STBB1XX STMicroelectronics, STBB1XX Datasheet
STBB1XX
Specifications of STBB1XX
Related parts for STBB1XX
STBB1XX Summary of contents
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... PWM mode thus taking benefit either of lower power consumption or best dynamic performance. The device includes also soft-start control, thermal shutdown and current limit. The STBB1 is packaged in DFN10 ( mm). Marking BB1 Doc ID 15474 Rev 5 STBB1XX N-channel and P-channel Output voltage ADJ 1/21 www.st.com 21 ...
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... Programming the output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8.2 Inductor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8.3 Input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 9 Recommended PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 11 Different output voltage versions of the STBB1 available on request 19 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2/21 Soft-start and short-circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Under-voltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Over-temperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Doc ID 15474 Rev 5 STBB1XX ...
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... STBB1XX 1 Block diagram Figure 1. STBB1 block diagram Oscillator Oscillator VINA VINA DEVICE DEVICE MODE/SYNC MODE/SYNC CONTROL CONTROL EN EN SW1 SW1 Control Control Current Current sensor sensor Modulator Modulator Temp. Temp. Control Control GND GND Doc ID 15474 Rev 5 Block diagram ...
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... Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Table 3. Thermal data Symbol R Thermal resistance junction-case thJC R Thermal resistance junction-ambient thJA 4/21 Parameter Parameter Doc ID 15474 Rev 5 STBB1XX Value Unit - 0 150 ° 150 ° ...
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... STBB1XX 3 Pin configuration Figure 2. Pin connections (top through view) Table 4. Pin description Pin n° Symbol 1 VOUT 2 SW2 3 PGND 4 SW1 5 VIN 6 EN MODE 7 (SYNC) 8 VINA 9 GND 10 FB Exposed pad Name and function Output voltage Switch pin - Internal switches are connected to this pin. Connect inductor ...
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... MODE/SYN MODE/SYN GND GND PGND PGND (1) Part number GRM188R60J106ME47D GRM188R60J106ME47D VLCF4020T-2R2N1R7 560 kΩ 3 100 kΩ Doc ID 15474 Rev 5 STBB1XX VOUT VOUT COUT COUT VOUT VOUT COUT COUT Value Size 10 µF 0603 10 µF 0603 2.2 µ 0402 (2) 0402 ...
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... STBB1XX 5 Electrical characteristics INA EN otherwise specified; typical values are referred to T Table 6. Electrical characteristics Symbol Parameter V Input voltage range IN V Under voltage lockout threshold UVLO V Feedback voltage FB V Output voltage range OUT Z FB input impedance FB No switching quiescent current ...
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... Symbol Parameter Efficiency 3 ν Thermal shutdown SHDN T Thermal shutdown hysteresis HYS 8/21 Test conditions mA OUT MODE = OUT mA OUT MODE I = 100 mA OUT MODE Doc ID 15474 Rev 5 STBB1XX Min. Typ. Max 140 20 Unit % °C °C ...
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... STBB1XX 6 Detailed description 6.1 General description The STBB1 is a high efficiency dual mode buck-boost switch mode converter. Thanks to the 4 internal switches, 2 P-channel and 2 N-channel, and its unique control mechanisms it is able to deliver e well-regulated output voltage using a variable input voltage which can be higher than, equal to or lower than the desired output voltage. This solves most of the power supply problems that circuit designers face when dealing with battery powered equipment ...
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... The hysteresis of 100 mV prevents unstable operation when the input voltage is close to the UVLO threshold. 6.5.3 Over-temperature protection An internal temperature sensor continuously monitors the IC junction temperature. If the IC temperature exceeds 140 °C typically the device stops operating. As soon as the temperature falls below 120 °C typically normal operation is restored. 10/21 Doc ID 15474 Rev 5 STBB1XX ...
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... STBB1XX 7 Typical performance characteristics L = 2.2 µ 3.3 V, all measurements done with circuit shown in O components listed in Figure 5. Efficiency vs. I OUT 100 100 Output Current [mA] Output Current [mA] Figure 7. Efficiency vs. V 100 100 90 90 ...
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... O 20 mV/div 20 mV/div AC Coupled AC Coupled Doc ID 15474 Rev 5 STBB1XX TIMEBASE: 1µs/div TIMEBASE: 1µs/div = 100 mA, pulse skipping mode TIMEBASE: 1 µs/div TIMEBASE: 1 µs/div = 50 mA, PWM mode TIMEBASE: 0.2 µs/div TIMEBASE: 0.2 µs/div = 500 mA, PWM mode ...
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... STBB1XX 8 Application information 8.1 Programming the output voltage The STBB1 is available in two versions: fixed output voltage (STBB1PURXX) and adjustable output voltage (STBB1PUR). In the first case the device integrates the resistor divider needed to set the correct output voltage. This allows the saving of 2 external components. The FB pin must be connected directly to V ...
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... The input capacitor must be placed as close as possible to the device. 14/21 × − VOUT ( VIN VOUT η + MAX / ) × × × 2 VIN fs L MAX × × − I VIN ( VOUT + OUT MIN × × × VIN 2 VOUT fs MIN Doc ID 15474 Rev 5 Equation 2 ) VIN ) MIN × L STBB1XX and ...
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... STBB1XX 9 Recommended PCB layout Figure 17. Component placement Figure 18. Top layer routing Figure 19. Bottom layer routing Doc ID 15474 Rev 5 Recommended PCB layout 15/21 ...
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... Package mechanical data 10 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: ECOPACK® trademark. 16/21 Doc ID 15474 Rev 5 STBB1XX www.st.com. ...
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... STBB1XX Dim. Min 0.18 D 2.85 D2 2.20 E 2. 0.30 ddd DFN10 (3x3 mm) mechanical data mm. Typ. Max. 0.90 1.00 0.02 0.05 0.65 0.80 0.20 0.25 0.30 3.00 3.15 3.00 3.15 1.75 0.50 0.40 0.50 0.08 Doc ID 15474 Rev 5 Package mechanical data mils. Min. Typ. 31.5 35.4 0.8 21.7 25.6 7.9 7.1 9.8 112.2 118.1 86.6 112.2 118.1 55.1 19.7 11.8 15.7 7426335F Max. 39.4 2.0 31.5 11.8 124.0 124.0 68.9 19.7 3.1 17/21 ...
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... Package mechanical data Tape & reel QFNxx/DFNxx (3x3) mechanical data Dim. Min 12 18/21 mm. Typ. Max. Min. 180 13.2 0.504 0.795 2.362 14.4 3.3 3.3 1 Doc ID 15474 Rev 5 STBB1XX inch. Typ. Max. 7.087 0.519 0.567 0.130 0.130 0.043 0.157 0.315 ...
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... STBB1XX 11 Different output voltage versions of the STBB1 available on request Table 7. Options available on request Order codes STBB1PUR18 STBB1PUR25 STBB1PUR28 STBB1PUR33 Different output voltage versions of the STBB1 available on request Marking BB1 18 BB1 25 BB1 28 BB1 33 Doc ID 15474 Rev 5 Output voltages 1.8 V 2.5 V 2.8 V 3.3 V 19/21 ...
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... Revision 19-Mar-2009 1 25-Mar-2009 2 01-Apr-2009 3 15-Jul-2009 4 07-Sep-2010 5 20/21 First release. Modified: Figure 5 and Figure 7 on page Modified: Figure 3 and Figure 4 on page Modified: Equation 4 and Equation 5 on page Modified: Table 7 on page 19, Figure 3 Doc ID 15474 Rev 5 Changes 11. 6. 14. and Figure 4 on page 6. STBB1XX ...
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... STBB1XX 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. ...