Application Circuits
Typical Application Circuits
MAX25608/MAX25608C
Connect external bypass capacitor to GND.
IN
IN
GND
GND
Drain of Internal Switch 12. Add a 0.1μF capacitor from DR12 to GND.
DR12
DR12
VBAT
V
BAT
LDO Output. Nominal voltage is 1.8V. Connect a bypass capacitor between VDD and GND.
VDD
V
DD
After startup, can be optionally configured with UART to drive a clock signal to other devices, or act as a pass-through for the CLKIN input.
CLKOUT
CLKOUT
Charge Pump Capacitor Positive Connection. Connect a 0.1µF ceramic capacitor from CPP to CPN.
CPP
CPP
Charge Pump Capacitor Negative Connection. Connect a 0.1µF from CPP to CPN.
CPN
CPN
EP
EP
UART Receive Input. If the driver to this pin is CMOS output, no pull-up resistor is needed. If the driver to this pin is open drain, add a 1.5kΩ pull-up resistor.
RX
RX
UART Transmit Output. Add a 1.5kΩ pull-up resistor.
TX
TX
MAX25608/MAX25608C
MAX25608
MAX25608C
Drain of Internal Switch 11.
DR11
DR11
Drain of Internal Switch 10.
DR10
DR10
Drain of Internal Switch 1.
DR1
DR1
CLK Input. Can be optionally used to sync the device with an external digital clock signal.
CLKIN
CLKIN
LED DRIVER
LED
DRIVER
MCU
MCU
VBAT
V
BAT
NTC Divider ADC Input. Connect to NTC resistor divider to enable remote temperature sensing.
RTEMP
RTEMP
LED Binning Resistor Connection. Connect a LED binning resistor from this pin to GND.
RGRADE
RGRADE
LED x 12
LED x 12
Source of Internal Switch 1.
SRC1
SRC1
LDO Output. Nominal voltage is 1.8V. Connect a bypass capacitor between VDD and GND.
VDD
V
DD
NTC
NTC
UART Transmit Output. Add a 1.5kΩ pull-up resistor.
TX
TX
UART Receive Input. If the driver to this pin is CMOS output, no pull-up resistor is needed. If the driver to this pin is open drain, add a 1.5kΩ pull-up resistor.
RX
RX
CIN
C
IN
CVDD
C
VDD
LED Binning Resistor Connection. Connect a LED binning resistor from this pin to GND.
RGRADE
R
GRADE
RTEMP1
R
TEMP1
Device ID Resistor. Connect a resistor value from RADDR to GND to set the UART Device ID.
RADDR
R
ADDR
CCP
C
CP
VIO
V
IO
VIO
V
IO
RRX
R
RX
RTX
R
TX
CDR12
C
DR12
Device ID Resistor. Connect a resistor value from RADDR to GND to set the UART Device ID.
RADDR
RADDR
VIO
R
FLT
Open-Drain Fault Indicator. Goes low when a fault condition is present.
VDD
FLT
MAX25608B
Connect external bypass capacitor to GND.
IN
IN
GND
GND
Drain of Internal Switch 12. Add a 0.1μF capacitor from DR12 to GND.
DR12
DR12
VBAT
V
BAT
Open-Drain Fault Indicator. Goes low when a fault condition is present.
FLT
FLT
LDO Output. Nominal voltage is 1.8V. Connect a bypass capacitor between VDD and GND.
VDD
V
DD
After startup, can be optionally configured with UART to drive a clock signal to other devices, or act as a pass-through for the CLKIN input.
CLKOUT
CLKOUT
Charge Pump Capacitor Positive Connection. Connect a 0.1µF ceramic capacitor from CPP to CPN.
CPP
CPP
Charge Pump Capacitor Negative Connection. Connect a 0.1µF from CPP to CPN.
CPN
CPN
EP
EP
UART Receive Input. If the driver to this pin is CMOS output, no pull-up resistor is needed. If the driver to this pin is open drain, add a 1.5kΩ pull-up resistor.
RX
RX
UART Transmit Output. Add a 1.5kΩ pull-up resistor.
TX
TX
MAX25608B
MAX25608B
Drain of Internal Switch 11.
DR11
DR11
Drain of Internal Switch 10.
DR10
DR10
Drain of Internal Switch 1.
DR1
DR1
CLK Input. Can be optionally used to sync the device with an external digital clock signal.
CLKIN
CLKIN
LED DRIVER
LED
DRIVER
CAN
CAN
MCU
MCU
CAN
CAN
VBAT
V
BAT
NTC Divider ADC Input. Connect to NTC resistor divider to enable remote temperature sensing.
RTEMP
RTEMP
LED Binning Resistor Connection. Connect a LED binning resistor from this pin to GND.
RGRADE
RGRADE
LED x 12
LED x 12
Source of Internal Switch 1.
SRC1
SRC1
LDO Output. Nominal voltage is 1.8V. Connect a bypass capacitor between VDD and GND.
VDD
V
DD
NTC
NTC
UART Transmit Output. Add a 1.5kΩ pull-up resistor.
TX
TX
UART Receive Input. If the driver to this pin is CMOS output, no pull-up resistor is needed. If the driver to this pin is open drain, add a 1.5kΩ pull-up resistor.
RX
RX
CIN
C
IN
CVDD
C
VDD
LED Binning Resistor Connection. Connect a LED binning resistor from this pin to GND.
RGRADE
R
GRADE
RTEMP1
R
TEMP1
Device ID Resistor. Connect a resistor value from RADDR to GND to set the UART Device ID.
RADDR
R
ADDR
CCP
C
CP
VIO
V
IO
VIO
V
IO
RRX
R
RX
RTX
R
TX
RFLT
R
FLT
CDR12
C
DR12
Device ID Resistor. Connect a resistor value from RADDR to GND to set the UART Device ID.
RADDR
RADDR
