L6926D STMicroelectronics, L6926D Datasheet
L6926D
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L6926D Summary of contents
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High efficiency monolithic synchronous step down regulator Features ■ 5.5 V battery input range ■ High efficiency ■ Internal synchronous switch ■ No external schottky required ■ Extremely low quiescent current ■ 1 ...
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Contents Contents 1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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L6926 1 Pin settings 1.1 Pin connection Figure 1. Pin connection (top view) 1.2 Pin description Table 1. Pin description Pin N° Name 1 RUN 2 COMP 3 VFB 4 GND VCC 7 SYNC 8 PGOOD RUN ...
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Maximum ratings 2 Maximum ratings 2.1 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol V Input voltage 6 V Output switching voltage 5 V Shutdown 1 V Feedback voltage 3 V Error amplifier output voltage 2 V PGOOD 8 ...
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L6926 3 Electrical characteristics Table 4. Electrical characteristcs ( ° 3.6 V unless otherwise specified Symbol Parameter V Operating input voltage cc V Turn on threshold Turn off threshold cc OFF ...
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Electrical characteristics Table 4. Electrical characteristcs (continued ° 3.6 V unless otherwise specified Symbol Parameter Error amplifier characteristics V Voltage feedback fb I Feedback input current fb Run V RUN threshold high run_H ...
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L6926 4 Operation description The main loop uses slope compensated PWM current mode architecture. Each cycle the high side MOSFET is turned on, triggered by the oscillator, so that the current flowing through it (the same as the inductor current) ...
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Operation description 4.1 Modes of operation Depending on the SYNC pin value the device can operate in low consumption or low noise mode. If the SYNC pin is high (higher than 1.3 V) the low consumption mode is selected while ...
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L6926 4.2 Short circuit protection During the device operation, the inductor current increases during the high side turn ON phase and decrease during the high side turn off phase based on the following equations: Equation 1 Equation 2 In strong ...
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Operation description 4.3 Slope compensation In current mode architectures, when the duty cycle of the application is higher than approximately 50%, a pulse-by-pulse instability (the so called sub harmonic oscillation) can occur. To allow loop stability also in these conditions ...
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L6926 5 Additional features and protections 5.1 DROPOUT operation The Li-Ion battery voltage ranges from approximately 3 V and 4.1 V-4.2 V (depending on the anode material). In case the regulated output voltage is from 2.5 V and 3.3 V, ...
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Package mechanical data 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect . The category of second level interconnect is marked on the package ...
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L6926 Figure 4. VFQFPN8 mechanical data and package dimensions DIM. MIN 0.30 ddd mm inch TYP. MAX. MIN. TYP. MAX. 0.90 1.00 0.0315 0.0354 0.0394 ...
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Order codes 7 Order codes Table 5. Order codes Order codes L6926 L6926013TR L6926Q1 L6926Q1TR 14/16 Package MSOP8 MSOP8 Tape and reel VFQFPN8 VFQFPN8 Tape and reel L6926 Packaging Tube Tube ...
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L6926 8 Revision history Table 6. Document revision history Date Revision Jan-2004 Sep-2004 Nov-2004 Sep-2005 Nov-2005 27-Oct-2006 16-Sep-2008 2 First Issue in EDOCS dms. Changed the style look and feel. 3 Add. new package VFSON8. Add. V8 and V7 parameter ...
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