LTC1574-3.3 LINER [Linear Technology], LTC1574-3.3 Datasheet - Page 2

• Manufacturer Part Number: LTC1574-3.3
• Description: High Efficiency Step-Down DC/DC Converters with Internal Schottky Diode
• Manufacturer: LINER [Linear Technology]

ABSOLUTE
LTC1574
LTC1574-3.3/LTC1574-5
(Voltage Referred to GND Pin)
Input Supply Voltage (Pin 5).................. – 0.3V to 18.5V
Switch Current (Pin 3, 14) ........................................ 1A
Switch Voltage (Pin 3, 14) .......................... V
Operating Temperature Range .................... 0 C to 70 C
Junction Temperature (Note 1) ............................ 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
ELECTRICAL CHARACTERISTICS
2
SYMBOL PARAMETER
I
V
V
I
V
I
I
V
I
R
t
V
V
I
FB
Q
LBIN
LBOUT
PEAK
OFF
IH
FB
OUT
V
LBTRIP
HYST
ON
IH
IL
OUT
Feedback Current into Pin 10
Feedback Voltage
Regulated Output Voltage
Output Voltage Line
Regulation
Output Voltage Load
Regulation
Input DC Supply Current (Note 3)
Low-Battery Trip Point
Current into Pin 12
Current Sunk by Pin 11
Comparator Hysteresis
Current Limit
ON Resistance of Switch
Switch Off Time
Shutdown Pin High
Shutdown Pin Low
Shutdown Pin Input Current
Active Mode
Sleep Mode
Shutdown (Note 4)
W
MAXIMUM
W W
CONDITIONS
LTC1574
LTC1574
LTC1574-3.3
LTC1574-5
V
LTC1574-3.3 (Note 2)
4V < V
4V < V
V
V
V
I
I
V
Minimum Voltage at Pin 7 for Device to Be Active
Maximum Voltage at Pin 7 for Device to Be in Shutdown
V
RATINGS
LTC1574-5 (Note 2)
PGM
PGM
IN
SHUTDOWN
LBOUT
LBOUT
OUT
SHUTDOWN
= 6V to 12V, I
= V
= 0V, V
at Regulated Value
IN
IN
= 0.4V, V
= 5V, V
IN
< 16V, I
< 16V
U
, V
= 0V, 4V < V
= 16V
OUT
IN
OUT
LBIN
– 18.5V
= 0V
PGM
LBIN
= 0V
LOAD
T
A
= 10V
= 25 C, V
= 0V
= 0V
= 100mA, I
IN
20mA < I
20mA < I
20mA < I
20mA < I
< 16V
PACKAGE/ORDER
Consult factory for Industrial and Military grade parts.
IN
PGM
LOAD
LOAD
LOAD
LOAD
= 9V, V
= V
SHDN
< 175mA, I
< 400mA, I
< 175mA, I
< 400mA, I
I
GND
GND
PGM
SW
V
*ADJUSTABLE OUTPUT VERSION
NC
NC
IN
IN
T
SHUTDOWN
JMAX
(Note 2)
1
2
3
4
5
6
7
8
16-LEAD PLASTIC SO
= 125 C,
PGM
PGM
PGM
PGM
S PACKAGE
TOP VIEW
= 0V
= V
= 0V
= V
= V
JA
IN
IN
IN
= 110 C/W
, I
16
15
14
13
12
11
10
9
PGM
NC
GND
SW
GND
LB
LB
V
NC
OUT
= 0V, unless otherwise specified.
IN
OUT
(V
INFORMATION
FB
U
MIN
1.20
3.14
4.75
0.54
0.27
*)
0.5
7.5
1.2
3
LTC1574CS
LTC1574CS-3.3
LTC1574CS-5
1.25
3.30
5.00
1.25
0.60
0.34
TYP
– 45
– 50
450
130
1.0
0.9
ORDER PART
– 5
– 5
15
10
2
4
W
NUMBER
MAX
1.30
3.46
5.25
0.78
0.50
1.55
0.75
– 70
– 70
– 70
– 70
600
180
1.4
0.5
1.5
1.0
70
25
30
1
2
5
UNITS
U
mV
mV
mV
mV
mV
mA
mV
A
V
V
V
A
A
A
V
A
A
A
A
V
V
A
s