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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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RT9107B Arkusz danych(PDF) 4 Page - Richtek Technology Corporation |
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RT9107B Arkusz danych(HTML) 4 Page - Richtek Technology Corporation |
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4 / 42 page  RT9107B 4 DS9107B-00 November 2016 www.richtek.com © Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Function Block Diagram Operation Error Reporting The A_SEL pin has two functions. When the device is reset, the pin functions as device address selection. After the device is reset, 0x05 bit 0 can be programmed to 1 to change its function to error report. Any fault will pull A_SEL to low when the A_SEL pin is used as error report pin. Latched version report is available on 0x02 bit. Clock Detection The RT9107B is a slave device. It can accept SCLK to be as 32fs, 48fs and 64fs and support only a 1xfs LRCK. The internal Oscillator will check MCLK input constantly. If MCLK is lost, the RT9107B will mute and shut down the power stage automatically. Built-in anti-pop Function An internal soft-start function controls the duty ramp-up rate of the output PWM voltage to minimize the pop noise during start-up. Similarly, when power shutdown, the duty also ramp-down to eliminate the pop noise. This function also acts when the PWDNN pin turns ON/OFF. Over Current Protection The RT9107B provides OCP function to prevent the device from damages during overload or short-circuit conditions. The current are detected by an internal sensing circuit. Once overload happens, the OCP function is designed to operate in auto-recovery mode. The auto-recovery time could be programmed by I2C. Under Voltage Protection The RT9107B monitors the voltage on PVDD. When the voltage on PVDD_AB/CD falls below the under voltage threshold, 8V (typ.), the UVP circuit turns off the output immediately and operates in cycle by cycle auto-recovery mode. Over Voltage Protection The RT9107B monitors the voltage on PVDD voltage threshold. When the voltage on PVDD_AB/CD pin rise above the over voltage threshold, 29V (typ.), the OVP circuit turns off the output immediately and operates in cycle by cycle auto-recovery mode. Over Temperature Protection The over temperature protection function will turn off the power MOSFET when the junction temperature exceeds 150 °C. Once the junction temperature cools down by approximately 20 °C, the regulator will automatically resume operation. Power Stage OUT_A PVDD_AB PVDD_CD SCL LRCK BST_A OC/OT/OV/UV Protection SDA A_SEL MCLK OUT_C OUT_B BST_B BST_C PGND_AB OUT_D BST_D PGND_CD PCM2PWM SDM SRC Digital Filter 3D EQ Audio Interface De-pop Control Power Sequence Control Detection PLL Clock Coefficient SRAM BUF Control REG I 2C SCLK SDIN VR_ANA VR_BIAS PLL_FILT RESETB DVDD DVSS DVDD AGND AVSS MUTE GVDD_CD GVDD_AB OC_ADJ PWDNN DVSSO VR_DIG OSC_RES |
Podobny numer części - RT9107B |
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Podobny opis - RT9107B |
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