http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf



Maxim
Maxim

MAX17116 Datasheet

Dual-Output DC/DC Power Supply


MAX17116 Datasheet Preview


19-5653; Rev 0; 12/10
EVAALVUAAILTAIOBNLEKIT
Dual-Output DC/DC
Power Supply for AMOLED
General Description
The MAX17116 includes two current-mode 1.4MHz
switch mode power-supply (SMPS) regulators for active-
matrix organic light-emitting diode (AMOLED) displays.
The positive supply is provided by a step-up regulator
with a synchronous rectifier. The negative supply is
provided by an inverting regulator with a synchronous
rectifier.
The step-up DC-DC converter is a high-accuracy 250mA
regulator with an integrated power MOSFET switch
and synchronous rectifier. The synchronous rectifier
improves efficiency and also provides True ShutdownTM.
Its 4.6V (fixed) output efficiency exceeds 85% at 150mA
from a 3.7V input. A built-in, 7-bit, digital soft-start func-
tion controls startup inrush currents.
The inverting DC-DC converter is a high-accuracy
250mA regulator with a built-in power MOSFET switch
and synchronous rectifier. Its -5.4V to -1.5V output effi-
ciency exceeds 80% at 150mA from a 3.7V input. A built-
in, 7-bit, digital soft-start function controls startup inrush
currents. The internally set output voltage is adjusted
through a unique communication protocol through the
single EN pin.
The IC is available in a 12-pin, 3mm x 3mm x 0.5mm,
ultra-thin DFN package with exposed pad and 0.5mm
lead spacing to facilitate placement on extremely narrow
circuit boards and a 24-pin, 4mm x 4mm, thin QFN pack-
age with exposed pad.
OLED Displays
Phone, DSC Displays
Automobile Navigation
Applications
Features
S 2.3V to 4.2V Input Operating Voltage Range
S High-Performance PWM Step-Up Regulator
Fixed 4.6V, 250mA Output
High Accuracy (±1%)
1.4MHz Switching Frequency
Built-In 6V/0.25I n-Channel MOSFET with
Lossless Current Sensing
Built-In 6V/0.5I p-Channel MOSFET
Synchronous Rectifier
Cycle-by-Cycle Current Limit
More than 85% Efficiency at 150mA
Good Low-Duty Factor Operation
S High-Performance PWM Inverting Regulator
Programmable 250mA Output
High Accuracy (±1%)
Adjustable Controlled-Output-Voltage Slew Rate
1.4MHz Switching Frequency
Built-In 14V/0.25I p-Channel Power MOSFET
with Lossless Current Sensing
Built-In 14V/0.25I n-Channel Power MOSFET
Synchronous Rectifier
Cycle-by-Cycle Current Limit
More than 80% Efficiency at 150mA
S True Shutdown for Both Outputs
S Timer-Delayed Output Undervoltage Shutdown for
Both Outputs
S Thermal-Overload Protection
S 12-Pin, 3mm x 3mm Ultra-Thin DFN Package and
24-Pin, 4mm x 4mm TQFN Package
Ordering Information
PART
MAX17116EVC+
MAX17116ETG+*
TEMP RANGE
-40NC to +85NC
-40NC to +85NC
PIN-PACKAGE
12 UTDFN**
24 TQFN**
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Future product—contact factory for availability.
**Exposed pad.
True Shutdown is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ 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.
Page 1

Dual-Output DC/DC
Power Supply for AMOLED
ABSOLUTE MAXIMUM RATINGS
IN, EN, IC, OUTP, LXP to AGND.............................-0.3V to +6V
LXN to IN................................................................-14V to +0.3V
STEP to AGND............................................-0.3V to (VIN + 0.3V)
PGND to AGND....................................................-0.3V to +0.3V
OUTN to AGND........................................................-7V to +0.3V
LXN to OUTN.........................................................-0.3V to +14V
LXP, LXN, OUTP, OUTN, IN RMS Current Rating................1.6A
Continuous Power Dissipation (TA = +70NC)
12-Pin UTDFN (derate 15.1mW/NC above +70NC).....1206.6W
24-Pin TQFN (derate 19mW/NC above +70NC).......1520.9mW
Operating Temperature Range........................... -40NC to +85NC
Junction Temperature......................................................+150NC
Storage Temperature Range............................ -65NC to +160NC
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
(VIN = +3.7V, Circuit of Figure 2, VOUTP = +4.9V, VOUTN = -4.9V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at
TA = +25NC.) (Note 1)
PARAMETER
IN Input Supply Range
CONDITIONS
MIN TYP MAX UNITS
2.3 4.2 V
IN Undervoltage-Lockout
Threshold
IN Quiescent Current
OUTP Quiescent Current
VIN Quiescent Current
IN Shutdown Current
STEP-UP REGULATOR
OUTP Regulation Voltage
OUTP Fault Trip Level
OUTP Load Regulation
Oscillator Frequency
Maximum Load Current
LXP/OUTP Peak Current Limit
LXP nMOS N1 On-Resistance
LXP pMOS1 P1 On-Resistance
LXP pMOS2 P2 On-Resistance
LXP Damping Switch
On-Resistance
VIN rising, hysteresis = 200mV
EN = IN, no load, not switching
EN = IN, no load, not switching
EN = IN, no load
EN = AGND, TA = +25NC
ILOAD = 10mA to 200mA,
VIN = 2.3V to 4.2V
Falling edge, no hysteresis
Falling edge, no hysteresis, no timer
0 < ILOAD < 200mA, DC regulation
VIN = 2.9V to 4.2V (Note 2)
Duty cycle = 35%
ILXP1 = 200mA, Figure 3
ILXP1 = 200mA, Figure 3
ILXP2 = 200mA, Figure 3
1.8 2.0 2.2
V
50 90 FA
0.8 1.1 mA
1.6 2.5 mA
1 FA
4.554
3.496
2.116
1190
250
850
4.60
3.68
2.3
0.1
1400
1100
0.2
0.15
0.15
20
4.646
3.864
2.484
1610
1350
0.4
0.3
0.3
V
V
%
kHz
mA
mA
I
I
I
I
OUTP Discharge Resistance
Soft-Start Period
OUTP to PGND
7-bit voltage ramp with filtering to prevent high peak
currents
330 I
2 ms
INVERTING REGULATOR
OUTN Default Regulation
Voltage
At startup: ILOAD 10mA to 200mA; VIN = 2.3V to 4.2V
-4.949 -4.9 -4.851
V
OUTN Minimum Regulation
Voltage
Lowest DAC code: ILOAD 10mA to 200mA;
VIN = 2.3V to 4.2V
-5.454 -5.4 -5.346
V
2
Page 2

Dual-Output DC/DC
Power Supply for AMOLED
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +3.7V, Circuit of Figure 2, VOUTP = +4.9V, VOUTN = -4.9V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at
TA = +25NC.) (Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
OUTN Maximum Regulation
Voltage
Highest DAC code: ILOAD 10mA to 200mA;
VIN = 2.3V to 4.2V
-1.530 -1.5 -1.470
V
OUTN Fault Trip Level
Rising edge, no hysteresis,
relative to current DAC step
Rising edge, no hysteresis,
relative to current DAC step, no timer
73 80 87
43 50 57
%
Oscillator Frequency
Maximum Load Current
OUTN/LXN Peak Current Limit
LXN-to-IN pMOS On-Resistance
LXN-to-OUTN nMOS
On-Resistance
VIN = 2.9V to 4.2V (Note 2)
Duty cycle = 65%
ILXN = 200mA
ILXN = 200mA
1190
250
1000
1400
1200
0.25
0.25
1610
1400
0.50
0.50
kHz
mA
mA
I
I
LXN Damping Switch
On-Resistance
70 I
OUTN Discharge Resistance
Soft-Start Period
OUTN to PGND
7-bit voltage ramp with filtering to prevent high peak
currents
330 I
2 ms
DAC Step Voltage
Number of DAC Steps Between
Levels
0.01
0.025
4
0.04
V
STEP Period
SEQUENCE CONTROL
EN Input Low Voltage
EN Input High Voltage
EN Input Resistance
FAULT DETECTION
STEP = AGND
RSTEP = 50kI
RSTEP = 150kI
To AGND
3.5 4 4.5
1.5 2 2.5
567
0.6
1.2
140
ms
V
V
kI
Duration-to-Trigger Fault
Condition
OUTP or OUTN below threshold
50 ms
Thermal-Shutdown Threshold
TIMING SPECIFICATIONS
Enable Start Delay
EN Pulse Stop Time
EN Turn-Off Delay
OUTN Initial Start Ramp Time
Latched fault
tEN_DLY (Note 3)
tSTOP (Note 3)
tOFF_DLY (Note 3)
OUTN transition
from -4.9V to -1.5V (Note 4)
+160
300 400
250 300
50 60 70
2
NC
Fs
Fs
Fs
ms
EN Pulse Frequency
50% duty factor
12 50 250 kHz
3
Page 3
Part Number MAX17116
Manufactur Maxim
Description Dual-Output DC/DC Power Supply
Total Page 19 Pages
PDF Download
MAX17116 datasheet pdf
Download PDF File
MAX17116 view html
View PDF for Mobile


Related Datasheet

MAX1711 , MAX17112 , MAX17116 , MAX17117 ,

site map

webmaste! click here

contact us

Buy Components