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LM3671MF-1.375 데이터시트(PDF) 7 Page - Texas Instruments |
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LM3671MF-1.375 데이터시트(HTML) 7 Page - Texas Instruments |
7 / 39 page LM3671 LM3671Q www.ti.com SNVS294P – NOVEMBER 2004 – REVISED MAY 2013 ELECTRICAL CHARACTERISTICS (1) (2) (3) Limits in standard typeface are for TJ = 25°C. Limits in boldface type apply over the entire junction temperature range for operation, −40°C to +125°C. Unless otherwise noted, specifications apply to the LM3671MF/TL/LC with VIN = EN = 3.6V Symbol Parameter Condition Min Typ Max Units VIN Input Voltage (4) 2.7 5.5 V Feedback Voltage (Fixed) MF −4 +4 Feedback Voltage (Fixed) TL PWM mode (5) −2.5 +2.5 % Feedback Voltage (Fixed) LC −4 +4 Feedback Voltage (ADJ) MF −4 +4 (6) PWM mode (5) % VFB Feedback Voltage (ADJ) TL −2.5 +2.5 2.7V ≤ VIN ≤ 5.5V Line Regulation 0.031 %/V IO = 10 mA 100 mA ≤ IO ≤ 600 mA Load Regulation 0.0013 %/mA VIN= 3.6V VREF Internal Reference Voltage 0.5 V ISHDN Shutdown Supply Current EN = 0V 0.01 1 µA No load, device is not switching (FB IQ DC Bias Current into VIN forced higher than programmed 16 35 µA output voltage) RDSON (P) Pin-Pin Resistance for PFET VIN= VGS= 3.6V 380 500 m Ω RDSON (N) Pin-Pin Resistance for NFET VIN= VGS= 3.6V 250 400 m Ω ILIM Switch Peak Current Limit Open Loop (7) 830 1020 1150 mA VIH Logic High Input 1.0 V VIL Logic Low Input 0.4 V IEN Enable (EN) Input Current 0.01 1 µA FOSC Internal Oscillator Frequency PWM Mode (5) 1.6 2 2.6 MHz (1) All voltages are with respect to the potential at the GND pin. (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. (3) The parameters in the electrical characteristic table are tested at VIN= 3.6V unless otherwise specified. For performance over the input voltage range refer to datasheet curves. (4) The input voltage range recommended for ideal applications performance for the specified output voltages are given below:VIN = 2.7V to 4.5V for 1.1V ≤ VOUT < 1.5VVIN = 2.7V to 5.5V for 1.5V ≤ VOUT < 1.8VVIN = (VOUT+ VDROPOUT) to 5.5V for 1.8V ≤ VOUT ≤ 3.3Vwhere VDROPOUT = ILOAD *( RDSON, PFET + RINDUCTOR) (5) Test condition: for VOUT less than 2.5V, VIN = 3.6V; for VOUT greater than or equal to 2.5V, VIN = VOUT+ 1V. (6) ADJ version is configured to 1.5V output. For ADJ output version: VIN = 2.7V to 4.5V for 0.90V ≤ VOUT < 1.1VVIN = 2.7V to 5.5V for 1.1V ≤ VOUT < 3.3V (7) Refer to datasheet curves for closed loop data and its variation with regards to supply voltage and temperature. Electrical Characteristic table reflects open loop data (FB=0V and current drawn from SW pin ramped up until cycle by cycle current limit is activated). Closed loop current limit is the peak inductor current measured in the application circuit by increasing output current until output voltage drops by 10%. DISSIPATION RATING TABLE θJA TA≤ 25°C TA= 60°C TA= 85°C Power Rating Power Rating Power Rating 130°C/W (4 layer board) SOT-23 770 mW 500 mW 310 mW 85°C/W (4 layer board) 5-bump 1179 mW 765 mW 470 mW DSBGA 165°C/W (4 layer board) 6-pin 606 mW 394 mW 242 mW USON Copyright © 2004–2013, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LM3671 LM3671Q |
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