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LP8733: difference point between LP873345RHDR and LP873347RHDR and LP873344RFDRQ1

Part Number: LP8733

Dear  all

right now  i am reviewing of LDO with i2c for new design 

i dont find  what is difference between LP873345RHDR and LP873347RHDR and  LP873344RFDRQ1 at data sheet.

I just know that Q1 is for AEC-Q100 .

So could you tell me more detail information about these difference points?

bye

  • Hi Seok,

    The differences between the devices are listed in the technical reference manuals which list all the OTP settings.

    I compiled the registers to the table below.

    Register address Bitfield name LP873345RHDR LP873347RHDR  LP873344RFDRQ1
    0x00 DEVICE_ID 0x02 0x2 0x00 0x0 0x00 0x0
    0x01 OTP_ID 0x45 0x45 0x47 0x47 0x44 0x44
    0x02 BUCK0_FPWM_MP 0x00 Automatic phase adding and shedding 0x00 Automatic phase adding and shedding 0x00 Automatic phase adding and shedding
    0x02 BUCK0_FPWM 0x00 AUTO mode 0x00 AUTO mode 0x00 AUTO mode
    0x02 BUCK0_EN_PIN_CTRL 0x01 BUCK0_EN bit and EN pin 0x01 BUCK0_EN bit and EN pin 0x01 BUCK0_EN bit and EN pin
    0x02 BUCK0_EN 0x01 ENABLED 0x01 ENABLED 0x01 ENABLED
    0x03 BUCK0_ILIM 0x05 4.0 A 0x05 4.0 A 0x05 4.0 A
    0x03 BUCK0_SLEW_RATE 0x04 3.8 mV/us 0x04 3.8 mV/us 0x02 10 mV/us
    0x04 BUCK1_FPWM 0x00 AUTO mode 0x00 AUTO mode 0x00 AUTO mode
    0x04 BUCK1_EN_PIN_CTRL 0x01 BUCK1_EN bit and EN pin 0x01 BUCK1_EN bit and EN pin 0x01 BUCK1_EN bit and EN pin
    0x04 BUCK1_EN 0x01 ENABLED 0x01 ENABLED 0x01 ENABLED
    0x05 BUCK1_ILIM 0x05 4.0 A 0x05 4.0 A 0x05 4.0 A
    0x05 BUCK1_SLEW_RATE 0x04 3.8 mV/us 0x04 3.8 mV/us 0x02 10 mV/us
    0x06 BUCK0_VSET 0x1B 750 mV 0x39 900 mV 0x59 1060 mV
    0x07 BUCK1_VSET 0xFC 3300 mV 0x43 950 mV 0x59 1060 mV
    0x08 LDO0_EN_PIN_CTRL 0x01 LDO0_EN bit and EN pin 0x01 LDO0_EN bit and EN pin 0x01 LDO0_EN bit and EN pin
    0x08 LDO0_EN 0x01 ENABLED 0x01 ENABLED 0x01 ENABLED
    0x09 LDO1_EN_PIN_CTRL 0x01 LDO1_EN bit and EN pin 0x01 LDO1_EN bit and EN pin 0x01 LDO1_EN bit and EN pin
    0x09 LDO1_EN 0x01 ENABLED 0x01 ENABLED 0x01 ENABLED
    0x0A LDO0_VSET 0x01 900 mV 0x04 1200 mV 0x0A 1800 mV
    0x0B LDO1_VSET 0x0A 1800 mV 0x01 900 mV 0x0A 1800 mV
    0x0C BUCK0_SHUTDOWN_DELAY 0x02 2.0 ms 0x0C 12.0 ms 0x02 1.0 ms
    0x0C BUCK0_STARTUP_DELAY 0x0C 12.0 ms 0x00 0 ms 0x05 2.5 ms
    0x0D BUCK1_SHUTDOWN_DELAY 0x0F 15.0 ms 0x0A 10.0 ms 0x02 1.0 ms
    0x0D BUCK1_STARTUP_DELAY 0x00 0 ms 0x02 2.0 ms 0x04 2.0 ms
    0x0E LDO0_SHUTDOWN_DELAY 0x00 0 ms 0x00 0 ms 0x0A 5.0 ms
    0x0E LDO0_STARTUP_DELAY 0x0E 14.0 ms 0x0C 12.0 ms 0x00 0 ms
    0x0F LDO1_SHUTDOWN_DELAY 0x0C 12.0 ms 0x0C 12.0 ms 0x03 1.5 ms
    0x0F LDO1_STARTUP_DELAY 0x03 3.0 ms 0x00 0 ms 0x01 0.5 ms
    0x10 GPO_SHUTDOWN_DELAY 0x00 0 ms 0x0C 12.0 ms 0x02 1.0 ms
    0x10 GPO_STARTUP_DELAY 0x00 0 ms 0x01 1.0 ms 0x07 3.5 ms
    0x11 GPO2_SHUTDOWN_DELAY 0x00 0 ms 0x00 0 ms 0x00 0 ms
    0x11 GPO2_STARTUP_DELAY 0x00 0 ms 0x00 0 ms 0x0A 5.0 ms
    0x12 GPO2_OD 0x01 Open-drain output 0x01 Open-drain output 0x01 Open-drain output
    0x12 GPO2_EN_PIN_CTRL 0x00 Only GPO2_EN bit 0x00 Only GPO2_EN bit 0x01 GPO2_EN bit and EN pin
    0x12 GPO2_EN 0x01 Logic HIGH level 0x00 Logic LOW level 0x01 Logic HIGH level
    0x12 GPO_OD 0x01 Open-drain output 0x01 Open-drain output 0x00 Push-pull output
    0x12 GPO_EN_PIN_CTRL 0x00 Only GPO_EN bit 0x01 GPO_EN bit and EN pin 0x01 GPO_EN bit and EN pin
    0x12 GPO_EN 0x01 Logic HIGH level 0x01 Logic HIGH level 0x01 Logic HIGH level
    0x13 STARTUP_DELAY_SEL 0x01 0-15 ms 1 ms steps  0x01 0-15 ms 1 ms steps  0x00 0-7.5 ms 0.5 ms steps
    0x13 SHUTDOWN_DELAY_SEL 0x01 0-15 ms - 1 ms steps  0x01 0-15 ms - 1 ms steps  0x00 0-7.5 ms - 0.5 ms steps
    0x13 CLKIN_PIN_SEL 0x00 GPO2 0x00 GPO2 0x00 GPO2
    0x13 CLKIN_PD 0x01 Pull-down resistor ENABLED 0x01 Pull-down resistor ENABLED 0x00 Pull-down resistor DISABLED
    0x13 EN_PD 0x01 Pull-down resistor ENABLED 0x01 Pull-down resistor ENABLED 0x01 Pull-down resistor ENABLED
    0x13 TDIE_WARN_LEVEL 0x00 125 deg/C 0x00 125 deg/C 0x01 137 deg/C
    0x13 EN_SPREAD_SPEC 0x00 DISABLED 0x00 DISABLED 0x00 DISABLED
    0x14 EN_PLL 0x00 Forced internal oscillator - PLL DISABLED 0x00 Forced internal oscillator - PLL DISABLED 0x00 Forced internal oscillator - PLL DISABLED
    0x14 EXT_CLK_FREQ 0x01 2 MHz 0x01 2 MHz 0x01 2 MHz
    0x15 PGOOD_POL 0x00 PGOOD signal HIGH if outputs valid 0x00 PGOOD signal HIGH if outputs valid 0x00 PGOOD signal HIGH if outputs valid
    0x15 PGOOD_OD 0x00 Push-pull output 0x01 Open-drain output 0x01 Open-drain output
    0x15 PGOOD_WINDOW_LDO 0x00 Only undervoltage monitoring 0x01 Overvoltage and undervoltage monitoring 0x01 Overvoltage and undervoltage monitoring
    0x15 PGOOD_WINDOW_BUCK 0x00 Only undervoltage monitoring 0x01 Overvoltage and undervoltage monitoring 0x01 Overvoltage and undervoltage monitoring
    0x15 EN_PGOOD_LDO1 0x01 LDO1 threshold voltage monitored 0x01 LDO1 threshold voltage monitored 0x01 LDO1 threshold voltage monitored
    0x15 EN_PGOOD_LDO0 0x01 LDO0 threshold voltage monitored 0x01 LDO0 threshold voltage monitored 0x01 LDO0 threshold voltage monitored
    0x15 EN_PGOOD_BUCK1 0x01 BUCK1 threshold voltage monitored 0x01 BUCK1 threshold voltage monitored 0x01 BUCK1 threshold voltage monitored
    0x15 EN_PGOOD_BUCK0 0x01 BUCK0 threshold voltage monitored 0x01 BUCK0 threshold voltage monitored 0x01 BUCK0 threshold voltage monitored
    0x16 EN_PGOOD_TWARN 0x01 PGOOD inactive if thermal warning flag active 0x00 Thermal warning not monitored 0x01 PGOOD inactive if thermal warning flag active
    0x16 PG_FAULT_GATES_PGOOD 0x00 Live status of monitored outputs 0x00 Live status of monitored outputs 0x00 Live status of monitored outputs
    0x16 PGOOD_MODE 0x01 Continuous mode 0x00 Gated mode 0x01 Continuous mode
    0x20 PGOOD_INT_MASK 0x00 UNMASKED 0x01 MASKED 0x01 MASKED
    0x20 SYNC_CLK_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x20 TDIE_WARN_MASK 0x00 UNMASKED 0x01 MASKED 0x00 UNMASKED
    0x20 I_MEAS_MASK 0x00 UNMASKED 0x01 MASKED 0x00 UNMASKED
    0x21 RESET_REG_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x22 BUCK1_PGF_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x22 BUCK1_PGR_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x22 BUCK1_ILIM_MASK 0x00 UNMASKED 0x01 MASKED 0x00 UNMASKED
    0x22 BUCK0_PGF_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x22 BUCK0_PGR_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x22 BUCK0_ILIM_MASK 0x00 UNMASKED 0x01 MASKED 0x00 UNMASKED
    0x23 LDO1_PGF_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x23 LDO1_PGR_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x23 LDO1_ILIM_MASK 0x00 UNMASKED 0x01 MASKED 0x00 UNMASKED
    0x23 LDO0_PGF_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x23 LDO0_PGR_MASK 0x01 MASKED 0x01 MASKED 0x01 MASKED
    0x23 LDO0_ILIM_MASK 0x00 UNMASKED 0x01 MASKED 0x00 UNMASKED
    Switching frequency 2 MHz 2 MHz 2 MHz
    I2C address 0x60 0x60 0x60

    BR,

    Samuli Piispanen

  • Hi Samuli Piispanen

    thank you for your supports .. i got it..

    it is good information to me ..

    bye