MAX17135 Datasheet, PDF (1/23 Pages) Maxim Integrated Products – Multi-Output DC-DC Power Supply with VCOM Amplifier and Temperature Sensor for E-Paper Applications

19-5881; Rev 1; 12/11
EVAALVUAAILTAIOBNLEKIT
Multi-Output DC-DC Power Supply with
VCOM Amplifier and Temperature Sensor for
E-Paper Applications
General Description
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 resistor-
divider. The negative source-driver supply voltage
(VNEG) is always tightly regulated to -V_POS 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.
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.
E-Book Readers
Applications
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX17135ETJ+
-40NC to +85NC
32 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Features
S Four Regulated Output Voltages for Source- and
Gate-Driver Power Supplies
S V_POS + V_NEG = ±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
VGVDD
VGVEE
CONTROLLER
PGVDD
DP
FBPG
IN
LXP
PGND
2.7V TO 5.5V
INPUT
FBP
DGVDD
HVINP
DGVEE
POS
VPOS
DN
PGVEE
NEG
VNEG
MAX17135
FBNG
HVINN
INN
REF
LXN
CEN
EN
POK
FLT
VCOM
2.7V TO 5.5V
INPUT
VVCOM
VDD
DXP
I2C
GND
BUS
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.