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| 型号： | LTC3520EUF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST SYNC ADJ 24QFN |
| 标准包装： | 91 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 2.2 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 100kHz ~ 2MHz |
| 电流 - 输出： | 600mA，1A |
| 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： | 24-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 产品目录页面： | 1334 (CN2011-ZH PDF) |
LTC3520
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
junction temperature range, otherwise speci?cations are at T A = 25°C, V IN = 3.6V, V OUT1 = 3.3V, V OUT2 = 1.8V, R T = 54.9k, unless
otherwise noted.
PARAMETER
Propagation Delay
CONDITIONS
A OUT Falling
MIN
TYP
11
MAX
UNITS
μs
SD3 Input High Voltage
SD3 Input Low Voltage
1.4
0.4
V
V
SD3 Input Current
0.01
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 LTC3520E is guaranteed to meet performance speci?cations
from 0°C to 85°C. Speci?cations over the –40°C to 85°C operating
junction temperature range are assured by design, characterization and
correlation with statistical process controls. The LTC3520I is guaranteed
to meet performance speci?cations over the full –40°C to 125°C operating
junction temperature range.
Note 3: Current measurements are performed when the LTC3520 is not
switching. The current limit values in operation will be somewhat higher
due to the propagation delay of the comparators.
Note 4: The LTC3520 is tested in a proprietary non-switching test mode
that internally connects the FB2 pin to the output of the buck converter
error ampli?er.
Note 5: 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 speci?ed maximum operating junction
temperature may impair device reliability.
TYPICAL PERFORMANCE CHARACTERISTICS (T A = 25°C, unless otherwise speci?ed)
Buck-Boost Ef?ciency
Lithium-Ion to 3.3V
Buck Ef?ciency
Lithium-Ion to 2.7V
PWM MODE
100
90
80
70
60
50
V IN = 4.2V
V IN = 2.7V
PWM MODE
Burst Mode
OPERATION
300
250
200
150
100
90 Burst Mode OPERATION
80
70
60
50
800
700
600
500
400
40
30
20
10
Burst Mode
OPERATION
POWER LOSS
L = COILCRAFT
MSS6132-4.7μH
100
50
40
30
20
10
L = SUMIDA
CDRH3D16NP-4R7N
Burst Mode
OPERATION
POWER LOSS
300
200
100
0
1
10
100
0
1000
0
1
10
100
0
1000
LOAD CURRENT (mA)
3520 G01
LOAD CURRENT (mA)
3520 G02
3520fa
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3520EUF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Synchronous 1A Buck-Boost and 600mA Buck Converters |
| LTC3520IUF#PBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3520IUF#TRPBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3521 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters |
| LTC3521EFE#PBF | 功能描述:IC REG BUCK BST SYNC ADJ 20TSSOP 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:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 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:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
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