Product Summary

The MAX8595XETA+T is a High-Efficiency, 36V Step-Up Converter. It drives up to nine white LEDs with constant current and high efficiency to provide LCD backlighting in cell phones, PDAs, and other handheld devices. The series connection allows the LED currents to be identical for uniform brightness and minimizes the number of traces to the LEDs. The MAX8595XETA+T regulates constant LED current over the entire temperature range. The MAX8596X features an ambient-temperature derating function to avoid overdriving the white LEDs during high ambient temperatures, enabling higher drive current below +42u A single Dual Mode input of the MAX8595XETA+T provides a simple means of brightness adjustment and on/off control. Fast 1MHz current-mode PWM operation allows for small input and output capacitors and a small inductor while minimizing ripple on the input supply/battery. Soft-start eliminates inrush current during startup.

Parametrics

MAX8595XETA+T absolute maximum ratings: (1)IN to GND: -0.3V to +6V; (2)PGND to GND: -0.3V to +0.3V; (3)LX, OUT to GND: -0.3V to +40V; (4)CTRL to GND: -0.3V to the lower of +6V or (VIN + 2V); (5)COMP, CS to GND: -0.3V to (VIN + 0.3V); (6)ILX: 1.0ARMS.

Features

MAX8595XETA+T features: (1)Up to Nine LEDs at 25mA; (2)Temperature Derating Function to Allow Fewer; (3)LEDs for Same Light (MAX8596X); (4)86% Efficiency (PLEDs / PIN); (5)1.7% Current-Regulation Accuracy; (6)Output Overvoltage Protection; (7)Flexible Dimming Control; (8)1MHz PWM Switching Frequency; (9)0.1uF Output Capacitor; (10)12mVP-P Low Input Ripple; (11)Soft-Start Eliminates Inrush Current; (12)2.6V to 5.5V Input Range; (13)0.3uA Shutdown Current; (14)Pin Compatible with the MAX1561 and MAX1599; (15)TDFN 3mm x 3mm x 0.8mm Package with; (16)Exposed Paddle.

Diagrams

MAX8595XETA+T block diagram

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