LP55231 datasheet(8/59 Pages) TI2

部件名	LP55231

功能描述	LP55231 Nine-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump - WQFN

PDF	59 Pages

Scroll/Zoom	100%

制造商	TI2 [Texas Instruments]

网页	https://www.ti.com

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8 / 59 page

LP55231

SNOSCR5D – MARCH 2013 – REVISED DECEMBER 2016

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6.12 Typical Characteristics

Unless otherwise specified: VDD = 3.6 V, CIN = COUT = 1 µF, C1 = C2 = 0.47 µF, TA = 25°C. CIN, COUT, C1, C2: Low-ESR

surface-mount ceramic capacitors (MLCCs) used in setting electrical characteristics.

Figure 3. Charge Pump 1.5× Efficiency vs Load Current

Figure 4. Output Voltage of the Charge Pump (1.5×) as a

Function of Load Current at Four Input Voltage Levels

6 × 1-mA Load (6 Nichia NSCW100 WLEDs On D1 To D6)

Figure 5. Gain Change Hysteresis Loop at Factory Settings

Load: 6 × Nichia NSCW100 WLEDs On D1 To D6 at 100% PWM

Figure 6. Effect of Adaptive Hysteresis on the Width of the

Hysteresis Loop

17.5-mA Current

Figure 7. LED Current Matching Distribution

17.5-mA Current

Figure 8. LED Current Accuracy Distribution

LP55231 数据表(PDF) 8 Page - Texas Instruments