전자부품 데이터시트 검색엔진 |
|
LM3670MFX-ADJ 데이터시트(PDF) 1 Page - Texas Instruments |
|
LM3670MFX-ADJ 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 28 page 1 2 5 4 3 VIN SW FB EN GND L1 4.7 or 10 µH VOUT CIN 4.7 µF LM3670 VIN 2.5 V to 5.5 V R1 R2 COUT 10 µF 1 2 5 4 3 VIN SW FB EN GND L1 10 µF VOUT CIN 4.7 µF LM3670 VIN 2.5 V to 5.5 V COUT 10 µF Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LM3670 SNVS250F – NOVEMBER 2004 – REVISED FEBRUARY 2016 LM3670 Miniature Step-Down DC-DC Converter for Ultralow Voltage Circuits 1 1 Features 1 • Input Voltage Range: 2.5 V to 5.5 V • Adjustable Output Voltages (VOUT): 0.7 V to 2.5 V • Fixed Output Voltages: 1.2 V, 1.5 V, 1.6 V, 1.8 V, 1.875 V, 3.3V • 15-µA Typical Quiescent Current • 350-mA Maximum Load Capability • 1-MHz PWM Fixed Switching Frequency (Typical) • Automatic PFM and PWM Mode Switching • Low Dropout Operation – 100% Duty Cycle Mode • Internal Synchronous Rectification for High Efficiency • Internal Soft Start • 0.1-µA Typical Shutdown Current • Current Overload Protection • Operates from a Single Li-Ion Cell or Three-Cell NiMH/NiCd Batteries • Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors) 2 Applications • Mobile Phones and Handheld Devices • PDAs • Palm-Top PCs • Portable Instruments • Battery-Powered Devices 3 Description The LM3670 step-down DC-DC converter is optimized for powering ultralow voltage circuits from a single Li-Ion cell or three-cell NiMH/NiCd batteries. It provides up to 350-mA load current, over an input voltage range from 2.5 V to 5.5 V. There are several different fixed voltage output options available as well as an adjustable output voltage version. The device offers superior features and performance for mobile phones and similar portable applications with complex power management systems. Automatic intelligent switching between pulse width modulation (PWM) low-noise and pulse frequency modulation (PFM) low-current mode offers improved system control. During full-power operation, a fixed-frequency 1-MHz (typical) PWM mode drives loads from approximately 70 mA to 350 mA maximum, with up to 95% efficiency. Hysteretic PFM mode extends the battery life through reduction of the quiescent current to 15 µA (typical) during light current loads and system standby. Internal synchronous rectification provides high efficiency (90% to 95% typical at loads between 1 mA and 100 mA). In shutdown mode (enable (EN) pin pulled low) the device turns off and reduces battery consumption to 0.1 µA (typical). The LM3670 is available in a 5-pin SOT-23 package. A high switching frequency (1 MHz typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM3670 SOT-23 (5) 2.90 mm × 1.60 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. space space Typical Application: Fixed Output Typical Application: Adjustable Output Voltage |
유사한 부품 번호 - LM3670MFX-ADJ |
|
유사한 설명 - LM3670MFX-ADJ |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |