전자부품 데이터시트 검색엔진 |
|
LM3218 데이터시트(PDF) 4 Page - Texas Instruments |
|
LM3218 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 21 page LM3218 SNOSB11B – MARCH 2008 – REVISED MARCH 2013 www.ti.com ELECTRICAL CHARACTERISTICS (1) (2) (3) Limits in standard typeface are for TA = TJ = 25°C. Limits in boldface type apply over the full operating ambient temperature range ( −30°C ≤ TA = TJ ≤ +85°C). Unless otherwise noted, all specifications apply to the LM3218 with: PVIN = VDD = EN = 3.6V. Symbol Parameter Conditions Min Typ Max Units VFB, MIN Feedback voltage at minimum VCON = 0.32V VIN = 3.6V (3) 0.75 0.80 0.85 V setting VFB, MAX Feedback voltage at maximum VCON = 1.44V, VIN = 4.2V (3) 3.526 3.600 3.696 V setting ISHDN Shutdown supply current EN = VOUT = VCON = 0V, (4) 0.01 2 µA IQ DC bias current into VDD VCON = 0V, FB = 0V, 0.6 0.7 mA No Switching(5) RDROPOU PinVout - PinVin resistance IOUT = 200mA, VCON = 0.5V 300 400 m Ω T ILIM Large PFET (L) Switch peak VCON = 0.5V (6) (L_PFET current limit 1100 mA ) ILIM Small PFET (S) Switch peak VCON = 0.32V (6) (S_PFET current limit 800 mA ) FOSC Internal oscillator frequency 2.0 MHz VIH,ENABL Logic high input threshold 1.2 V E VIL,ENABL Logic low input threshold 0.5 V E IPIN,ENABL Pin pull down current EN = 3.6V 5 10 µA E VCON,ON VCON Threshold for turning on 0.15 V switches ICON VCON pin leakage current VCON = 1.0V ±1 µA Gain VCON to VOUT Gain 0.32V ≤ VCON ≤ 1.44V 2.5 V/V (1) All voltages are with respect to the potential at the GND pins. The LM3218 is designed for mobile phone applications where turn-on after power-up is controlled by the system controller and where requirements for a small package size overrule increased die size for internal Under Voltage Lock-Out (UVLO) circuitry. Thus, it should be kept in shutdown by holding the EN pin low until the input voltage exceeds 2.7V. (2) Min and Max limits are specified by design, test, or statistical analysis. Typical numbers are not specified, but do represent the most likely norm. Due to the pulsed nature of the testing TA = TJ for the electrical characteristics table. (3) The parameters in the electrical characteristics table are tested under open loop conditions at PVIN = VDD = 3.6V unless otherwise specified. For performance over the input voltage range and closed-loop results, refer to the datasheet curves. (4) Shutdown current includes leakage current of PFET. (5) IQ specified here is when the part is not switching. For operating quiescent current at no load, refer to datasheet curves. (6) Current limit is built-in, fixed, and not adjustable. Electrical Characteristic table reflects open loop data (FB = 0V and current drawn from SW pin ramped up until cycle by cycle limit is activated). Refer to System Characteristics table for maximum output current. 4 Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: LM3218 |
유사한 부품 번호 - LM3218 |
|
유사한 설명 - LM3218 |
|
|
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 |