STOD13AS STMicroelectronics, STOD13AS Datasheet
STOD13AS
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STOD13AS Summary of contents
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... AMOLED displays from WIRE ■ Multimedia players Description The STOD13AS 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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... WIRE S basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 WIRE and WIRE Inductor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Multiple operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Pulse skipping operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Discontinuous conduction mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Continuous conduction mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Enable pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Soft-start and inrush current limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Undervoltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Doc ID 022733 Rev 1 STOD13AS ...
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... STOD13AS 8.1.9 8.1.10 8.1.11 8.1.12 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Short-circuit protection during soft-start (SSD Overload protection (OLP Short-circuit protection (SCP Fast discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Doc ID 022733 Rev 1 Contents 3/25 ...
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... At -6 250 mA load can be provided with inductor saturation current as a minimum of 1.5 A. See 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 3.3 µH to 6.8 µH can be used together with the STOD13AS. 4/25 LX1 VINP ...
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... STOD13AS Figure 2. Block schematic V INP V INA UVLO EN LOGIC CONTROL S WIRE V REF AGND PGND LX CURRENT SENSE RING s KILLER STEP-UP CONTROL OTP S-WIRE OSC VREF VINP SSD SCP OLP INVERTING CONTROL VO2 L X2 Doc ID 022733 Rev 1 DMD P1A s s P1B FAST DISCHARGE ...
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... Enable control pin. High = converter on; Low = converter in shutdown 8 mode 9 Inverting converter output voltage 10 Inverting converter switching node 11 Analogic input supply voltage 12 Power input supply voltage Internally connected to AGND. Exposed pad must be connected to ground layers in the PCB layout in order to guarantee proper operation of the device Doc ID 022733 Rev 1 STOD13AS Description ...
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... STOD13AS 3 Maximum ratings Table 4. Absolute maximum ratings Symbol supply voltage INA INP EN, S Logic input pins WIRE FD Logic input pin IL Inverting converter switching current X2 L Inverting converter switching node voltage X2 V Inverting converter output voltage O2 V Step-up converter and LDO output voltage ...
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... MID load T = -40°C to +85°C J Doc ID 022733 Rev µ µF, IN MID = 4 -4.9 V unless EN MID O2 Min. Typ. Max. 2.5 3.7 4.5 2.22 2.25 1.9 2.18 1.7 2.1 1.2 0.4 1.2 0.4 1.35 1.5 1. 1.208 1.220 1.232 100 4.6 no -0.8 0.8 O2 STOD13AS Unit µ µ µA MHz % % % V µ ...
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... STOD13AS Table 6. Electrical characteristics (continued) Symbol Parameter Δ V Line transient MID LT Δ V Load transient response MID T Undershoot/overshoot TDMA Noise Static variation between low and high V level IN I Maximum output current MID MAX I-L Step-up inductor peak current 1MAX Step-up converter section P-channel static drain-source ...
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... V, 3.7 to 3.2 V, 3 200 Hz; t INA,P 10/25 Test conditions Min =3.7V, INA INP I =100mA SW-N2 No load, EN=SW=FD=Low No load, EN=SW=FD=Low 10% of nominal MID O2 value = 3.65 ms 1.25 ms OFF Doc ID 022733 Rev 1 STOD13AS Typ. Max. Unit Ω 0.43 0.8 140 °C 15 °C Ω 400 µs, pulse signal ...
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... STOD13AS 5 Typical performance characteristics 3 INA INP the tests below. Figure 4. Maximum power output vs. input voltage 4.50 4.25 4.00 3.75 3.50 3.25 3.00 2.75 2.50 2.25 2.00 1.75 1.50 1.25 1.00 2.5 2.7 2.9 3.1 3.3 3.5 V_IN [V] Figure 6. Total system efficiency vs. I 90.0 87.5 85.0 82.5 80.0 77.5 75.0 72.5 70.0 67.5 65 105 125 145 I LOAD = -4 °C; See O2 J Figure 5. 90.0 87.5 85.0 82.5 80.0 77.5 Po1,2 MAX 75.0 72.5 70.0 67.5 65 3.7 3.9 4.1 4.3 4.5 Figure 7. LOAD Coilcra LPS4012 at 3.7 V muRata LQH3NPN at 3 ...
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... Figure 10. Step-up CCM operation 2 100 mA, T INA INP MID 12/25 Figure INA INP Figure 11. Inverting CCM operation = 25 ° INA INP Doc ID 022733 Rev 1 Switching and output waveforms = 2 250 mA °C MID, 2 100 mA °C MID J STOD13AS ...
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... V for logic “one”) with operation specified over a supply voltage range of 2 4.5 V ● Both master (MCU) and slave (STOD13AS) are configured to permit bit sequential data to flow only in one direction at a time; master initiates and controls the device ● ...
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... FD (1) operation table S WIRE Low High Low High function. WIRE Fast discharge active after IC shutdown No fast discharge function Doc ID 022733 Rev 1 STOD13AS V Pulse O2 -4.4 31 -4.3 32 -4.2 33 -4.1 34 -4.0 35 -3.9 36 -3.8 37 -3.7 38 -3 Action Device off Negative output set by S Default negative output voltage ...
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... O2 value output current for both DC-DC converters input voltage of the STOD13AS switching frequency. Use the minimum value of 1.35 MHz for the worst case; s η1: efficiency of step-up converter. Typical value is 0.70; η2: efficiency of inverting converter. Typical value is 0.60. ...
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... Application information 7.2 Recommended PCB layout The STOD13AS 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 STOD13AS works in pulse skipping mode when the load current is below some tens of mA. The load current level at which this way of operation occurs depends on input voltage only for the step-up converter and on input voltage and negative output voltage (VO2) for the inverting converter ...
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... EN pin is asserted high. 8.1.7 Undervoltage lockout The undervoltage lockout function avoids improper operation of the STOD13AS when the input voltage is not high enough. When the input voltage is below the UVLO threshold the device is in shutdown mode. The hysteresis avoids unstable operation when the input voltage is close to the UVLO threshold ...
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... STOD13AS normal functionality (assuming that the short condition is removed necessary to restart the converter through an enable transient. 8.1.11 Short-circuit protection (SCP) When short-circuit occurs, the device is able to detect the voltage difference between V and V . Overshoots are limited, decreasing the inductor current. After that, the output OUT stages of the device are turned off ...
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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 trademark. 20/25 Doc ID 022733 Rev 1 STOD13AS www.st.com . ECOPACK ...
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... STOD13AS Table 10. DFN12L ( mechanical data Dim. Min 0.18 D 2.85 D2 1.87 E 2. 0.30 Figure 14. 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 022733 Rev 1 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 22/25 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 101 3.898 14.4 3.3 3.3 1 Doc ID 022733 Rev 1 STOD13AS 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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... STOD13AS Figure 15. DFN12L ( mm) footprint recommended data Doc ID 022733 Rev 1 Package mechanical data 23/25 ...
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... Revision history 10 Revision history Table 11. Document revision history Date Revision 27-Jan-2012 1 24/25 Initial release. Doc ID 022733 Rev 1 STOD13AS Changes ...
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... STOD13AS 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. ...