MIC2846A-PGYMT TR Micrel Inc, MIC2846A-PGYMT TR Datasheet
MIC2846A-PGYMT TR
Specifications of MIC2846A-PGYMT TR
Related parts for MIC2846A-PGYMT TR
MIC2846A-PGYMT TR Summary of contents
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... Both LDOs can be turned off to draw virtually no current. The MIC2846A is available in the 2.5mm x 2.5mm 14-pin ® Thin MLF leadless package with a junction temperature range of -40° ...
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... Micrel Inc. Typical Application April 2010 Digital LCD Display Backlight with 6 WLEDs and Camera Module 6 Digital High Current Flash Driver 2 MIC2846A M9999-041210-D ...
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... Mark Code MIC2846A-MFYMT YPMF MIC2846A-MGYMT YPMG MIC2846A-PGYMT YPPG MIC2846A-PPYMT YPPP MIC2846A-SCYMT YPSC Note: ® 1. Thin MLF ▲ = Pin 1 identifier. ® 2. Thin MLF is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is halogen free. 3. Contact Micrel for other output voltages. Pin Configuration ...
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... Typ 1.5 1.5 40 1.4 0.01 1.2 0.01 1260 100 420 2 100 5 140 = 100μ 25°C, bold values indicate –40°C ≤ J Min Typ -2 -3 0.02 7 150 35 0.05 MIC2846A ) .............. EN2 ..............89°C/W JA ≤ 125°C; J Max Units % % µA 0 µA µs 160 µs 500 µ ...
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... OUT OUT Frequency 10Hz to 100kHz Logic Low Logic High 1.2V EN1 EN1 C = 1µF; 90 OUT OUT (ambient temperature D(max) J(max) 5 MIC2846A Min Typ Max 65 175 300 500 200 0.2 1.2 0. 100 ) / θ – Exceeding the maximum allowable power M9999-041210-D Units ...
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... Micrel Inc. Typical Characteristics (WLED Driver) April 2010 6 MIC2846A M9999-041210-D ...
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... Micrel Inc. Typical Characteristics (LDO) April 2010 7 MIC2846A M9999-041210-D ...
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... Micrel Inc. Functional Characteristics (WLED Driver) April 2010 8 MIC2846A M9999-041210-D ...
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... Micrel Inc. Functional Characteristics (LDO) April 2010 9 MIC2846A M9999-041210-D ...
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... Both linear regulators are stable with just 1µF of output capacitance. Block Diagram As shown in Figure 1, the MIC2846A consists of two LDOs with six current mirrors set to copy a master current determined designated control block for enabling and dimming of the LEDs ...
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... LDO2. Do not leave these control pins floating. DC The DC pin is used to enable and control dimming of the linear drivers on the MIC2846A. See the MIC2846A Digital Dimming Interface in the Application Information section for details. Pulling the DC pin low for more than 1260μs puts the MIC2846A into a low I The DC pin cannot be left floating ...
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... WLEDs such as those used in flash or torch 1 applications. 1.17 1.33 Digital Dimming 1.58 The MIC2846A utilizes an internal dynamic pulse width 1.83 to generate an average duty cycle for each brightness 2.08 level. By varying the duty cycle the average current 100 2.33 PEAK achieves 49 logarithmically spaced brightness levels ...
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... MIC2846A prior to shutdown will be erased. Count Up Mode/Count Down Mode . Refer to SET The mode of MIC2846A can be in either Count Up Mode or Count Down Mode. The Count Down/Up Modes determine what the falling edges of the programming pulses will do to the brightness. In Count Up Mode, subsequent falling edges will increase brightness while in Count Down Mode, subsequent falling edges will decrease brightness ...
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... Micrel Inc. Count Up Mode until its mode is changed to Count Down Mode or by disabling the MIC2846A to reset the mode back to default. Figure 8. Mode Change to Count Up To change the mode back to Count Down Mode, pull the DC pin low for a period equal to t 500µs), shown in Figure 9. Now the internal circuitry will remain in Count Down Mode until changed to Count Up as described previously ...
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... Figure 16 shows the correct presetting sequence to set the MIC2846A brightness to level 39 prior to start up. Notice that when using the presetting feature the first programming pulse is not ignored. This is because the counter’s default mode is Count Down and a Mode Change cannot be performed in the presetting mode ...
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... Output Capacitor The MIC2846A LDOs require an output capacitor of at least 1µF or greater to maintain stability, however, the output capacitor can be increased to 2.2µF to reduce output noise without increasing package size. The design is optimized for use with low-ESR ceramic chip capacitors ...
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... Micrel Inc. MIC2846A Typical Application Circuit Bill of Materials Item Part Number C1608X5R0J105K 06036D105KAT2A C1, C2, C3 GRM188R60J105KE19D VJ0603G225KXYAT SWTS1007 D1 – D6 99-116UNC R1 CRCW060320K5F5EA R2 CRCW06032003FKEA U1 MIC2846A-xxYMT Notes: 1. TDK: www.tdk.com 2. AVX: www.avx.com 3. Murata: www.murata.com 4. Vishay: www.vishay.com 5. Seoul Semiconductor: www.seoulsemicon.com 6. EverLight: www.everlight.com 7. Micrel, Inc.: www.micrel.com April 2010 ...
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... Micrel Inc. PCB Layout Recommendations (Fixed) April 2010 Top Layer Bottom Layer 18 MIC2846A M9999-041210-D ...
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... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully April 2010 14-Pin (2.5mm x 2.5mm) Thin MLF indemnify Micrel for any damages resulting from such use or sale. © 2009 Micrel, Incorporated. 19 ® (MT) M9999-041210-D MIC2846A ...