LM3676SD-ADJEV National Semiconductor, LM3676SD-ADJEV Datasheet
LM3676SD-ADJEV
Specifications of LM3676SD-ADJEV
Related parts for LM3676SD-ADJEV
LM3676SD-ADJEV Summary of contents
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... The LM3676 is available in a 8-lead non-pullback LLP pack- age in leaded (PB) and lead-free (NO PB) versions. A high switching frequency of 2 MHz (typ) allows use of tiny surface- mount components, an inductor and two ceramic capacitors. Typical Application Circuits © 2007 National Semiconductor Corporation Features ■ 16 µA typical quiescent current ■ ...
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Connection Diagram and Package Mark Information Pin Descriptions (8-Lead LLP) Pin # Name 1 PGND MODE SGND 8 VIN www.national.com FIGURE 2. Typical Application Circuit for ADJ version FIGURE 3. ...
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... Ordering Information (8-Lead LLP) Voltage Order Number Option ADJ LM3676SD-ADJ LM3676SDX-ADJ LM3676SD-ADJ LM3676SDX-ADJ 1.5 LM3676SD-1.5 LM3676SDX-1.5 LM3676SD-1.5 LM3676SDX-1.5 1.8 LM3676SD-1.8 LM3676SDX-1.8 LM3676SD-1.8 LM3676SDX-1.8 3.3 LM3676SD-3.3 LM3676SDX-3.3 LM3676SD-3.3 LM3676SDX-3.3 Spec Package Marking NOPB NOPB S008B NOPB NOPB S007B NOPB NOPB S009B NOPB ...
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... Junction Temperature (T ) J-MAX Storage Temperature Range Maximum Lead Temperature (Soldering, 10 sec.) ESD Rating (Note 4) Electrical Characteristics apply over the full operating junction temperature range (−30°C the LM3676SD with V = 3.6V IN Symbol Parameter V Feedback Voltage (Fixed / Adj) (Note 11) FB Line Regulation Load Regulation ...
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Note 10: ADJ version is configured to 1.5V output. Note 11: Test condition: for V less than 2.5V, V OUT Dissipation Rating Table θ JA 56°C/W (4 layer board) 8 Lead non- pullback LLP package = 3.6V; for V greater ...
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Block Diagram www.national.com FIGURE 4. Simplified Functional Diagram 6 20176418 ...
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... Typical Performance Characteristics Circuit of LM3676SD 3.6V 1.5V OUT Quiescent Supply Current vs. Supply Voltage Feedback Bias Current vs. Temp R vs. Temperature DS(ON) = 25°C, unless otherwise noted. A Shutdown Current vs. Temp 20176404 Switching Frequency vs. Temperature 20176440 Open/Closed Loop Current Limit vs. Temperature 20176433 7 20176405 20176447 20176448 ...
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Output Voltage vs. Supply Voltage (V = 1.5V) OUT Output Voltage vs. Output Current (V = 1.5V) OUT Efficiency vs. Output Current (V = 1.5V 2.2 µH) OUT www.national.com Output Voltage vs. Temperature 20176429 Line Transient Response V ...
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Load Transient Response (V = 1.5V) OUT (PFM Mode 0.5mA to 50mA) Mode Change by Load Transients V = 1.5V (PFM to PWM) OUT Mode Change by Mode Pin V = 1.5V (PFM to PWM) OUT Load Transient Response (V ...
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Load Transient Response V = 1.5V (PWM Mode) OUT Start Up into PFM Mode V = 1.5V (Output Current= 1mA) OUT www.national.com Start Up into PWM Mode V = 1.5V (Output Current= 300mA) OUT 20176413 20176419 10 20176424 ...
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Operation Description DEVICE INFORMATION The LM3676, a high efficiency step down DC-DC switching buck converter, delivers a constant voltage from a single Li- Ion battery and input voltage rails from 2.9V to 5.5V to portable devices such as cell phones ...
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FIGURE 6. Typical PFM Operation During PFM operation, the converter positions the output volt- age slightly higher than the nominal output voltage during PWM operation, allowing additional headroom for voltage drop during a load transient from light to heavy load. ...
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SHUTDOWN MODE Setting the EN input pin low (<0.4V) places the LM3676 in shutdown mode. During shutdown the PFET switch, NFET switch, reference, control and bias circuitry of the LM3676 are turned off. Setting EN high (>1.0V) enables normal operation. ...
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INDUCTOR SELECTION There are two main considerations when choosing an induc- tor; the inductor should not saturate, and the inductor current ripple should be small enough to achieve the desired output voltage ripple. Different saturation current rating specifica- tions are ...
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Model DO3314-222MX LPO3310-222MX ELL5GM2R2N CDRH2D14-2R2 OUTPUT CAPACITOR SELECTION A ceramic output capacitor of 10 µF, 6.3V is sufficient for most applications. Use X7R or X5R types; do not use Y5V. DC bias characteristics of ceramic capacitors must be considered when ...
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BOARD LAYOUT CONSIDERATIONS PC board layout is an important part of DC-DC converter de- sign. Poor board layout can disrupt the performance of a DC- DC converter and surrounding circuitry by contributing to EMI, ground bounce, and resistive voltage loss ...
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FIGURE 8. Top layer of board layout for LLP 17 20176464 www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Lead LLP Package NS Package Number SDA08A 18 ...
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Notes 19 www.national.com ...
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