Datasheet > LM2612ATL

LM2612ATL

更新时间： 2024-11-22 23:16:47

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器开关
页数	文件大小	规格书
19页	2315K
描述
400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuits

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM2612ATL 数据手册

December 2002

LM2612BL

400mA Sub-miniature, Programmable, Step-Down DC-DC

Converter for Ultra Low-Voltage Circuits

General Description

Key Specifications

n Operates from a single LiION cell (2.8V to 5.5V)

n Internal synchronous rectification for high PWM mode

efficiency

The LM2612 step-down DC-DC converter is optimized for

powering ultra-low voltage circuits from a single Lithium-Ion

cell. It provides up to 400mA (300mA for B grade), over an

input voltage range of 2.8V to 5.5V. Pin programmable out-

put voltages of 1.05V, 1.3V, 1.5V or 1.8V allow adjustment

for MPU voltage options without board redesign or external

feedback resistors.

n Pin programmable output voltage (1.05V, 1.3V, 1.5V and

1.8V)

n 400mA maximum load capability (300mA for B grade)

2% PWM mode DC output voltage precision

The device has three pin-selectable modes for maximizing

battery life in mobile phones and similar portable applica-

tions. Low-noise PWM mode offers 600kHz fixed-frequency

operation to reduce interference in RF and data acquisition

applications during full-power operation. In PWM mode, in-

ternal synchronous rectification provides high efficiency

(91% typ. at 1.8V_OUT). A SYNC input allows synchronizing

the switching frequency in a range of 500kHz to 1MHz to

n 5mV typ PWM mode output voltage ripple

n 160 µA typ PFM mode quiescent current

n 0.02µA typ shutdown mode current

n 600kHz PWM mode switching frequency

n SYNC input for PWM mode frequency synchronization

from 500kHz to 1MHz

avoid noise from intermodulation with system frequencies. Features

Low-current hysteretic PFM mode reduces quiescent current

to 160 µA (typ.) during system standby. Shutdown mode

turns the device off and reduces battery consumption to

0.02µA (typ.). Additional features include soft start and cur-

rent overload protection.

n Sub-miniature 10-pin micro SMD package

n Only three tiny surface-mount external components

required

n Uses small ceramic capacitors

n Internal soft start

n Current overload protection

n No external compensation required

n Thermal shutdown protection

The LM2612 is available in a 10 pin micro SMD packge. This

package uses National’s wafer level chip-scale micro SMD

technology and offers the smallest possible size. Only three

small external surface-mount components, an inductor and

two ceramic capacitors are required.

Applications

n Mobile Phones

n Hand-Held Radios

n Battery Powered Devices

Typical Application Circuit

20041802

DS200418

www.national.com

12 3 4 5 6 7...19

中文翻译

下载PDF

与LM2612ATL相关器件

型号	品牌	获取价格	描述	数据表
LM2612ATLX	NSC	获取价格	400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuit
LM2612ATLX/NOPB	TI	获取价格	IC,SMPS CONTROLLER,CURRENT/VOLTAGE,CMOS,BGA,10PIN,PLASTIC
LM2612BBL	NSC	获取价格	400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuit
LM2612BBL/NOPB	TI	获取价格	IC,SMPS CONTROLLER,CURRENT/VOLTAGE,CMOS,BGA,10PIN,PLASTIC
LM2612BBLX	NSC	获取价格	400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuit
LM2612BBLX/NOPB	TI	获取价格	IC,SMPS CONTROLLER,CURRENT/VOLTAGE,CMOS,BGA,10PIN,PLASTIC
LM2612BBP	NSC	获取价格	400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuit
LM2612BBPX	NSC	获取价格	400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuit
LM2612BL	NSC	获取价格	400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuit
LM2612BTL	NSC	获取价格	400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuit

与LM2612ATL相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

35
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

26
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

54
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

52

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2612ATL

LM2612ATL 数据手册

与LM2612ATL相关器件

与LM2612ATL相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM2612ATL

LM2612ATL 数据手册

与LM2612ATL相关器件

与LM2612ATL相关文章

您还可以找

您在本页遇到什么问题？