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参数资料
| 型号： | LTC3538EDCB#TRM |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 2 X 3 MM, PLASTIC, DFN-8 |
| 文件页数： | 1/16页 |
| 文件大小： | 197K |
| 代理商： | LTC3538EDCB#TRM |
LTC3538
1
3538f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
The LTC3538 is a highly efcient, low noise, buck-boost
DC/DC converter that operates from input voltages above,
below, and equal to the output voltage. The topology
incorporated in the IC provides a continuous transfer
function through all operating modes, making the product
ideal for single Lithium Ion or multicell Alkaline or NiMH
applications where the output voltage is within the battery
voltage range.
The LTC3538 is suited for use in Micro Hard Disk Drive
(μHDD)applicationswithits800mAcurrentcapability.Burst
Mode operation provides high efciency at light loads.
The LTC3538 includes two 0.17
Ω N-channel and two
0.2
Ω P-channel MOSFET switches. Operating frequency
is internally set to 1MHz to minimize solution footprint
while maximizing efciency.
Other features include <5μA shutdown current, internal
soft-start, short circuit protection and thermal shutdown.
The LTC3538 is available in a low prole (0.75mm), ther-
mally enhanced 8-lead (2mm
× 3mm) DFN package.
Li-Ion/Polymer to 3.3V at 800mA
■
Regulated Output with Input Voltages Above,
Below, or Equal to the Output
■
800mA Continuous Output Current from a Single
Lithium-Ion/Polymer Cell
■
Single Inductor
■
1MHz Fixed Frequency Operation
■
Output Disconnect in Shutdown
■
2.4V to 5.5V Input
■
35μA Quiesecent Current in Burst Mode Operation
■
<5μA Shutdown Current
■
Internal Soft-Start
■
Small, Thermally Enhanced 8-Lead (2mm x 3mm)
DFN package
■
Miniature Hard Disk Drives
■
MP3 Players
■
Digital Cameras
■
Cellular Handsets
■
PDAs, Handheld PC
■
GPS Receivers
, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners. Protected by
U.S. Patents including 5481178, 6304066, 6580258, 6166527, 6404251.
SW1
R2
200k
R1
464k
15k
10k
330pF
33pF
CIN
10
μF
VIN
BURST
SW2
LTC3538
VIN
2.9V TO 4.2V
L1
3.3
μH
GND
VOUT
FB
SD
VC
VOUT
3.3V
800mA
COUT
22
μF
PWM
BURST
3538 TA01
ON OFF
Efciency vs VIN
VIN (V)
2.4
95
85
3.9
4.9
3538 TA01b
2.9
3.4
4.4
5.4
90
80
EFFICIENCY
(%)
100
VOUT = 3.3V
ILOAD = 200mA
800mA Synchronous
Buck-Boost
DC/DC Converter
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3538EDCB-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:800mA Synchronous Buck-Boost DC/DC Converter |
| LTC3539 | 制造商:LINER 制造商全称:Linear Technology 功能描述:400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up |
| LTC3539-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up |
| LTC3539EDCB#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, Cut Tape 2A, 1MHz Synchronous Step-Up DC/DC Converter in 2m |
| LTC3539EDCB#TRMPBF | 功能描述:IC REG BOOST SYNC ADJ 2A 8DFN 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:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
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