lt3503edcb-trpbf Linear Technology Corporation, lt3503edcb-trpbf Datasheet - Page 3

• Manufacturer Part Number: lt3503edcb-trpbf
• Description: 1a, 2.2mhz 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 LT3503E 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
90
88
86
84
82
80
78
76
74
72
70
= 17V, unless otherwise noted. (Note 2)
0
Efficiency (V
L = 2.5µH
0.2
V
V
IN
IN
LOAD CURRENT (A)
= 12V
0.4
= 8V
W
OUT
0.6
= 3.3V)
U
0.8
1.0
CONDITIONS
(Note 3)
I
V
I
I
V
SW
SW
SW
SHDN
SHDN
3503 G01
= 1A
= 1A
= 1A
1.2
= 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.
90
88
86
84
82
80
78
76
74
72
70
0
Efficiency (V
L = 3.3µH
T
A
= 25°C unless otherwise noted.
0.2
V
LOAD CURRENT (A)
0.4
IN
V
= 12V
OUT
IN
= 16V
0.6
= 5V)
1.45
MIN
2.3
0.8
1.0
TYP
1.75
0.01
400
25
3503 G02
2
6
1.2
A
MAX
= 25°C.
2.2
2.3
0.3
0.1
50
15
2
LT3503
UNITS
3
3503f
mV
mA
µA
µA
µA
A
V
V
V