MAX16820EVKIT+ Maxim Integrated Products, MAX16820EVKIT+ Datasheet

no-image

MAX16820EVKIT+

Manufacturer Part Number
MAX16820EVKIT+
Description
EVAL KIT FOR MAX16820
Manufacturer
Maxim Integrated Products
Datasheets

Specifications of MAX16820EVKIT+

Current - Output / Channel
1A
Outputs And Type
1, Non-Isolated
Voltage - Output
20V
Features
Dimmable
Voltage - Input
5 ~ 28V
Utilized Ic / Part
MAX16820
Core Chip
MAX16820
No. Of Outputs
1
Output Current
1A
Dimming Control Type
PWM
Development Tool Type
Hardware - Eval/Demo Board
Peak Reflow Compatible (260 C)
Yes
Rohs Compliant
Yes
Leaded Process Compatible
Yes
Mcu Supported Families
MAX16820
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16819/MAX16820, step-down constant-current
high-brightness LED (HB LED) drivers provide a cost-
effective solution for automotive interior/exterior lighting,
architectural and ambient lighting, LED bulbs such as
MR16 and other LED illumination applications.
The MAX16819/MAX16820 operate from a 4.5V to 28V
input voltage range and feature a 5V/10mA on-board
regulator. A high-side current-sense resistor adjusts the
output current and a dedicated PWM input (DIM)
enables a wide range of pulsed dimming.
The MAX16819/MAX16820 are well suited for applica-
tions requiring a wide input voltage range. The high-side
current-sensing and an integrated current-setting circuit-
ry minimize the number of external components while
delivering an LED current with ±5% accuracy. A hys-
teretic control algorithm ensures excellent input-supply
rejection and fast response during load transients and
PWM dimming. The MAX16819 features a 30% inductor
current ripple and the MAX16820 features a 10% current
ripple. These devices operate up to 2MHz switching fre-
quency, thus allowing for small component size.
The MAX16819/MAX16820 operate over the -40°C to
+125°C automotive temperature range and are avail-
able in 3mm x 3mm x 0.8mm, 6-pin TDFN packages.
19-0706; Rev 1; 3/07
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
High-Side Current Sense and 5000:1 Dimming
Architectural, Industrial, and Ambient Lighting
Automotive RCL, DRL, and Fog Lights
MR16 and Other LED Bulbs
Indicators and Emergency Lighting
TOP VIEW
________________________________________________________________ Maxim Integrated Products
2MHz High-Brightness LED Drivers with
+
General Description
6
1
MAX16819
MAX16820
Pin Configuration
TDFN
5
2
Applications
4
3
o High-Side Current Sense
o Dedicated Dimming Control Input
o 20kHz Maximum Dimming Frequency
o Hysteretic Control: No Compensation
o Up to 2MHz Switching Frequency
o ±5% LED Current Accuracy
o Adjustable Constant LED Current
o 4.5V to 28V Input Voltage Range
o Over 25W Output Power
o 5V, 10mA On-Board Regulator
o -40°C to +125°C Operating Temperature Range
Note: All devices are specified over the -40°C to +125°C oper-
ating temperature range.
+ Denotes lead-free package.
* EP = Exposed paddle.
MAX16819ATT+T
MAX16820ATT+T
V
IN
C
IN
PART
Typical Operating Circuit
R
SENSE
IN
CSN
DIM
6 TDFN–EP*
6 TDFN-EP*
PIN-PACKAGE
Ordering Information
MAX16819
MAX16820
GND
DRV
V
CC
PKG CODE
T633-2
T633-2
C
VCC
Features
L
MARK
+ATB
+ATC
TOP
1

Related parts for MAX16820EVKIT+

MAX16820EVKIT+ Summary of contents

Page 1

... MAX16819 MAX16820 + 1 2 TDFN ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. o High-Side Current Sense o Dedicated Dimming Control Input o 20kHz Maximum Dimming Frequency o Hysteretic Control: No Compensation 2MHz Switching Frequency o ± ...

Page 2

High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming ABSOLUTE MAXIMUM RATINGS IN, CSN, DIM to GND .............................................-0.3V to +30V V , DRV to GND ....................................................-0.3V to +6V CC CSN to IN...............................................................-0.3V to +0.3V Maximum Current into Any ...

Page 3

High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming ELECTRICAL CHARACTERISTICS (continued 12V 1µ DIM IN VCC T = +25°C.) (Note 1) A PARAMETER SYMBOL GATE DRIVER Gate ...

Page 4

High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming ( 12V 1µ DIM VCC SENSE noted.) EFFICIENCY vs 100 L = 47µH 95 LED ...

Page 5

High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming ( 12V 1µ DIM VCC SENSE noted.) PWM DIMMING AT 200Hz (1% DUTY CYCLE) MAX16819 toc09 V = 12V 47µH, ...

Page 6

High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming PIN NAME 1 IN Positive Supply Voltage Input. Bypass with a 1µF or higher value capacitor to GND. 2 CSN Current-Sense Input Logic-Level Dimming Input. Drive DIM low to ...

Page 7

High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming Undervoltage Lockout (UVLO) The MAX16819/MAX16820 include a 4.5V undervoltage lockout (UVLO) with 500mV hysteresis. When V below 4.5V, DRV goes low, turning off the external n-chan- nel MOSFET. DRV ...

Page 8

High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming MOSFET Selection The MAX16819/MAX16820’s gate driver is capable of sourcing 0.5A and sinking 1A of current. MOSFET selec- tion is based on the maximum input operating voltage V , ...

Page 9

High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) _______________________________________________________________________________________ Package Information 9 ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products ...

Related keywords