19-5881; Rev 2; 5/12
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 (V
POS
) can be set either by using
an I
2
C interface or by connecting an external resistor-
divider. The negative source-driver supply voltage
(V
NEG
) 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
I
2
C 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 I
2
C.
The device is available in a space-saving, 32-pin TQFN
package and is specified over the -40NC to +85NC
extended temperature range.
V
GVDD
TION KIT
EVALUA BLE
AVAILA
Features
S
Four Regulated Output Voltages for Source- and
MAX17135
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
I
2
C 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
IN
PGVDD
DP
LXP
FBPG
PGND
2.7V TO 5.5V
INPUT
FBP
DGVDD
DGVEE
V
GVEE
DN
HVINP
POS
V
POS
Applications
E-Book Readers
PGVEE
NEG
V
NEG
MAX17135
FBNG
HVINN
INN
REF
LXN
CEN
CONTROLLER
EN
POK
FLT
VCOM
V
DD
DXP
V
VCOM
2.7V TO 5.5V
INPUT
Ordering Information
PART
MAX17135ETJ+
TEMP RANGE
-40NC to +85NC
PIN-PACKAGE
32 TQFN-EP*
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
I
2
C
BUS
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.
Multi-Output DC-DC Power Supply with
VCOM Amplifier and Temperature Sensor for
E-Paper Applications
MAX17135
ABSOLUTE MAXIMUM RATINGS
IN, EN, CEN, VDD, SDA, SCL, INN,
FLT
to GND ...-0.3V to +6V
FBPG, FBNG, FBP, DXP, DXN,
REF to GND..............................................-0.3V to (V
IN
+ 0.3V)
POK to GND ............................................-0.3V to (V
VDD
+ 0.3V)
LXP to PGND .........................................................-0.3V to +20V
PGVDD, POS to GND ...........................-0.3V to (V
HVINP
+ 0.3V)
LXN to PGND .......................... (V
HVINN
- 0.3V) to (V
INN
+ 0.3V)
PGVEE, NEG to GND .......................... (V
HVINN
- 0.3V) to +0.3V
DP to PGND .........................................-0.3V to (V
HVINP
+ 0.3V)
DN to PGND ........................................ (V
HVINN
- 0.3V) to +0.3V
DGVDD to GND.....................................................-0.3V to +42V
HVINN to PGND ....................................................-20V to +0.3V
DGVEE to GND .....................................................-42V to +0.3V
DGVDD to HVINN............................................................... +60V
VCOM to GND .................................... (V
HVINN
- 0.3V) to +0.3V
PGND to GND .....................................................-0.3V to +0.3V
LXP, LXN, INN, PGND RMS Current Rating .......................1.6A
Continuous Power Dissipation (multilayer board)
TQFN (derate 24.9mW/NC above T
A
= +70NC) ........... 1990mW
Operating Temperature Range .......................... -40NC to +85NC
Junction Temperature .....................................................+150NC
Storage Temperature Range............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
IN
= 3.6V,
Typical Operating Circuit
of Figure 2, V
HVINP
= 15V, V
NEG
= -15V,
T
A
= -40°C to +85°C,
unless otherwise noted. Typical
values are at T
A
= +25NC.)
PARAMETER
IN Voltage Range
IN UVLO Threshold
IN UVLO Hysteresis
EN = GND and the SHUTDOWN bit in
the Configuration register = 1
EN = GND and the SHUTDOWN bit in
the Configuration register = 0
V
EN
= 3.6V, no switching, SHUTDOWN
bit in the Configuration register = 0
V
EN
= 3.6V, switching, SHUTDOWN bit in
the Configuration register = 0
V
DD
Input Voltage
V
DD
UVLO Threshold
V
DD
Quiescent Current
REF Output Voltage
REF UVLO Threshold
REF UVLO Hysteresis
REF Load Regulation
REF Line Regulation
0 < I
REF
< 100FA
2.7V < V
IN
< 5.5V
V
DD
rising, hysteresis = 150mV
EN = GND
Normal mode
No load
REF rising
1.238
1.6
1.2
4
4
1.250
1.0
100
10
2
V
IN
rising
SYMBOL
CONDITIONS
MIN
2.7
2.45
2.55
100
4
0.8
2
3
5.5
1.5
10
10
1.262
1.2
V
V
FA
V
V
mV
mV
mV
10
1.5
3.5
mA
TYP
MAX
5.5
2.65
UNITS
V
V
mV
FA
INPUT SUPPLIES AND REFERENCE
IN Quiescent Current
2
Multi-Output DC-DC Power Supply with
VCOM Amplifier and Temperature Sensor for
E-Paper Applications
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3.6V,
Typical Operating Circuit
of Figure 2, V
HVINP
= 15V, V
NEG
= -15V,
T
A
= -40°C to +85°C,
unless otherwise noted. Typical
values are at T
A
= +25NC.)
PARAMETER
STEP-UP REGULATOR
Output Voltage Range
Operating Frequency
Oscillator Maximum Duty Cycle
Output Voltage Resolution
POS Output Regulation Error
FBP Regulation Voltage
FBP Load Regulation
FBP Line Regulation
FBP Input Bias Current
FBP Internal Divider Enable
Threshold
LXP On-Resistance
LXP Leakage Current
LXP Current Limit
Soft-Start Period
INVERTING REGULATOR
INN Input Voltage Range
EN = GND
INN Quiescent Current
Output Voltage Range
Operating Frequency
Oscillator Maximum Duty Cycle
V
POS
+ V
NEG
Regulation
Voltage
LXN On-Resistance
LXN Leakage Current
LXN Current Limit
Soft-Start Period
POSITIVE CHARGE-PUMP REGULATOR
PGVDD Operating Voltage
Range
HVINP-DP Current Limit
Oscillator Frequency
V
PGVDD
7
150
400
500
600
V
HVINP
V
mA
kHz
V
INN
= 2.7V to 5.5V, 1mA < I
NEG
<
200mA, I
POS
= no load
INN to LXN, I
LXN
= 0.2A
V
LXN
= V
HVINN
= -18V, T
A
= +25NC
Duty cycle = 85%
1.8
2.1
5
V
HVINN
No switching
Switching
-17
850
91
-100
250
1000
95
1150
98
+100
500
20
2.4
2.7
5.5
10
10
3
V
FA
mA
V
kHz
%
mV
mI
FA
A
ms
1mA < I
POS
< 200mA
V
IN
= 2.7V to 5.5V
V
FBP
= 1.25V, T
A
= +25NC
FBP rising, hysteresis = 10mV
I
LXP
= 0.2A
EN = GND, V
LXP
= 18V, T
A
= +25NC
Duty cycle = 80%
1.5
1.8
5
50
FBP = GND
FBP = GND, V
INN
= 2.7V to 5.5V,
1mA < I
POS
< 200mA
-2
1.238
1.250
-1
-0.08
125
25
250
200
50
500
20
2.1
V
HVINP
V
POS
FBP = GND
V
IN
5
850
91
1000
95
4
+2
1.262
17
17
1150
98
V
kHz
%
Bits
%
V
%
%/V
nA
mV
mI
FA
A
ms
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX17135
3
Multi-Output DC-DC Power Supply with
VCOM Amplifier and Temperature Sensor for
E-Paper Applications
MAX17135
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3.6V,
Typical Operating Circuit
of Figure 2, V
HVINP
= 15V, V
NEG
= -15V,
T
A
= -40°C to +85°C,
unless otherwise noted. Typical
values are at T
A
= +25NC.)
PARAMETER
FBPG Regulation Voltage
FBPG Line Regulation
FBPG Load Regulation
FBPG Input Bias Current
DP On-Resistance High
DP On-Resistance Low
Soft-Start Period
NEGATIVE CHARGE-PUMP REGULATOR
PGVEE Operating Voltage
Range
HVINN-DN Current Limit
Oscillator Frequency
FBNG Regulation Voltage
FBNG Line Regulation
FBNG Load Regulation
FBNG Input Bias Current
DN On-Resistance High
DN On-Resistance Low
Soft-Start Period
VCOM
Input Supply Range
HVINP Shutdown Current
V
EN
= GND and the SHUTDOWN bit
in the Configuration register = 1,
V
HVINP
= 3.6V
V
HVINP
= 15V, V
EN
= 3.6V,
Configuration register = 0
V
HVINN
= -15V, V
EN
= 3.6V,
Configuration register = 0
I
VCOM
= 5mA
I
VCOM
= -5mA
0mA < I
VCOM
< 30mA, sourcing,
DVR register = 7Fh
0mA < I
VCOM
< 30mA, sinking,
DVR register = 7Fh
Sourcing
Sinking
CEN = GND, T
A
= +25NC
70
70
1
V
HVINN
+ 50
-1.6
V
HVINN
10
-5
30
V
µA
V
NEG
= -11V to -16V
0mA < I
GVEE
< 100mA
V
FBNG
= 0V, T
A
= +25NC
I
DN
= 100mA
I
DN
= -100mA
-50
3
1.5
10
V
PGVEE
V
HVINN
150
400
-12
500
0
0.05
-0.03
+50
6
3
600
+12
-7
V
mA
kHz
mV
%/V
%
nA
I
I
ms
V
HVINP
= 11V to 16V
0mA < I
GVDD
< 100mA
V
FBPG
= 1.25V, T
A
= +25NC
I
DP
= 100mA
I
DP
= -100mA
-50
3
1.5
10
SYMBOL
CONDITIONS
MIN
1.238
TYP
1.250
0.05
0.04
+50
6
3
MAX
1.262
UNITS
V
%/V
%
nA
I
I
ms
HVINP Quiescent Current
HVINN Quiescent Current
VCOM Voltage High
VCOM Voltage Low
0.8
2.0
-25
V
HVINN
+ 25
-0.6
-50
mA
mA
mV
mV
VCOM Load Regulation
%
0.3
1.3
mA
FA
VCOM Output Current
VCOM High Impedance
Leakage
4
Multi-Output DC-DC Power Supply with
VCOM Amplifier and Temperature Sensor for
E-Paper Applications
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3.6V,
Typical Operating Circuit
of Figure 2, V
HVINP
= 15V, V
NEG
= -15V,
T
A
= -40°C to +85°C,
unless otherwise noted. Typical
values are at T
A
= +25NC.)
PARAMETER
SEQUENCE SWITCHES
POS Output Range
POS On-Resistance
POS Charge Current Limit
POS Discharge Resistance
POS Soft-Start Charge Time
NEG Output Range
NEG On-Resistance
NEG Charge Current Limit
NEG Discharge Resistance
NEG Soft-Start Charge Time
PGVDD On-Resistance
PGVEE On-Resistance
DGVDD AND DGVEE
DGVDD Input Voltage Range
DGVDD Discharge Resistance
DGVEE Input Voltage Range
DVGEE Discharge Resistance
VCOM Discharge Resistance
FAULT PROTECTION
HVINP Fault Threshold
FBP Fault Threshold
FBPG Fault Threshold
HVINN Fault Threshold
FBNG Fault Threshold
Feedback Fault Timer
Thermal Shutdown
TEMPERATURE SENSOR
Temperature Resolution
External Diode Temperature
Error
External Conversion Time
Conversion Rate
Diode Source Current
Diode Source Current Ratio
Register 0Fh = 100b
Register 0Fh = 111b
V
DXP
= 1.5V - high level
V
DXP
= 1.5V - low level
V
DXP
= 1.5V
90
9.0
9.5
Monotonicity guaranteed
LSB
T
A
= 0NC to +85NC
T
A
= -40NC to +125NC
-4
-8
60
1
8
100
10
10
110
11.0
10.5
8
0.5
+4
+8
Bits
NC
NC
ms
Conv/s
FA
A/A
Hysteresis = 15NC
V
HVINP
falling
V
FBP
falling
V
FBPG
falling
V
HVINN
rising
V
FBNG
rising
75
0.95
0.95
-V
HVINP
x 0.85
200
80
1.00
1.00
-V
HVINP
x 0.8
250
50
160
85
1.05
1.05
-V
HVINP
x 0.75
300
%
V
V
V
mV
ms
NC
7
800
-40
800
100
1200
170
1200
40
1600
-7
1600
300
V
I
V
I
I
(HVINP - PGVDD), I
PGVDD
= 30mA
(HVINN - PGVEE), I
PGVEE
= 30mA
V
NEG
Tracks HVINN
(HVINN - NEG), I
NEG
= 100mA
250
200
340
10
4
1.5
7
3
600
-17
0.6
1
V
POS
Tracks HVINP
(HVINP - POS), I
POS
= 100mA
250
200
340
10
600
V
IN
0.9
17
1.3
V
I
mA
I
ms
V
I
mA
I
ms
I
I
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX17135
5
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