LT1248IS Linear Technology, LT1248IS Datasheet - Page 2

• Manufacturer Part Number: LT1248IS
• Description: IC PFC CTRLR AVERAGE CURR 16SOIC
• Manufacturer: Linear Technology

Specifications of LT1248IS

• Mode: Average Current
• Frequency - Switching: 300kHz
• Current - Startup: 250µA
• Voltage - Supply: 15.5 V ~ 27 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A
LT1248
(Note 1)
Supply Voltage ....................................................... 27V
GTDR Current Continuous ..................................... 0.5A
GTDR Output Energy(Per Cycle) .............................. 5 J
I
V
I
Operating Junction Temperature Range
Thermal Resistance (Junction-to-Ambient)
Storage Temperature Range ..................–65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
ture range, otherwise specifications are at T
C
PARAMETER
Overall
Supply Current (V
Supply Current (Inactive)
Supply Current, On
V
V
EN/SYNC Threshold, Rising
EN/SYNC Threshold Hysteresis
EN/SYNC Input Current
Voltage Amplifier
Voltage Amp Offset Voltage
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
SS Current
Current Amplifier
Current Amp Offset Voltage
I
Current Amp Voltage Gain
Current Amp Unity-Gain Bandwidth
Current Amp Output High
Current Amp Output Low
ELECTRICAL C
2
SENSE
AC
SENSE
CC
CC
SET
SENSE
BSOLUTE
LT1248C ................................................ 0 C to 100 C
LT1248I ........................................... – 40 C to 125 C
N Package .................................................. 100 C/W
S Package ................................................... 120 C/W
, R
Turn-On Threshold (Undervoltage Lockout)
Turn-Off Threshold
= 1nF to GND, I
Bias Current
SET
, M
, EN/SYNC, OVP Input Voltage ................... V
, PK
OUT
LIM
CC
Input Current .................................. 5mA
in Undervoltage Lockout)
Input Current ............................. 20mA
AC
W
= 100 A, I
A
HARA TERISTICS
XI
W
SENSE
U
C
W
= 0V, CA
R
A
A
= 25 C. Maximum operating voltage (V
OUT
TI
U
= 3.5V, VA
G
CONDITIONS
V
EN/SYNC = 0V, V
11.5V V
EN/SYNC = 0V
3V EN/SYNC 7V
VA
V
VA
SS = 2.5V
CC
SENSE
S
OUT
OUT
The
= Lockout Voltage – 0.2V
MAX
= 3.5V
= 0V
= 0V to 7V
OUT
CC
denotes specifications which apply over the full operating tempera-
= 5V, OVP = 7.5V, no load on any outputs, unless otherwise noted.
V
PACKAGE/ORDER I FOR ATIO
Consult factory for Military grade parts.
MAX
CC
, CA
CA
I
VA
PK
SENSE
M
V
GND
OVP
OUT
OUT
OUT
LIM
I
MAX
AC
OUT
16-LEAD NARROW PLASTIC SO
T
T
JMAX
JMAX
= 1V
1
2
3
4
5
6
7
8
= 125 C,
= 125 C,
16-LEAD PDIP
N PACKAGE
S PACKAGE
TOP VIEW
MAX
JA
JA
) = 25V, V
= 100 C/W (N)
= 120 C/W (S)
16
15
14
13
12
11
10
9
GTDR
V
C
SS
R
V
EN/SYNC
V
CC
CC
SET
SENSE
REF
SET
15.5
11.3
MIN
– 50
9.5
2.2
7.2
– 5
– 8
70
80
5
5
= 18V, R
U
0.25
16.5
10.5
0.40
– 25
13.3
TYP
– 25
100
– 25
110
0.5
8.5
2.6
– 1
1.1
8.5
1.1
SET
14
12
3
3
1
ORDER PART
= 15k to GND,
LT1248CN
LT1248IN
LT1248CS
LT1248IS
NUMBER
W
– 250
– 250
MAX
0.45
12.0
17.5
11.5
2.85
1.5
50
30
30
5
8
2
2
4
UNITS
U
MHz
MHz
mA
mA
mA
mV
mA
mV
nA
dB
nA
dB
V
V
V
V
A
A
V
V
A
V
V