參數(shù)資料
型號(hào)： LTC3527EUD#TR
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 0.8 A DUAL SWITCHING CONTROLLER, 2800 kHz SWITCHING FREQ-MAX, PQCC16
封裝： 3 X 3 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WEED-2, QFN-16
文件頁(yè)數(shù)： 1/22頁(yè)
文件大?。?/td> 359K
代理商： LTC3527EUD#TR
LTC3527/LTC3527-1
1
35271fc
TYPICAL APPLICATION
LOAD CURRENT (mA)
30
EFFICIENCY
(%)
POWER
LOSS
(mW)
90
100
20
10
80
50
70
60
40
0.01
1
100
10
1000
35271 TA01b
0
1000
0.1
100
10
1
0.01
0.1
BURST
EFFICIENCY
FIXED
FREQUENCY
POWER
LOSS
BURST
VIN = 2.4V
VOUT1 = 3.3V
FEATURES
APPLICATIONS
DESCRIPTION
Dual 800mA/400mA,
1.2MHz/2.2MHz Synchronous
Step-Up DC/DC Converters
The LTC3527/LTC3527-1 are dual high efciency, 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 efciency 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
open in shutdown. The LTC3527-1 actively discharges
VOUT1 or VOUT2 when its respective SHDN goes low. Qui-
escent current in shutdown is less than 2μA.
1.2MHz Efciency and Power Loss
n Dual Synchronous Step-Up DC/DC Converters
n Delivers 3.3V at 200mA/100mA from one Alkaline/
NiMH Cell, or 3.3V at 400mA/200mA from Two Cells
n VIN Start-Up Voltage: 700mV
n 0.5V to 5V VIN Range After Start-Up
n 1.6V to 5.25V VOUT Range
n Output Disconnect in Shutdown
n VIN > VOUT Operation
n 1.2MHz or 2.2MHz Operation
n Up to 94% Efciency
n 12μA Quiescent Current in Burst Mode Operation
n Inrush Current Limiting and Soft-Start
n Internal Synchronous Rectiers
n Logic-Controlled Shutdown (< 2μA)
n Quick VOUT Discharge (LTC3527-1)
n 16-Lead, 0.75mm
× 3mm × 3mm QFN Package
n MP3/Personal Media Players
n Noise Canceling/Bluetooth Headsets
n Wireless Mice
n Portable Medical Instruments
Two-Cell Alkaline to 3.3V/1.8V Synchronous Boost Converters
35271 TA01
+
ON
OFF
4.7μF
LTC3527
4.7μH
4.7μF
15pF
1.6V to 3.2V
SW1
VOUT1
VOUT2
VIN1
VIN
VIN2
FB1
PGOOD1
SHDN1
SW2
FB2
PGOOD2
SHDN2
MODE
GND
FSEL
VOUT
3.3V
150mA
VOUT
1.8V
150mA
VIN
1.78M
1M
619k
1.21M
ON
OFF
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.
相關(guān)PDF資料
PDF描述
LTC3527EUD-1#TR 0.8 A DUAL SWITCHING CONTROLLER, 2800 kHz SWITCHING FREQ-MAX, PQCC16
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3527EUD-TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters
LTC3528 制造商:LINER 制造商全稱:Linear Technology 功能描述:400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up
LTC3528-2 制造商:LINER 制造商全稱:Linear Technology 功能描述:1A, 2MHz Synchronous Step-Up DC/DC Converter in 2mm × 3mm DFN
LTC3528B 制造商:LINER 制造商全稱:Linear Technology 功能描述:400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up
LTC3528B-2 制造商:LINER 制造商全稱:Linear Technology 功能描述:400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up
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