LT1108CS8-5 Linear Technology, LT1108CS8-5 Datasheet - Page 2

• Manufacturer Part Number: LT1108CS8-5
• Description: IC DC/DC CONV FIXED OUT 5V 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Step-Up (Boost), Invertingr

Specifications of LT1108CS8-5

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 400mA
• Frequency - Switching: 19kHz
• Voltage - Input: 2 ~ 30 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 500mW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LT1108
A
Supply Voltage (V
SW1 Pin Voltage (V
SW2 Pin Voltage (V
Feedback Pin Voltage (LT1108) ............................. 5.5V
Sense Pin Voltage (LT1108, -5, -12) ...................... 36V
PACKAGE/ORDER I FOR ATIO
SYMBOL
I
V
V
f
t
V
V
2
ELECTRICAL C
Q
OSC
ON
IN
OUT
OL
SAT
BSOLUTE
SW1
SW2
I
LIM
V
IN
T
PARAMETER
Quiescent Current
Quiescent Current, Boost Mode Configuration
Input Voltage
Comparator Trip Point Voltage
Output Sense Voltage
Comparator Hysteresis
Output Hysteresis
Oscillator Frequency
Duty Cycle
Switch-ON Time
Feedback Pin Bias Current
Set Pin Bias Current
Gain Block Output Low
Reference Line Regulation
SW
JMAX
1
2
3
4
8-LEAD PLASTIC DIP
*FIXED VERSIONS
SAT
= 90 C,
N8 PACKAGE
TOP VIEW
Voltage, Step-Up Mode
IN
W
JA
) ............................................... 36V
SW1
SW2
= 130 C/W
A
HARA TERISTICS
) ......................................... 50V
) ............................ – 0.5V to V
XI
8
7
6
5
FB (SENSE*)
SET
A0
GND
W
U
C
U
W
R
A
LT1108CN8
LT1108CN8-5
LT1108CN8-12
ORDER PART
W
TI
NUMBER
U
G
S
T
A
U
= 25 C, V
Step-Up Mode
CONDITIONS
Switch OFF
No Load
Step-Down Mode
LT1108 (Note 1)
LT1108-5 (Note 2)
LT1108-12 (Note 2)
LT1108
LT1108-5
LT1108-12
Full Load, Step-Up Mode
I
LT1108, V
V
I
2V V
5V V
V
V
LIM
SINK
IN
SET
IN
IN
= 3V, I
= 5V, I
Tied to V
= V
= 100 A, V
IN
IN
REF
Maximum Power Dissipation ............................ 500mW
Maximum Switch Current ...................................... 1.5A
Operating Temperature Range .................... 0 C to 70 C
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
IN
FB
SW
SW
5V
30V
= 3V, unless otherwise noted.
= 0V
IN
= 650mA
= 1A
, Step-Up Mode
SW1
SW2
I
SET
LIM
V
LT1108-5
LT1108-12
IN
T
JMAX
= 1V
8-LEAD PLASTIC SOIC
1
2
3
4
*FIXED VERSIONS
= 90 C,
S8 PACKAGE
TOP VIEW
JA
= 150 C/W
8
7
6
5
FB (SENSE*)
SET
A0
GND
4.75
11.4
MIN
1.2
14
63
28
2
1.245
0.15
0.20
0.02
TYP
250
110
135
0.5
0.8
12
20
50
19
70
36
10
20
S8 PART MARKING
5
5
LT1108CS8
LT1108CS8-5
LT1108CS8-12
ORDER PART
NUMBER
0.400
0.075
1108
10805
10812
MAX
12.6
30.0
5.25
12.6
0.65
1.00
150
100
100
1.3
0.4
10
40
25
78
48
50
UNITS
%/V
%/V
kHz
mV
mV
mV
nA
nA
%
A
A
A
V
V
V
V
V
V
V
V
s