HFC0400 – FIXED-FREQUENCY FLYBACK CONTROLLER WITH ULTRA-LOW NO LOAD POWER CONSUMPTION
ELECTRICAL CHARACTERICS
For typical value T
J
=25°C, unless otherwise noted
Parameter
Start-up Current Source (HV)
Supply Current from HV
Leakage Current from HV
Break-Down Voltage
Supply Voltage Management (VCC)
VCC Current-Source Turn-Off Level,
Rising
VCC Threshold for HV Turn-On Detection,
Falling
VCC Hysteresis for HV Turn-On Detection
VCC Current-Source Turn-On Level,
Falling
VCC UVLO Hysteresis
VCC Re-charge Level When Protection
Occurs
VCC Decreasing Level When Latch-Off
Phase Ends
Internal IC Consumption
Internal IC Consumption, Latch Off Phase
Voltage above V
CC
Where the Controller
Latches Off (OVP)
OVP Comparator Blanking Duration
Brown-out
HV Turn-On Threshold
HV Turn-Off Threshold
Brown-Out Hysteresis
Timer Duration for Line Cycle Drop-out
Oscillator
Oscillator Frequency
Frequency Jitter Amplitude,
in Percentage of f
OSC
Frequency Jitter Modulation Period
Current Sense
Current Limit
Short-Circuit Protection Level
Leading-Edge Blanking for V
ILIM
Leading-Edge Blanking for V
SCP
Slope of the Compensation Ramp
Symbol
I
HV
I
HV
V
BR
VCC
OFF
VCC
SS
VCC
OFF
−
VCC
SS
VCC
ON
VCC
OFF
−
VCC
ON
VCC
PRO
VCC
LATCH
I
CC
I
CCLATCH
V
OVP
τ
OVP
HV
ON
HV
OFF
HV
τ
HV
f
OSC
A
jitter
τ
jitter
V
ILIM
V
SCP
τ
LEB1
τ
LEB2
S
RAMP
C
TIMER
=47nF
0.9
1.3
20
V
HV
rising
V
HV
falling
C
TIMER
=47nF
95
90
4
50
60
V
FB
=2V;C
L
=1nF,
V
CC
=12V
V
CC
=6V
1
520
22
Conditions
V
CC
=6V;V
HV
=400V
V
CC
=10V;V
HV
=400V
Min
1.6
12
700
12
9.5
1.5
7.0
5
4.7
Typ
1.85
15
Max
2.1
18
Unit
mA
μA
V
V
V
V
9.0
V
V
5.9
V
V
2
650
27
mA
μA
V
μs
120
115
6.4
V
V
V
ms
kHz
%
ms
1
1.55
30
V
V
ns
ns
mV/μs
14.5
11.5
3
8.0
6.5
5.3
2.5
1.5
585
25
26
108
103
5.2
17
13.5
65
6.7
3.7
0.95
1.45
350
270
25
69.5
HFC0400 Rev. 1.0
11/28/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
4
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