θ_JA) .................................................... 206°C/W
Electrical Characteristics
T_A = T_J = –40°C to +85°C, V_DD = 10V (Note 9), 1µF capacitor from V_DD to GND, R = 22KΩ, C = 330pF.
Parameter
Condition
Oscillator Section
Oscillator Frequency
Oscillator Amplitude/VDD
Note 4
Error Amp Section
Input Voltage
COMP = 2V
Input Bias Current
Open Loop Voltage Gain
(Guaranteed by design)
COMP Sink Current
FB = 2.2V, COMP = 1V
COMP Source Current
FB = 1.3V, COMP = 3V, Note 5
COMP Clamp Voltage
PWM Section
V_FB = 0V
Maximum Duty Cycle
Measured at OUTA or OUTB
Minimum Duty Cycle
COMP = 0V
Current Sense Section
Gain
Note 6 (Guaranteed by design)
Maximum Input Signal
Note 7
CS to Output Delay
COMP = 3V, CS from 0 to 600mV
CS Source Current
CS Sink Current
CS = 0.5V, RC = 5.5V, Note 8
Over Current Threshold
COMP to CS Offset
CS = 0V
Output Section
OUT Low Level
I = 100mA
OUT High Level
Rise Time
Fall Time
I = –50mA, V_DD - OUT
C_L = 1nF
C_L = 1nF
Min Typ Max Units
180 200 220 kHz
0.44 0.5 0.56 V/V
1.95
2
2.05
V
–1
1
µA
60
80
dB
0.3
2.5
mA
–0.15 –0.5
mA
3.1
3.6
4.0
V
48
49
50
%
0
%
1.9
2.2
2.5
V/V
0.45 0.5 0.55
V
70
200
ns
–200
nA
5
10
mA
0.7 0.75 0.8
V
0.35 0.8
1.2
V
0.5
1
V
0.5
1
V
25
60
ns
25
60
ns
MIC3808/3809
4
April 2005