ADP5501 Analog Devices, ADP5501 Datasheet - Page 17

• Manufacturer Part Number: ADP5501
• Description: Programmable Current Backlight Driver with Ambient Light Sensor Input
• Manufacturer: Analog Devices

Specifications of ADP5501

• Vin Range: 2.7 to 5.5V
• Vout (v): 24 to 27
• Synchronous: No
• Package: 24-Lead LFCSP
• Led Configuration: Serial
• Topology: Inductive
• I2c Support: Yes
• Max Iout (ma): 30mA
• Brightness Control: I2C
• Switching Frequency: 1MHz
• Over Volt Protection (v): 24V

INTERRUPT OUTPUT (INT)
The ADP5501 can generate interrupts to an external processor via
its interrupt output, INT . INT is an active low, open-drain pin that
should be pulled up to VDDIO. INT can be asserted by one of
several internal blocks, as shown in
MAX
CURRENT
LEDx
LEDx_EN = 1
FADE-IN
ON TIME
Figure 39. LEDx Blink Mode with Fading
FADE-OUT FADE-IN
TIME
OFF
Figure 40
ON TIME
.
FADE-OUT
TIME
OFF
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RESET INPUT (RST)
The ADP5501 can be restored to a power-on reset state if the
RST pin is held low. RST contains a debounce circuit; therefore,
the pin must be held low for greater than 75 μs (typical) before a
reset occurs.
ALS COMPARATOR INTERRUPTS
OVERVOLTAGE INTERRUPT
Figure 40. INT Pin Drive
OR
ADP5501
INT
VDDIO