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LM3880MF-1AA/NOPB PDF预览

LM3880MF-1AA/NOPB

更新时间: 2024-09-30 12:59:15
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
20页 1844K
描述
IC SPECIALTY ANALOG CIRCUIT, PDSO6, ROHS COMPLIANT, SOT-23, 6 PIN, Analog IC:Other

LM3880MF-1AA/NOPB 技术参数

是否Rohs认证: 符合生命周期:Transferred
包装说明:LSSOP, TSOP6,.11,37Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.02模拟集成电路 - 其他类型:ANALOG CIRCUIT
JESD-30 代码:R-PDSO-G6JESD-609代码:e3
长度:2.92 mm湿度敏感等级:1
功能数量:1端子数量:6
最高工作温度:125 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:LSSOP
封装等效代码:TSOP6,.11,37封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
电源:3/5 V认证状态:Not Qualified
座面最大高度:1.22 mm子类别:Power Management Circuits
最大供电电流 (Isup):0.08 mA最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):2.7 V标称供电电压 (Vsup):3.3 V
表面贴装:YES技术:CMOS
温度等级:AUTOMOTIVE端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.95 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:1.6 mmBase Number Matches:1

LM3880MF-1AA/NOPB 数据手册

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December 17, 2008  
LM3686  
Step-Down DC-DC Converter with Integrated Post Linear  
Regulators System and Low-Noise Linear Regulator  
General Description  
Features  
The LM3686 is a step-down DC-DC converter with one inte-  
grated very low dropout linear regulator and a low noise linear  
regulator optimized for powering ultra-low voltage circuits  
from a single Li-Ion cell or 3 cell NiMH/NiCd batteries. It pro-  
vides three outputs with combined load current up to 900 mA  
over an input voltage range from 2.7V to 5.5V.  
DC-DC REGULATOR  
VOUT_DCDC = 1.2V to 2.5V ( in 100 mV steps - factory  
programmed )  
600 mA maximum load capability (LILO = OFF)  
3 MHz PWM fixed switching frequency (typ.)  
The device offers superior features and performance for  
many applications. Automatic intelligent switching between  
PWM low-noise and PFM low-current mode offers improved  
system control. During full-power operation, a fixed-frequency  
3 MHz (typ.), PWM mode drives loads from ~70 mA to 600  
mA max. Hysteretic PFM mode extends the battery life  
through reduction of the quiescent current to 28 μA (typ.) at  
light load and system standby. Internal synchronous rectifi-  
cation provides high efficiency.  
Automatic PFM/PWM mode switching  
Internal synchronous rectification for high efficiency  
Internal soft start  
DUAL RAIL LINEAR REGULATOR: LILO  
Load transients < 50 mV peak typ.  
Line transients < 1 mV peak typ.  
VOUT_LILO = 0.7V to 2.0V ( in 50 mV steps - factory  
programmed )  
Three enable pins allow the separate operation of either the  
DC-DC, post-regulation linear regulator or the linear regulator  
alone. If the DC-DC is not enabled during startup of the post-  
regulation linear regulator, a parallel small pass transistor  
supplies the linear regulator from VBATT with maximal 50 mA.  
In the combined operation where both enables are raised to-  
gether, the small pass transistor is deactivated and the big  
pass transistor provides 350 mA output current. In shutdown  
mode (Enable pins pulled low), the device turns off and re-  
duces battery consumption to 2.5 μA (typ.).  
The LM3686 is available in a 12-bump micro SMD package.  
A high-switching frequency of 3 MHz (typ.) allows the use of  
a few tiny surface-mount components. Only six external sur-  
face-mount components, an inductor and five ceramic capac-  
itors, are required to establish a 15.66 mm2 total solution size.  
70 µA typical IQ from VIN_LILO  
350 mA Maximum Load Capability (Large FET)  
LINEAR REGULATOR: LDO  
Load transients < 80 mV peak typ.  
Line transients < 1 mV peak typ.  
VOUT_LDO = 1.5V to 3.3V ( in 100 mV steps - factory  
programmed )  
50 µA typical IQ  
300 mA Maximum Load Capability  
COMBINED GLOBAL FEATURES  
VBATT VOUT_LILO + 1.5V or 2.7V, whichever is higher  
900 mA maximum combined load capability  
Operates from a single Li-Ion cell or 3 cell NiMH/NiCd  
batteries  
Only six tiny surface-mount external components required  
(one inductor, five ceramic capacitors)  
12–bump micro SMD  
100 µA Iq from VBATT  
15.66 mm2 total solution size  
Applications  
Moblie TV  
Hand-Held Radios  
Personal Digital Assistants  
Palm-top PCs  
Portable Instruments  
Battery-Powered Devices  
Portable Personal Clients  
© 2008 National Semiconductor Corporation  
300255  
www.national.com  

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