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 applications
requiring a wide input voltage range. The high-side
current-sensing and an integrated current-setting circuitry
minimize the number of external components while
delivering an LED current with ±5% accuracy. A hysteretic
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 frequency,
thus allowing for small component size.
The MAX16819/MAX16820 operate over the -40°C to
+125°C automotive temperature range and are available
in 3mm x 3mm x 0.8mm, 6-pin TDFN packages.
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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