See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

YFQ | 20

Temp:

I (-40 to 85)

ECO Plan:

Green (RoHS & no Sb/Br)

LM3633YFQR


Complete Lighting Power Solution for Smartphone Handsets

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Qty.Price
1 - 9 $ 1.96
10 - 24 $ 1.75
25 - 99 $ 1.58
100 - 249 $ 1.44
250 - 499 $ 1.30
500 - 749 $ 1.06
750 - 999 $ 0.86
1000 - 9999 $ 0.70

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Texas Instruments LM3633YFQR

The LM3633 11-bit LED driver provides high-performance backlight dimming for 1, 2, or 3 parallel high-voltage LED strings while delivering up to 90% efficiency. The boost converter with integrated 1-A, 40-V MOSFET automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.

The LM3633 is a complete power source for backlight, keypad, and indicator LEDs in smartphone handsets. The high-voltage inductive boost converter provides the power for three parallel LED strings (HVLED1, HVLED2 and HVLED3). The integrated charge pump provides the bias for the six low-voltage indicator LEDs (LVLED1-LVLED6). All low-voltage current sinks can have a programmable pattern modulated onto their output current for a wide variety of blinking patterns.

An additional feature is a Pulse Width Modulation (PWM) control input for content adjustable backlight control, which can be used to control any high-voltage current sink.

The LM3633 is fully programmable via an I2C-compatible interface. The device operates over a 2.7-V to 5.5-V input voltage range and a −40°C to 85°C temperature range.

For all available packages, see the orderable addendum at the end of the datasheet. View datasheet
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