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参数资料
| 型号： | LTC3416EFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 4A 20TSSOP |
| 标准包装： | 74 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 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： | 4A |
| 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-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 20-TSSOP-EP |
| 产品目录页面： | 1334 (CN2011-ZH PDF) |
LTC3416
4A, 4MHz, Monolithic
Synchronous Step-Down
Regulator with Tracking
FEATURES
DESCRIPTIO
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■
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■
■
■
■
■
■
■
■
■
High Efficiency: Up to 95%
4A Output Current
Low R DS(ON) Internal Switch: 67m ?
Tracking Input to Provide Easy Supply Sequencing
Programmable Frequency: 300kHz to 4MHz
2.25V to 5.5V Input Voltage Range
± 2% Output Voltage Accuracy
0.8V Reference Allows Low Output Voltage
Low Dropout Operation: 100% Duty Cycle
Power Good Output Voltage Monitor
Overtemperature Protected
Available in a 20-Lead Thermally Enhanced
TSSOP Package
The LTC ? 3416 is a high efficiency 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 from 0.8V to 5V while delivering
up to 4A of output current. The internal synchronous
power switch with 67m ? of on-resistance increases effi-
ciency and eliminates the need for an external Schottky
diode. Switching frequency is set by an external resistor.
100% duty cycle provides low dropout operation extend-
ing battery life in portable systems. OPTI-LOOP ? compen-
sation allows the transient response to be optimized over
a wide range of loads and output capacitors.
The LTC3416 operates in forced continuous operation and
APPLICATIO S
■ Portable Instruments
■ Notebook Computers
■ Distributed Power Systems
■ Battery-Powered Equipment
■ POL Board Power
provides tracking of another power supply rail. Forced
continuous operation reduces noise and RF interference and
provides excellent transient response. Fault protection is
provided by an overcurrent comparator, and adjustable
compensation allows the transient response to be optimized
over a wide range of loads and output capacitors.
, LTC and LT are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. OPTI-LOOP is a registered trade-
mark of Linear Technology Corporation. Protected by U.S. Patents including 5481178,
6580258, 6304066, 6127815, 6498466, 6611131, 6724174.
TYPICAL APPLICATIO
I/O VOLTAGE
V OUT2
2.5V
100
V IN
2.5V TO 5.5V
SVIN
PVIN
22 μ F
90
80
V IN = 2.5V
127k
R T
PGOOD
SW
0.2 μ H
V OUT1
1.8V
70
60
V IN = 3.3V
LTC3416
RUN/SS PGND
100 μ F
× 2
4A
50
40
7.5k
I TH
TRACK
SGND
V FB
30
20
820pF
255k
255k
10
0
V OUT = 1.8V
f = 2MHz
200k
200k
3416 F01a
0.01
0.10 1
LOAD CURRENT (A)
10
3416 G09
Figure 1a. 2.5V/4A Step-Down Regulator with Tracking
Figure 1b. Efficiency vs Load Current
3416fa
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3417 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator |
| LTC3417A | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator |
| LTC3417A-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator with POR |
| LTC3417A-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator |
| LTC3417AEDHC | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator |
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