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参数资料
| 型号： | LTC3413IFE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 16TSSOP |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.7 V ~ 5.5 V |
| 输入电压： | 2.25 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 3A |
| 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： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-TSSOP-EP |
LTC3413
3A, 2MHz Monolithic
Synchronous Regulator for
DDR/QDR Memory Termination
FEATURES
DESCRIPTION
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High Ef?ciency: Up to 90%
±3A Output Current
Symmetrical Source and Sink Output Current Limit
Low R DS(ON) Internal Switch: 85mΩ
No Schottky Diode Required
2.25V to 5.5V Input Voltage Range
V OUT = V REF /2
±1% Output Voltage Accuracy
Programmable Switching Frequency: Up to 2MHz
Power Good Output Voltage Monitor
Overtemperature Protected
Available in 16-Lead TSSOP Exposed Pad Package
The LTC ? 3413 is a high ef?ciency monolithic synchro-
nous step-down DC/DC converter utilizing a constant
frequency, current mode architecture. It operates from
an input voltage range of 2.25V to 5.5V and provides a
regulated output voltage equal to (0.5)V REF while sourcing
or sinking up to 3A of output current. An internal voltage
divider reduces component count and eliminates the need
for external resistors by dividing the reference voltage in
half. The internal synchronous power switch with 85mΩ
on-resistance increases ef?ciency and eliminates the need
for an external Schottky diode. Switching frequencies up
to 2MHz are set by an external resistor.
APPLICATIONS
Forced-continuous operation in the LTC3413 reduces
noise and RF interference. Fault protection is provided
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Bus Termination: DDR and QDR? Memory,
SSTL, HSTL, ...
Notebook Computers
Distributed Power Systems
by an overcurrent comparator that limits output current
during both sourcing and sinking operations. Adjustable
compensation allows the transient response to be optimized
over a wide range of loads and output capacitors.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 5481178.
TYPICAL APPLICATION
V IN
2.5V
22μF
100
90
V IN = 2.5V
f = 1MHz
4.7M
330pF
5.11k
2200pF
SV IN PV IN
PGOOD
V REF SW
LTC3413
RUN/SS
PGND
SGND
I TH
R T
V FB
L1
0.47μH
C OUT
100μF
2
V OUT
1.25V
±3A
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40
30
20
10
309k
3413 F01a
0
L1: VISHAY DALE IHLP-2525CZ-01 0.47
C OUT : TDK C4532X5R0J107M
0.01
0.1 1
LOAD CURRENT (A)
10
3413 F01b
Figure 1a. High Ef?ciency Bus Termination Supply
Figure 1b. Ef?ciency vs Load Current
3413fc
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