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LD7536S PDF даташит

Спецификация LD7536S изготовлена ​​​​«Leadtrend» и имеет функцию, называемую «Green-Mode PWM Controller».

Детали детали

Номер произв LD7536S
Описание Green-Mode PWM Controller
Производители Leadtrend
логотип Leadtrend логотип 

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LD7536S Даташит, Описание, Даташиты
LD7536S
4/5/2012
Green-Mode PWM Controller with Frequency Swapping
and Integrated Protections
Rev. 00a
General Description
The LD7536S is built-in with several functions, protection
and EMI-improved solution in a tiny package. It takes less
components counts or circuit space, especially ideal for
those total solutions of low cost.
The implemented functions include low startup current,
green-mode power-saving operation, leading-edge
blanking of the current sensing and internal slope
compensation. It also features more protections like
OLP (Over Load Protection) and OVP (Over Voltage
Protection) to prevent circuit damage occurred under
abnormal conditions.
Furthermore, the Frequency Swapping function is to
reduce the noise level and thus helps the power circuit
designers to easily deal with the EMI filter design by
spending minimum amount of component cost and
developing time.
Features
High-Voltage CMOS Process with Excellent ESD
protection
Very Low Startup Current (<20A)
Current Mode Control
Green Mode Control
UVLO (Under Voltage Lockout)
LEB (Leading-Edge Blanking) on CS Pin
Internal Frequency Swapping
Internal Slope Compensation
OVP (Over Voltage Protection) on Vcc Pin
OTP (Over Temperature Protection) through a NTC
OLP (Over Load Protection)
300mA Driving Capability
Applications
Switching AC/DC Adaptor and Battery Charger
Open Frame Switching Power Supply
Typical Application
AC
input
EMI
Filter
OTP
VCC
OUT
COMP
LD7536S
CS
GND
Leadtrend Technology Corporation
LD7536S-DS-00a April 2012
1
www.leadtrend.com.tw
DC
Output
photocoupler









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LD7536S Даташит, Описание, Даташиты
Pin Configuration
DIP-8 (TOP VIEW)
8765
TOP MARK
YYWWPP
1 23 4
LD7536S
SOT-26 (TOP VIEW)
OUT VCC CS
65
36S
YWP pp
12
4
3
GND COMP OTP
Ordering Information
YY, Y : Year code (D: 2004, E: 2005…..)
WW, W : Week code
PP : Production code
P36S : LD7536S
Part number
Package
LD7536S GL
SOT-26
LD7536S GN
DIP-8
The LD7536S is Green Packaged.
Protection Mode
Switching Freq.
65kHz
VCC OVP
Auto recovery
Top Mark
YWP/36S
LD7536SGN
Shipping
3000 /tape & reel
3600 /tube /Carton
OLP
Auto recovery/ 65ms
OTP Pin
Latch
Pin Descriptions
SOT-26
1
DIP-8
8
NAME
GND
2 7 COMP
3 5 OTP
4 4 CS
5 2 VCC
6 1 OUT
FUNCTION
Ground
Voltage feedback pin (same as the COMP pin in UC384X). Connect a
photo-coupler to close the control loop and achieve the regulation.
Pull this pin below 0.95V to shutdown the controller into latch mode until the AC
resume power-on. Connecting this pin to ground with NTC will achieve OTP
protection. Keep this pin float to disable the latch protection.
Current sense pin, connect it to sense the MOSFET current
Supply voltage pin
Gate drive output to drive the external MOSFET
Leadtrend Technology Corporation
LD7536S-DS-00a April 2012
2
www.leadtrend.com.tw









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LD7536S Даташит, Описание, Даташиты
Block Diagram
LD7536S
Leadtrend Technology Corporation
LD7536S-DS-00a April 2012
3
www.leadtrend.com.tw










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