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  ON Semiconductor Electronic Components Datasheet  

NCL30073 Datasheet

Current-Mode PWM Controller

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NCL30073
Current-Mode PWM
Controller for LED
Application
The NCL30073 is a highly integrated PWM controller capable of
delivering a rugged and high performance LED converter in a tiny
TSOP−6 package. With a supply range up to 24 V, the controller hosts
a 65 kHz switching circuitry operated in peak current mode control.
When the voltage on FB pin decreases, the controller enters skip cycle
while limiting the peak current.
Over Power Protection (OPP) is a difficult exercise especially when
no−load standby requirements drive the converter specifications. The
ON proprietary integrated OPP lets you harness the maximum
delivered power without affecting your standby performance simply
via two external resistors. An Over Voltage Protection is also
combined on the same pin but also on the VCC line. They offer an
efficient protection in case of adverse open loop operation.
Finally, a timer−based short−circuit protection offers the best
protection scheme, letting you precisely select the protection trip point
without caring of a loose coupling between the auxiliary and the power
windings.
Features
Fixed−frequency 65 kHz Current−mode Control Operation
Internal and Adjustable Over Power Protection (OPP) Circuit
Internal Ramp Compensation
Internally Fixed 4 ms Soft−start
115 ms Timer−based Auto−recovery Short−circuit Protection
Protection − Autorecovery
OVP by VCC
OIP
OTP − Foldback
Short Circuit
Up to 24 V VCC Operation
Extremely Low No−load Standby Power
Isolated and Non−isolated Outputs
Good Regulation – 5%
High Power Factor > 0.9
Single Winding Inductor
Low Parts Count
EPS 2.0 Compliant
Pb−Free Devices
+300 mA/ −500 mA Source/Sink Drive Capability
Typical Application
Dimmable Retrofit and Low Power Fixture LED Applications
Phase Cut Dimmer Compatible – LE or TE Types
Multiple Topology Support
Buck
Buck Boost
Flyback
© Semiconductor Components Industries, LLC, 2017
May, 2017 − Rev. 1
1
www.onsemi.com
1
TSOP−6
CASE 318G−02
MARKING DIAGRAM
73AAYWG
G
1
73A = Specific Device Code
A =Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
OPP
FB
CS
VCC
DRV
GND
TSOP−6 (Top view)
ORDERING INFORMATION
Device
NCL30073SN065T1G
Package
TSOP−6
(Pb−Free)
Shipping
3000 / Tape
& Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
Publication Order Number:
NCL30073/D


  ON Semiconductor Electronic Components Datasheet  

NCL30073 Datasheet

Current-Mode PWM Controller

No Preview Available !

NCL30073
TYPICAL APPLICATION SCHEMATIC
Figure 1. Typical Non−isolated (Buck−Boost) Application
Figure 2. Typical Isolated (Flyback) Application Example
Table 1. PIN FUNCTION DESCRIPTION
Pin # Pin Name
Function
Pin Description
1
OPP
Adjust the Over Power A resistive divider from the auxiliary winding to this pin sets the OPP compensation
Protection
level. When brought above 3 V, the part enters auto−recovery mode.
2 FB
Feedback pin
A voltage variation on this pin will allow regulation.
3 CS Current Sense + Slope This pin monitors the primary peak current but also offers a means to introduce slope
Compensation
compensation.
4 GND
The controller ground.
5 DRV
Driver Output
The driver output to an external MOSFET gate.
6 VCC Supplies the Controller − This pin is connected to an external auxiliary voltage. When the VCC exceeds
Protects the IC
a certain level, the part enters an auto−recovery hiccup mode.
www.onsemi.com
2


Part Number NCL30073
Description Current-Mode PWM Controller
Maker ON Semiconductor
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