LD7750AGR Просмотр технического описания (PDF) - Unspecified
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производитель
LD7750AGR Datasheet PDF : 19 Pages
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Pin Configuration
SOP-7 (TOP VIEW)
SOP-8/DIP-8 (TOP VIEW)
LD7750A
8
65
TOP MARK
YYWWPP
1 234
8765
TOP MAR K
YYWWPP
1 23 4
YY:
WW:
PP:
Year code
Week code
Production code
Ordering Information
Part number
LD7750A GS
Package
SOP-8
Green package
Top Mark
LD7750AGS
LD7750A GR
SOP-7
Green package LD7750AGR
LD7750A GN
DIP-8
Green package
The LD7750A is ROHS compliant.
LD7750AGN
Protection Mode
Part number
LD7750A
Switching Freq.
65kHz
VCC OVP
Latch
OLP
Auto recovery
Shipping
2500 /tape & reel
2500 /tape & reel
3600 /tube /Carton
OTP Pin
Latch
Pin Descriptions
SOP-8
SOP-7
1
1
2
2
3
3
4
4
5
5
6
6
7
8
8
NAME
OTP
COMP
CS
GND
OUT
VCC
NC
HV
FUNCTION
Pulling this pin below 0.95V will shutdown the controller to enter latch
mode until the AC power-on recycles. Connecting a NTC between this
pin and ground will achieve OTP protection function. Let this pin float to
disable the latch protection.
Voltage feedback pin. Connecting a photo-coupler with it can close
control loop and achieve regulation.
Current sense pin, for sensing the MOSFET current.
Ground.
Gate drive output to drive the external MOSFET.
Supply voltage pin.
Unconnected Pin.
Connect this pin to a positive terminal of bulk capacitor to provide the
startup current for the controller. When Vcc voltage trips the UVLO(on),
this HV loop will be turned off to reduce the power loss on the startup
circuit.
Leadtrend Technology Corporation
LD7750A-DS-00 June 2010
2
www.leadtrend.com.tw
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