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LED driver. IS31LT3929 Datasheet

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LED driver. IS31LT3929 Datasheet






IS31LT3929 driver. Datasheet pdf. Equivalent




IS31LT3929 driver. Datasheet pdf. Equivalent





Part

IS31LT3929

Description

Flyback configuration LED driver



Feature


IS31LT3929 General Description Prelimin ary Features • • • • • Power factor correction to > 0.9 3% typical c urrent accuracy No loop compensation re quired Wide input voltage range: 85V to 265VAC Internal over-temperature prote ction Flyback configuration LED driver with integrated PFC and no feedback T he IS31LT3929 is a primary side, peak c urrent mode, isolated type H.
Manufacture

ISSI

Datasheet
Download IS31LT3929 Datasheet


ISSI IS31LT3929

IS31LT3929; BLED driver. The device works at a const ant frequency in discontinuous conducti on mode to provide a constant power to the input. It eliminates the need for a n opto-coupler, TL431, or any other typ e of secondary side feedback. It operat es from an input voltage range of 85VAC to 265VAC. The IS31LT3929 integrates o ver current/voltage protection, as well as includes a the.


ISSI IS31LT3929

rmal shutdown to halt the switching acti on in the case of abnormally high opera ting temperatures. Typical Operating Ci rcuit Fuse 85~265Vac BD Applications • • AC/DC constant current LED d river General AC/DC power supply Genera l LED Lighting TR C1 C3 R1 R3 D1 D4 L ED1 R5 C6 R8 LEDn U1 VCC VSINE FSET N C R2 R4 3929 Q1 GATE CS FB GND Rcs htt p://www.DataSheet4U.net/.


ISSI IS31LT3929

C2 D3 R6 C4 R7 C5 D2 Figure 1 Typic al Operating Circuit Copyright © 2011 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the righ t to make changes to this specification and its products at any time without n otice. ISSI assumes no liability arisin g out of the application or use of any information, products or services descr ibed herein. Custom.

Part

IS31LT3929

Description

Flyback configuration LED driver



Feature


IS31LT3929 General Description Prelimin ary Features • • • • • Power factor correction to > 0.9 3% typical c urrent accuracy No loop compensation re quired Wide input voltage range: 85V to 265VAC Internal over-temperature prote ction Flyback configuration LED driver with integrated PFC and no feedback T he IS31LT3929 is a primary side, peak c urrent mode, isolated type H.
Manufacture

ISSI

Datasheet
Download IS31LT3929 Datasheet




 IS31LT3929
IS31LT3929
Preliminary
Flyback configuration LED driver with integrated PFC and no feedback
General Description
Features
The IS31LT3929 is a primary side, peak current
mode, isolated type HBLED driver. The device
works at a constant frequency in discontinuous
conduction mode to provide a constant power to the
input. It eliminates the need for an opto-coupler,
TL431, or any other type of secondary side feedback.
It operates from an input voltage range of 85VAC to
265VAC.
The IS31LT3929 integrates over current/voltage
protection, as well as includes a thermal shutdown to
halt the switching action in the case of abnormally
high operating temperatures.
Power factor correction to > 0.9
3% typical current accuracy
No loop compensation required
Wide input voltage range: 85V to 265VAC
Internal over-temperature protection
Applications
AC/DC constant current LED driver
General AC/DC power supply
General LED Lighting
Typical Operating Circuit
Fuse BD
85~265Vac
C1
R1
R3
TR
C3 R5
D1
C2
R2 R4
U1 3929
VCC
VSINE
FSET
NC
GATE http://www.DataSheet4U.net/
CS
FB
GND
Q1
Rcs
D4
C6
LED1
R8
LEDn
D3
C4
D2
R6
C5
R7
Figure 1 Typical Operating Circuit
Copyright © 2011 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time
without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised
to obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 4/2/2012
1
datasheet pdf - http://www.DataSheet4U.net/




 IS31LT3929
IS31LT3929
Preliminary
Pin Configurations
Package
Top View
SOP-8
Pin Descriptions
Pin
1
2
3
4
5
6
7
8
Name
VSINE
NC
FSET
GND
FB
CS
GATE
VCC
Function
Line voltage sense input required for PFC.
No connect. Must leave floating in the application.
Connect a resistor from this pin to GND to set the operating frequency
Ground. Common to all internal circuitry.
Auxiliary winding voltage sensing pin for OVP.
Primary winding peak current detection input.
Power NMOS gate driving output
Internal circuit power supply input.
Ordering Information
Order Part No.
Package
IS31LT3929-GRLS2-TR SOP-8, Lead-free
http://www.DataSheet4U.net/
QTY/Reel
2500
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 4/2/2012
2
datasheet pdf - http://www.DataSheet4U.net/




 IS31LT3929
IS31LT3929
Absolute Maximum Ratings
Preliminary
Parameter
Value
VCC to GND
VSINE, NC, FSET, CS, FB
VCC Max. Input Current(note)
Junction Temperature Range
Storage Temperature Range
ESD Human Model
-0.3V to 30V
-0.3V to 5.5V
10mA
-40oC to +150oC
-65oC to +150oC
4000V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only
and functional operation of the device at these or any other condition beyond those indicated in the operational sections of the specifications is
not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
(Unless otherwise specified, VCC=16V, FB=0V, VSINE=2.5V, RSET=300K, and Tamb=25 oC)
Symbol
Parameter
Conditions
spec
Min Typ
Vth_s VCC start voltage threshold
VCC rising
14.5 16
Vth_d VCC undervoltage threshold
VCC falling
78
Vgate
GATE output voltage clamp value
16 17.5
Icc Quiescent Supply Current
Ist Startup current
Not switching
http://www.DataSheet4U.net/
VCC < Vth_s
600
60
Vcs
Tblank
Primary peak current control
threshold
Blanking time
0.5
500
Tr Rise time
CL = 1nF
100
Tf Fall time
CL = 1nF
50
Vovp_H OVP rising threshold
1.25
Vovp_L OVP falling threshold
1.0
f Operating frequency
RSET = 300k
50
Dmax Maximum duty cycle
50
Tre1
Short circuit protection delay
F = 50k
80
Tre2
CS over current protection delay F = 50k
80
Max
17.5
9
19
Unit
V
V
V
uA
uA
V
ns
ns
ns
V
V
kHz
%
ms
ms
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 4/2/2012
3
datasheet pdf - http://www.DataSheet4U.net/



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