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参数资料
| 型号： | LTC3527EUD-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ DL 16QFN |
| 标准包装： | 121 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 1.6 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： | 1.2MHz，2.2MHz |
| 电流 - 输出： | 400mA，800mA |
| 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： | 16-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-QFN（3x3） |
LTC3527/LTC3527-1
Dual 800mA/400mA,
1.2MHz/2.2MHz Synchronous
Step-Up DC/DC Converters
FEATURES
DESCRIPTION
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Dual Synchronous Step-Up DC/DC Converters
Delivers 3.3V at 200mA/100mA from one Alkaline/
NiMH Cell, or 3.3V at 400mA/200mA from Two Cells
V IN Start-Up Voltage: 700mV
0.5V to 5V V IN Range After Start-Up
1.6V to 5.25V V OUT Range
Output Disconnect in Shutdown
V IN > V OUT Operation
1.2MHz or 2.2MHz Operation
Up to 94% Ef?ciency
12μA Quiescent Current in Burst Mode ? Operation
Inrush Current Limiting and Soft-Start
Internal Synchronous Recti?ers
Logic-Controlled Shutdown (< 2μA)
Quick V OUT Discharge (LTC3527-1)
16-Lead, 0.75mm × 3mm × 3mm QFN Package
The LTC ? 3527/LTC3527-1 are dual high ef?ciency, step-up
DC/DC converters in a space saving 16-lead 3mm × 3mm
QFN package. Battery life is maximized with a 700mV start-
up voltage and operation down to 500mV once started.
The SHDN and PGOOD pins enable the converters to be
sequenced or started together.
The LTC3527/LTC3527-1 limit inrush current during start-
up. Selectable 1.2MHz or 2.2MHz operation provides a
choice between the highest ef?ciency or smallest solu-
tion footprint. The current mode PWM design is internally
compensated reducing external parts count. Burst Mode
operation or ?xed frequency operation is selectable via the
MODE pin. Anti-ring circuitry reduces EMI in discontinuous
mode. This device also features thermal shutdown.
True output disconnect allows the output to be completely
APPLICATIONS
open in shutdown. The LTC3527-1 actively discharges
V OUT1 or V OUT2 when its respective SHDN goes low. Qui-
escent current in shutdown is less than 2μA.
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MP3/Personal Media Players
Noise Canceling/Bluetooth Headsets
Wireless Mice
Portable Medical Instruments
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
TYPICAL APPLICATION
Two-Cell Alkaline to 3.3V/1.8V Synchronous Boost Converters
1.2MHz Ef?ciency and Power Loss
+
1.6V to 3.2V
V IN
4.7μF
100
BURST
90 EFFICIENCY
1000
V OUT
3.3V
4.7μH
V IN1
SW1
V OUT1
V IN
V IN2
SW2
V OUT2
4.7μH
V OUT
1.8V
80
70
60
100
10
150mA
4.7μF
1.78M
15pF
LTC3527
15pF
619k
150mA
50
FIXED
OFF
OFF
ON
ON
1M
FB1
PGOOD1
SHDN1
MODE
GND
FB2
PGOOD2
SHDN2
F SEL
1.21M
35271 TA01
4.7μF
FREQUENCY
40
30
POWER
20 LOSS
10
BURST
0
0.01 0.1
1
10
V IN = 2.4V
V OUT1 = 3.3V
100 1000
1
0.1
0.01
LOAD CURRENT (mA)
35271 TA01b
35271fc
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3527EUD-1-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
| LTC3527EUD-1-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
| LTC3527EUD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
| LTC3527EUD-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
| LTC3527EUD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
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