LTC1147 Linear Technology, LTC1147 Datasheet - Page 2

• Manufacturer Part Number: LTC1147
• Description: High Efficiency Step-Down Switching Regulator Controllers
• Manufacturer: Linear Technology

LTC1147-3.3
LTC1147-5/LTC1147L
ABSOLUTE AXI U RATI GS
Input Supply Voltage (Pin 1)..................... 16V to – 0.3V
Continuous Output Current (Pin 8) ...................... 50mA
Sense Voltages (Pins 4, 5)
SYMBOL
V
I
V
I
2
PACKAGE/ORDER I FOR ATIO
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
6
Q
6
OUT
V
OUT
V
V
IN
IN
< 12.7V ............................... (V
8-LEAD PLASTIC DIP
SENSE
12.7V ...........................................13V to – 0.3V
N8 PACKAGE
PARAMETER
Feedback Voltage (LTC1147L)
Feedback Current (LTC1147L)
Regulated Output Voltage
Output Voltage Line Regulation
Output Voltage Load Regulation
Burst Mode Output Ripple
Input DC Supply Current (Note 2)
* ADJUSTABLE OUTPUT VERSION
V
I
T
T
C
TH
LTC1147-3.3, LTC1147L-3.3
LTC1147-5
LTC1147-3.3, LTC1147L-3.3
LTC1147-5
LTC1147 Series
LTC1147L Series
IN
JMAX
JMAX
T
–
Normal Mode
Sleep Mode
Sleep Mode (LTC1147-5)
Shutdown
Normal Mode
Sleep Mode
Shutdown (LTC1147L-3.3)
1
2
3
4
= 125 C,
= 125 C,
W
TOP VIEW
JA
JA
8-LEAD PLASTIC SO
= 110 C/W (N)
= 150 C/W (S)
S8 PACKAGE
W W
8
7
6
5
PDRIVE
GND
SHDN
(V
SENSE
FB
U
*)
+
IN
+ 0.3V) to – 0.3V
W
U
CONDITIONS
V
V
I
I
V
5mA < I
5mA < I
I
(Note 5)
4V < V
4V < V
5V < V
V
3.5V < V
3.5V < V
V
LOAD
LOAD
LOAD
IN
IN
IN
SHDN
SHDN
LTC1147CN8-3.3
LTC1147CN8-5
LTC1147CS8-3.3
LTC1147CS8-5
LTC1147IS8-3.3
= 9V
= 9V
= 7V to 12V, I
T
= 700mA
= 700mA
= 0A
IN
IN
IN
A
= 2.1V, 4V < V
= 2.1V, 3.5V < V
LOAD
LOAD
U
IN
IN
= 25 C, V
< 12V
< 12V
< 12V
< 12V
< 12V
< 2A
< 2A
ORDER PART NUMBER
LOAD
Operating Ambient Temperature Range
Extended Commercial
Temperature Range (Note 4) ................. – 40 C to 85 C
Junction Temperature (Note 1)............................ 125 C
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
IN
IN
LTC1147C................................................ 0 C to 70 C
LTC1147I............................................. –40 C to 85 C
= 10V, V
= 50mA
IN
< 12V
< 12V
SHDN
LTC1147LCS8
LTC1147LCS8-3.3
LTC1147LIS8
= 0V, unless otherwise noted.
MIN
1.21
3.23
4.90
– 40
S8 PART MARKING
1.25
3.33
5.05
TYP
160
160
160
0.2
1.6
1.6
40
60
50
10
10
0
11473
11475
1147L
1147L3
1147LI
1147I3
MAX
1.29
3.43
5.20
100
230
230
230
2.1
2.1
40
65
20
20
1
UNITS
mV
mV
mV
mV
mA
mA
P-P
V
A
V
V
A
A
A
A
A