STOD03A STMicroelectronics, STOD03A Datasheet
STOD03A
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STOD03A Summary of contents
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... Dual DC-DC converter for powering AMOLED displays from WIRE Description The STOD03A is a dual DC-DC converter for AMOLED display panels. It integrates a step-up and an inverting DC-DC converter making it particularly suitable for battery operated products, in which the major concern is overall system efficiency. It works in pulse skipping mode during low load conditions and PWM-MODE at 1 ...
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... Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2/23 S features and benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 WIRE S protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 WIRE S basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 WIRE Inductor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Multiple operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Enable pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Soft-start and inrush current limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Undervoltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Fast discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Doc ID 17785 Rev 2 STOD03A ...
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... From - 5 -5.4 V, 200 mA load can be provided with inductor saturation current as a minimum Note: All the above components refer to the typical application performance characteristics. Operation of the device is not limited to the choice of these external components. Inductor values ranging from 2.2 µH to 6.8 µH can be used together with the STOD03A. See Section 7.1.1 for peak inductor current calculation. L ...
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... OSC OSC VINP VINP P2 P2 INVERTING INVERTING CONTROL CONTROL Doc ID 17785 Rev 2 DMD DMD P1B P1B FAST FAST DISCHARGE DISCHARGE DMD DMD N2 N2 S-wire S-wire control control VREF VREF FAST FAST DISCHARGE DISCHARGE STOD03A V V MID MID ...
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... STOD03A 2 Pin configuration Figure 3. Pin configuration (top view) Table 3. Pin description Pin name Pin number PGND MID NC 4 AGND REF S 7 WIRE Exposed pad Description Switching node of the step-up converter Power ground pin Step-up converter output voltage (4 ...
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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 5. Thermal data Symbol R Thermal resistance junction-ambient referred to the FR-4 PCB thJA R Thermal resistance junction-case thJC 6/23 Parameter Parameter Doc ID 17785 Rev 2 STOD03A Value Unit -0 -0 Internally limited A - +0.3 V INP -10 to AGND+0 ...
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... STOD03A 4 Electrical characteristics ° INA L1 = 4.7 µ 4.7 µH, V specified. Table 6. Electrical characteristics Symbol Parameter General Section V V Supply input voltage INA, INP UVLO_H Undervoltage lockout HIGH UVLO_L Undervoltage lockout LOW I_V Input current I I Shutdown current Q_SH V H Enable high threshold ...
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... =100µ 100mA INA,P =2.9V to 3.4V; F=200Hz =50µ load R F MID V =2.9V to 4.5V -200 INA,P V below 10% of nominal O2 -1.2 value Doc ID 17785 Rev 2 STOD03A Typ. Max. Unit ±20 mV ±25 mV ± 0.9 1.1 A Ω 1.0 2.0 Ω 0.4 1.0 -2.4 V -4.9 -4.83 V ±0.5 % +12 mV ±20 mV ± ...
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... STOD03A Table 6. Electrical characteristics (continued) Symbol Parameter Thermal shutdown OTP Overtemperature protection Overtemperature protection OTP HYST hysteresis Discharge resistor R Resistor value DIS T Discharge time DIS Test conditions Min. No load 10% of MID O2 nominal value Doc ID 17785 Rev 2 Electrical characteristics Typ. Max. ...
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... Max power output vs. V 500 500 450 450 400 400 350 350 300 300 250 250 max I max -4.9V = -4.9V OUT OUT O2 O2 200 200 max P max P OUT OUT 150 150 100 100 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4 [V] [ Startup and inrush V IN load STOD03A IN 4.0 4.0 3.5 3.5 3.0 3.0 2.5 2.5 2.0 2.0 1.5 1.5 1.0 1.0 0.5 0.5 0.0 0 ...
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... STOD03A Figure 10. Step-up CCM operation 3 100 mA INA INP MID Figure 12. Line transient MID 2 100 mA, T INA INP MID,O2 Typical performance characteristics Figure 11. Inverting CCM operation °C EN INA INP A Figure 13. Output voltage vs. input voltage I 10 ...
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... S basic operations WIRE ● The negative output voltage levels are selectable within a wide range (steps of 100 mV) ● The device can be enabled / disabled via S 12/23 in combination with the Enable pin. WIRE Doc ID 17785 Rev 2 STOD03A ...
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... STOD03A 6.2 Negative output voltage levels Table 7. Negative output voltage levels Pulse -6.4 2 -6.3 3 -6.2 4 -6.1 5 -6.0 6 -5.9 7 -5.8 8 -5.7 9 -5.6 10 -5.5 1. Default value. Table 8. EN and S operation table WIRE Enable Low Low High High 1. The Enable pin must be set to AGND while using the S Pulse V Pulse ...
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... O2 value output current for both DC-DC converters input voltage for the STOD03A switching frequency. Use the minimum value of 1.2 MHz for the worst case; s η1: efficiency of step-up converter. Typical value is 0.85; η2: efficiency of inverting converter. Typical value is 0.75. ...
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... STOD03A 7.2 Recommended PCB layout The STOD03A is a high frequency power switching device and therefore requires a proper PCB layout in order to obtain the necessary stability and optimize line/load regulation and output voltage ripple. Analog input (V INA at the C pad only. The input capacitor must be as close as possible to the IC. ...
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... Pulse skipping operation: The STOD03A works in pulse skipping mode when the load current is below some tens of mA. The load current level at which this way of operating occurs depends on input voltage only for the step-up converter and on input voltage and negative output voltage (V inverting converter ...
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... When the EN is pulled high, the P1B switch is turned on for 100 µs. In normal operation, during this time, apart from a small drop due to parasitic resistance, V If, after this 100 µs, V pulse is applied to the EN. This mechanism avoids STOD03A starting if a short-circuit is present ...
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... Package mechanical data 9 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 registered trademark. 18/23 Doc ID 17785 Rev 2 STOD03A www.st.com . ...
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... STOD03A Table 9. DFN12L ( mechanical data Dim. Min 0.18 D 2.85 D2 1.87 E 2. 0.30 Figure 16. DFN12L ( drawing mm. Typ. Max. Min. 0.55 0.60 0.020 0.02 0.05 0 0.20 0.25 0.30 0.007 3 3.15 0.112 2.02 2.12 0.074 3 3.15 0.112 1.21 1.31 0.042 0.45 0.40 0.50 0.012 Doc ID 17785 Rev 2 Package mechanical data inch. Typ. Typ. 0.022 0.024 0.001 0.002 0.008 ...
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... Package mechanical data Tape & reel QFNxx/DFNxx (3x3) mechanical data DIM. MIN 12 20/23 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 101 3.898 14.4 3.3 3.3 1 Doc ID 17785 Rev 2 STOD03A inch TYP. MAX. 12.992 0.519 3.976 0.567 0.130 0.130 0.043 0.157 0.315 ...
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... STOD03A Figure 17. DFN12L ( mm) footprint recommended data Doc ID 17785 Rev 2 Package mechanical data 21/23 ...
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... Revision history 10 Revision history Table 10. Document revision history Date Revision 08-Sep-2010 1 06-Dec-2011 2 22/23 Initial release. Updated Section 6 on page 12. Doc ID 17785 Rev 2 Changes STOD03A ...
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... STOD03A 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. ...