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LT3506EDHD#PBF

产品描述可输出电流:1.6A 开关工作频率:575kHz 输出类型:Adjustable 输出电压的路数:2 功能类型:Step-Down 输出配置:Positive 双通道单片式 1.6A 降压型开关稳压器
产品类别电源/电源管理    电源电路   
文件大小207KB,共24页
制造商Linear ( ADI )
官网地址http://www.analog.com/cn/index.html
标准
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LT3506EDHD#PBF概述

可输出电流:1.6A 开关工作频率:575kHz 输出类型:Adjustable 输出电压的路数:2 功能类型:Step-Down 输出配置:Positive 双通道单片式 1.6A 降压型开关稳压器

LT3506EDHD#PBF规格参数

参数名称属性值
Brand NameLinear Technology
是否Rohs认证符合
厂商名称Linear ( ADI )
零件包装代码DFN
包装说明HVSON, SOLCC16,.16,20
针数16
制造商包装代码DHD
Reach Compliance Codecompliant
ECCN代码EAR99
模拟集成电路 - 其他类型SWITCHING REGULATOR
控制模式CURRENT-MODE
控制技术PULSE WIDTH MODULATION
最大输入电压25 V
最小输入电压3.6 V
标称输入电压5 V
JESD-30 代码R-PDSO-N16
JESD-609代码e3
长度5 mm
湿度敏感等级1
功能数量2
端子数量16
最高工作温度85 °C
最低工作温度
最大输出电流3.6 A
封装主体材料PLASTIC/EPOXY
封装代码HVSON
封装等效代码SOLCC16,.16,20
封装形状RECTANGULAR
封装形式SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度)260
认证状态Not Qualified
座面最大高度0.8 mm
表面贴装YES
切换器配置BUCK
最大切换频率650 kHz
技术BIPOLAR
温度等级OTHER
端子面层Matte Tin (Sn)
端子形式NO LEAD
端子节距0.5 mm
端子位置DUAL
处于峰值回流温度下的最长时间30
宽度4 mm

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LT3506/LT3506A
Dual Monolithic 1.6A
Step-Down Switching Regulator
FEATURES
n
n
n
DESCRIPTION
The LT
®
3506 is a dual current mode PWM step-down DC/DC
converter with internal 2A power switches. Both convert-
ers are synchronized to a single oscillator and run with
opposite phases, reducing input ripple current. The output
voltages are set with external resistor dividers, and each
regulator has independent shutdown and soft-start circuits.
Each regulator generates a power-good signal when its
output is in regulation, easing power supply sequencing
and interfacing with microcontrollers and DSPs.
The LT3506 switching frequency is 575kHz and the LT3506A
is 1.1MHz. These high switching frequencies allow the
use of tiny inductors and capacitors, resulting in a very
small dual 1.6A output solution. Constant frequency and
ceramic capacitors combine to produce low, predictable
output ripple voltage. With its wide input range of 3.6V to
25V, the LT3506 regulates a wide variety of power sources,
from 4-cell batteries and 5V logic rails to unregulated wall
transformers, lead acid batteries and distributed-power
supplies. Current mode PWM architecture provides fast
transient response with simple compensation components
and cycle-by-cycle current limiting. Frequency foldback
and thermal shutdown provide additional protection.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
n
n
n
n
n
n
Wide Input Voltage Range, 3.6V to 25V
Two 1.6A Output Switching Regulators with Internal
Power Switches
Constant Switching Frequency
LT3506: 575kHz
LT3506A: 1.1MHz
Anti-Phase Switching Reduces Ripple
Accurate 0.8V Reference, ±1%
Independent Shutdown/Soft-Start Pins
Independent Power Good Indicators Ease Supply
Sequencing
Uses Small Inductors and Ceramic Capacitors
Small 16-Lead Thermally Enhanced 5mm
×
4mm
DFN and TSSOP Surface Mount Packages
APPLICATIONS
n
n
n
n
n
n
Disk Drives
DSP Power Supplies
Wall Transformer Regulation
Distributed Power Regulation
DSL Modems
Cable Modems
TYPICAL APPLICATION
V
IN
4.5V TO 25V
22μF
V
IN1
V
IN2
BOOST1
V
OUT1
1.8V
1.6A
4.7μH
18.7k
1000pF
D1
47μF
15k
15k
FB1
V
C1
LT3506
RUN/SS1 RUN/SS2
100k
100k
PGOOD2
PGOOD1
PGOOD2
GND
D1, D2: ON SEMI MBR5230LT3
1.5nF
PGOOD1
1.5nF
3506 TA01a
Efficiency
1/2 BAT-54A
1/2 BAT-54A
90
0.22μF
SW1
SW2
33.2k
FB2
V
C2
10k
2200pF
D2
10.7k
22μF
60
6.4μH
EFFICIENCY (%)
V
OUT2
3.3V
1.6A
100
V
IN
= 5V
V
OUT
= 3.3V
V
OUT
= 1.8V
BOOST2
0.22μF
80
70
50
0
0.5
1.0
I
OUT
(A)
1.5
2.0
3506 TA01b
3506afc
1

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