Datasheet

2
LT1513/LT1513-2
sn1513 1513fas
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
Supply 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
Operating Junction Temperature Range
LT1513C............................................... 0°C to 125°C
LT1513I ............................................ –40°C to 125°C
Short Circuit ......................................... 0°C to 150°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
E
LECTR
IC
AL C CHARA TERIST
ICS
V
IN
= 5V, V
C
= 0.6V, V
FB
= V
REF
, I
FB
= 0V, V
SW
and S/S pins open, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
FB Reference Voltage Measured at FB Pin 1.233 1.245 1.257 V
V
C
= 0.8V ● 1.228 1.245 1.262 V
FB Input Current V
FB
= V
REF
300 550 nA
● 600 nA
FB Reference Voltage Line Regulation 2.7V ≤ V
IN
≤ 25V, V
C
= 0.8V ● 0.01 0.03 %/V
V
IREF
I
FB
Reference Voltage (LT1513) Measured at I
FB
Pin –107 –100 –93 mV
V
FB
= 0V, V
C
= 0.8V ● –110 –100 –90 mV
I
FB
Input Current V
IFB
= V
IREF
(Note 2) ● 10 25 35 µA
I
FB
Reference Voltage Line Regulation 2.7V ≤ V
IN
≤ 25V, V
C
= 0.8V ● 0.01 0.05 %/V
I
FBVOS
I
FB
Voltage Offset (LT1513-2) (Note 3) I
VFB
= 60µA (Note 4) ● –7.5 2.5 12.5 mV
I
FB
Input Current V
IFB
= V
IREF
● –200 –10 0 nA
V
FB
Source Current V
IREF
= –10mV, V
FB
= 1.2V ● –700 –300 –100 µA
g
m
Error Amplifier Transconductance ∆I
C
= ±25µA 1100 1500 1900 µmho
● 700 2300 µmho
Error Amplifier Source Current V
FB
= V
REF
– 150mV, V
C
= 1.5V ● 120 200 350 µA
Error Amplifier Sink Current V
FB
= V
REF
+ 150mV, V
C
= 1.5V ● 1400 2400 µA
WU
U
PACKAGE
/
O
RDER I FOR ATIO
Consult factory for Military grade parts.
ORDER PART
NUMBER
LT1513CR
LT1513-2CR
LT1513IR
LT1513-2IR
T
JMAX
= 125°C, θ
JA
= 30°C/W
WITH PACKAGE SOLDERED TO 0.5INCH
2
COPPER
AREA OVER BACKSIDE GROUND PLANE OR INTERNAL
POWER PLANE, θ
JA
CAN VARY FROM 20°C/W TO
> 40°C/W DEPENDING ON MOUNTING TECHNIQUE
R PACKAGE
7-LEAD PLASTIC DD
FRONT VIEW
TAB
IS
GND
V
IN
S/S
V
SW
GND
I
FB
FB
V
C
7
6
5
4
3
2
1
ORDER PART
NUMBER
LT1513-2CT7
LT1513-2IT7
T
JMAX
= 125°C, θ
JA
= 50°C/ W, θ
JC
= 4°C/W
T7 PACKAGE
7-LEAD TO-220
V
IN
S/S
V
SW
GND
I
FB
FB
V
C
FRONT VIEW
7
6
5
4
3
2
1