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参数资料
| 型号： | LTC3425EUH#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 5A 32QFN |
| 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： | 2.4 V ~ 5.25 V |
| 输入电压： | 0.5 V ~ 4.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 100kHz ~ 2MHz |
| 电流 - 输出： | 5A |
| 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： | 32-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
LTC3425
5A, 8MHz, 4-Phase
Synchronous Step-Up
DC/DC Converter
FEATURES
DESCRIPTIO
s
s
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s
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s
s
s
s
s
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High Efficiency: Up to 95%
Up to 3A Continuous Output Current
4-Phase Operation for Low Output Ripple
and Tiny Solution Size
Output Disconnect and Inrush Current Limiting
Very Low Quiescent Current: 12 μ A
0.5V to 4.5V Input Range
2.4V to 5.25V Adjustable Output Voltage
Adjustable Current Limit
Adjustable, Fixed Frequency Operation from
100kHz to 2MHz per Phase
Synchronizable Oscillator with Sync Output
Internal Synchronous Rectifiers
Manual or Automatic Burst Mode ? Operation
Power Good Comparator
<1 μ A Shutdown Current
Antiringing Control
5mm × 5mm Thermally Enhanced QFN Package
The LTC ? 3425 is a synchronous, 4-phase boost converter
with output disconnect capable of operation below 1V
input. It includes four N-channel MOSFET switches and
four P-channel synchronous rectifiers for an effective
R DS(ON) of 0.045 ? and 0.05 ? , respectively. 4-phase
operation greatly reduces peak inductor currents, and
capacitor ripple current, and increases effective switching
frequency, minimizing inductor and capacitor sizes. True
output disconnect eliminates inrush current and allows
zero load current in shutdown. External Schottky diodes
are not required in most applications (V OUT < 4.3V). Power
saving Burst Mode operation can be user controlled or left
in automatic mode.
Other features include 1 μ A shutdown current, program-
mable frequency with sync in and out, programmable
soft-start, antiringing control, thermal shutdown, adjust-
able current limit, reference output and power good
comparator.
APPLICATIO S
The LTC3425 is available in a small, thermally enhanced
s
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Handheld Computers
Point-of-Load Regulators
3.3V to 5V Conversion
32-pin QFN package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
V IN
2V TO 3V
2.2 μ F
2.7 μ H
2.7 μ H
2.7 μ H
2.7 μ H
100
V IN
SWA
SWB
SWC
SWD
V OUTS
90
OFF ON
SHDN
REFOUT
CCM
REFEN
LTC3425
V OUTA
V OUTB
V OUTC
V OUTD
4.7 μ F
× 4
1M
10k
V OUT
3.3V
2A
80
70
60
50
Burst Mode
OPERATION
FIXED
FREQUENCY
MODE
SYNCIN
40
V IN = 2.4V
V OUT = 3.3V
0.01μF
20k
15k
75k
BURST
R T
I LIM
SGND
GNDA
GNDB
FB
COMP
SS
SYNCOUT
PGOOD
GNDC GNDD
330pF
0.01 μ F
33k
590k
22pF
30
20
10 f = 1MHz/PHASE
L = 2.7 μ H
0
0.1 1 10 100 1000
10000
LOAD CURRENT (mA)
3425 TA01
3425 TA02
C IN : TAIYO YUDEN JMK107BJ225MA
C OUT : TAIYO YUDEN JMK212BJ475MG ( × 4)
L1-L4: TDK RLF5018T-2R7M1R8
3425f
1
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相关代理商/技术参数 |
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| LTC3426 | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.2MHz Step-Up DC/DC Converter in SOT-23 |
| LTC3426ES6 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 1.6V to 4.3V 6-Pin TSOT-23 |
| LTC3426ES6#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 1.6V to 4.3V 6-Pin TSOT-23 |
| LTC3426ES6#TRM | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 1.6V to 4.3V 6-Pin TSOT-23 T/R |
| LTC3426ES6#TRMPBF | 功能描述:IC REG BOOST ADJ 2A TSOT23-6 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色产品:BD91x Series Step-Down Regulators 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:两者兼有 输出数:2 输出电压:3.3V，0.8 V ~ 2.5 V 输入电压:4.5 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:1MHz 电流 - 输出:1.5A 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:20-VFQFN 裸露焊盘 包装:带卷 (TR) 供应商设备封装:VQFN020V4040 产品目录页面:1373 (CN2011-ZH PDF) 其它名称:BD9152MUV-E2TR |
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