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| 型号： | LT3510EFE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/30页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A DL 20TSSOP |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 23.8 V |
| 输入电压： | 3.1 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 250kHz ~ 1.5MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 20-TSSOP-EP |
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LT3510
Monolithic Dual Tracking
2A Step-Down Switching
Regulator
FEATURES
DESCRIPTION
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Wide Input Range: 3.1V to 25V
Two Switching Regulators with 2A Output Capability
Independent Supply to Each Regulator
Adjustable/Synchronizable Fixed Frequency
Operation from 250kHz to 1.5MHz
Antiphase Switching
Outputs Can be Paralleled
Independent, Sequential, Ratiometric or Absolute
Tracking Between Outputs
Independent Soft-Start and Power Good Pins
Enhanced Short-Circuit Protection
Low Dropout: 95% Maximum Duty Cycle
Low Shutdown Current: <10μA
20-Lead TSSOP Package with Exposed Leadframe
The LT ? 3510 is a dual current mode PWM step-down
DC/DC converter with two internal 2.5A switches. Inde-
pendent input voltage, feedback, soft-start and power
good pins for each channel simplify complex power
supply tracking/sequencing requirements.
Both converters are synchronized to either a common
external clock input or a resistor programmable ?xed
250kHz to 1.5MHz internal oscillator. At all frequencies, a
180° phase relationship between channels is maintained,
reducing voltage ripple and component size. Programmable
frequency allows for optimization between ef?ciency and
external component size.
Minimum input-to-output voltage ratios are improved
by allowing the switch to stay on through multiple clock
APPLICATIONS
cycles, only switching off when the boost capacitor needs
recharging, resulting in ~95% maximum duty cycle.
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DSP Power Supplies
Disc Drives
DSL/Cable Modems
Wall Transformer Regulation
Distributed Power Regulation
PCI Cards
Each output can be independently disabled using its own
soft-start pin, or by using the SHDN pin the entire part can
be placed in a low quiescent current shutdown mode.
The LT3510 is available in a 20-lead TSSOP package with
exposed leadframe for low thermal resistance.
L , LT, LTC, LTM, Linear Technology, Burst Mode 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
3.3V and 1.8V Dual 2A Step-Down Converter with Output Tracking
V IN
12V
4.7μF
Ef?ciency
V IN1
SHDN
V IN2
R T /SYNC
61.9k
100
90
V OUT = 5V
V OUT = 3.3V
4.7μH
0.47μF
BST1
BST2
0.47μF
3.3μH
80
PMEG4005
V OUT1
3.3V
2A
PMEG4005
47μF
24.9k
B360A
SW1
IND1
V OUT1
PG1
LT3510
SW2
IND2
V OUT2
PG2
B360A
10k
100μF
V OUT2
1.8V
2A
70
60
50
40
30
V OUT = 1.8V
V OUT = 2.5V
FB1
FB2
20
V IN = 12V
8.06k
10pF
470pF
40.2k
V C1 V C2
SS/TRACK1 SS/TRACK2
GND
470pF
40.2k
47pF
8.06k
10
0
0
I OUT2 = 0A
FREQUENCY = 500kHz
0.5 1 1.5
LOAD CURRENT (A)
2
0.1μF
3510 TA01a
3510 TA01b
3510fe
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3510FE | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic Dual Tracking 2A Step-Down Switching Regulator |
| LT3510IFE | 制造商:Linear Technology 功能描述:Conv DC-DC Dual Step Down 3.1V to 25V 20-Pin TSSOP EP |
| LT3510IFE#PBF | 功能描述:IC REG BUCK ADJ 2A DL 20TSSOP 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:MIC23xxx HyperLight Load™ Regulators 标准包装:5,000 系列:HyperLight Load® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.8V 输入电压:2.7 V ~ 5.5 V PWM 型:混合物 频率 - 开关:4MHz 电流 - 输出:2A 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:8-VFDFN 裸露焊盘，8-MLF? 包装:带卷 (TR) 供应商设备封装:8-MLF?（2x2） 产品目录页面:1094 (CN2011-ZH PDF) 其它名称:576-3303-2 |
| LT3510IFE#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK 1.5MHZ 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, 1.5MHZ, TSSOP-20 |
| LT3510IFE#TRPBF | 功能描述:IC REG BUCK ADJ 2A DL 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
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