19-5881; Rev 2; 5/12
TION KIT
EVALUA BLE
AVAILA
Multi-Output DC-DC Power Supply with
VCOM Amplifier and Temperature Sensor for
E-Paper Applications
The MAX17135 is a complete power-management IC for
E-paper displays that provides source- and gate-driver
power supplies, a high-speed VCOM amplifier, and a
temperature sensor.
The source-driver power supplies consist of a boost
converter and an inverting buck-boost converter that
generates +15V (up to +17V) and -15V (up to -17V),
respectively. Both source-driver power supplies can
deliver up to 200mA. The positive source-driver supply
regulation voltage (VPOS) can be set either by using
an I2C interface or by connecting an external resistordivider. The negative source-driver supply voltage
(VNEG) is always tightly regulated to -VPOS within Q50mV.
The gate-driver power supplies consist of regulated
charge pumps that generate +22V (up to +40V) and
-20V (up to -40V) and can deliver up to 20mA each.
Features
S Four Regulated Output Voltages for Source- and
Gate-Driver Power Supplies
S VPOS + VNEG = ±50mV Tracking Accuracy
S Measures Internal and Remote Diode Temperature
Sensors
S True Shutdown on All Outputs
S 2.7V to 5.5V IN Supply Voltage Range
S Controlled Inrush Current During Soft-Start
S I2C Serial Interface for Temperature Read, Power
Output Enable, POS Voltage Regulation Set-Point
Adjustment, Power-Up/Power-Down Sequencing
Adjustment, and Fault Monitoring
Simplified Operating Circuit
The IC features a VCOM amplifier output whose output
voltage is controlled by an internal 8-bit digital-to-analog
converter (DAC). The DAC is programmable through an
I2C interface and allows small-voltage-step sizes per
DAC step.
The IC includes a temperature sensor that provides
the ability to read the internal IC temperature and an
external panel temperature with the use of an external
temperature-sensing diode. Temperature output data is
supplied through I2C.
The device is available in a space-saving, 32-pin TQFN
package and is specified over the -40NC to +85NC
extended temperature range.
PGVDD
DP
LXP
VGVDD
FBP
DGVDD
DGVEE
VGVEE
NEG
VNEG
MAX17135
Ordering Information
HVINN
REF
32 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
2.7V TO 5.5V
INPUT
INN
PIN-PACKAGE
-40NC to +85NC
VPOS
PGVEE
FBNG
TEMP RANGE
HVINP
POS
DN
E-Book Readers
MAX17135ETJ+
PGND
FBPG
Applications
PART
2.7V TO 5.5V
INPUT
IN
LXN
CEN
CONTROLLER
EN
POK
FLT
VCOM
VDD
I2C
BUS
VVCOM
DXP
GND
DXN
SCL SDA
EP
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX17135
General Description
