MAX25611C LED Controller Datasheet

MAX25611C Datasheet, PDF, Equivalent


Part Number

MAX25611C

Description

Automotive High-Voltage HB LED Controller

Manufacture

Maxim Integrated

Total Page 25 Pages
Datasheet
Download MAX25611C Datasheet


MAX25611C
EVALUATION KIT AVAILABLE
Click here for production status of specific part numbers.
MAX25611A/MAX25611B/
MAX25611C/MAX25611D
Automotive High-Voltage HB LED Controller
General Description
The MAX25611A/MAX25611B/MAX25611C/MAX25611D
are single-channel HBLED drivers for automo-
tive front light applications such as high beam,
low beam, daytime running light (DRL), turn
indicator, fog light, and other LED lights. It can take an
input voltage from 5V to 36V and can drive a string of
LEDs with a maximum output voltage of 65V.
The MAX25611A/B/C/D sense output current at
the high side of the LED string. High-side current
sensing is required to protect for shorts from the output
to the ground or battery input. It is also the most flex-
ible scheme for driving LEDs, allowing boost, high-side
buck, SEPIC mode, or buck-boost mode configura-
tions. The PWM input provides LED dimming ratios of
up to 5000:1, and the REFI input provides additional
analog dimming capability in the MAX25611A/B/C/D.
The MAX25611A/B/C/D have built-in spread-spectrum
modulation for improved electromagnetic compat-
ibility performance. The MAX25611A/B/C/D can also
be used in zeta and Cuk converter configurations if it is
necessary in some applications.
The MAX25611A/B/C/D are available in a space-saving
12-pin SWTQFN-EP package. They are specified to oper-
ate over the -40°C to +125°C automotive temperature
range. The switching frequency is internally set at 350kHz
for the MAX25611A/MAX25611C and 2.2MHz for the
MAX25611B/MAX25611D.
Applications
Automotive Exterior Lighting
High Beam/Low Beam/Signal/Position Lights
Daytime Running Lights (DRLs)
Fog Lights and Adaptive Front-Light Assemblies
Head-Up Displays
Commercial, Industrial, and Architectural Lighting
Benefits and Features
Automotive Ready: AEC-Q100 Qualified
Integration Minimizes BOM for High-Brightness
LED Driver
• Integrated pMOS Dimming FET Gate Driver Allows
Single-Wire Connection to LED String
• PWM, Analog-to-PWM and Analog Dimming
Integrated High-Side, Current-Sense Amplifier
• 12-Pin SWTQFN-EP Package
Flexible Application Configurations
• +5V to +36V Wide Input Voltage Range with a
Maximum +65V Boost Output
• Boost, Buck-Boost, High-Side Buck, SEPIC, Zeta,
and Cuk Single-Channel LED Drivers
Protection Features and Wide Temperature Range
Increase System Reliability
• Short-Circuit, Overvoltage, and Thermal Protection
• -40°C to +125°C Operating Temperature Range
Ordering Information appears at end of data sheet.
Simplified Application Circuit
19-100429; Rev 3; 8/19

MAX25611C
MAX25611A/MAX25611B/
MAX25611C/MAX25611D
Automotive High-Voltage HB LED Controller
Absolute Maximum Ratings
IN to GND (MAX25611A/B)....................................-0.3V to +40V
IN to GND (MAX25611C/D)...................................-0.3V to +52V
ISENSEP, ISENSEN, DIMOUT to GND.................-0.3V to +70V
DIMOUT to ISENSEP...............................................-6V to +0.3V
ISENSEP to ISENSEN..........................................-0.3V to +0.6V
VCC to GND.............................................................-0.3V to +6V
NDRV to GND..............................................-0.3V to VCC + 0.3V
PWMDIM, REFI, OVP to GND.................................-0.3V to +6V
COMP, CS to GND.......................................-0.3V to VCC + 0.3V
Continuous Current on IN.................................................100mA
Peak Current on NDRV..........................................................±1A
Continuous Current on NDRV...........................................+50mA
Short-Circuit Duration on VCC....................................Continuous
Continuous Power Dissipation (TA = +70°C)
Multilayer Board
TQFN (derate 25mW/°C above +70°C)......................1951mW
TSSOP (derate 10mW/°C above +70°C)................796.80mW
Operating Temperature Range.......................... -40°C to +125°C
Junction Temperature.......................................................+150°C
Soldering Temperature (reflow)........................................+260°C
Lead Temperature (soldering, 10s).................................. +300ºC
Storage Temperature Range............................. -65°C to +150°C
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 Information
12-Pin, SWTQFN-EP
Package Code
Outline Number
Land Pattern Number
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
14-Pin, TSSOP
T1244Y+4C
21-100312
90-0068
59.3°C/W
6°C/W
24.4°C/W
41°C/W
Package Code
Outline Number
Land Pattern Number
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
U14+5C
21-0066
110°C/W
30°C/W
100.4°C/W
30°C/W
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
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 www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated 2


Features EVALUATION KIT AVAILABLE Click here for production status of specific part num bers. MAX25611A/MAX25611B/ MAX25611C/M AX25611D Automotive High-Voltage HB LE D Controller General Description The M AX25611A/MAX25611B/MAX25611C/MAX25611D are single-channel HBLED drivers for au tomotive front light applications such as high beam, low beam, daytime running light (DRL), turn indicator, fog light , and other LED lights. It can take an input voltage from 5V to 36V and can dr ive a string of LEDs with a maximum out put voltage of 65V. The MAX25611A/B/C/D sense output current at the high side of the LED string. High-side current se nsing is required to protect for shorts from the output to the ground or batte ry input. It is also the most flexible scheme for driving LEDs, allowing boost , high-side buck, SEPIC mode, or buck-b oost mode configurations. The PWM input provides LED dimming ratios of up to 5 000:1, and the REFI input provides addi tional analog dimming capability in the MAX25611A/B/C/D. The MA.
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