LT1509ISW#TR Linear Technology, LT1509ISW#TR Datasheet - Page 2

IC PFC CTRLR AVERAGE CURR 20SOIC

LT1509ISW#TR

Manufacturer Part Number
LT1509ISW#TR
Description
IC PFC CTRLR AVERAGE CURR 20SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT1509ISW#TR

Mode
Average Current
Frequency - Switching
100kHz
Voltage - Supply
27V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Startup
-
Lead Free Status / Rohs Status
Not Compliant

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ABSOLUTE
2
ELECTRICAL CHARACTERISTICS
LT1509
DESCRIPTION
By using fixed high frequency PWM current averaging
without the need for slope compensation, the LT1509
achieves far lower line current distortion with a smaller
magnetic element than systems that use either peak
current detection, or zero current switching approach, in
both continuous and discontinuous modes of operation.
The LT1509 also provides filtering capability to reject line
switching noise which can cause instability when fed into
PARAMETER
Overall
Supply Current (V
Supply Current On
V
V
Voltage Amplifier (PFC Section)
Voltage Amp Offset
Input Bias Current
Voltage Gain
Voltage Amp Unity-Gain Bandwidth
Voltage Amp Output High (Internally Clamped)
Voltage Amp Output Low
Voltage Amp Short-Circuit Current
Supply Voltage ........................................................ 27V
GTDR Current Continuous ...................................... 0.5A
GTDR Output Energy ................................................ 5 J
I
V
RAMP, V
I
Operating Junction Temperature Range
Thermal Resistance (Junction-to-Ambient)
Maximum operating voltage (V
VA
AC
SENSE
CC
CC
SENSE
OUT
Commercial ........................................... 0 C to 100 C
Industrial .......................................... – 40 C to 125 C
N Package ................................................... 100 C/W
SW Package ................................................ 120 C/W
, R
Turn-On Threshold (Undervoltage Lockout)
Turn-Off Threshold
= 5V, OVP = V
SET
, M
, OVP Input Voltage .................................... V
, PK
C
OUT
Input Voltage ............................................ 8V
LIM
CC
Input Current ................................... 5mA
in Undervoltage Lockout)
Input Current .............................. 20mA
W
REF
MAXIMUM
U
. No load on any outputs unless otherwise noted.
W W
MAX
) = 25V, V
RATINGS
CC
CONDITIONS
V
11.5V V
VA
V
VA
CC
SENSE
= 18V, R
OUT
OUT
= Lockout Voltage – 0.2V
U
= 3.5V
= 0V
= 0V to 7V
CC
SET
V
= 15k to GND, C
MAX
MAX
the multiplier. Line current dead zone is minimized with
low bias voltage at the current input to the multiplier.
The LT1509 provides many protection features including
peak current limiting and overvoltage protection. Imple-
mented with a very high speed process, the LT1509 can be
operated at frequencies as high as 300kHz.
PACKAGE/ORDER
Consult factory for Military grade parts.
GTDR1
CA
I
VA
PK
GND2
GND1
SENSE
M
20-LEAD PDIP
C
N PACKAGE
SET
OUT
OUT
OUT
SET
LIM
I
AC
T
T
= 1nF to GND, I
JMAX
JMAX
10
1
2
3
4
5
6
7
8
9
= 125 C,
= 125 C,
TOP VIEW
20-LEAD PLASTIC SO WIDE
JA
JA
= 100 C/ W (N)
= 120 C/ W (SW)
AC
SW PACKAGE
= 100 A, I
20
19
18
17
16
15
14
13
12
11
15.5
– 10
11.3
MIN
9.5
70
GTDR2
RAMP
V
V
SS1
R
V
SS2
V
OVP
3
C
CC
SENSE
REF
SET
INFORMATION
U
SENSE
0.25
16.5
10.5
13.3
TYP
– 25
100
1.1
13
3
8
= 0V, CA
ORDER PART
LT1509CN
LT1509CSW
LT1509IN
LT1509ISW
W
NUMBER
– 250
MAX
0.45
17.5
11.5
19
10
17
2
OUT
= 3.5V,
UNITS
U
MHz
mA
mA
mV
mA
nA
dB
V
V
V
V

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