参数资料
| 型号： | LT3493IDCB#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1.2A 6DFN |
| 标准包装： | 500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.78 V ~ 34.2 V |
| 输入电压： | 3.6 V ~ 36 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 750kHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 6-DFN-EP（2x3） |
LT3493
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations ar e at T A = 25°C. V IN = 12V, V BOOST = 17V, unless otherwise noted. (Note 2)
PARAMETER
Switch Current Limit
Switch V CESAT
CONDITIONS
(Note 3)
I SW = 1A
MIN
1.4
TYP
1.75
330
MAX
2.2
UNITS
A
mV
Switch Leakage Current
2
μA
Minimum Boost Voltage Above Switch
BOOST Pin Current
I SW = 1A
I SW = 1A
1.85
30
2.2
50
V
mA
SHDN Input Voltage High
SHDN Input Voltage Low
2.3
0.3
V
V
SHDN Bias Current
V SHDN = 2.3V (Note 5)
V SHDN = 0V
6
0.01
15
0.1
μA
μA
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 speci?cations
from 0°C to 85°C. Speci?cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3493I speci?cations are
guaranteed over the –40°C to 125°C temperature range.
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.
95
90
85
80
75
70
65
Ef?ciency (V OUT = 5V, L = 10μH)
90
85
80
75
70
65
Ef?ciency (V OUT = 3.3V, L = 10μH)
80
75
70
65
60
Ef?ciency (V OUT = 1.8V, L = 4.7μH)
60
55
50
V IN = 8V
V IN = 12V
V IN = 24V
60
55
50
V IN = 8V
V IN = 12V
V IN = 24V
55
50
V IN = 5V
V IN = 12V
0
0.2
0.4 0.6
0.8
1.0
1.2
0
0.2
0.4 0.6
0.8
1.0
1.2
0
0.2
0.4 0.6
0.8
1.0
1.2
LOAD CURRENT (A)
3493 G01
LOAD CURRENT (A)
3493 G02
LOAD CURRENT (A)
3493 G03
3493fb
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3493IDCB-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN |
| LT3494 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Low Noise Boost Converters with Output Disconnect |
| LT3494A | 制造商:LINER 制造商全称:Linear Technology 功能描述:20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN |
| LT3494AEDDB | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Low Noise Boost Converters with Output Disconnect |
| LT3494AEDDB#PBF | 制造商:Linear Technology 功能描述:BOOST 2.3 - 16V 0.35A 40V 制造商:Linear Technology 功能描述:BOOST, 2.3 - 16V, 0.35A, 40V, 20QFN |
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