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BD9422EFV Datasheet(PDF) 2 Page - Rohm |
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BD9422EFV Datasheet(HTML) 2 Page - Rohm |
2 / 30 page Datasheet Datasheet 2/26 TSZ02201-0F1F0C100210-1-2 © 2013 ROHM Co., Ltd. All rights reserved. 1.Sep.2015 Rev.006 www.rohm.com TSZ22111・15・001 BD9422EFV ●Absolute maximum ratings (Ta=25°C) Parameter Symbol Ratings Unit Operating Temperature Range Ta(opr) -40 to +85 °C Storage Temperature Range Tstg -55 to +150 °C Power Dissipation Pd 4.7 *1 W Thermal resistance between junction and case θjc 7 *2 °C/W Maximum Junction Temperature Tjmax 150 °C Maximum LED output current ILED 400 *3 *4 mA *1 In the case of mounting 4 layer glass epoxy base-plate of 70mm×70mm×1.6mm, 37.6mW is reduced at 1°C above Ta=25℃. *2 In the case of mounting 4 layer glass epoxy base-plate of 70mm×70mm×1.6mm. *3 Wide VF variation of LED increases loss at the driver, which results in rise in package temperature. Therefore, the board needs to be designed with attention paid to heat radiation. *4 This current value is per 1ch. It needs be used within a range not exceeding Pd. ●Operating Ratings (Ta = 25°C) Parameter Symbol Range Unit Power supply voltage VCC 9 to 35 V DC/DC oscillation frequency FCT 100 to 1250 *5 kHz VREF input voltage VREF 0.2 to 2.5 V LSP terminal input voltage VLSP 0.8 to 3 V FB terminal output voltage VFB 0 to 3.3 V M_DET terminal output voltage VM_DET 0 to REG9V V The operating conditions written above are constants of the IC unit. Be careful enough when setting the constant in the actual set. ●External Components Recommended Range Item Symbol Setting Range Unit VCC terminal connection capacitance CVCC 1.0 to 10 μF Soft-start set capacitance SS 0.001 to 1.0 μF Timer latch set capacitance CP 0.001 to 2.7 μF Operating frequency set resistance RT 12 to 150 kΩ REG9V terminal connection capacitance CREG9V 2.2 to 10 μF The values described above are constants for a single IC. Adequate attention must be paid to setting of a constant for an actual set of parts ●Pin Configuration ●Physical Dimension Tape and Marking Diagram VCC FAIL REG9V N.C. N PGND CS OVP M_DET SUMPWM LED2 LED1 LED3 LED4 LED6 LED5 STB PWM1 PWM2 PWM3 PWM4 PWM5 FB S2 CP S3 S4 S6 S5 AGND UVLO LSP LED_LV VREF RT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 FAIL_RST S1 FAIL_MODE PWM6 SS Figure 3. LOT No. BD9422EFV Figure 4. HTSSOP-B40 |
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