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LM21212MHE-2/NOPB

更新时间： 2024-11-24 01:07:35
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德州仪器 - TI 开关光电二极管
页数 文件大小 规格书
31页 1090K
描述
12A High Efficiency Synchronous Buck Regulator with Adjustable Switching Frequency

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LM21212MHE-2/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HTSSOP,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.57
其他特性：ADJUSTABLE MODE FROM 0.6 TO 5.5 VOLT模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：2.95 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G20
JESD-609代码：e4长度：6.5 mm
湿度敏感等级：1功能数量：1
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：12 A最大输出电压：5.5 V
最小输出电压：0.6 V封装主体材料：PLASTIC/EPOXY
封装代码：HTSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
座面最大高度：1.1 mm表面贴装：YES
切换器配置：BUCK最大切换频率：1500 kHz
温度等级：AUTOMOTIVE端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4.4 mmBase Number Matches：1

LM21212MHE-2/NOPB 数据手册

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LM21212-2  
www.ti.com  
SNVS715A –MARCH 2011–REVISED MARCH 2013  
12A High Efficiency Synchronous Buck Regulator with Adjustable Switching Frequency  
Check for Samples: LM21212-2  
1
FEATURES  
DESCRIPTION  
The LM21212-2 is a monolithic synchronous buck  
regulator that is capable of delivering up to 12A of  
continuous output current while producing an output  
voltage down to 0.6V with outstanding efficiency. The  
device is optimized to work over an input voltage  
range of 2.95V to 5.5V, making it suited for a wide  
variety of low voltage systems. The voltage mode  
control loop provides high noise immunity, narrow  
duty cycle capability and can be compensated to be  
stable with any type of output capacitance, providing  
maximum flexibility and ease of use.  
2
•
Integrated 7.0 mΩ High Side and 4.3 mΩ Low  
Side FET Switches  
•
•
300 kHz to 1.55 MHz Resistor-Adjustable  
Frequency  
Adjustable Output Voltage from 0.6V to VIN  
(100% Duty Cycle Capable), ±1% Reference  
•
•
•
•
•
•
•
Input Voltage Range 2.95V to 5.5V  
Startup Into Pre-Biased Loads  
Output Voltage Tracking Capability  
Wide Bandwidth Voltage Loop Error Amplifier  
Adjustable Soft-Start With External Capacitor  
Precision Enable Pin With Hysteresis  
The LM21212-2 features internal over voltage  
protection (OVP) and over-current protection (OCP)  
for increased system reliability. A precision enable pin  
and integrated UVLO allow turn-on of the device to  
be tightly controlled and sequenced. Startup inrush  
currents are limited by both an internally fixed and  
externally adjustable soft-start circuit. Fault detection  
and supply sequencing are possible with the  
integrated power good circuit.  
Integrated OVP, OCP, OTP, UVLO and Power-  
Good  
•
Thermally Enhanced HTSSOP-20 Exposed Pad  
Package  
APPLICATIONS  
The LM21212-2 is designed to work well in multi-rail  
power supply architectures. The output voltage of the  
device can be configured to track an external voltage  
rail using the SS/TRK pin. The switching frequency  
can be programmed between 300 kHz and 1.55 MHz  
with an external resistor.  
•
•
•
Broadband, Networking and Wireless  
Communications  
High-Performance FPGAs, ASICs and  
Microprocessors  
Simple to Design, High Efficiency Point of  
Load Regulation from a 5V or 3.3V Bus  
If the output is pre-biased at startup, it will not sink  
current, allowing the output to smoothly rise past the  
pre-biased voltage. The regulator is offered in a 20-  
pin HTSSOP package with an exposed pad that can  
be soldered to the PCB, eliminating the need for  
bulky heatsinks.  
SIMPLIFIED APPLICATION CIRCUIT  
HTSSOP-20  
L
OUT  
C
5,6,7  
11-16  
V
V
OUT  
PVIN  
AVIN  
SW  
IN  
C
IN  
R
F
OUT  
4
3
C
C3  
R
R
FB1  
C
F
R
C2  
LM21212-2  
19  
18  
FB  
EN  
C
C1  
R
C1  
optional  
FB2  
COMP  
2
1
SS/  
TRK  
optional  
C
C2  
C
SS  
17  
PGOOD  
FADJ  
R
ADJ  
PGND AGND  
8,9,10  
20  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011–2013, Texas Instruments Incorporated  
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LM21212MHE-2/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM21212MHX-2/NOPB TI

类似代替

 12A High Efficiency Synchronous Buck Regulator with Adjustable Switching Frequency
LM21212MH-2/NOPB TI

类似代替

 12A High Efficiency Synchronous Buck Regulator with Adjustable Switching Frequency

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