lt3493edcb-3 Linear Technology Corporation, lt3493edcb-3 Datasheet - Page 3

• Manufacturer Part Number: lt3493edcb-3
• Description: 1.2a, 750khz Step-down Switching Regulator In 2mm X 3mm Dfn
• Manufacturer: Linear Technology Corporation

Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3493E-3 is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
ELECTRICAL CHARACTERISTICS
The
V
PARAMETER
Switch Current Limit
Switch V
Switch Leakage Current
Minimum Boost Voltage Above Switch
BOOST Pin Current
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Bias Current
TYPICAL PERFOR A CE CHARACTERISTICS
IN
= 12V, V
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
CESAT
BOOST
95
90
85
80
75
70
65
60
55
50
0
= 17V, unless otherwise noted. (Note 2)
Efficiency (V
0.2
LOAD CURRENT (A)
0.4
OUT
W
0.6
= 5V, L = 10µH)
U
0.8
V
V
V
IN
IN
IN
1.0
3493-3 G01
= 8V
= 12V
= 24V
CONDITIONS
(Note 3)
I
V
I
I
V
SW
SW
SW
SHDN
SHDN
1.2
= 1A
= 1A
= 1A
= 2.3V (Note 5)
= 0V
Note 3: Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycle.
Note 4: Current flows out of pin.
Note 5: Current flows into pin.
T
90
85
80
75
70
65
60
55
50
A
0
= 25°C unless otherwise noted.
Efficiency (V
0.2
LOAD CURRENT (A)
0.4
OUT
MIN
1.4
2.3
0.6
= 3.3V, L = 10µH)
0.8
TYP
1.75
1.85
0.01
330
30
6
V
V
V
IN
IN
IN
1.0
= 8V
= 12V
= 24V
3493-3 G02
LT3493-3
A
1.2
MAX
= 25°C.
2.2
2.2
0.3
0.1
50
15
2
UNITS
3493-3f
3
mV
mA
µA
µA
µA
A
V
V
V