EVAL6928D STMicroelectronics, EVAL6928D Datasheet
EVAL6928D
Specifications of EVAL6928D
Available stocks
Related parts for EVAL6928D
EVAL6928D Summary of contents
Page 1
High efficiency monolithic synchronous step down regulator Features ■ 5.5 V battery input range ■ High efficiency 95% ■ Internal synchronous switch ■ No external Schottky required ■ Extremely low quiescent current ■ 1 µA ...
Page 2
Contents Contents 1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
L6928 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 ...
Page 4
Maximum ratings 2 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 V Synchronization mode selector ...
Page 5
L6928 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 ...
Page 6
Electrical characteristics Table 4. Electrical characteristics (continued) Symbol Parameter (2) I RUN input current run SYNC/MODE function V Sync mode threshold high sync_H V Sync mode threshold low sync_L PGOOD section V Power Good Threshold PGOOD ΔV Power Good Hysteresis ...
Page 7
L6928 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) ...
Page 8
Operation description 4.1.1 Low consumption mode In this mode of operation, at light load, the device operates discontinuously based on the COMP pin voltage, in order to keep the efficiency very high also in these conditions. While the device is ...
Page 9
L6928 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 ...
Page 10
Additional features and protections 5 Additional features and protections 5.1 DROPOUT operation The Li-Ion battery voltage ranges from approximately 3 V and 4 4.2 V (depending on the anode material). In case the regulated output voltage is from ...
Page 11
L6928 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. ...
Page 12
Package mechanical data Figure 4. MSOP8 package dimensions 12/16 Doc ID 11051 Rev 6 L6928 7113595_B ...
Page 13
L6928 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 ...
Page 14
Order codes 7 Order codes Table 1. Order codes Order codes L6928D L6928D013TR L6928Q1 L6928Q1TR 14/16 Package MSOP8 MSOP8 VFQFPN8 VFQFPN8 Doc ID 11051 Rev 6 L6928 Packaging Tube Tape and reel Tube Tape and reel ...
Page 15
L6928 8 Revision history Table 6. Document revision history Date Revision Oct-2004 Feb-2005 Nov-2005 27-Oct-2006 22-Aug-2007 11-Apr-2011 1 First Issue. 2 Changed from product preview to final datasheet. Updated Table 5. Electrical characteristics. 3 Added VFQFPN8 package and new part ...
Page 16
... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...