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LX1562IM

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25
P
RODUCTION
D
ATA
S
HEET
T
HE
I
NFINITE
P
OWER OF
I
NNOVATION
L
IN
F
INITY
M
ICROELECTRONICS
I
NC
.
11861
W
ESTERN
A
VENUE
,
G
ARDEN
G
ROVE
,
CA.
92841,
714-898-8121,
F
AX
:
714-893-2570
1
Copyright © 1996
Rev. 1.3a,2005-03-09
LX1562/1563
S
ECOND
-G
ENERATION
P
OWER
F
ACTOR
C
ONTROLLER
DESCRIPTION
The LX1562 is a second-generation
family of power factor correction
controllers using a discontinuous mode of
operation. They are optimized for
electronic ballast applications. Many
improvements have been made over the
original SG3561A controller introduced by
Silicon General Semiconductor in 1992.
New features include the addition of an
internal start-up circuit eliminating bulky
external components while allowing
independent boost converter operation.
Addition of internal current sense blanking
eliminating the need for an external R/C
filter network. Internal clamping of the
error amplifier and multiplier outputs
improves turn on overshoot characteristics
and current limiting.
Special circuitry has also been added to
prevent no load runaway conditions. And
finally, output drive clamps limiting power
MOSEFT gate drive independent of supply
voltage greatly enhance the products
practical application.
Although the IC design has been
optimized for electronic ballast
applications, it can also be used for power
factor correction in lower power (typical <
300W) AC-DC converters. One unique
feature of the device is encompassed by
the addition of internal logic circuitry to
detect zero crossing of the inductor current
thus maintaining the discontinuous current
mode of operation. This feature prevents
large current gaps from appearing thereby
minimizing distortion and enhancing
power factor correction.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
Typical Application Of The LX1562 In An 80W Fluorescent
Lamp Ballast With Active Power Factor Control
V
IN
I
DET
OUT
COMP
INV
C.S.
GND
MULT
LX1562
1RF730
230V
FLOURESCENT LAMP BALLAST
IN
5
8
7
2
1
4
6
3
EMI FILTER
120V
AC
22k
100k
½W
2.2M
1%
1µF
250V
1N4004
29k
1%
.01µF
1N4935
22µF
47
Ω
0.1µF
1M
Ω
1%
100µF
400V
MR854
11k
1%
1.3
Ω
R9 620k
3x
1/4W
1N4148
A
C+
AC-
1N4004
1N4004
1N4004
0.1µF
450µH
61T #22AWG
7T
R10
4.7M
D5
R4
R3
L1
R1
C1
D1 D3
D2
D4
R2
C4
C3
C2
D7
R7
R8
C6
V
BOOST
D6
R5
C5
R6
Q1
Note: Thick trace on schematic shows high-frequency, high-current path in circuit.
Lead lengths must be minimized to avoid high-frequency noise problems.
KEY FEATURES
Internal Start-Up Circuit
Internal Current Sense Blanking
Improved MicroPower Start-Up
Current (300µA maximum)
Clamped E.A. Output For Lower
Turn-On Overshoot
Multiplier Clamp Limits Maximum
Input Current
Internal Over Voltage Protection
Replaces Built-In C.S. Offset
PWM Output Clamp Limits
MOSFET Gate Drive Voltage
Increased UVLO Hysteresis
Reduces Start-Up Timing
(LX1562 Only)
Low Operating Current
Consumption
Internal 1.5% Reference
Totem Pole Output Stage
Automatic Current Limiting of
Boost Stage
Discontinuous Mode of
Operation With No Current Gaps
No Slope Compensation
Required
KEY FEATURES
Electronic Ballast
Switching Power Supplies
Available Options Per Part #
Part #
Start-Up
Voltage
Hysteresis
Voltage
LX1562 13.1V 5.2V
LX1563 9.8V 2.1V
PACKAGE ORDER INFO
M
Plastic DIP
8-Pin
DM
Plastic SOIC
8-Pin
T
A
(°C)
RoHS Compliant / Pb-free
Transition D/C: 0503
RoHS Compliant / Pb-free
Transition D/C: 0440
LX1562IM LX1562IDM
0 to 100
LX1563IM LX1563IDM
Note: Available in Tape & Reel. Append the letters “TR” to the part number (i.e. LX5241CDB-
TR).
OBSOLETE PRODUCT
NOT RECOMMENDED FOR NEW DESIGNS
S ECOND-GENERATION POWER FACTOR CONTROLLER
LX1562/1563
PRODUCT DATABOOK 1996/1997
Copyright © 1996
Rev. 1.3a 8/30
2
P
RODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage (V
IN
) ...................................................................................... -0.3V to 28V
Peak Driver Output Current (Note 3) ................................................................. ±500mA
Driver Output Clamping Diodes
V
O
> V
CC
or V
O
< -0.3V........................................................................................ ±10mA
Detector Clamping Diodes
V
DET
> 6V or V
DET
< 0.9V ..................................................................................... ±10mA
Error Amp, Multiplier, and Comparator Input Voltages ................................ -0.3V to 6V
Detector Input Voltage (Note 2)....................................................................... -0.3 to 6V
Operating Junction Temperature
Plastic (M and DM Packages)............................................................................... 150°C
Storage Temperature Range ...................................................................... -65°C to 150°C
Lead Temperature (Soldering, 10 Seconds)............................................................300°C
PACKAGE PIN OUTS
V
IN
OUT
GROUND
I
DET
E.A. INV.
E.A. OUT
MULT. INPUT
C.S.
1 8
27
36
45
M PACKAGE
(Top View)
DM PACKAGE
(Top View)
V
IN
OUT
GROUND
I
DET
E.A. INV.
E.A. OUT
MULT. INPUT
C.S.
1 8
27
36
45
Note 1. Values beyond which damage may occur. All voltages are specified with respect to
ground, and all currents are positive into the specified terminal.
Note 2. With no limiting resistor.
Note 3. Current duty cycle is chosen such that T
J
is below 150°C.
THERMAL DATA
M PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθ
θθ
θ
JA
95°C/W
DM PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθ
θθ
θ
JA
165°C/W
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x θ
JA
).
The θ
JA
numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow
Pb-free / RoHS Peak Package Solder Reflow Temp (40 second max. exposure)...............260°C (+0, -5)
RoHS / Pb-free 100% Matte Tin Lead Finish
OBSOLETE PRODUCT
NOT RECOMMENDED FOR NEW DESIGNS
S ECOND-GENERATION POWER FACTOR CONTROLLER
LX1562/1563
PRODUCT DATABOOK 1996/1997
3
Copyright © 1996
Rev. 1.3a 8/30
P RODUCTION DATA SHEET
Supply Voltage Range
Peak Driver Output Current
Operating Ambient Temperature Range:
LX1562/1563
RECOMMENDED OPERATING CONDITIONS (Note 4)
Parameter
Symbol
Units
Recommended Operating Conditions
Min. Typ. Max.
11 25 V
±200 mA
0 100 °C
Note 4. Range over which the device is functional.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX1562/1563 with 0°C ≤ T
A
≤ 100°C; V
IN
=12V. Low duty cycle pulse
testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Under-Voltage Lockout Section
Parameter
Symbol
Test Conditions
Start Threshold Voltage V
ST
LX1562 Only
LX1563 Only
UV Lockout Hysteresis ∆V
H
LX1562 Only
LX1563 Only
Units
LX1562I/1563I
Min. Typ. Max.
12 13.1 14 V
9.2 9.8 10.6 V
4 5.2 6 V
1.7 2.1 2.5 V
Supply Current Section
Start-Up Supply Current I
ST
V
IN
< V
TH
Operating Supply Current I
Q
V
IN
= 12V, Output Not Switching
Dynamic Operating Supply Current I
OP
V
IN
= 12V, 50kHz, CGS = 1000pF
200 300 µA
58mA
610mA
Reference Section (Note 5)
Initial Accuracy (Note 8) V
R
I
REF
= 0mA, T
A
= 25°C
I
REF
= 0mA
Line Regulation ∆V
I
12V < V
IN
< 25V
Load Regulation ∆V
L
0 < I
REF
< 2mA
Temperature Stability ∆V
T
2.465 2.50 2.535 V
2.44 2.56 V
0.1 mV
1.3 mV
20 mV
Error Amplifier Section
Input Bias Current I
B
Large Signal Open Loop Voltage Gain A
VOL
(Note 5)
Slew Rate S
Power Supply Rejection Ratio (Note 5) PSRR 11 to 25V
Output Source Current I
SR
V
OH
= 3V
Output Sink Current I
SK
V
OL
= 2V
Output Voltage Range (Note 7) E.A.
O
No Load on E.A. Output
Unity Gain Bandwidth f
B
Phase Margin φ
B
-500 50 500 nA
60 80 dB
0.63 V/µsec
60 80 dB
-2 -4.5 mA
3 4.5 mA
1.2 3.8 V
1.7 MHz
49 °
Multiplier Section
Mult. Input Voltage Range V
M1
M2 Input Voltage Range V
M2
Mult. Input Bias Current (M1) I
MB
Multiplier Gain (Note 5 & 6) K V
M1
= 1V, ∆V
EA0
= 2.7V to 3.3V
∆V
M1
= 0.5V to 1.5V, V
EA0
= V
REF
+ 1V
Multiplier Gain Temperature Stability ∆K
T
Maximum Multiplier Output Voltage V
CLMP
V
M1
= 2V, V
PIN1
= 0V
02V
V
REF
V
REF
+ 1 V
-0.24 µA
0.55 0.68 0.8 V/V
2
0.55 0.61 0.75 V/V
2
-0.2 %/°C
1.1 1.24 1.45 V
(Electrical Characteristics continue next page.)
OBSOLETE PRODUCT
NOT RECOMMENDED FOR NEW DESIGNS
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25

LX1562IM

Mfr. #:
Buy LX1562IM
Manufacturer:
Microchip / Microsemi
Description:
IC PFC CONTROLLER 8DIP
Lifecycle:
New from this manufacturer.
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