Datasheet

LT1512
2
1512fb
For more information www.linear.com/LT1512
pin conFiguraTionabsoluTe MaxiMuM raTings
Input Voltage ........................................................... 30V
Switch Voltage ......................................................... 40V
S/S Pin Voltage ........................................................ 30V
FB Pin Voltage (Transient, 10ms) ........................... ±10V
V
FB
Pin Current ..................................................... 10mA
I
FB
Pin Voltage (Transient, 10ms) .......................... ±10V
Storage Temperature Range .................. –65°C to 150°C
Ambient Temperature Range
LT1512C (Note 2) ..................................... 0°C to 70°C
LT1512I ................................................ –40°C to 85°C
Operating Junction Temperature Range
LT1512C (Note 2) .............................. –20°C to 125°C
LT1512I .............................................. –40°C to 125°C
Short Circuit.......................................... 0°C to 150°C
Lead Temperature (Soldering, 10 sec) ................. 300°C
1
2
3
4
8
7
6
5
TOP VIEW
V
C
FB
I
FB
S/S
V
SW
GND
GND S
V
IN
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 125°C, q
JA
= 100°C/W (N)
T
JMAX
= 125°C, q
JA
= 130°C/W (S)
NOTE: CONTACT FACTORY CONCERNING 16-LEAD
FUSED-LEAD GN PACKAGE WITH LOWER THERMAL RESISTANCE
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
V
FB
Reference Voltage Measured at FB Pin
V
C
= 0.8V
l
1.233
1.228
1.245
1.245
1.257
1.262
V
V
FB Input Current V
FB
= V
REF
l
300 550
600
nA
nA
FB Reference Voltage Line Regulation 2.7V ≤ V
IN
≤ 25V, V
C
= 0.8V
l
0.01 0.03 %/V
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 5V, V
C
= 0.6V, V
FB
= V
REF
, I
FB
= 0V, V
SW
and S/S pins open,
unless otherwise noted.
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1512CN8#PBF LT1512CN8#TRPBF 1512 8-Lead PDIP 0°C to 70°C
LT1512CS8#PBF LT1512CS8#TRPBF 1512 8-Lead Plastic SO 0°C to 70°C
LT1512IN8#PBF LT1512IN8#TRPBF 1512I 8-Lead PDIP –40°C to 85°C
LT1512IS8#PBF LT1512IS8#TRPBF 1512I 8-Lead Plastic SO –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1512CN8 LT1512CN8#TR 1512 8-Lead PDIP 0°C to 70°C
LT1512CS8 LT1512CS8#TR 1512 8-Lead Plastic SO 0°C to 70°C
LT1512IN8 LT1512IN8#TR 1512I 8-Lead PDIP –40°C to 85°C
LT1512IS8 LT1512IS8#TR 1512I 8-Lead Plastic SO –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
(Note 1)