L6926 STMicroelectronics, L6926 Datasheet
L6926
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L6926 Summary of contents
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... GPS Description The device is DC-DC monolithic regulator specifically designed to provide extremely high efficiency. L6926 supply voltage can be as low allowing its use in single Li-ion cell supplied applications. Output voltage can be selected by an external divider down to 0.6 V. Duty cycle can saturate to 100% allowing low drop-out operation. ...
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... DROPOUT operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.2 PGOOD (Power Good output 5.3 Adjustable output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.4 OVP (overvoltage protection 5.5 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 Low consumption mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Low noise mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Doc ID 9302 Rev 9 L6926 ...
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... L6926 1 Pin settings Figure 2. Pin connection (top view) Table 1. Pin description Pin n° Name 1 RUN 2 COMP 3 VFB 4 GND SYNC 8 PGOOD RUN 1 COMP 2 VFB 3 GND 4 D01IN1239AMOD Shutdown input. When connected to a low level (lower than 0.4 V) the device stops working. When high (higher than 1.3 V) the device is enabled. ...
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... Maximum withstanding voltage range test condition: CDF-AEC-Q100-002- “Human body model” Other pins acceptance criteria: “normal performance’ Table 3. Thermal data Symbol Maximum thermal resistance junction-ambient for MSOP8 R thJA Maximum thermal resistance junction-ambient for VFQFPN8 4/16 Parameter = 70 °C A Parameter Doc ID 9302 Rev 9 L6926 Value Unit - ...
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... L6926 3 Electrical characteristics ° 3.6 V unless otherwise specified Table 4. Electrical characteristics Symbol Parameter V Operating input voltage cc V Turn on threshold Turn off threshold cc OFF V Hysteresis cc hys R High side Ron p R Low side Ron n Peak current limit I lim Valley current limit V Output voltage range ...
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... Specification over the -40 to +125 ° design, characterization and statistical correlation 2. Guaranteed by design 6/16 (1) (continued) Test condition OUT OUT fb Run to GND V = 3.6 V PGOOD OUT fb Doc ID 9302 Rev 9 L6926 Min. Typ. Max. Unit 1 1 OUT 4 %V OUT 0 ...
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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) increases. When this current reaches the threshold (set by the output of the error amplifier E/A), the peak current limit comparator ...
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... Equation 2 In strong overcurrent or short-circuit conditions the V case ΔI increases and Δ – IN OUT ΔI ⋅ ---------------------------------- OUT ΔI ⋅ ------------------ - T = OFF OFF L can be very close to zero. In this OUT decreases. When the inductor peak current reaches the OFF Doc ID 9302 Rev 9 L6926 ...
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... L6926 current limit, the high side MOSFET turns off and so the T minimum value (250 ns typ.) in order to reduce as much as possible ΔI Anyway low enough it can be that the inductor peak current further increases OUT because during the T Due to this reason a second protection that fixes the maximum inductor valley current has been introduced ...
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... FB pin by a resistor divider, when the output voltage goes lower than the FB pin voltage goes lower than 90% of the internal reference value. FB ⎛ ⋅ 0.6 ⎝ OUT Doc ID 9302 Rev 9 pin is internally connected to a comparator R ⎞ ------ - ⎠ L6926 ...
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... L6926 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. Table 5. MSOP8 mechanical data Dim ( ( ccc 1. Dimension “D” and “E1” does not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0 ...
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... Package mechanical data Figure 4. MSOP8 package dimensions 12/16 Doc ID 9302 Rev 9 L6926 7113595_B ...
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... L6926 mm DIM. MIN. TYP. A 0.80 0.90 A1 0.02 A2 0.70 A3 0.20 b 0.18 0.23 D 3.00 D2 2.23 2.38 E 3.00 E2 1.49 1.64 e 0.50 L 0.30 0.40 ddd inch MAX. MIN. TYP. MAX. 1.00 0.0315 0.0354 0.0394 0.05 0.0008 0.0020 0.0276 0.0079 0.30 0.0071 0.0091 0.0118 0.1181 2.48 ...
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... Order codes 7 Order codes Table 6. Order codes Order codes L6926 L6926013TR L6926Q1 L6926Q1TR 14/16 Packages MSOP8 MSOP8 VFQFPN8 VFQFPN8 Doc ID 9302 Rev 9 L6926 Packaging Tube Tape and reel Tube Tape and reel ...
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... L6926 8 Revision history Table 7. Document revision history Date Revision Jan-2004 Sep-2004 Nov-2004 Sep-2005 Nov-2005 27-Oct-2006 16-Sep-2008 11-Apr-2011 2 First Issue in EDOCS. Changed the style look and feel. 3 Add. new package VFSON8. Add. V8 and V7 parameter in the Table 2 - Absolute Maximum Ratings. 4 Update order codes 5 Updated Table ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 16/16 Please Read Carefully: © 2011 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 9302 Rev 9 L6926 ...