LDS8865002-T2-250 IXYS, LDS8865002-T2-250 Datasheet
LDS8865002-T2-250
Specifications of LDS8865002-T2-250
LDS8865-002-T2-2
LDS8865-002-T2-2
LDS8865002-T2-25
LDS8865002-T2-25-2
LDS8865002-T2-25-2
LDS8865002-T2-250-2
Related parts for LDS8865002-T2-250
LDS8865002-T2-250 Summary of contents
Page 1
... DESCRIPTION The LDS8865 is a high efficiency multi-mode fractional charge pump with ultra low feedback TYPICAL APPLICATION CIRCUIT © 2009 IXYS Corp. Characteristics subject to change without notice voltage that can drive up to six LEDs. The ultra low dropout PowerLite Current Regulator increases device’ ...
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... PWM Pulse HIGH/LOW state PWM Low Time to Shutdown 1 Thermal Shutdown 1 Thermal Hysteresis Under Voltage Lockout (UVLO) 1 Threshold Over Voltage Protection 1 Sample test only © 2009 IXYS Corp. Characteristics subject to change without notice Rating Unit Vin + 0.7V V -65 to +160 °C -40 to +125 ° ...
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... PWM pins must be held low for more than 30 ms the charge pump output that is connected to OUT the LED anodes. A small 1 μ F ceramic bypass © 2009 IXYS Corp. Characteristics subject to change without notice Function capacitor is required between the V μ F ground near the device. IN GND is the ground reference for the charge pump ...
Page 4
... Power-Up in 1.5x Mode Ch1 – PWM, PWM2, Ch2 – Vout, Ch3 – Output current (100mA/div) Power-Down Delay (1x Mode) Ch1 – PWM, PWM2, Ch2 – Vout, Ch3 – Output current (100mA/div) © 2009 IXYS Corp. Characteristics subject to change without notice = 0.22 μ 1μ 25° ...
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... Ch3 – Output current (100mA/div) Switching Waveforms at 50kHz PWM mode Ch1 – PWM, PWM2, Ch2 – Vout, Ch3 – Output current (100mA/div) © 2009 IXYS Corp. Characteristics subject to change without notice Switching Waveforms in 2x Mode Ch1 – Vin (AC coupled), Ch2 – Vout (AC coupled), Ch3 – ...
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... Vd across PCR at every channel in ON state. If this voltage falls below 75 mV (typical) at any one channel, (channel with LED with highest forward © 2009 IXYS Corp. Characteristics subject to change without notice Figure 2. LDS8865 Functional Block Diagram voltage), the Mode Control Block changes charge pump mode to the next multiplication ratio ...
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... VPCR and minus voltage drop on charge pump output resistance Rcp at Iled current through N LEDs. Vf > CPM X Vin – Vd – Rcp x Iled x N; PWM duty Cycle = T 2. Timing Diagram is not to scale © 2009 IXYS Corp. Characteristics subject to change without notice with respect to the average LED current unlike conventional 1-wire LED current control methods. The LDS8865’ ...
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... A test current is placed in the channel to sense when the channel moves below V – 1.5 V. OUT Protection Mode The LDS8865has follow protection modes: © 2009 IXYS Corp. Characteristics subject to change without notice Figure 4. Application circuit with 5 LEDs 1. LED short and IN ...
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... It is recommended to minimize trace length to all four capacitors. A ground plane should cover the area under the driver IC as well as the bypass capacitors. Short connection to ground on © 2009 IXYS Corp. Characteristics subject to change without notice capacitors C use of multiple via. A copper area matching the TQFN exposed pad (TAB) must be connected to the ground plane underneath ...
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... L 0.325 0.375 m 0.150 typ n 0.225 typ Note: 1. All dimensions are in millimeters 2. Complies with JEDEC Standard MO-220 © 2009 IXYS Corp. Characteristics subject to change without notice MAX 0.80 0.05 0.228 0.30 3.05 1.75 3.05 1.75 0.425 10 Doc. No. 8865DS, Rev. N2.1 ...
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... The device used in the above example is a LDS8865 002–T2 ( 3x3 TQFN, Tape & Reel, 32/25/10.5 mA maximum current per LED bank 4) For additional package and temperature options, please contact your nearest IXYS Corp. Sales office. © 2009 IXYS Corp. Characteristics subject to change without notice ...
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... IXYS Corp. products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the IXYS Corp. product could create a situation where personal injury or death may occur. ...