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LD7538GL Datasheet(PDF) 6 Page - Leadtrend Technology

Part # LD7538GL
Description  Green-Mode PWM Controller with Frequency Swapping and Integrated Protections
PDF  17 Pages
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Manufacturer  LEADTREND [Leadtrend Technology]
Direct Link  https://www.leadtrend.com.tw/
Logo LEADTREND - Leadtrend Technology

LD7538GL Datasheet(HTML) 6 Page - Leadtrend Technology

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LD7538
6
Leadtrend Technology Corporation
LD7538-DS-00
November 2012
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Oscillator for Switching Frequency
Frequency, FREQ
63
65
67
kHz
Green Mode Frequency, FREQG
21.5
25
28
kHz
Frequency Swapping
VCOMP>3V
 4.0
kHz
Temp. Stability
(-20
C ~85C)*
0
5
%
Voltage Stability
(VCC=11V-25V)*
0
1
%
Gate Drive Output (OUT Pin)
Output Low Level
VCC=15V, Io=20mA
1
V
Output High Level
VCC=15V, Io=20mA
8
15
V
Output High Clamp Level
VCC=20V
13
15
17
V
Rising Time
Load Capacitance=1000pF
--
150
250
ns
Falling Time
Load Capacitance=1000pF
50
75
ns
Max. Duty
71
75
79
%
OLP (Over Load Protection)
OLP Trip Level
4.2
4.4
4.6
V
OLP Delay Time at start-up
OLP+ Soft start*
71.5
ms
OLP Delay Time after start-up
60
65
70
ms
OTP Pin Latch Protection (OTP Pin)
OTP Pin Source Current
93
100
107
A
OTP Turn-On Trip Level
1.00
1.05
1.10
V
OTP Turn-Off Trip Level
0.9
0.95
1.0
V
OTP pin de-bounce time
VCOMP >3V
400
500
600
s
*: Guaranteed by design.



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