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参数资料
| 型号： | LTC3538EDCB#TRM |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 2 X 3 MM, PLASTIC, DFN-8 |
| 文件页数： | 10/16页 |
| 文件大小： | 197K |
| 代理商： | LTC3538EDCB#TRM |
LTC3538
3
3538f
LOAD CURRENT (mA)
0.1
1
10
100
1000
0.1
1
10
100
1000
EFFICIENCY
(%)
POWER
LOSS
(mW)
100
80
60
40
20
0
90
70
50
30
10
3538 G02
Burst Mode
OPERATION
POWER LOSS
FIXED FREQUENCY
POWER LOSS BURST
FIXED FREQUENCY
LOAD CURRENT (mA)
0.1
1
10
100
1000
EFFICIENCY
(%)
100
80
60
40
20
10
90
70
50
30
3538 G01
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
Burst Mode
OPERATION
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Duty Cycle
FB = 1.2V
●
0%
Frequency Accuracy
●
0.8
1
1.2
MHz
Internal Soft-Start Time
1.5
ms
Error Amp AVOL
80
dB
Error Amp Source Current
VC = 1.5V, FB = OV
–13
μA
Error Amp Sink Current
VC = 1.5V, FB = 1.2V
130
μA
VC Shutdown Threshold (Off)
IC is Disabled
●
0.25
V
VC Output Current in Shutdown
VC = GND
–1
–3
μA
BURST Threshold (High)
●
1.4
V
BURST Threshold (Low)
●
0.4
V
BURST Input Current
VBURST = 3.6V
0.1
1
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 LTC3538 is guaranteed to meet performance specications
from 0°C to 85°C. Specications over –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current Measurements typically are performed when the outputs
are not switching.
Note 4: This IC includes over-temperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when over-temperature protection is active.
Continuous operation above the specied maximum operating junction
temperature may result in device degradation or failure.
Note 5: The IC is tested in a feedback loop to make the measurement.
TYPICAL PERFORMANCE CHARACTERISTICS
Li-Ion to 3.3V Efciency
Efciency and Power Loss vs
Load Current
Switch Pins Before Entering
Boost Mode
ELECTRICAL CHARACTERISTICS The ● denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = VOUT = 3.6V, unless otherwise noted.
TA = 25°C unless otherwise noted
50ns/DIV
SW1
2V/DIV
SW2
2V/DIV
3538 G03
VIN = 2.9V
VOUT = 3.3V AT 500mA
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3538EDCB-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:800mA Synchronous Buck-Boost DC/DC Converter |
| LTC3539 | 制造商:LINER 制造商全称:Linear Technology 功能描述:400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up |
| LTC3539-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up |
| LTC3539EDCB#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, Cut Tape 2A, 1MHz Synchronous Step-Up DC/DC Converter in 2m |
| LTC3539EDCB#TRMPBF | 功能描述:IC REG BOOST SYNC ADJ 2A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
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