Champion CM6800T, Общее описание устройства

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CM6800T
(Turbo-Speed PFC+Green PWM)
http://www.championmicro.com.tw
EPA/85+ PFC+PWM COMBO CONTROLLER
Design for High Efficient Power Supply
2010/08/03
Rev. 1.2
Champion Microelectronic Corporation 8
ELECTRICAL CHARACTERISTICS
(Conti.)
Unless otherwise stated, these specifications apply
Vcc=+14V, R
T
= 5.88 k Ω , C
T
= 1000pF, T
A
=Operating Temperature Range (Note 1)
CM6800T
Symbol Parameter Test Conditions
Min. Typ. Max.
Unit
Reference
Output Voltage
T
A
= -45
℃
~85
℃
, I(VREF) = 0~3.5mA
7.3 7.5 7.7 V
Line Regulation
11V < V
CC
< 16.5V@ T=25
℃
3 5 mV
VCC=10.5V,0mA < I(VREF) < 2mA;
@ T=25
℃
25 50 mV
Load Regulation
VCC=14V,0mA < I(VREF) < 3.5mA;
T
A
= -40
℃
~85
℃
25 50 mV
Temperature Stability 0.4 %
Total Variation Line, Load, Temp 7.3 7.7 V
Long Term Stability
T
J
= 125
℃
, 1000HRs
5 25 mV
PFC
Minimum Duty Cycle IEAO > 4.5V 0 %
Maximum Duty Cycle V
IEAO
< 1.2V 93 95 %
I
OUT
= -20mA @ T=25
℃ 13 18 ohm
I
OUT
= -100mA @ T=25
℃
18 ohm Output Low Rdson
I
OUT
= 10mA, V
CC
= 9V @ T=25
℃
0.5 1 V
I
OUT
= 20mA @ T=25
℃ 24 30 ohm
Output High Rdson
I
OUT
= 100mA @ T=25
℃
40 ohm
Rise/Fall Time (Note 4)
C
L
= 100pF @ T=25
℃
50 ns
PWM
Duty Cycle Range 0-49.5 0-50 %
I
OUT
= -20mA @ T=25
℃
13 18 ohm
I
OUT
= -100mA @ T=25
℃
18 ohm
Output Low Rdson
I
OUT
= 10mA, V
CC
= 9V 0.5 1 V
I
OUT
= 20mA @ T=25
℃
26.5 40 ohm
Output High Rdson
I
OUT
= 100mA @ T=25
℃
40 ohm
Rise/Fall Time (Note 4) C
L
= 100pF 50 ns
PWM Comparator Level Shift
@ T=25
℃ 1.6 1.8 2 V
Soft Start
Soft Start Current
Room Temperature=2
5℃ 7 10 12
μ
A
Soft Start Discharge Current Vrms=0.926V, Soft Start=8V 0.5 3 6
μ
A
Supply
Start-Up Current V
CC
= 12V, C
L
= 0 @ T=25
℃
50 65
μ
A
Operating Current 14V, C
L
= 0 2.5 3.5 mA
Turn-on Undervoltage Lockout Threshold CM6800T 12.35 12.85 13.65 V
Turn-off Undervoltage Lockout Threshold CM6800T 9.75 10.25 V
Turn-off Undervoltage Lockout Hysteresis CM6800T 2.8 2.95 3.1 V
Shunt Regulator (VCC zener)
Zener Threshold Voltage Apply VCC with Iop=20mA 16.15 17 17.85 V
Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
Note 2: Includes all bias currents to other circuits connected to the V
FB
pin.
Note 3: Gain ~ K x 5.3V; K = (I
SENSE
– I
OFFSET
) x [I
AC
(VEAO – 0.7)]
-1
; VEAO
MAX
= 6V
Note 4: Guaranteed by design, not 100% production test.