STODD01 STMicroelectronics, STODD01 Datasheet
STODD01
Specifications of STODD01
Related parts for STODD01
STODD01 Summary of contents
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... Uses tiny capacitors and inductors ■ Available in QFN16 ( mm.) Description The STODD01 is a complete power management for Blu-Ray, based on high density optical storage devices. It integrates two step-down converters and one step-up. The step-down converters are optimized for powering low-voltage digital core ...
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... Reset function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.5 Overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.6 Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 9 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 9.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 9.2 Programming the output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 9.3 Inductor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 9.4 Input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 9.5 Layout considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 10 Recommended PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 11 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2/31 Doc ID 17789 Rev 2 STODD01 ...
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... STODD01 1 Block diagram Figure 1. STODD01 block diagram IN_A IN_A V V IN_P IN_P Reset Reset TX TX Step-Up 700mA Step-Up 700mA S-Wire S-Wire ch1 ch1 Step-Down Step-Down 800mA 800mA ch2 ch2 Step-Down Step-Down Reset Reset 800mA 800mA ch3 ch3 GND GND ...
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... Thermal data Symbol R Thermal resistance junction-case thJC R Thermal resistance junction-ambient thJA Table 4. ESD Symbol HBM Human body model MM Machine model 4/31 Parameter Parameter Parameter Doc ID 17789 Rev 2 STODD01 Value Unit - 0 0 ...
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... STODD01 3 Pin configuration Figure 2. Pin connection (top through view) Table 5. Pin description Pin n° Symbol 1 GND_P 2 FB1 3 V IN_A 4 FB2 5 GND_P 6 SW2 7 V IN_P 8 SW3 9 GND_P 10 FB3 11 GND_A 12 OUT1 SW1 Reset Exposed pad 1. If this function is not used, the TX pin must be connected to GND ...
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... The components listed above refer to typical applications. Operation of the STODD01 is not limited to the choice of these external components and R2 are calculated according to the following formula 1 recommended to use resistors with values in the range of 1 kΩ kΩ. ...
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... STODD01 5 Electrical characteristics IN_P IN_A µ 4.7 µ 3.3 µH, T 4,5,6 specified; typical values are referred to T Table 7. Electrical characteristics Symbol Parameter V Input voltage range IN I Supply current SUPPLY Step-up section V Output voltage range OUT Prog. feedback voltage range V FB1 Feedback voltage accuracy ...
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... Doc ID 17789 Rev 2 Min. Typ. Max. =100 mA 500 1.3 3.23 3.3 3. 0.784 0.8 0.816 600 700 800 0 5.5 15 1.2 0.032 0. 1.5 0.1 0.1 0.2 0.4 0.3 0 100 and 4.3 4.4 and 4.1 4.2 STODD01 Unit µ µ MHz % V OUT / OUT / µA µ OUT % % ms V ...
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... STODD01 Table 7. Electrical characteristics (continued) Symbol Parameter V Reset output voltage low RL I Reset leakage current RH Thermal section T Thermal shutdown SHDN Thermal shutdown T HYS (2) hysteresis > OVP voltage the device stops to switch. OUT1 2. Guaranteed by design, but not tested in production nominal value ...
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... Symbol t SW_START t SW_STOP t SW_OFF t SW_H t SW_L t SW_R t SW_F t SW_DELAY 4) V SW_TH 4) V SW_TL T T SW_R SW_R Doc ID 17789 Rev 2 STODD01 Min. Typ. Max. 300 500 300 500 270 200 200 20 1 0.4 AM07818v1 AM07818v1 T T SW_F SW_F Unit µs µ ...
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... STODD01 Figure 5. S-wire protocol timing diagrams (case GND GND GND GND S-Wire S-Wire S-Wire S-Wire - - GND GND 0 FB1 FB1 FB1 FB1 GND GND SET BY RESISTOR DIVIDER ...
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... SW_L SW_L SW_H SW_H 9.675V 9.675V t t SW_DELAY SW_DELAY Doc ID 17789 Rev SW_STOP SW_STOP t t SW_OFF SW_OFF 0.83V 0.83V 9.338V 9.338V SW_STOP SW_STOP SW_START SW_START 0.83V 0.83V 0.8V 0.8V 9.338V 9.338V 0.9V 0.9V STODD01 0.8V 0. ...
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... STODD01 Table 9. Feedback one voltage level S-Wire pulses V (V) FB1 0 (Default value) 0.800 1 0.815 2 0.830 3 0.845 4 0.860 5 0.875 6 0.890 7 0.905 8 0.920 9 0.935 10 0.950 Figure 9. Single wire programming S-Wire S-Wire V V =0.8V (default value) =0.8V (default value) FB1 FB1 S-Wire S-Wire V V S-Wire S-Wire ...
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... Detailed description 7.1 Brief overview The STODD01 is a complete high efficiency switching power management. Inside it has a step-up converter with a current capability up to 0.7 A and two step-down converters with a current capability up to 0.8 A. The controller uses an average current mode technique in order to obtain good stability in all application conditions ...
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... TX pin The device implements an S-wire bus communication, which uses one control signal coming from the microprocessor to program the step-up STODD01 output voltage (see S-wire protocol allows the feedback voltage of the step-up section to be changed from 0.8 to 1.25 V, with steps (see Figure 11. S-Wire connection This feature allows complete and easy control of the laser diode power during read and write operation ...
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... As soon as the output capacitor is discharged and the sensed voltage is below 14 re-starts to switch (see Figure 13. OVP function 16/ R_TH R_TH DEL DEL or any V voltage lower than pull-up resistor for reset IN OUT Figure 13). OUTPUT Voltage 15.3V OVP signal No Switching Switching Doc ID 17789 Rev R_TL R_TL 14.8V Switching STODD01 ...
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... STODD01 8 Typical performance characteristics µF, C 1,2,3 4,5,6 Figure 14. Supply current vs. temperature 2 =5V, V <=0.4V, No Switching IN_A IN_P EN 0.5 0 -40 - TEMPERATURE [°C] Figure 16. Feedback voltage vs. temperature 3.32 3.31 3.3 3. 5V, I IN_A IN_P EN 3.27 -40 - TEMPERATURE [°C] Figure 18. OVP vs. temperature 15.5 15.3 15 5V, V 14.7 IN_A ...
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... TEMPERATURE [°C] temperature 6V 6V, IN_A IN_P 1.2V (measured @ 10%) OUT3 OUT3 OUT3_nom - 100 TEMPERATURE [° 50mA IN_A IN_P OUT1 OUT1 - 100 TEMPERATURE [°C] STODD01 120 140 120 140 VEN_H VEN_TH 120 140 ...
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... STODD01 Figure 26. Enable vs. temperature 2 1.8 1.6 1.4 1.2 1 0.8 0 7V, I IN_A IN_P OUT1 0.2 0 -40 - TEMPERATURE [°C] Figure 28. Efficiency step-down vs. output current 100 IN_A IN_P 100 Iout [mA] All efficiencies are relative to one channel, the other channel is at no-load ...
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... Typical performance characteristics Figure 32. Inrush current OUT1 20/31 Figure 33. S-Wire protocol 5V, V from 0 to 5V, IN_A IN_P EN = 9.2V 100mA OUT1 OUT1 V Doc ID 17789 Rev 2 30 PULSES SEQUENCE 5 PULSES SEQUENCE DEFAULT VALUE 5V, V IN_A IN_P EN STODD01 from ...
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... STODD01 9 Application information 9.1 Introduction The following is some technical information for estimating the typical external components characteristics using standard literature equations. Nevertheless strongly recommended to validate the external components suitability to the application requirements, thoroughly testing any solution at bench level on a real evaluation circuit. ...
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... MAX SW × − × MIN OUT OUT OUT × × × MIN OUT continuous mode, for the step-down channel, OUT_RIPPLE Doc ID 17789 Rev 2 ) OUT × MIN × PEAK STODD01 ...
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... STODD01 Equation 7 = Δ × OUT _ RIPPLE L where Δ the ripple current and F L The output voltage ripple (V Equation OUT _ RIPPLE OUT where F is the switching frequency. SW The use of ceramic capacitors with voltage ratings in the range higher than 1.5 times the maximum input or output voltage is recommended ...
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... Recommended PCB layout 10 Recommended PCB layout Figure 34. Component placement Figure 35. Top layer routing 24/31 Doc ID 17789 Rev 2 STODD01 ...
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... STODD01 Figure 36. Bottom layer routing Doc ID 17789 Rev 2 Recommended PCB layout 25/31 ...
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... ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions, and product status, are available at ECOPACK trademark. Table 10. QFN16 ( mm.) mechanical data Dim 26/31 mm. Min. Typ. 0.80 0.90 0.00 0.02 0.20 0.25 0.30 3.90 4.00 2.50 3.90 4.00 2.50 0.65 0.30 0.40 Doc ID 17789 Rev 2 STODD01 www.st.com. Max. 1.00 0.05 0.35 4.10 2.80 4.10 2.80 0.50 ...
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... STODD01 Figure 37. QFN16 ( mm.) drawing Doc ID 17789 Rev 2 Package mechanical data 7571203_A 27/31 ...
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... Package mechanical data Tape & reel QFNxx/DFNxx (4x4) mechanical data Dim. Min 12 28/31 mm. Typ. Max. Min. 330 13.2 0.504 0.795 101 3.898 14.4 4.35 4.35 1 Doc ID 17789 Rev 2 STODD01 inch. Typ. Max. 12.992 0.519 3.976 0.567 0.171 0.171 0.043 0.157 0.315 ...
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... STODD01 Figure 38. QFN16 ( footprint recommended data (dimension in mm.) Doc ID 17789 Rev 2 Package mechanical data 29/31 ...
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... Revision history 12 Revision history Table 11. Document revision history Date Revision 03-Aug-2010 1 28-Feb-2011 2 30/31 First release. Updated QFN16 mechanical data Doc ID 17789 Rev 2 Changes Table 10 on page 26, Figure 37 on page STODD01 27. ...
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... STODD01 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. ...