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参数资料
| 型号： | LTC3539EDCB#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.6 A SWITCHING REGULATOR, 1300 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 2 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, DFN-8 |
| 文件页数： | 1/12页 |
| 文件大小： | 203K |
| 代理商： | LTC3539EDCB#PBF |
LTC3539/LTC3539-2
1
35392fa
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
2A, 1MHz/2MHz
Synchronous Step-Up
DC/DC Converters
The LTC3539/LTC3539-2 are synchronous, 2A step-up
DC/DC converters with output disconnect. Synchronous
rectication enables high efciency in the low prole
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 prole 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.
Wide VIN, High Power 3.3V Regulator
n Delivers 3.3V at 900mA From 2 Alkaline/NiMH Cells
n Delivers 5V at 900mA From a Lithium-Polymer
Battery
n VIN Start-Up Voltage: 700mV
n 1.5V to 5.25V VOUT Range
n Up to 94% Efciency
n VIN > VOUT Operation
n 1MHz (LTC3539) or 2MHz (LTC3539-2) Fixed
Frequency Operation
n Output Disconnect
n Selectable Burst Mode or PWM Operation
n 10μA Quiescent Current
n Logic Controlled Shutdown: <1μA
n Requires Only 6 External Components
n Low Prole (2mm
× 3mm × 0.75mm) DFN Package
n Medical Instruments
n Portable Bar Code Scanners
n Noise Canceling Headphones
n Portable GPS Navigation
n Handheld PCs
L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
ILOAD AVERAGE (mA)
0.1
1
10
100
1000
0.1
1
10
100
1000
EFFICIENCY
(%)
POWER
LOSS
(mW)
100
80
60
40
20
0
90
70
50
30
10
3539 TA01b
POWER LOSS
EFFICIENCY
VIN = 2.4V
VOUT = 3.3V
FREQUENCY = 1MHz
FREQUENCY = 2MHz
Efciency and Power Loss vs
Load Current
3539 TA01a
LTC3539
VIN
SW
2.2μF
VOUT
3.3V
600mA
VIN
1.8V TO 3.6V
4.7μH
VOUT
MODE
SHDN
FB
PGND
GND
562k
1M
22μF
2
33pF
BURST
PWM
ON
OFF
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| LTC3555EUFD#TR | 3 A BATTERY CHARGE CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PQCC28 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| LTC3541-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Buck + VLDO Regulator |
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