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参数资料
| 型号： | LTC3443EDE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST SYNC ADJ 12DFN |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.4 V ~ 5.25 V |
| 输入电压： | 2.4 V ~ 5.5 V |
| PWM 型： | Burst Mode? |
| 频率 - 开关： | 600kHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 12-DFN（4x3） |
LTC3443
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V IN = V OUT = 3.6V,unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SHDN/SS Threshold
SHDN/SS Threshold
SHDN/SS Input Current
When IC is Enabled
When EA is at Max Boost Duty Cycle
V SHDN = 5.5V
●
0.4
1
2
0.01
1.4
2.4
1
V
V
μ A
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 LTC3443E is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the –40 ° C to 85 ° C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current measurements are performed when the outputs are not
switching.
Note 4: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125 ° C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may result in device degradation or failure.
TYPICAL PERFOR A CE CHARACTERISTICS
MODE Transient Response:
(T A = 25 ° C unless otherwise specified)
MODE Transient Response:
Burst Mode Operation to Fixed
Fixed Frequency to Burst Mode
100
90
Li-Ion to 3.3V Efficiency
Burst Mode
Frequency
Operation
80
OPERATION
V OUT
V OUT
70
60
50
V IN = 2.7V
V IN = 4.2V
V IN = 3.3V
200mV/DIV
AC-COUPLED
MODE
5V/DIV
100mV/DIV
AC-COUPLED
MODE
5V/DIV
40
V OUT = 3.3V
500 μ s/DIV
3443 G03
V OUT = 3.3V
500 μ s/DIV
3443 G03
30
20
10
0
V IN = 3.3V
I OUT = 30mA
V IN = 3.3V
I OUT = 30mA
0.1
1.0 10 100
1000
OUTPUT CURRENT (mA)
3443 G01
Load Transient Response,
V OUT Ripple at 1A Load
BUCK
V IN = 4.2V
100mA to 1A
V OUT
20mV/DIV
AC-COUPLED
BUCK-BOOST
V IN = 3.3V
BOOST
V IN = 2.7V
V OUT
100mV/DIV
I OUT = 1A
V OUT = 3.3V
2 μ s/DIV
3443 G02
1A
100mA
100 μ s/DIV
3443 G03
3443fa
3
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相关代理商/技术参数 |
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| LTC3444 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Effi ciency, Synchronous, 4-Switch Buck-Boost Controller |
| LTC3444EDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Synchronous Buck-Boost DC/DC Converter for WCDMA Applications |
| LTC3444EDD#PBF | 功能描述:IC DC/DC CONV WCDMA 8-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3444EDD#TRPBF | 功能描述:IC DC/DC CONV WCDMA 8-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3445 | 制造商:LINER 制造商全称:Linear Technology 功能描述:I2C Controllable Buck Regulator with Two LDOs in a 4mm × 4mm QFN |
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