ld7578h Leadtrend Technology, ld7578h Datasheet - Page 5

• Manufacturer Part Number: ld7578h
• Description: High Voltage Green-mode Pwm Controller With Over Temperature Protection
• Manufacturer: Leadtrend Technology

Electrical Characteristics
Leadtrend Technology Corporation
LD7578H-DS-00 February 2010
(T
High-Voltage Supply (HV Pin)
High-Voltage Current Source
Off-State Leakage Current
Supply Voltage (Vcc Pin)
Startup Current
Operating Current
(with 1nF load on OUT pin)
UVLO (off)
UVLO (on)
OVP Level
Voltage Feedback (Comp Pin)
Short Circuit Current
Open Loop Voltage
Fixed Frequency Mode Threshold
Vcomp
Green Mode Threshold VCOMP
Burst Mode Threshold Vcomp
Current Sensing (CS Pin)
Maximum Input Voltage,Vcs_off
Maximum Input Voltage,Vcs_min
Leading Edge Blanking Time
Leading Edge Blanking Time
Input impedance
Delay to Output
Oscillator for Switching Frequency
Frequency
Green Mode Frequency
A
= +25
o
C unless otherwise stated, V
PARAMETER
www.leadtrend.com.tw
CC
=15.0V)
Vcc< UVLO(on), HV=500V
Vcc> UVLO(off), HV=500V
Vcc=UVLO(off)
V
V
OLP tripped, Latch
OVP tripped, Latch
(-)Latch Pin Tripped
V
COMP pin open
V
V
65KHz
65KHz
COMP
COMP
COMP
COMP
COMP
=0V,Fsw=65KHz
=3V,Fsw=65KHz
=0V
>1.9V
<1.9V
CONDITIONS
5
15.0
26.5
0.80
60.0
MIN
0.5
9.0
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1700
TYP
0.78
0.75
10.0
16.0
28.0
2.15
0.85
0.73
65.0
320
250
100
1.0
3.3
3.3
2.5
1.5
5.8
2.7
1.4
22
-
-
LD7578H
MAX
11.0
17.0
29.5
0.90
70.0
1.5
3.8
3.9
2.2
35
-
-
-
-
-
-
-
-
-
-
-
-
-
-
UNITS
KHz
KHz
mA
mA
mA
mA
mA
mA
mA
MΩ
μA
μA
nS
nS
nS
V
V
V
V
V
V
V
V
V