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LM3553 Folha de dados(PDF) 4 Page - Texas Instruments |
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LM3553 Folha de dados(HTML) 4 Page - Texas Instruments |
4 / 26 page LM3553 SNVS414B – FEBRUARY 2008 – REVISED MAY 2013 www.ti.com Electrical Characteristics Limits in standard typeface are for TA = +25°C. Limits in boldface type apply over the full operating junction temperature range (-30°C ≤ TJ ≤ +125°C). Unless otherwise noted: VIN = 3.6V, RSET = 16.5kΩ, VD1 = VD2 = 500mV, VFB bit = '0', FEN = '0', TX = '0', Flash Current Level = Full-Scale. (1) (2) (3) Symbol Parameter Conditions Min Typ Max Units Flash Mode 930 1020 1110 VDX = Regulation Voltage Flash LED Current: ILED-SUM mA Flash Mode ID1+ ID2 VDX = Regulation Voltage 1200 RSET = 13.7k Ω ILED-IND Indicator Current Level Indicator Mode 20 mA Output Voltage Regulation in VM = '1', EN1 = EN0 = '0' VMREG 4.65 4.98 5.30 V Voltage Mode No Load VD1,D2 = 0V IQ Quiescent Supply Current 1.0 1.2 mA (Switching) ISD Shutdown Supply Current Device Disabled 3.8 6.0 µA LED Current to Set Current IDx / ISET IDx= 500mA 6770 A / A Ratio VSET ISET Pin Voltage 1.24 V VFB Bit = '0' 450 Current Sink Regulation VD1,D2 mV Voltage VFB Bit = '1' 350 IDx-MATCH Current Sink Matching VDX = Regulation Voltage 2 % RDSON NMOS Switch Resistance 0.25 Ω OCL Bit = '0' 2.2 2.5 2.8 ICL NMOS Switch Current Limit A OCL Bit = '1' 1.53 1.70 1.87 Switch Off, VSW=3.6V, OVP IL-SW SW Pin Leakage Current 10 nA Mode = '0' IL-Dx D1, D2 Pin Leakage VDx = 3.5V 10 nA OVP Mode = '1' 18.00 18.90 19.65 Output Over-Voltage VOVP V Protection Trip Point OVP Mode = '0' 5.4 5.6 5.85 Over-Voltage Protection OVP Mode = '1' 1.6 OVPHyst Hysteresis V OVP Mode = '0' 0.6 OVP to Normal Operation IL-OVP OVP Pin Leakage Current VOVP=3.6V 10 nA fSW Switching Frequency 1.0 1.2 1.35 MHz tFD-MIN Minimum Flash Duration Step tFD-MIN = 16 ÷ fSW 12.8 µsec. DMAX Maximum Duty Cycle 92 % DMIN Minimum Duty Cycle 6 % On 1.0 VIN ThTX,F-EN TX, FEN Pin Threshold V Off 0 0.6 Multi-Function Pin (M/F) Voltage Specifications Input Logic High "1" 0.94 VIN Multi-Function Pin Threshold VM/F V Voltages Input Logic Low "0" 0 0.64 ILOAD = 4.2mA, VOL Output Logic Low "0" 400 mV GPIO Mode I2C Compatible Voltage Specifications (SCL, SDIO, VIO) VIO Serial Bus Voltage Level 1.45 VIN V VIL Input Logic Low "0" VIO = 3.0V 0 0.38 ×VIO V VIH Input Logic High "1" VIO = 3.0V 0.55 × VIO VIO V VOL Output Logic Low "0" ILOAD = 3.7mA 400 mV (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 (Typ) numbers represent the most likely norm. Unless otherwise specified, conditions for Typ specifications are: VIN = 3.6V and TA = 25ºC. (3) All testing for the LM3553 is done open-loop. 4 Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: LM3553 |
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