Datasheet > LM3670MF-3.3

LM3670MF-3.3

更新时间： 2024-11-15 02:58:19

品牌	Logo	应用领域
德州仪器 - TI		开关光电二极管
页数	文件大小	规格书
25页	1231K
描述
Miniature Step-Down DC-DC Converter for Ultralow Voltage Circuits

阅读下载

中文翻译

获取价格

数据手册
替代型号

如果您发现信息不准确，欢迎纠错

LM3670MF-3.3 数据手册

LM3670

www.ti.com

SNVS250E –NOVEMBER 2004–REVISED FEBRUARY 2013

LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits

Check for Samples: LM3670

FEATURES

APPLICATIONS

•

V_OUT= Adj (0.7V min), 1.2, 1.5, 1.6, 1.8, 1.875,

2.5, 3.3V

•

Mobile Phones

HandHeld

•

2.5V ≤ V_IN≤ 5.5V

PDAs

15 µA Typical Quiescent Current

350 mA Maximum Load Capability

1 MHz PWM Fixed Switching Frequency (typ.)

Automatic PFM/PWM Mode Switching

Palm-Top PCs

Portable Instruments

Battery Powered Devices

DESCRIPTION

Available in Fixed Output Voltages as well as

an Adjustable Version

The LM3670 step-down DC-DC converter is

optimized for powering ultra-low voltage circuits from

a single Li-Ion cell or 3 cell NiMH/NiCd batteries. It

provides up to 350 mA load current, over an input

voltage range from 2.5V to 5.5V. There are several

different fixed voltage output options available as well

as an adjustable output voltage version.

•

SOT-23-5 Package

Low Drop Out Operation - 100% Duty Cycle

Mode

•

Internal Synchronous Rectification for High

Efficiency

•

Internal Soft Start

The device offers superior features and performance

for mobile phones and similar portable applications

with complex power management systems. Automatic

intelligent switching between PWM low-noise and

PFM low-current mode offers improved system

control. During full-power operation, a fixed-frequency

1 MHz (typ). PWM mode drives loads from ∼70 mA to

350 mA max, with up to 95% efficiency. Hysteretic

PFM mode extends the battery life through reduction

of the quiescent current to 15 µA (typ) during light

current loads and system standby. Internal

synchronous rectification provides high efficiency (90

to 95% typ. at loads between 1 mA and 100 mA). In

shutdown mode (Enable pin pulled low) the device

turns off and reduces battery consumption to 0.1 µA

(typ.).

0.1 µA Typical Shutdown Current

Operates from a Single Li-Ion Cell or 3 Dell

NiMH/NiCd Batteries

•

Only Three Tiny Surface-Mount External

Components Required (One Inductor, Two

Ceramic Capacitors)

Current Overload Protection

Typical Application

V_IN

L1:10uH

2.5V to 5.5V

V_OUT

V_IN

C_OUT

10uF

C_IN

4.7uF

LM3670

GND

Figure 1. Fixed Output Voltage

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.

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.

12 3 4 5 6 7...25

中文翻译

下载PDF

LM3670MF-3.3 替代型号

型号	品牌	替代类型	描述	数据表
LM3670MF-3.3/NOPB	TI	完全替代	用于超低电压电路的微型降压直流/直流转换器 \| DBV \| 5 \| -40 to 85
ADP2108AUJZ-3.3-R7	ADI	功能相似	Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter

与LM3670MF-3.3相关器件

型号	品牌	获取价格	描述	数据表
LM3670MF-3.3/NOPB	TI	获取价格	用于超低电压电路的微型降压直流/直流转换器 \| DBV \| 5 \| -40 to 85
LM3670MF-ADJ	NSC	获取价格	Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3670MF-ADJ	TI	获取价格	Miniature Step-Down DC-DC Converter for Ultralow Voltage Circuits
LM3670MF-ADJ/NOPB	NSC	获取价格	IC 0.75 A SWITCHING REGULATOR, 1300 kHz SWITCHING FREQ-MAX, PDSO5, ROHS COMPLIANT, SOT-23,
LM3670MF-ADJ/NOPB	TI	获取价格	LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3670MFX-1.2	NSC	获取价格	Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3670MFX-1.2	TI	获取价格	Miniature Step-Down DC-DC Converter for Ultralow Voltage Circuits
LM3670MFX-1.2/NOPB	TI	获取价格	用于超低电压电路的微型降压直流/直流转换器 \| DBV \| 5 \| -40 to 85
LM3670MFX-1.5	NSC	获取价格	Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
LM3670MFX-1.5	TI	获取价格	0.75A SWITCHING REGULATOR, 1300kHz SWITCHING FREQ-MAX, PDSO5, SOT-23, 5 PIN

与LM3670MF-3.3相关文章

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

29
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

12
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

14
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

35

产品中心

服务支持

精选活动

关于我们

帮助中心

LM3670MF-3.3

LM3670MF-3.3 数据手册

LM3670MF-3.3 替代型号

与LM3670MF-3.3相关器件

与LM3670MF-3.3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

LM3670MF-3.3

LM3670MF-3.3 数据手册

LM3670MF-3.3 替代型号

与LM3670MF-3.3相关器件

与LM3670MF-3.3相关文章

您还可以找

您在本页遇到什么问题？