PCA9922BS NXP [NXP Semiconductors], PCA9922BS Datasheet
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PCA9922BS
Related parts for PCA9922BS
PCA9922BS Summary of contents
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PCA9922 8-channel constant current LED driver with output error detection Rev. 01 — 15 January 2009 1. General description The PCA9922 is an 8-channel constant current LED driver designed for LED signage and display applications. The output current is adjustable ...
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... PCA9922BS HVQFN20 plastic thermal enhanced very thin quad flat package; no leads; 20 terminals; body 5 4.1 Ordering options Table 2. Type number PCA9922N PCA9922PW PCA9922BS PCA9922_1 Product data sheet 8-channel constant current LED driver with output error detection 5 0.85 mm Ordering options Topside mark Temperature range ...
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NXP Semiconductors 5. Block diagram Fig 1. PCA9922_1 Product data sheet 8-channel constant current LED driver with output error detection LED0 LED1 V DD R_EXT CURRENT REGULATOR OUTPUT ENABLE LE 8 DATA LATCH V SS SDI 8 ...
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... PCA9922 SDI CLK 3 LE/DM1 4 PCA9922PW 5 LED0 LED1 6 LED2 7 LED3 8 002aad163 Fig 3. Pin configuration for TSSOP16 15 SDO 14 OE/DM2 PCA9922BS 13 LED7 12 LED6 11 LED5 002aad349 © NXP B.V. 2009. All rights reserved R_EXT 14 SDO 13 OE/DM2 12 LED7 11 LED6 10 LED5 9 LED4 ...
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NXP Semiconductors 6.2 Pin description Table input output. Symbol V SS SDI CLK LE/DM1 LED0 LED1 LED2 LED3 LED4 LED5 LED6 LED7 OE/DM2 SDO R_EXT V DD n.c. [1] HVQFN20 package die supply ground is ...
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NXP Semiconductors 7. Functional description The PCA9922 is an 8-channel constant current LED driver with built-in LED output error detection. The PCA9922 contains an 8-bit shift register and data latches, which convert serial input data into parallel output data. At ...
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NXP Semiconductors Fig 5. 7.2 LED output error detection The PCA9922 has built-in circuitry for detecting LED open-circuit and output short conditions. A predefined set of signal sequence on the input control lines must be initiated to perform the output ...
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NXP Semiconductors Table 4. State of output port off on [1] I th(det) 7.2.2 Short-circuit detection principle The LED short-circuit detection compares the effective voltage level (V shorted-load detection threshold voltages V V th(det)sc V th(norm error status ...
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NXP Semiconductors 7.2.4 Setting the outputs to test Before the Capture Fault sequence may be performed, the outputs must be set up. A logic HIGH must be sent to the output control register for all eight bits. This is done ...
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NXP Semiconductors 7.2.6 Exit error detect mode The ‘Exit error detect mode’ sequence is used to exit the error detect mode of operation and resume normal mode. This is a 5-clock timing sequence using CLK, OE and LE. This sequence ...
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CLK SDI shift_reg[n-1:0] SDO previous serial data shifting out OE LE fault_load fault_data[n-1:0] error_detect_mode Lower-case signal names are internal signals shown to aid understanding of timing. Fig 9. Timing for a complete error detection sequence at ...
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NXP Semiconductors 8. Application design-in information MICROCONTROLLER Fig 10. Typical application V DD CPU Fig 11. The PCA9922 in a typical multi-device architecture PCA9922_1 Product data sheet 8-channel constant current LED driver with output error detection LED0 ...
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NXP Semiconductors 9. Limiting values Table 6. In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol O(LED) V O(SDO O(LEDn) f clk T stg tot 10. Recommended ...
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NXP Semiconductors 12. Static characteristics Table 9. Static characteristics unless otherwise specified. DD amb Symbol Parameter V short-circuit detection threshold th(det)sc voltage V normal mode threshold voltage th(norm) Control interface (OE, LE, ...
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NXP Semiconductors 13. Dynamic characteristics Table 10. Dynamic characteristics Symbol Parameter t LE pulse width w(LE pulse width w(OE) t SDI set-up time su(SDI) t SDI hold time h(SDI) f frequency on pin CLK CLK clock duty cycle ...
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NXP Semiconductors [2] OE must be held active LOW for at least the duration of the rise/fall time of the LEDn pins. This pulse width does not apply to active LOW times for executing error detect sequences. [3] Timing required ...
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NXP Semiconductors Fig 14. Timing 2 PCA9922_1 Product data sheet 8-channel constant current LED driver with output error detection t w(OE PD(OE-LEDH) t PD(OE-LEDL) LEDn w(LE PD(LEH-LEDH) t PD(LEH-LEDL) ...
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NXP Semiconductors 14. Package outline DIP16: plastic dual in-line package; 16 leads (300 mil pin 1 index 1 DIMENSIONS (inch dimensions are derived from the original mm dimensions UNIT max. min. max. ...
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NXP Semiconductors TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4 pin 1 index 1 DIMENSIONS (mm are the original dimensions) A UNIT max. 0.15 0.95 mm ...
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NXP Semiconductors HVQFN20: plastic thermal enhanced very thin quad flat package; no leads; 20 terminals; body 0.85 mm terminal 1 index area terminal 1 20 index area DIMENSIONS (mm are ...
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NXP Semiconductors 15. Handling information All input and output pins are protected against ElectroStatic Discharge (ESD) under normal handling. When handling ensure that the appropriate precautions are taken as described in JESD625-A or equivalent standards. 16. Soldering of SMD packages ...
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NXP Semiconductors • Process issues, such as application of adhesive and flux, clinching of leads, board transport, the solder wave parameters, and the time during which components are exposed to the wave • Solder bath specifications, including temperature and impurities ...
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NXP Semiconductors Fig 18. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “Surface mount reflow soldering description” . 17. Soldering of through-hole mount packages 17.1 Introduction to soldering through-hole mount ...
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NXP Semiconductors 17.4 Package related soldering information Table 13. Package CPGA, HCPGA DBS, DIP, HDIP, RDBS, SDIP, SIL [2] PMFP [1] For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board. [2] For ...
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NXP Semiconductors 20. Legal information 20.1 Data sheet status [1][2] Document status Product status Objective [short] data sheet Development Preliminary [short] data sheet Qualification Product [short] data sheet Production [1] Please consult the most recently issued document before initiating or ...
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NXP Semiconductors 22. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . ...