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SMB110 датащи(PDF) 5 Page - Summit Microelectronics, Inc. |
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SMB110 датащи(HTML) 5 Page - Summit Microelectronics, Inc. |
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5 / 34 page ![]() SMB110 Preliminary Information Summit Microelectronics, Inc 2099 2.3 3/1/2005 5 INTERNAL BLOCK DIAGRAM Channel 5 DEADTIME + – OA LEVEL SHIFTER + – GLITCH FILTER GLITCH FILTER CLAMP DUTY CYCLE LIMIT OVER VOLTAGE DETECTION 100k MAX LIMIT LOW LIMIT + – OA LEVEL SHIFTER GLITCH FILTER GLITCH FILTER CLAMP DUTY CYCLE LIMIT MAX LIMIT LOW LIMIT SEQUENCING LOGIC ENABLE ENABLE ENABLE DIGITAL TO ANALOG CONVERTER DRIVER + – + – OVER VOLTAGE DETECTION OVER VOLTAGE DETECTION UNDER VOLTAGE DETECTION UNDER VOLTAGE DETECTION UNDER VOLTAGE DETECTION LSDRV0 COMP1_CH0 Channel 0 Negative PWM Converter Channel 2 and 3 Synchronous buck PWM Converter Channel 1 boost PWM Converter with Shutoff HSDRV[2,3] LSDRV[2,3] PCHSEQ_CH1 LSDRV1 VBATT COMP1_CH[2,3] COMP2_CH[2,3] COMP1_CH1 COMP2_CH1 VSTANDBY VM_CH[2,3] VREF VREF VREF VREF OSC Fixed 800kHz OSC Fixed 800kHz OSC Fixed 800kHz MAX LIMIT LOW LIMIT LDO_SUPPLY + – PWREN0 + – OA LEVEL SHIFTER + – + – GLITCH FILTER GLITCH FILTER CLAMP DUTY CYCLE LIMIT GND HVSUP[2,3] VDD_CAP COMP2_CH0 X2 VREF_OUT LEVEL SHIFTER VREF SCL SDA I2C/SMBUS + – LEVEL SHIFTER + – DQ 2.5V REGULATOR VDD_CAP UV2 UV1 100u + – COMP DRIVER 0.2 V LDO nBATT_FAULT BANDGAP VREF Standby Series-Pass LDO + – + – + – + – |
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