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LM3686 Datenblatt(PDF) 9 Page - Texas Instruments |
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LM3686 Datenblatt(HTML) 9 Page - Texas Instruments |
9 / 27 page LM3686 www.ti.com SNVS520E – AUGUST 2008 – REVISED MAY 2013 Electrical Characteristics DC-DC Converter (1) (2) (3) (4) Limit Symbol Parameter Conditions Units Min Typ Max VFB_DCDC Feedback Voltage PWM Mode(5) 1.8 1.746 1.836 V Accuracy VREF Internal reference 0.5 V voltage RDSON(P) Pin-Pin Resistance for VBATT = 3.6V 350 450 m Ω PFET ISW = 100 mA RDSON(N) Pin-Pin Resistance for VBATT = 3.6V 150 250 m Ω NFET ISW = 100 mA IQ_AUTO Quiescent current for No load, device is not switching, FB = HIGH 28 40 µA auto mode ILIM Switch peak current Open loop 1.035 1.220 1.375 A limit FOSC Internal Oscillator PWM Mode 2.4 3 3.4 MHz Frequency (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: VBATT = 3.6V and TA = 25°C. (3) The parameters in the electrical characteristic table are tested at VBATT = 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 is given below:VBATT = 2.7V to 5.5V for 1.0V ≤ VOUT_DCDC < 1.8VVBATT = (VOUT_DCDC + 1V) to 5.5V for 1.8V ≤ VOUT_DCDC < 3.6V (5) 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%. Electrical Characteristics Global Parameters (DCDC, LILO, & LDO) (1) (2) (3) (4) Typical Limit Symbol Parameter Conditions Units Min Typ Max Full power mode IOUT_DCDC = IOUT_LILO = IOUT_LDO = 0 mA, DC-DC Quiescent current into IQ_VBATT is not switching (FB_DCDC forced higher than 100 130 µA VBATT VOUT_DCDC) Ven = 1.1V, Shutdown current into VEN_DCDC = VEN_LILO = VEN_LDO = 0V IQ_GLOBAL 2.5 4 µA VBATT Enable Pins (EN_DCDC, EN_LILO, EN_LDO) IEN Enable pin input All EN = 0V .01 1 µA current VIH Logic high input 1.1 V VIL Logic low input 0.40 V (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: VBATT = 3.6V and TA = 25°C. (3) The parameters in the electrical characteristic table are tested at VBATT = 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 is given below:VBATT = 2.7V to 5.5V for 1.0V ≤ VOUT_DCDC < 1.8VVBATT = (VOUT_DCDC + 1V) to 5.5V for 1.8V ≤ VOUT_DCDC < 3.6V Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: LM3686 |
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