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LD7538GL Datasheet(PDF) 5 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) 5 Page - Leadtrend Technology

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LD7538
5
Leadtrend Technology Corporation
LD7538-DS-00
November 2012
Electrical Characteristics
(TA = +25C unless otherwise stated, VCC=15.0V)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage (Vcc Pin)
Startup Current
VCC < UVLO (ON)
9
14
A
Operating Current
(with 1nF load on OUT pin)
VCOMP=0V
0.53
0.65
0.77
mA
VCOMP=3V
1.85
mA
OLP Tripped/ Auto, OTP=3V
0.52
mA
OVP Tripped/Latch, OTP=3V
0.95
mA
OTP Pin Tripped/Latch,
0.95
mA
Holding Current
VCC=6V (latched)
370
430
490
A
UVLO (off)
7.0
7.5
8.0
V
UVLO (on)
15
16
17
V
VCC OVP Level
27.5
28.5
29.5
V
VCC OVP pin de-bounce time
*
8
cycle
Voltage Feedback (Comp Pin)
Short Circuit Current
VCOMP=0V
0.105
0.125
0.145
mA
Open Loop Voltage
COMP pin open
4.75
5
5.25
V
Green Mode Threshold VCOMP
*
2.4
V
Zero Duty Threshold VCOMP
1.4
V
Zero Duty Hysteresis
100
mV
Current Sensing (CS/OVP pin)
Maximum Input Voltage, VCS_OFF
0.837
0.85
0.863
V
Max. OCP Compensation Current,
IOCP
234
240
246
A
Leading Edge Blanking Time, LEB
170
230
290
ns
Internal Slope Compensation
*0% to DMAX. (Linearly increase)
300
mV
Input impedance
1
M
Delay to Output
*
100
ns
Soft Start Duration
*
6.5
ms
Over Voltage Protection (CS/OVP pin)
OVP Trip Current Level
0.182
0.2
0.218
V
De-bounce Cycle
*
8
Cycle



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