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LTC3562EUD#PBF

更新时间： 2024-11-11 21:19:51
品牌 Logo 应用领域
凌特 - Linear 开关
页数 文件大小 规格书
20页 252K
描述
LTC3562 - I<sup>2</sup>C Quad Synchronous Step-Down DC/DC Regulator 2 x 600mA, 2 x 400mA; Package: QFN; Pins: 20; Temperature Range: -40&deg;C to 85&deg;C

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LTC3562EUD#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC20,.11SQ,16
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.73模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE最大输入电压：5.5 V
最小输入电压：2.85 V标称输入电压：3.8 V
JESD-30 代码：S-PQCC-N20JESD-609代码：e3
长度：3 mm湿度敏感等级：1
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：1.5 A封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC20,.11SQ,16
封装形状：SQUARE封装形式：CHIP CARRIER, 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子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：BUCK
最大切换频率：2590 kHz技术：CMOS
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.4 mm
端子位置：QUAD处于峰值回流温度下的最长时间：30
宽度：3 mmBase Number Matches：1

LTC3562EUD#PBF 数据手册

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LTC3562  
2
I C Quad Synchronous  
Step-Down DC/DC Regulator  
2 × 600mA, 2 × 400mA  
DESCRIPTION  
FEATURES  
2
The LTC®3562 is a quad high efficiency monolithic syn-  
n
Four Independent I C Controllable Step-Down  
2
Regulators (2 × 600mA, 2 × 400mA)  
chronous step-down regulator with an I C interface. Two  
2
n
n
n
n
n
Two I C Programmable Feedback Voltage  
regulators are externally adjustable and can have their  
feedback voltages programmed between 425mV and  
800mV in 25mV steps (Type A). The other two regulators  
are fixed output regulators whose output voltages can be  
Regulators (R600A, R400A): V 425mV to 800mV  
FB  
2
Two I C Programmable Output Voltage Regulators  
(R600B, R400B): V  
600mV to 3.775V  
OUT  
®
Programmable Modes: Pulse Skip, LDO, Burst Mode,  
programmed between 600mV and 3.775V in 25mV steps  
Forced Burst Mode Operation  
(Type B). All four regulators operate independently and  
can be put into pulse skip, LDO, Burst Mode operation,  
Quiescent Current < 100μA (All Regulators Enabled  
in LDO Mode)  
2
or forced Burst Mode operation through I C control. The  
Fixed 2.25MHz Switching Frequency (Pulse Skip  
Mode)  
Slew Limiting Reduces Switching Noise  
Power-On Reset Output for Regulator R600A  
Small, Thermally Enhanced, 20-Lead 3mm × 3mm  
QFN Package  
Type-A regulators have separate RUN pins that can be  
2
enabled if I C control is unavailable.  
n
n
n
The 2.85V to 5.5V input voltage range makes the LTC3562  
ideally suited for single Li-Ion battery-powered applica-  
tions. At low output load conditions, the regulators can  
be switched into LDO, Burst Mode operation, or forced  
Burst Mode operation, extending battery life in portable  
systems. The quiescent current drops to under 100μA  
with all regulators in LDO mode, and under 0.1μA when  
all regulators are shut down.  
APPLICATIONS  
n
Miscellaneous Handheld Applications with Multiple  
Supply Rails  
n
Personal Information Appliances  
Switching frequency is internally set to 2.25MHz, allowing  
the use of small surface mount inductors and capacitors.  
All regulators are internally compensated. The LTC3562 is  
available in a low profile 3mm × 3mm QFN package.  
n
Wireless and DSL Modems  
n
Digital Still Cameras  
n
MP3 Players  
n
Portable Instruments  
L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
R600x Burst Mode Efficiency  
High Efficiency Quad Step-Down Converter with I2C  
and Power Loss vs Load Current  
MICROPROCESSOR  
100  
10000  
1000  
100  
10  
V
= 3.3V  
OUT  
SDA  
SCL  
DV  
+
Li-Ion/Polymer  
3.4V TO 4.2V  
90  
10μF  
V
OUT  
2.5V  
=
CC  
V
= 1.2V  
80  
OUT  
POR  
V
IN  
SCL SDA DV  
CC  
V
600A  
100k  
OUT  
1.8V  
70  
V
OUT  
1.8V  
=
V
RUN400A  
SW400A  
OUT  
4.7μH  
475k  
3.3μH  
POR600A  
SW600A  
600mA  
634k  
60  
50  
400A  
1.5V  
LTC3562  
10μF  
10pF  
10pF  
10μF  
400mA  
FB600A  
40  
30  
20  
10  
0
RUN600A  
FB400A  
499k  
V
OUT  
= 3.3V  
V
= 1.2V,  
536k  
OUT  
1.8V, 2.5V  
1
4.7μH  
3.3μH  
V
400B  
1.2V  
V
600B  
OUT  
OUT  
3.3V  
600mA  
V
= 3.8V  
SW400B  
OUT400B PGND AGND OUT600B  
SW600B  
IN  
0.1  
400mA  
10μF  
10μF  
0.01  
0.1  
1
10  
100  
1000  
3562 TA01  
LOAD CURRENT (mA)  
3562 TA01b  
3562fa  
1
1234567...20

中文翻译

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