MAX16813AUP/V+T

MAX16813AUP/V+T Datasheet

MAX16813

Part	Datasheet
MAX16813AUP/V+T	MAX16813AUP/V+T (pdf)

Related Parts	Information
MAX16813ATP/V+	MAX16813ATP/V+
MAX16813TEVKIT#	MAX16813TEVKIT#
MAX16813ATP+T	MAX16813ATP+T
MAX16813AUP+T	MAX16813AUP+T
MAX16813ATP/V+T	MAX16813ATP/V+T
MAX16813AUP/V+	MAX16813AUP/V+
MAX16813ATP+	MAX16813ATP+
MAX16813AUP+	MAX16813AUP+

PDF Datasheet Preview
MAX16813 EVALUATION KIT AVAILABLE Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller and Battery Disconnect The MAX16813 high-efficiency, high-brightness LED HB LED driver provides four integrated LED current-sink channels. An integrated current-mode switching controller drives a DC-DC converter that provides the necessary voltage to multiple strings of HB LEDs. The device accepts a wide 4.75V to 40V input voltage range and withstands direct automotive load-dump events. The wide input range allows powering HB LEDs for small- to medium-sized LCD displays in automotive and general lighting applications. An internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. An integrated spread-spectrum mode helps reduce EMI. Current-mode control with programmable slope compensation provides fast response and simplifies loop compensation. An adaptive output-voltage control scheme minimizes power dissipation in the LED current-sink paths. The device has a separate p-channel drive PGATE pin that is used for output undervoltage protection. Whenever the output falls below the threshold, the external p-MOSFET is latched off, disconnecting the input source. Cycling the EN or the input supply is required to restart the converter. The external p-MOSFET is off when the EN pin is below 0.3V typ . The shutdown current is 1µA typ at an input voltage of 12V. The device consists of four identical linear current-sink channels, adjustable from 20mA to 150mA with an accuracy of ±3% using a single external resistor. Multiple channels can be connected in parallel to achieve higher current per LED string. The device also features a unique pulsed dimming control through a logic input DIM , with minimum pulse width as low as 500ns. Protection features include output overvoltage, open-LED detection and protection, programmable shorted LED detection and protection, output undervoltage protection and detection, and overtemperature protection. The device operates over the -40°C to +125°C automotive temperature range. The MAX16813 is available in 20-pin 6.5mm x 4.4mm TSSOP and 20-pin 4mm x 4mm TQFN packages. Benefits and Features ● 4-Channel Linear LED Current Sinks with Internal MOSFETs Independently Drive Multiple LED Strings • Full-Scale LED Current Adjustable from 20mA to 150mA • Drives 1 to 4 LED Strings • 10000:1 PWM Dimming at 200Hz ● Flexible Current-Mode Architecture Supports a Wide Range of Applications While Minimizing Interference • Boost or SEPIC Current-Mode DC-DC Controller • 200kHz to 2MHz Programmable Switching Frequency • External Switching-Frequency Synchronization • Spread-Spectrum Mode ● Protection Features Enhance Fault Detection and System Reliability • Output-to-Ground Undervoltage Protection • Open-Drain Fault-Indicator Output • Open-LED and LED-Short Detection and Protection • Overtemperature Protection ● Adaptive Output-Voltage Optimization to Minimize Power Dissipation • Less than 2µA Shutdown Current ● Automotive Displays LED Backlights ● Automotive RCL, DRL, Front Position, and Fog Lights ● LCD TV and Desktop Display LED Backlights ● Architectural, Industrial, and Ambient Lighting Ordering Information PART TEMP RANGE PIN-PACKAGE MAX16813ATP+ -40°C to +125°C 20 TQFN-EP* MAX16813ATP/V+ -40°C to +125°C 20 TQFN-EP* MAX16813AUP+ -40°C to +125°C 20 TSSOP-EP* MAX16813AUP/V+ -40°C to +125°C 20 TSSOP-EP* +Denotes a lead Pb -free/RoHS-compliant package. *EP = Exposed pad. /V denotes an automotive qualified part. MAX16813 Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller and Battery Disconnect Absolute Maximum Ratings IN to +45V EN, PGATE to IN + 0.3V PGND to +0.3V LEDGND to +0.3V OUT_ to +45V VCC to SGND............. -0.3V to the lower of IN + 0.3V and +6V FLT, DIM, RSDT, OVP to SGND..............................-0.3V to +6V CS, NDRV, RT, COMP, SETI to SGND..... -0.3V to VCC + 0.3V NDRV Peak Current < NDRV Continuous OUT_ Continuous VCC Short-Circuit Continuous Power Dissipation TA = +70°C Note 1 20-Pin TQFN derate 25.6mW/°C above +70°C .......2051mW 20-Pin TSSOP derate 26.5mW/°C above +70°C .....2122mW Operating Temperature Range.......................... -40°C to +125°C Junction Storage Temperature Range............................. -65°C to +150°C Lead Temperature soldering, 10s .................................. +300°C Soldering Temperature 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. Package Thermal Characteristics Note 1 TQFN Junction-to-Ambient Thermal Resistance Junction-to-Case Thermal Resistance TSSOP Junction-to-Ambient Thermal Resistance Junction-to-Case Thermal Resistance Note 1 Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to Electrical Characteristics VIN = VEN = 12V, RRT = 12.25kΩ, RSETI = 15kΩ, CVCC = 1µF, NDRV = COMP = OUT_ = PGATE = unconnected, VRSDT = VDIM = VCC, VOVP = 0.7V, VCS = VLEDGND = VPGND = VSGND = 0V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. Note 2 PARAMETER SUPPLIES Operating Voltage Range Supply Current Standby Supply Current IN Undervoltage Lockout IN UVLO Hysteresis VCC REGULATOR Regulator Output Voltage Dropout Voltage Short-Circuit Current Limit VCC Undervoltage-Lockout Threshold VCC UVLO Hysteresis CONDITIONS VIN IIN IIN_Shdn VOVP = 1.266V, all channels on, VOUT_ = 0.5V VEN = 0V VIN rising VCC VCC_ILIM 6.5V < VIN < 10V, 1mA < ILOAD < 50mA 10V < VIN < 40V, 1mA < ILOAD < 10mA VIN - VCC, VIN = 4.75V, ILOAD = 50mA VCC shorted to SGND VCC rising MIN TYP MAX UNITS 200 500 Maxim Integrated 2 MAX16813 Initial release Corrected formula in Rectifier Diode Selection section Removed future product designations from Ordering Information table and changed package code for TSSOP package in Package Information table Updated the Benefits and Features section Updated TOC 11 and Short-LED Detection section, and added Setting RSDT section PAGES CHANGED 1 7, 16, 21 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values min and max limits shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. 2016 Maxim Integrated Products, Inc. 27 MAX16813 Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller and Battery Disconnect Maxim Integrated 28 MAX16813 Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller and Battery Disconnect Maxim Integrated 29

PDF Datasheet Preview

MAX16813

EVALUATION KIT AVAILABLE

Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller
and Battery Disconnect

The MAX16813 high-efficiency, high-brightness LED HB LED driver provides four integrated LED current-sink channels. An integrated current-mode switching controller drives a DC-DC converter that provides the necessary voltage to multiple strings of HB LEDs. The device accepts a wide 4.75V to 40V input voltage range and withstands direct automotive load-dump events. The wide input range allows powering HB LEDs for small- to medium-sized LCD displays in automotive and general lighting applications.

An internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. An integrated spread-spectrum mode helps reduce EMI. Current-mode control with programmable slope compensation provides fast response and simplifies loop compensation. An adaptive output-voltage control scheme minimizes power dissipation in the LED current-sink paths. The device has a separate p-channel drive PGATE pin that is used for output undervoltage protection. Whenever the output falls below the threshold, the external p-MOSFET is latched off, disconnecting the input source. Cycling the EN or the input supply is required to restart the converter. The external p-MOSFET is off when the EN pin is below 0.3V typ . The shutdown current is 1µA typ at an input voltage of 12V.

The device consists of four identical linear current-sink channels, adjustable from 20mA to 150mA with an accuracy of ±3% using a single external resistor. Multiple channels can be connected in parallel to achieve higher current per LED string. The device also features a unique pulsed dimming control through a logic input DIM , with minimum pulse width as low as 500ns. Protection features include output overvoltage, open-LED detection and protection, programmable shorted LED detection and protection, output undervoltage protection and detection, and overtemperature protection. The device operates over the -40°C to +125°C automotive temperature range. The MAX16813 is available in 20-pin 6.5mm x 4.4mm TSSOP and 20-pin 4mm x 4mm TQFN packages.

Benefits and Features
● 4-Channel Linear LED Current Sinks with Internal MOSFETs Independently Drive Multiple LED Strings
• Full-Scale LED Current Adjustable from 20mA to 150mA
• Drives 1 to 4 LED Strings
• 10000:1 PWM Dimming at 200Hz
● Flexible Current-Mode Architecture Supports a Wide Range of Applications While Minimizing Interference
• Boost or SEPIC Current-Mode DC-DC Controller
• 200kHz to 2MHz Programmable Switching

Frequency
• External Switching-Frequency Synchronization
• Spread-Spectrum Mode ● Protection Features Enhance Fault Detection and System Reliability
• Output-to-Ground Undervoltage Protection
• Open-Drain Fault-Indicator Output
• Open-LED and LED-Short Detection and

Protection
• Overtemperature Protection
● Adaptive Output-Voltage Optimization to Minimize Power Dissipation
• Less than 2µA Shutdown Current
● Automotive Displays LED Backlights ● Automotive RCL, DRL, Front Position, and Fog Lights ● LCD TV and Desktop Display LED Backlights ● Architectural, Industrial, and Ambient Lighting
Ordering Information

PART

TEMP RANGE PIN-PACKAGE

MAX16813ATP+
-40°C to +125°C 20 TQFN-EP*

MAX16813ATP/V+ -40°C to +125°C 20 TQFN-EP*

MAX16813AUP+
-40°C to +125°C 20 TSSOP-EP*

MAX16813AUP/V+ -40°C to +125°C 20 TSSOP-EP*
+Denotes a lead Pb -free/RoHS-compliant package. *EP = Exposed pad. /V denotes an automotive qualified part.

MAX16813

Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller
and Battery Disconnect

Absolute Maximum Ratings

IN to +45V EN, PGATE to IN + 0.3V PGND to +0.3V LEDGND to +0.3V OUT_ to +45V VCC to SGND............. -0.3V to the lower of IN + 0.3V and +6V FLT, DIM, RSDT, OVP to SGND..............................-0.3V to +6V CS, NDRV, RT, COMP, SETI to SGND..... -0.3V to VCC + 0.3V NDRV Peak Current < NDRV Continuous

OUT_ Continuous VCC Short-Circuit Continuous Power Dissipation TA = +70°C Note 1
20-Pin TQFN derate 25.6mW/°C above +70°C .......2051mW 20-Pin TSSOP derate 26.5mW/°C above +70°C .....2122mW Operating Temperature Range.......................... -40°C to +125°C Junction Storage Temperature Range............................. -65°C to +150°C Lead Temperature soldering, 10s .................................. +300°C Soldering Temperature

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.

Package Thermal Characteristics Note 1

TQFN Junction-to-Ambient Thermal Resistance Junction-to-Case Thermal Resistance

TSSOP Junction-to-Ambient Thermal Resistance Junction-to-Case Thermal Resistance

Note 1 Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to

Electrical Characteristics

VIN = VEN = 12V, RRT = 12.25kΩ, RSETI = 15kΩ, CVCC = 1µF, NDRV = COMP = OUT_ = PGATE = unconnected, VRSDT = VDIM = VCC, VOVP = 0.7V, VCS = VLEDGND = VPGND = VSGND = 0V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. Note 2

PARAMETER SUPPLIES Operating Voltage Range

Supply Current

Standby Supply Current IN Undervoltage Lockout IN UVLO Hysteresis VCC REGULATOR

Regulator Output Voltage

Dropout Voltage Short-Circuit Current Limit VCC Undervoltage-Lockout Threshold VCC UVLO Hysteresis

CONDITIONS

VIN IIN IIN_Shdn

VOVP = 1.266V, all channels on, VOUT_ = 0.5V

VEN = 0V

VIN rising

VCC VCC_ILIM
6.5V < VIN < 10V, 1mA < ILOAD < 50mA 10V < VIN < 40V, 1mA < ILOAD < 10mA VIN - VCC, VIN = 4.75V, ILOAD = 50mA VCC shorted to SGND

VCC rising

MIN TYP MAX UNITS
200 500

Maxim Integrated 2

MAX16813
Initial release Corrected formula in Rectifier Diode Selection section Removed future product designations from Ordering Information table and changed package code for TSSOP package in Package Information table Updated the Benefits and Features section Updated TOC 11 and Short-LED Detection section, and added Setting RSDT section

PAGES CHANGED
1 7, 16, 21
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values min and max limits shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. 2016 Maxim Integrated Products, Inc. 27

MAX16813

Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller
and Battery Disconnect

Maxim Integrated 28

MAX16813

Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller
and Battery Disconnect

Maxim Integrated 29

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Datasheet ID: MAX16813AUP/V+T 647250