LT1111CS85PBF LINEAR TECH, LT1111CS85PBF Datasheet - Page 2

• Manufacturer Part Number: LT1111CS85PBF
• Manufacturer: LINEAR TECH

LT1111
A
Supply Voltage (V
SW1 Pin Voltage (V
SW2 Pin Voltage (V
Feedback Pin Voltage (LT1111) ............................. 5.5V
Switch Current ....................................................... 1.5A
Maximum Power Dissipation ............................ 500mW
PACKAGE/ORDER I FOR ATIO
temperature range, otherwise specifications are at T
SYMBOL
I
V
V
f
DC
t
V
ELECTRICAL C
2
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Q
OSC
ON
IN
OUT
SAT
BSOLUTE
SW1
SW2
I
LIM
V
IN
T
T
JMAX
JMAX
1
2
3
4
8-LEAD PLASTIC DIP
PARAMETER
Quiescent Current
Input Voltage
Comparator Trip Point Voltage
Output Sense Voltage
Comparator Hysteresis
Output Hysteresis
Oscillator Frequency
Duty Cycle: Step-Up Mode
Switch ON Time: Step-Up Mode
SW Saturation Voltage, Step-Up Mode
SW Saturation Voltage, Step-Down Mode
*FIXED VERSIONS
8-LEAD CERAMIC DIP
= 150 C,
= 90 C,
N8 PACKAGE
TOP VIEW
J8 PACKAGE
Consider the N8 Package for Alternate Source
OBSOLETE PACKAGE
JA
IN
W
JA
Step-Down Mode
= 130 C/W (N)
) ............................................... 36V
SW1
SW2
= 120 C/W (J)
A
HARA TERISTICS
8
7
6
5
Step-Down Mode
) ......................................... 50V
) ............................ – 0.5V to V
XI
FB (SENSE)*
SET
A0
GND
W
U
C
U
W
R
A
ORDER PART
LT1111CN8
LT1111CN8-5
LT1111CN8-12
LT1111MJ8
LT1111MJ8-5
LT1111MJ8-12
W
TI
NUMBER
U
A
= 25 C.V
G
S
The
U
CONDITIONS
Switch OFF
Step-Up Mode
Step-Down Mode
LT1111 (Note 2)
LT1111-5 (Note 3
LT1111-12 (Note 3)
LT1111
LT1111-5
LT1111-12
Full Load
I
V
V
V
V
(Note 1)
LIM
IN
IN
OUT
IN
IN
IN
denotes the specifications which apply over the full operating
= 3.0V, I
= 5.0V, I
= 12V, I
= 3V, Military or Commercial Version
Tied to V
, = 5V, V
Operating Temperature Range
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
SW
SW
SW
SW1
SW2
I
IN
IN
LIM
V
LT1111C ............................................... 0 C to 70 C
LT1111I ......................................... – 40 C to 105 C
LT1111M (OBSOLETE) ............. – 55 C to 125 C
IN
= 650mA
= 650mA
= 1A
= 12V
1
2
3
4
T
8-LEAD PLASTIC SO
JMAX
*FIXED VERSION
S8 PACKAGE
TOP VIEW
= 90 C,
JA
= 150 C/W
8
7
6
5
FB (SENSE)*
SET
A0
GND
11.40
MIN
1.20
2.0
4.75
3.3
54
43
24
5
12.00
1.25
TYP
300
5.00
0.5
0.8
1.1
32
75
72
50
34
S8 PART MARKING
8
7
5
ORDER PART
LT1111CS8
LT1111CS8-5
LT1111CS8-12
LT1111IS8
NUMBER
12.60
1111
11115
11111
1111I
MAX
12.6
30.0
1.30
12.5
400
120
5.25
7.8
0.65
1.0
1.5
50
88
59
50
9
UNITS
1111fd
kHz
mV
mV
mV
%
%
A
V
V
V
V
V
V
V
V
s
s