STBP110 STMicroelectronics, STBP110 Datasheet

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... This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. Overvoltage protection device TDFN 8-lead ( 0.75 mm) Applications ■ Smart phones ■ Digital cameras ■ PDA and palmtop devices ■ MP3 players ■ Low-power handheld devices Doc ID 018687 Rev 2 STBP110 Preliminary data 1/28 www.st.com 1 ...

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... Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.1 Calculating the power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.2 Calculating the junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.3 PCB layout recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 10 Tape and reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2/28 Doc ID 018687 Rev 2 STBP110 ...

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... STBP110 11 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 12 Package marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Doc ID 018687 Rev 2 Contents 3/28 ...

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... Table 5. DC and AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 6. Package mechanical dimensions for TDFN 8-lead ( 0.75 mm Table 7. Carrier tape dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table 8. Further tape and reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table 9. Reel dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Table 10. Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Table 11. Marking description Table 12. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4/28 Doc ID 018687 Rev 2 STBP110 ...

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... STBP110 List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2. Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 4. Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 5. Power- Figure 6. Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 7. Disable (EN = high Figure 8. Recovery from OVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 9. Maximum MOSFET current at T and T = 125 ° Figure 10. Package mechanical drawing for TDFN 8-lead ( 0.75 mm Figure 11 ...

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... In addition, the device also monitors its own junction temperature and switches off the internal MOSFET if the junction temperature exceeds the specified limit. The device can be controlled by the microcontroller and can also provide status information about fault conditions. The STBP110 is offered in a small, RoHS-compliant 8-lead TDFN ( mm) package. Figure 1. Logic diagram Figure 2. ...

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... Output voltage (OUT) pin. The OUT pin is connected to the input through a low R N-channel MOSFET switch fault is detected and the STBP110 is enabled by the EN input, this switch is turned on and the output voltage follows the input voltage. The output is disconnected from the input when the input voltage is under the UVLO threshold or above the OVLO threshold, when the chip temperature is above the thermal shutdown threshold or when the chip is disabled by the EN input ...

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... V (max.), the pull-down resistor is internally disconnected to lower the IN EN pin input current in case the external AC adapter is not connected, the application is running from internal battery and the STBP110 device is disabled. To improve safety and to prevent damage to application circuits in the event of extreme voltage or current conditions, an optional protective resistor R ...

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... STBP110 but may be required by the charger IC. 2. The STBP110 MOSFET switch topology allows the current to flow also in a reverse direction, i.e. from OUT to IN, which can be useful for powering external peripherals from the system connector. If the reverse current (supply current) is undesirable, it may be prevented by connecting an external Schottky diode in series with the OUT pin ...

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... Operation 3 Operation The STBP110 provides overvoltage protection for positive input voltage using a built-in low R DS(on) 3.1 Power-up At power-up, with EN = low, the MOSFET switch is turned on after the startup delay, t after the input voltage exceeds the UVLO threshold to ensure the input voltage is stabilized ...

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... STBP110 3.5 Thermal shutdown If the STBP110 internal junction temperature exceeds the T MOSFET switch is turned off and the fault indication output FLT is driven low. To improve thermal stability, this circuit has a 20 °C hysteresis, T Due to the internal reverse diode, the thermal shutdown is not functional for the reverse current ...

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... Timing diagrams 4 Timing diagrams Figure 5. Power- input is low. Figure 6. Overvoltage protection 1. EN input is low. Figure 7. Disable (EN = high) 1. FLT output is in Hi-Z state when EN driven high. 12/28 (1) (1) (1) Doc ID 018687 Rev 2 STBP110 ...

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... STBP110 Figure 8. Recovery from OVP 1. EN input is low. (1) Doc ID 018687 Rev 2 Timing diagrams 13/28 ...

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... Typical operating characteristics 5 Typical operating characteristics Figure 9. Maximum MOSFET current at T performance and T 14/ °C for various PCB thermal A = 125 °C J Doc ID 018687 Rev 2 STBP110 ...

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... STBP110 6 Maximum rating Stressing the device above the rating listed in device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in absolute maximum rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics™ SURE Program and other relevant documents. ...

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... Table 4. Designers should check that the Value Unit 5 - °C -40 to 125 ° (1) Min. Typ. V UVLO 2.5 2.7 2.8 3.0 3.1 3.25 100 5.25 5.375 5.30 5.50 5.71 5.90 5.70 6.02 6.20 6.40 6.60 6.80 7.00 7. 0.5 A 170 140 350 STBP110 V Max. Unit 28 V 2.9 3.2 V 3.4 mV 5.50 5.70 6.10 6.40 V 6.60 7.00 7. 280 mΩ 210 µA 120 800 mV 1 µA 0.4 V ...

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... STBP110 Table 5. DC and AC characteristics (continued) Symbol Description V EN high level input voltage IH(EN) EN internal pull-down R (3) PD(EN) resistor (4) t Startup delay on (5) t Output turn-off time off (5) t Disable time dis Recovery delay from UVLO, t rec OVLO, or thermal shutdown Thermal shutdown threshold T OFF ...

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... Application information 8 Application information 8.1 Calculating the power dissipation The worst-case power dissipation of the STBP110 internal power MOSFET can be calculated using the following formula: Equation LOAD DS(on)(max) where I is the load current and R LOAD resistance. Example ...

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... STBP110 8.3 PCB layout recommendations ● Input capacitor C1 should be located as close as possible to the STBP110 device. It should be a low-ESR ceramic capacitor. Also the protective resistors R (if used) should be located close to the STBP110 (see ● For good thermal performance preferred to couple the STBP110 exposed thermal pads with the PCB ground plane ...

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... 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. Figure 10. Package mechanical drawing for TDFN 8-lead ( 0.75 mm) 20/28 Doc ID 018687 Rev 2 STBP110 ® ...

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... STBP110 Table 6. Package mechanical dimensions for TDFN 8-lead ( 0.75 mm) Symbol REF b D BSC D2 E BSC (2) ddd ( Controlling dimension: millimeters. 2. Lead coplanarity should not exceed 0.08 mm the total number of terminals. Dimensions (mm) Typ. Min. Max. 0.75 0.70 0.80 0.02 0.00 0.05 0.20 — — ...

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... Carrier tape dimensions Tape size W 8 8.00 +0.30 / -0.10 Table 8. Further tape and reel information Package code TDFN 8-lead 8 2.30 ± 0.05 2.30 ± 0.05 1.00 ± 0.05 4.00 ± 0.10 0.250 ± 0.05 22/ 1.50 +0.10 / -0.0 1.75 ± 0 Doc ID 018687 Rev 4.00 ± 0.10 2.00 ± 0.10 3.50 ± 0.05 Bulk P1 T qty. 3000 STBP110 F Reel diameter 7 ...

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... STBP110 Figure 12. Reel dimensions Table 9. Reel dimensions Tape size A max 180 (7 inch) Figure 13. Tape trailer/leader B min min. 1.5 13 ± 0.2 20.2 Doc ID 018687 Rev 2 Tape and reel information N min max 14.4 23/28 ...

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... Tape and reel information Figure 14. Pin 1 orientation 1. Drawings are not to scale. 2. All dimensions are in mm. unless otherwise noted. 24/28 Direction of feed Doc ID 018687 Rev 2 STBP110 AM00442a ...

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... STBP110 11 Part numbering Table 10. Ordering information scheme STBP110 Device type STBP110 Overvoltage threshold A = 5.375 7.20 V Undervoltage threshold 3.25 V Package DJ = TDFN8 0.75 mm Temperature range 6 = -40 °C to +85 °C Shipping method ® ECOPACK package, tape and reel ...

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... Package marking information 12 Package marking information Table 11. Marking description Part number STBP110ATxxxx STBP110BTxxxx STBP110CTxxxx STBP110DTxxxx STBP110ETxxxx STBP110FTxxxx STBP110GTxxxx STBP110AUxxxx STBP110BUxxxx STBP110CUxxxx STBP110DUxxxx STBP110EUxxxx STBP110FUxxxx STBP110GUxxxx STBP110AVxxxx STBP110BVxxxx STBP110CVxxxx STBP110DVxxxx STBP110EVxxxx STBP110FVxxxx STBP110GVxxxx 26/28 Overvoltage threshold (V) Undervoltage threshold (V) Topside marking 5.375 5.50 5.85 6.02 6.40 6.80 7.20 5.375 5.50 5.85 6.02 6.40 6.80 7.20 5.375 5 ...

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... STBP110 13 Revision history Table 12. Document revision history Date 27-Apr-2011 04-May-2011 Revision 1 Initial release. 2 Updated Figure 14. Doc ID 018687 Rev 2 Revision history Changes 27/28 ...

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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 28/28 Please Read Carefully: © 2011 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 018687 Rev 2 STBP110 ...