MAX16802BEVKIT Maxim Integrated Products, MAX16802BEVKIT Datasheet

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MAX16802BEVKIT

Manufacturer Part Number
MAX16802BEVKIT
Description
EVAL KIT FOR MAX16802
Manufacturer
Maxim Integrated Products
Datasheets

Specifications of MAX16802BEVKIT

Current - Output / Channel
750mA
Outputs And Type
1, Non-Isolated
Voltage - Output
12V
Features
Dimmable
Voltage - Input
10.8 ~ 30V
Utilized Ic / Part
MAX16802B
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16801A/B/MAX16802A/B high-brightness (HB)
LED driver-control ICs contain all the circuitry required
for the design of wide-input-voltage-range LED drivers
for general lighting and display applications. The
MAX16801 is well suited for universal input (rectified
85VAC to 265VAC) LED drivers, while the MAX16802 is
intended for low-input-voltage (10.8VDC to 24VDC) LED
drivers.
When the LED current needs to be tightly regulated, an
additional on-board error amplifier with 1% accurate ref-
erence can be utilized. A wide dimming range can be
implemented by using low-frequency PWM dimming.
The MAX16801/MAX16802 feature an input undervoltage
lockout (UVLO) for programming the input-supply start
voltage, and to ensure proper operation during brownout
conditions. The MAX16801 has an internal-bootstrap
undervoltage lockout circuit with a large hysteresis that
simplifies offline LED driver designs. The MAX16802 does
not have this internal bootstrap circuit and can be biased
directly from a +12V rail.
The 262kHz fixed switching frequency is internally
trimmed, allowing for optimization of the magnetic and fil-
ter components, resulting in a compact, cost-effective
LED driver. The MAX16801A/MAX16802A are offered with
50% maximum duty cycle. The MAX16801B/MAX16802B
are offered with 75% maximum duty cycle. These devices
are available in an 8-pin µMAX
over the -40°C to +85°C temperature range.
19-3880; Rev 2; 1/10
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Warning: The MAX16801/MAX16802 are designed to work with high voltages. Exercise caution.
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.
Offline and DC-DC LED
Drivers
RGB Back Light for LCD
TVs and Monitors
________________________________________________________________ Maxim Integrated Products
General Description
PWM
10.8VDC TO 24VDC
ENABLE
Offline and DC-DC PWM Controllers for
Commercial and
Industrial Lighting
Decorative and
Architectural Lighting
®
GND
package and operate
UVLO/EN
DIM/FB
COMP
CS
Applications
MAX16802B
NDRV
GND
V
CC
IN
High-Brightness LED Drivers
C1
♦ Suitable for Buck, Boost, Flyback, SEPIC, and
♦ Up to 50W or Higher Output Power
♦ Universal Offline Input Voltage Range: Rectified
♦ IN Pin Directly Driven From 10.8VDC to 24VDC
♦ Internal Error Amplifier with 1% Accurate
♦ PWM or Linear Dimming
♦ Fixed Switching Frequency of 262kHz ±12%
♦ Thermal Shutdown
♦ Digital Soft-Start
♦ Programmable Input Startup Voltage
♦ Internal Bootstrap UVLO with Large Hysteresis
♦ 45µA (typ) Startup Supply Current, 1.4mA (typ)
♦ 50% (MAX16801A/MAX16802A) or 75%
♦ Available in a Tiny 8-Pin µMAX Package
+Denotes lead-free package.
MAX16801AEUA+
MAX16801BEUA+
MAX16802AEUA+
MAX16802BEUA+
C2
Other Topologies
85VAC to 265VAC (MAX16801)
Input (MAX16802)
Reference for Precise LED Current Regulation
(MAX16801)
Operating Supply Current
(MAX16801B/MAX16802B) Maximum Duty Cycle
PART
L1
Q1
R1
Typical Operating Circuit
D1
Ordering Information
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
C3
RANGE
TEMP
LEDs
Features
PIN-
PACKAGE
8 µMAX
8 µMAX
8 µMAX
8 µMAX
1

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MAX16802BEVKIT Summary of contents

Page 1

... Drivers Industrial Lighting RGB Back Light for LCD Decorative and TVs and Monitors Architectural Lighting µMAX is a registered trademark of Maxim Integrated Products, Inc. 10.8VDC TO 24VDC ENABLE PWM GND Warning: The MAX16801/MAX16802 are designed to work with high voltages. Exercise caution. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’ ...

Page 2

Offline and DC-DC PWM Controllers for High-Brightness LED Drivers ABSOLUTE MAXIMUM RATINGS IN to GND .......................................................................... V to GND CC ...................................................................... DIM/FB, COMP, UVLO GND..........................-0.3V to +6V NDRV to GND.............................................-0. Continuous Power Dissipation (T = +70°C) ...

Page 3

Offline and DC-DC PWM Controllers for ELECTRICAL CHARACTERISTICS (continued +12V (MAX16801: V must first be brought up to +23.6V for startup), 10nF bypass capacitors at IN and +1.4V +1.0V, COMP = ...

Page 4

Offline and DC-DC PWM Controllers for High-Brightness LED Drivers (V = +1.4V +1V, COMP = unconnected, V UVLO/EN FB BOOTSTRAP UVLO WAKE-UP LEVEL vs. TEMPERATURE 21.60 MAX16801 V RISING IN 21.55 21.50 21.45 21.40 21.35 21.30 -40 -20 ...

Page 5

Offline and DC-DC PWM Controllers for (V = +1.4V +1V, COMP = unconnected, V UVLO/EN FB CURRENT-SENSE THRESHOLD 30 TOTAL NUMBER OF DEVICES = 200 260 270 280 290 300 310 CURRENT-SENSE ...

Page 6

Offline and DC-DC PWM Controllers for High-Brightness LED Drivers (V = +1.4V +1V, COMP = unconnected, V UVLO/EN FB NDRV OUTPUT IMPEDANCE vs. TEMPERATURE 5 24V IN 4.8 SOURCING 20mA 4.6 4.4 4.2 4.0 3.8 3.6 ...

Page 7

Offline and DC-DC PWM Controllers for When in the bootstrapped mode with a transformer (Figure 5), the circuit is protected against most output short-circuit faults when the tertiary voltage drops below +10V, causing the UVLO to turn off the gate ...

Page 8

Offline and DC-DC PWM Controllers for High-Brightness LED Drivers VDC R D (a) Figure 2. (a) Resistor-Zener and (b) Transistor-Zener-Resistor Bias Arrangements in applications with higher input DC voltages by imple- menting resistor-Zener bias (Figure 2a) or transistor- Zener-resistor bias ...

Page 9

Offline and DC-DC PWM Controllers for 0 100ms/div Figure 3. V and V During Startup when Using the IN CC MAX16801 in Bootstrapped Mode the wake-up level of +23.6V. Once V bootstrap UVLO threshold, NDRV begins switching the MOSFET and ...

Page 10

Offline and DC-DC PWM Controllers for High-Brightness LED Drivers Applications Information Startup Time Considerations for High- Brightness LED Drivers Using MAX16801 The IN bypass capacitor C1 supplies current immedi- ately after wake-up (Figure 5). The size of C1 and the ...

Page 11

Offline and DC-DC PWM Controllers for Application Circuits Figure 5 shows an offline application LED dri- ver using the MAX16801. The use of transformer T1 allows significant design flexibility. Use the internal error amplifier for a very ...

Page 12

Offline and DC-DC PWM Controllers for High-Brightness LED Drivers V IN 10.8V TO 24V DIMMING GND Figure 6. MAX16802 Flyback HB LED Driver with Dimming Capability, 10.8V to 24V Input Voltage Range V IN 10.8V TO 24V ...

Page 13

Offline and DC-DC PWM Controllers for R1 C3 BRIDGE UNIVERSAL RECTIFIER AC INPUT C1 C2 *PWM *WARNING: PWM DIMMING SIGNAL IS SHOWN AT THE PRIMARY SIDE. USE AN OPTOCOUPLER FOR SAFETY ISOLATION OF THE PWM SIGNAL. Figure 8. Universal AC ...

Page 14

Offline and DC-DC PWM Controllers for High-Brightness LED Drivers IN IN CLAMP 26.1V DIGITAL SOFT-START UVLO COMP FB ERROR AMP CPWM V CS OPWM 1.38V V CS 0.3V Selector Guide STARTUP BOOTSTRAP PART VOLTAGE UVLO (V) MAX16801A Yes 22 MAX16801B ...

Page 15

Offline and DC-DC PWM Controllers for For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix ...

Page 16

... 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products Revision History DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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