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NCL30081ASNT1G PDF даташит

Спецификация NCL30081ASNT1G изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «Dimmable Quasi-Resonant Primary Side Current-Mode Controller».

Детали детали

Номер произв NCL30081ASNT1G
Описание Dimmable Quasi-Resonant Primary Side Current-Mode Controller
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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NCL30081ASNT1G Даташит, Описание, Даташиты
NCL30081
Product Preview
Dimmable Quasi-Resonant
Primary Side Current-Mode
Controller for LED Lighting
The NCL30081 is a PWM current mode controller targeting isolated
flyback and nonisolated constant current topologies. The controller
operates in a quasiresonant mode to provide high efficiency. Thanks
to a novel control method, the device is able to precisely regulate a
constant LED current from the primary side. This removes the need
for secondary side feedback circuitry, biasing and an optocoupler.
The device is highly integrated with a minimum number of external
components. A robust suite of safety protection is built in to simplify
the design. This device is specifically intended for very compact space
efficient designs. It supports step dimming by monitoring the AC line
and detecting when the line has been toggled onoffon by the user to
reduce the light intensity in 5 steps down to 5% dimming.
Features
http://onsemi.com
1
TSOP6
SN SUFFIX
CASE 318G
MARKING DIAGRAM
AAxAYWG
G
Quasiresonant Peak Currentmode Control Operation
1
Primary Side Sensing (no optocoupler needed)
Wide VCC Range
Precise LED Constant Current Regulation ±1% Typical
Line Feedforward for Enhanced Regulation Accuracy
Low LED Current Ripple
250 mV ±2% Guaranteed Voltage Reference for Current Regulation
AAx = Specific Device Code
x = G or H
A = Assembly Location
Y = Year
W = Work Week
G = PbFree Package
(Note: Microdot may be in either location)
~ 0.9 Power Factor with Valley Fill Input Stage
Low Startup Current (10 mA typ.)
Small Space Saving Low Profile Package
5 State Quasilog Dimmable
Wide Temperature Range of 40 to +125°C
PIN CONNECTIONS
1
ZCD
VIN
GND
VCC
Pbfree, Halidefree MSL1 Product
CS DRV
Robust Protection Features
Over Voltage / LED Open Circuit Protection
Secondary Diode Short Protection
Output Short Circuit Protection
Shorted Current Sense Pin Fault Detection
Latched and Autorecoverable Versions
Brownout
VCC Under Voltage Lockout
Thermal Shutdown
(Top View)
Typical Applications
Integral LED Bulbs
LED Power Driver Supplies
LED Light Engines
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
© Semiconductor Components Industries, LLC, 2013
January, 2013 Rev. P0
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 23 of this data sheet.
1 Publication Order Number:
NCL30081/D









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NCL30081ASNT1G Даташит, Описание, Даташиты
NCL30081
16
25
34
.
.
Aux
.
Figure 1. Typical Application Schematic for NCL30081
Table 1. PIN FUNCTION DESCRIPTION
Pin No
Pin Name
Function
1
ZCD
Zero Crossing Detection
2 GND
3 CS
Current sense
4 DRV
Driver output
5
VCC
Supplies the controller
6 VIN Input voltage sensing
BrownOut
Pin Description
Connected to the auxiliary winding, this pin detects the core reset event.
The controller ground
This pin monitors the primary peak current
The current capability of the totem pole gate drive (+0.3/0.5 A) makes it suit-
able to effectively drive a broad range of power MOSFETs.
This pin is connected to an external auxiliary voltage.
This pin observes the HV rail and is used in valley selection. This pin also
monitors and protects for low mains conditions.
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NCL30081ASNT1G Даташит, Описание, Даташиты
NCL30081
GND
ZCD
CS
STOP
VDD
VREF
Aux_SCP
CS_shorted
Fault
Management
OFF
UVLO
Latch
VCC Management
Qdrv
Zero Crossing Detection
Aux. Winding
Short Circuit Protection
VVIN offset_OK
Internal
Thermal
Shutdown
Aux_SCP
Ipkmax
VVIN VREF
VCC_max
WOD_SCP
BO_NOK
VCC Over Voltage
Protection
VCC
Valley Selection
offset_OK
S Q Qdrv
Clamp
Circuit
VVLY
Line
Feedforward
STEP_DIM
STOP
VREF
R
Leading
Edge
Blanking
VVIN
ConstantCurrent
Control
CS_reset
Ipkmax STOP
Max. Peak
Current
Limit
Ipkmax
CS Short
Protection
CS_shorted
STEP_DIM
Winding and
Output diode
Short Circuit
Protection
WOD_SCP
VVIN
Step
Dimming
BrownOut
BO_NOK
Figure 2. Internal Circuit Architecture
VCC
DRV
VIN
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Номер в каталогеОписаниеПроизводители
NCL30081ASNT1GDimmable Quasi-Resonant Primary Side Current-Mode ControllerON Semiconductor
ON Semiconductor

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