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参数资料
| 型号： | LTC3539EDCB-2#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 2A 8DFN |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.5 V ~ 5.25 V |
| 输入电压： | 0.5 V ~ 5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 2MHz |
| 电流 - 输出： | 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： | 8-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN（3x2） |
LTC3539/LTC3539-2
2A, 1MHz/2MHz
Synchronous Step-Up
DC/DC Converters
Delivers 3.3V at 900mA From 2 Alkaline/NiMH Cells
Delivers 5V at 900mA From a Lithium-Polymer
V IN Start-Up Voltage: 700mV
1.5V to 5.25V V OUT Range
Up to 94% Efficiency
V IN > V OUT Operation
±1.5% Feedback Voltage Tolerance
1MHz (LTC3539) or 2MHz (LTC3539-2) Fixed
Output Disconnect
Selectable Burst Mode ? or PWM Operation
10μA Quiescent Current
Logic Controlled Shutdown: <1μA
Requires Only 6 External Components
Low Profile (2mm × 3mm × 0.75mm) DFN Package
Medical Instruments
Portable Bar Code Scanners
Noise Canceling Headphones
Portable GPS Navigation
Handheld PCs
FEATURES
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Battery
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Frequency Operation
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APPLICATIONS
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TYPICAL APPLICATION
Wide V IN , High Power 3.3V Regulator
DESCRIPTION
The LTC ? 3539/LTC3539-2 are synchronous, 2A step-up
DC/DC converters with output disconnect. Synchronous
rectification enables high efficiency in the low profile
2mm × 3mm DFN package. Battery life is extended with
a 700mV start-up voltage and operation down to 500mV
once started.
A switching frequency of 1MHz (LTC3539) or 2MHz
(LTC3539-2) minimizes solution footprint by allowing the
use of tiny, low profile inductors and ceramic capacitors.
The current mode PWM design is internally compensated,
reducing external parts count. The LTC3539/LTC3539-2
feature a pin-enabled automatic Burst Mode operation at
light load conditions. Anti-ring circuitry reduces EMI by
damping the inductor in discontinuous mode. Additional
features include a low shutdown current of under 1μA and
thermal overload protection.
The LTC3539/LTC3539-2 are offered in a 2mm × 3mm ×
0.75mm DFN package.
L , LT, LTC, LTM and Burst Mode are registered trademarks and ThinSOT is a trademark of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
Efficiency and Power Loss vs Load Current
V IN
1.8V TO 3.6V
2.2μF
V IN
4.7μH
SW
100
90
80
70
EFFICIENCY
1000
100
50 V IN = 3.3V
PWM BURST
LTC3539
MODE V OUT
1M
33pF
V OUT
3.3V
600mA
60
40
V = 2.4V
OUT
POWER LOSS
10
OFF ON
SHDN
GND
FB
PGND
562k
3539 TA01a
22μF
× 2
30
20
10
0
0.1
1
FREQUENCY = 1MHz
FREQUENCY = 2MHz
10 100 1000
1
0.1
I LOAD AVERAGE (mA)
3539 TA01b
35392fb
For more information www.linear.com/3539/3539-2
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3539EDCB-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters |
| LTC3539EDCBTRMPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Up 0.5-5V DFN8EP |
| LTC3539EDCB-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters |
| LTC3541 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Buck + VLDO Regulator |
| LTC3541-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Buck + VLDO Regulator |
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