ld7552 Leadtrend Technology, ld7552 Datasheet - Page 4

• Manufacturer Part Number: ld7552
• Description: Green-mode Pwm Controller
• Manufacturer: Leadtrend Technology

Electrical Characteristics
Leadtrend Technology Corporation
LD7552-DS-00 February, 2005
(T
Supply Voltage (Vcc Pin)
Startup Current
Operating Current
UVLO (off)
UVLO (on)
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
A
= +25
o
C unless otherwise stated, V
PARAMETER
CC
=15.0V)
V
V
V
V
COMP pin open
RT=100KΩ
Fs=66.5KHz
(-30°C ~85°C)
(VCC=12V-30V)
VCC=15V, Io=20mA
VCC=15V, Io=20mA
Load Capacitance=1000pF
Load Capacitance=1000pF
COMP
COMP
COMP
COMP
=0V
=3V
=open
=0V
CONDITIONS
4
10.4
14.8
0.80
61.5
MIN
9
TYP
11.4
16.0
2.35
0.85
66.5
250
300
0.7
2.2
5.0
50
20
5
3
2
LD7552
MAX
12.4
17.5
0.90
71.5
160
3.0
25
60
4
5
2
1
UNITS
KHz
KHz
mA
mA
mA
mA
KΩ
µA
nS
nS
nS
nS
%
%
V
V
V
V
V
V
V