MAX16801AEUA+ Maxim Integrated Products, MAX16801AEUA+ Datasheet - Page 11

• Manufacturer Part Number: MAX16801AEUA+
• Description: IC LED DRIVER HIGH BRIGHT 8-MSOP
• Manufacturer: Maxim Integrated Products
• Type: HBLED Driverr

Specifications of MAX16801AEUA+

• Constant Current: Yes
• Topology: Flyback, PWM, SEPIC, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Backlight
• Type - Secondary: High Brightness LED (HBLED), RGB
• Frequency: 230kHz ~ 290kHz
• Voltage - Supply: 85 V ~ 265 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 3A
• Internal Switch(s): No
• Low Level Output Current: 500 uA (Min)
• High Level Output Current: 500 uA (Min)
• Operating Supply Voltage: 10.8 V to 24 V
• Maximum Supply Current: 2.5 mA
• Maximum Power Dissipation: 362 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 5 shows an offline application of an HB LED dri-
ver using the MAX16801. The use of transformer T1
allows significant design flexibility. Use the internal
error amplifier for a very accurate LED current control.
Figure 6 shows a discontinuous flyback LED driver with
linear dimming capability. The total LED voltage can be
lower or higher than the input voltage.
Figure 7 shows a continuous-conduction-mode HB LED
buck driver with linear dimming and just a few external
components.
Figure 5. Offline, Nonisolated, Flyback LED Driver with Programmable Input-Supply Start Voltage
V
GND
SUPPLY
C1
R1
C2
______________________________________________________________________________________
R6
C3
Offline and DC-DC PWM Controllers for
Application Circuits
IN
V
COMP
DIM/FB
CC
MAX16801
R5
High-Brightness LED Drivers
UVLO/EN
Figure 8 shows an offline isolated flyback HB LED dri-
ver with low-frequency PWM using MAX16801. The
PWM signal needs to be inverted (see the Functional
Diagram). Transformer T1 provides full safety isolation
and operation from universal AC line (85VAC to
265VAC).
NDRV
GND
CS
R2
R3
D1
Q1
T1
R4
D2
C4
V
LEDs
R7
OUT
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