MAX16801BEUA+ Maxim Integrated Products, MAX16801BEUA+ Datasheet
MAX16801BEUA+
Specifications of MAX16801BEUA+
Related parts for MAX16801BEUA+
MAX16801BEUA+ Summary of contents
Page 1
... Internal Bootstrap UVLO with Large Hysteresis (MAX16801) ♦ 45µA (typ) Startup Supply Current, 1.4mA (typ) Operating Supply Current ♦ 50% (MAX16801A/MAX16802A) or 75% (MAX16801B/MAX16802B) Maximum Duty Cycle ♦ Available in a Tiny 8-Pin µMAX Package package and operate Applications MAX16801AEUA+ MAX16801BEUA+ MAX16802AEUA+ MAX16802BEUA+ +Denotes lead-free package. UVLO/EN IN DIM/ MAX16802B ...
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 ...