LT3493EDCB#PBF Linear Technology, LT3493EDCB#PBF Datasheet - Page 3

• Manufacturer Part Number: LT3493EDCB#PBF
• Description: IC, STEP-DOWN PWM DC/DC CONVERTER, DFN-6
• Manufacturer: Linear Technology

Specifications of LT3493EDCB#PBF

• Primary Input Voltage: 36V
• No. Of Outputs: 1
• Output Current: 1.2A
• No. Of Pins: 6
• Operating Temperature Range: -40°C To +85°C
• Supply Voltage Range: 3.6V To 36V
• Switching Frequency Max: 815kHz
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 is guaranteed to meet performance specifi cations
from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3493I specifi cations are
guaranteed over the –40°C to 125°C temperature range.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
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 PERFORMANCE CHARACTERISTICS
95
90
85
80
75
70
65
60
55
50
0
Effi ciency (V
CESAT
0.2
LOAD CURRENT (A)
0.4
OUT
0.6
= 5V, L = 10μH)
0.8
V
V
V
IN
IN
IN
1.0
= 8V
= 12V
= 24V
3493 G01
1.2
CONDITIONS
(Note 3)
I
I
I
V
V
SW
SW
SW
SHDN
SHDN
90
85
80
75
70
65
60
55
50
= 1A
= 1A
= 1A
A
0
Effi ciency (V
= 2.3V (Note 5)
= 0V
= 25°C. V
0.2
The
LOAD CURRENT (A)
l
IN
0.4
denotes the specifi cations which apply over the full operating
OUT
= 12V, V
0.6
= 3.3V, L = 10μH)
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 fl ows out of pin.
Note 5: Current fl ows into pin.
BOOST
0.8
V
V
V
= 17V, unless otherwise noted. (Note 2)
IN
IN
IN
1.0
= 8V
= 12V
= 24V
T
3493 G02
A
= 25°C unless otherwise noted.
1.2
80
75
70
65
60
55
50
0
Effi ciency (V
MIN
1.4
2.3
0.2
LOAD CURRENT (A)
0.4
1.75
1.85
0.01
TYP
330
30
6
OUT
0.6
= 1.8V, L = 4.7μH)
LT3493
MAX
2.2
0.3
0.1
2.2
50
15
2
0.8
V
V
IN
IN
1.0
= 5V
= 12V
UNITS
3493 G03
3493fb
3
mV
mA
μA
μA
μA
1.2
A
V
V
V