ld7575b Leadtrend Technology, ld7575b Datasheet - Page 5

• Manufacturer Part Number: ld7575b
• Description: Green-mode Pwm Controller With High-voltage Start-up Circuit
• Manufacturer: Leadtrend Technology

Electrical Characteristics
Leadtrend Technology Corporation
LD7575B-DS-00 May 2008
(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
Green Mode Threshold VCOMP
Current Sensing (CS Pin)
Maximum Input Voltage
Leading Edge Blanking Time
Input impedance
Delay to Output
Oscillator (RT pin)
Frequency
Green Mode Frequency
Temp. Stability
Voltage Stability
Gate Drive Output (OUT Pin)
Output Low Level
Output High Level
Rising Time
Falling Time
OLP (Over Load Protection)
OLP Trip Level
OLP Delay Time (note)
A
Note: The OLP delay time is proportional to the period of switching cycle. So that, the lower RT value will set the higher
= +25
switching frequency and the shorter OLP delay time.
o
C unless otherwise stated, V
PARAMETER
CC
=15.0V)
Vcc< UVLO(on), HV=500V
Vcc> UVLO(off), HV=500V
V
V
Protection tripped (OVP)
Protection tripped (OLP)
V
COMP pin open
RT=100KΩ
Fs=65.0KHz
(-40°C ~105°C)
(VCC=11V-25V)
VCC=15V, Io=20mA
VCC=15V, Io=20mA
Load Capacitance=1000pF
Load Capacitance=1000pF
Fs=65KHz
COMP
COMP
COMP
=0V
=3V
=0V
CONDITIONS
5
15.0
25.0
0.80
60.0
MIN
0.5
9.0
1
9
TYP
0.43
10.0
16.0
27.5
2.35
0.85
65.0
220
100
1.0
0.5
2.4
2.9
0.5
1.5
6.3
5.0
21
50
30
33
LD7575B
MAX
11.0
17.0
30.0
0.90
70.0
160
1.5
3.4
4.4
2.2
35
60
5
1
1
UNITS
KHz
KHz
MΩ
mA
mA
mA
mA
mA
mA
mA
mS
μA
nS
nS
nS
nS
%
%
V
V
V
V
V
V
V
V
V