SP6651AEU-L Exar Corporation, SP6651AEU-L Datasheet
SP6651AEU-L
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SP6651AEU-L Summary of contents
Page 1
High Efficiency 800mA Synchronous Buck Regulator FEATURES DFN Package (3mm x 3mm) Ultra-low 20µA Quiescent Current 98% Efficiency Possible 800mA Output Current 2.7V to 5.5V Input Voltage Range Output Adjustable Down to 1.0V No External FET’s Required 1.25A Inductor ...
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PV ,V .............................................................................................. All other pins .............................................................. -0. current ........................................................................ 2A IN GND Storage Temperature .................................................. -65 °C to 150 °C Operating Temperature ................................................. -40°C to +85°C Lead Temperature (Soldering, ...
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PIN NUMBER PIN NAME BLON OUT 8 GND 9 P GND Shutdown. All internal circuitry is disabled and the ...
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Refer to the typical application schematic, T 100 1.0 10.0 ILoad (mA) Figure 1. Efficiency vs Load 3.3V OUT 3.40 3.35 3.30 3.25 3.20 0 200 400 600 ILoad ...
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TYPICAL PERFORMANCE CHARACTERISTICS: Continued Refer to the typical application schematic, T 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 3.6 3.9 4.2 4.5 4.8 Vin (V) Figure =3. OUT 3.5 3.0 2.5 ...
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TYPICAL PERFORMANCE CHARACTERISTICS: Continued Refer to the typical application schematic, T Figure 13. V Start up, I =0.6A OUT OUT Figure 15. Load Step, I =0.4A to 0.8A, V OUT Figure 17. Start up from SHDN, I =0.6A, ...
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The SP6651A is a high efficiency synchronous buck regulator with an input voltage range of +2.7V to +5.5Vand an output that is adjustable between +1.0V and V . The SP6651A features IN a unique on-time control loop that runs in ...
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RESET is held low until V regulation. Once RESET occurs T is reset, and the T one-shot is triggered to OFF blank the loop comparator from starting a new charge cycle for a minimum period. This blank- ing period ...
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K /L, more than the load ON current demands. The converter goes standard pulse frequency modulation (PFM) mode where the switching frequency is propor- tional to the load current. Low Dropout and Load ...
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This circuit along with the on-timer puts the converter into PFM mode and improves light load efficiency when the load current is less than half the inductor ripple current ...
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Other inductor parameters are important: the in- ductor current rating and the DC resistance. When the current ...
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Inductance Manufacturer/Part No. (µH) 10 Sumida CDRH5D28-100 10 TDK RLF5018T-100MR94 10 Coilcraft DO1608C-103 10 Coilcraft LPO6013-103 6.8 Sumida CDRH5D28-6R8 6.8 TDK RLF5018T-6R8M1R1 6.8 Coilcraft DO1608C-682 6.8 Coilcraft LPO6013-103 Capacitance Manufacturer/Part No. (µF) 22 TDK C3216X5R0J226M 22 SANYO 6APA22M 47 TDK ...
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SP6651A high frequency converter and the other active components on the board, some rules should be followed. Refer to the typical application schematic on page 1 and the sample PCB layout shown in the following figures to illustrate ...
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Pin #1 indentifier must be indicated within this shaded area (D/2 * E1/2) 10-PIN MSOP Dimensions in (mm) JEDEC MO-187 (BA) Variation MIN NOM MAX 0.00 A2 0.75 0.85 b ...
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Top View D D/2 Pin 1 identifier to be located within this shaded area. Terminal #1 Index Area (D/2 * E/2) 10 Pin DFN DIMENSIONS (JEDEC MO-229, in VEED-5 VARIATION) (mm) SYMBOL MIN NOM MAX A 0.80 0.90 A1 0.02 ...
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... SP6651AER.............6651AER......................... -40°C to +85°C ..................................................... 10 Pin DFN SP6651AER/TR.......6651AER......................... -40°C to +85°C ..................................................... 10 Pin DFN Available in lead free packaging. To order add "-L" suffix to part number. Example: SP6651AEU/TR = standard; SP6651AEU-L/TR = lead free /TR = Tape and Reel Pack quantity is 2500 for MSOP and 3,000 for DFN. ...