LM3686TL-AADWEV National Semiconductor, LM3686TL-AADWEV Datasheet
LM3686TL-AADWEV
Specifications of LM3686TL-AADWEV
Related parts for LM3686TL-AADWEV
LM3686TL-AADWEV Summary of contents
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... The LM3686 is available in a 12-bump micro SMD package. A high-switching frequency of 3 MHz (typ.) allows the use of a few tiny surface-mount components. Only six external sur- face-mount components, an inductor and five ceramic capac- itors, are required to establish a 15.66 mm © 2011 National Semiconductor Corporation LM3686 Features DC-DC REGULATOR ■ ...
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Typical Application Circuit www.national.com FIGURE 1. Typical Application 2 30025501 ...
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FIGURE 2. Functional Diagram (Always Connenct VIN_LDO to VBATT) 3 30025502 www.national.com ...
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... Order Information Part Number LM3686TL-AADW LM3686TLX-AADW LM3686TLE-AAED LM3686TLX-AAED LM3686TLE-AAEF LM3686TLX-AAEF *Voltage options are read as follow: 1.81.22.8 = 1.8V for VOUT_DC-DC, 1.2V for VOUT_LILO, and 2.8V for VOUT_LDO; Contact National Semiconductor for other factory VOUT programmed options. www.national.com 12-pin micro SMD package at all times ) BATT connects to output of DCDC or standalone) ...
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Enable Combinations EN_DCDC EN_LILO Note A: The LILO is turned on via a small NMOS device supplied by V NMOS is ON. If higher current > ...
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... Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V pin to GND and QGND BATT Enable pins, Feedback pins, SW pin Junction Temperature (T ) J-MAX Storage Temperature Range Continuous Power Dissipation (Note ...
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Symbol Parameter e N_LILO Output Noise voltage (Note 12) ΔV Dynamic load transient OUT_LILO response ΔV Dynamic line transient IN_LILO response on V BATT Linear Regulator — LDO Symbol Parameter V LDO input voltage range IN_LDO Output voltage ΔV / ...
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DC-DC Converter Symbol Parameter V Feedback Voltage PWM Mode FB_DCDC Accuracy V Internal reference REF voltage R Pin-Pin Resistance for V DSON(P) PFET Pin-Pin Resistance for V DSON(N) NFET Quiescent current for No load, ...
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... Note 3: Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages 130°C (typ.). Note 4: For detailed soldering specifications and information, please refer to National Semiconductor Application Note 1112: Micro SMD Wafer Level Chip Scale Package (AN-1112) Note 5: In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be derated ...
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Typical Performance Characteristics V = 3.6V 25°C, enable pins tied to V BATT A V vs. I OUT_DCDC Efficiency DC-DC vs. Output Current LILO and LDO disabled PSRR vs. Frequency (LDO - VIN_LDO = 3.6V) www.national.com Unless otherwise ...
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Switching Frequency vs. Temperature 30025537 R vs. Temperature DSON 30025539 V Line Transient Response BATT Current Limit vs. Temperature (Open Loop) Startup (all three enables tied together) Line Transient Response 30025525 11 30025538 30025524 30025518 www.national.com ...
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Load Transient Response DC-DC (PWM Mode: 100mA to 350mA) Load Transient Response LILO 50mA to 250mA www.national.com Load Transient Response DC-DC (PFM Mode: 1mA to 150mA) 30025519 Load Transient Response LDO 100mA to 250mA 30025521 12 30025520 30025522 ...
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Operation Description DEVICE INFORMATION The LM3686 incorporates a high efficiency synchronous switching step-down DC-DC converter, a very low dropout linear regulator (LILO), and ultra low noise linear regulator. The DC-DC converter delivers a constant voltage from a sin- gle Li- ...
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Current Limiting A current limit feature allows the LM3686 to protect itself and external components during overload conditions. PWM mode implements current limiting using an internal comparator that trips at 1220mA (typ). If the output is shorted to ground the ...
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Soft Start The DC-DC converter has a soft-start circuit that limits in-rush current during start-up. During start-up the switch current limit is increased in steps. Soft start is activated only if EN_DCDC goes from logic low to logic high after ...
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Application Selection It is strongly recommended to select the required components of LM3686 as described within the datasheet. If other com- ponents are selected, the device will not perform up to stan- dard and electrical characteristics are not guaranteed. Inductor ...
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V input pin and returned to QGND. C IN_LDO An input capacitor is required for stability recommended to use a 1 µF ceramic capacitor and connected between ...
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... Use Use of the micro SMD package requires specialized board layout, precision mounting and careful re-flow techniques, as detailed in National Semiconductor Application Note 1112. Refer to the section "Surface Mount Technology (SMD) As- sembly Considerations". For best results in assembly, align- ment ordinals on the PC board should be used to facilitate placement of the device ...
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Physical Dimensions inches (millimeters) unless otherwise noted 12–Bump (large) micro SMD, 0.5mm Pitch NS Package Number TLA12HTA Physical dimensions are as given 1.692 2.428 0 www.national.com ...
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... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...