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参数资料
| 型号： | LT3493EDCB#TRM |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.2 A SWITCHING REGULATOR, 815 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 2 X 3 MM, PLASTIC, MO-229, DFN-6 |
| 文件页数： | 14/20页 |
| 文件大小： | 588K |
| 代理商： | LT3493EDCB#TRM |
LT3493
3
3493fb
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 specications
from 0°C to 85°C. Specications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3493I specications are
guaranteed over the –40°C to 125°C temperature range.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switch Current Limit
(Note 3)
1.4
1.75
2.2
A
Switch VCESAT
ISW = 1A
330
mV
Switch Leakage Current
2μA
Minimum Boost Voltage Above Switch
ISW = 1A
1.85
2.2
V
BOOST Pin Current
ISW = 1A
30
50
mA
SHDN Input Voltage High
2.3
V
SHDN Input Voltage Low
0.3
V
SHDN Bias Current
VSHDN = 2.3V (Note 5)
VSHDN = 0V
6
0.01
15
0.1
μA
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 12V, VBOOST = 17V, unless otherwise noted. (Note 2)
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 ows out of pin.
Note 5: Current ows into pin.
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C unless otherwise noted.
Efciency (VOUT = 5V, L = 10μH)
LOAD CURRENT (A)
0
50
EFFICIENCY
(%)
55
65
70
75
0.8
1.0
95
3493 G01
60
0.2
0.4
0.6
1.2
80
85
90
VIN = 8V
VIN = 12V
VIN = 24V
LOAD CURRENT (A)
0
50
EFFICIENCY
(%)
55
65
70
75
0.8
1.0
3493 G02
60
0.2
0.4
0.6
1.2
80
85
90
VIN = 8V
VIN = 12V
VIN = 24V
LOAD CURRENT (A)
0
50
EFFICIENCY
(%)
55
65
70
75
0.8
1.0
3493 G03
60
0.2
0.4
0.6
1.2
80
VIN = 5V
VIN = 12V
Efciency (VOUT = 3.3V, L = 10μH)
Efciency (VOUT = 1.8V, L = 4.7μH)
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| LT3493EDCBTRMPBF | 制造商:Linear Technology 功能描述:Sw. Regulator 1.2A 750kHz Step-Down DFN6 |
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| LT3493IDCB#PBF | 制造商:Linear Technology 功能描述:BUCK SW REG 1.4A 750KHZ 6D 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK 750KHZ 制造商:Linear Technology 功能描述:BUCK, SW REG, 1.4A, 750KHZ, 6DFN 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, 750KHZ, 1.2A, DFN-6; Primary Input Voltage:36V; No. of Outputs:1; Output Voltage:780mV; Output Current:1.2A; No. of Pins:6; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:6-DFN;RoHS Compliant: Yes |
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