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LD7577 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - High Voltage Green-Mode PWM Controller - Leadtrend

भाग संख्या LD7577
समारोह High Voltage Green-Mode PWM Controller
मैन्युफैक्चरर्स Leadtrend 
लोगो Leadtrend लोगो 
पूर्व दर्शन
1 Page
		
<?=LD7577?> डेटा पत्रक पीडीएफ

LD7577 pdf
Pin Configuration
SOP-8 & DIP-8 (TOP VIEW)
8765
TOP MARK
YYWWPP
1 234
YY:
WW:
PP:
Year code
Week code
Production code
LD7577
Ordering Information
Part number
Package
LD7577 GS
SOP-8
Green package
LD7577 GN
DIP-8
Green package
The LD7577 is ROHS compliant.
Top Mark
LD7577GS
LD7577GN
Shipping
2500 /tape & reel
3600 /tube /Carton
Pin Descriptions
PIN NAME
1 BNO
2 COMP
3 CS
4 GND
5 OUT
6 VCC
7 NC
8 HV
FUNCTION
Brownout Protection Pin. Connect a resistor divider between this pin and bulk
capacitor voltage to set the brownout level. If the voltage is less than threshold
voltage, the PWM output will be disabled. As soon as the voltage is over 4.0V, the
OVP will be tripped and the gate drive will be turned off.
Voltage feedback pin. By connecting a photo-coupler to close the control loop, it can
achieve the regulation.
Current sense pin. Connect it to sense the MOSFET current.
Ground.
Gate drive output to drive the external MOSFET.
Supply voltage pin.
Unconnected Pin.
Connect this pin to positive terminal of bulk capacitor to provide the startup current
for the controller. When VCC voltage trips UVLO(on), this HV loop will be turned off
to save the power loss of the startup circuit.
Leadtrend Technology Corporation
LD7577-DS-01 January 2009
2
www.leadtrend.com.tw

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डाउनलोड[ LD7577 Datasheet.PDF ]


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