SP6648UEB Exar Corporation, SP6648UEB Datasheet
SP6648UEB
Specifications of SP6648UEB
Related parts for SP6648UEB
SP6648UEB Summary of contents
Page 1
Ultra-low Quiescent Current, High Efficiency Boost Regulator FEATURES ■ Ultra-low 12μA Quiescent Current ■ 400mA Output Current at 2.6V Input: 3.3V ■ 94% Efficiency from 2 Cell to 3.3V ■ Wide Input Operating Voltage: 0.85V to 4.5V ■ 3.3V Fixed ...
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LX, Vo LBON GND pin ................................ -0.3 to 6.0V BATT SHDN, LBI ........................................................... -0. Vo, GND, LX Current ....................................................................... 2A Reverse V Current .............................................................. 220mA BATT Forward V Current .............................................................. 500mA BATT Storage Temperature ...
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PIN NUMBER PIN NAME 1 V BATT 2 LBI 3 LBON 4 R LIM 5 SHDN GND 8 PGND OUT Date: 6/7/06 Rev B SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator DESCRIPTION ...
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V BATT INTERNAL BATT V BATT - c SHDN SDI 0.61V + n Ref IBIAS 1.25V REF SDI Block FB 0.61V + current current control reference Ipkset R LIM LBI - c 0.61V + ...
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At light loads (as shown in plot A in Figure 1) the charge cycle will last the maximum value for t : For a 1V battery this would be as follows 4.0Vμs / ...
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Refer to the Typical Application Circuit on page 1, T 100 0.1 1.0 10.0 100.0 Iload (mA) Efficiency vs. Load Current, V =3.3V OUT 3.400 3.380 3.360 3.340 3.320 3.300 3.280 3.260 ...
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Refer to the Typical Application Circuit on page 1, T 400 350 300 250 200 150 100 50 0 1.0 1.5 2.0 Vin (V) Maximum Resistive Load Current in Startup, V Inductor Current (0.2A/DIV) Output Ripple, V =2.6V, I =200mA, ...
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Refer to the Typical Application Circuit on page 1, T 2.0 1.5 1.0 0.5 0.0 0.9 1.2 1.5 1.8 2.1 2.4 Vin ( =3.3V OFF IN OUT Startup, V =2.6V, V =3.3V 100Ω ...
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Circuit Layout Printed circuit board layout is a critical part of a power supply design. Poor designs can result in excessive EMI on the feedback paths and on the ground planes with applications involving high switching frequencies and large peak ...
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Inductance Manufacturer/Part No. μ Sumida CDRH5D28-100 10 TDK RLF5018T-100MR94 10 Sumida CD43-100 22 Sumida CDRH5D28-220 22 TDK RLF5018T-220MR63 22 Sumida CD43-220 Capacitance Manufacturer Part No. μ Ω Kemet T494C476K010AS 47 Kemet T494V476K010AS 100 Sanyo ...
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V Programming OUT The SP6648 can be programmed as either a voltage source or a current source. To program the SP6648 as a voltage source, the SP6648 requires 2 feedback resistors R1 & R2, as shown in the SP6648EB evaluation ...
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SP6648LEDEB Evaluation Board with LumiLED High Brightness White LED For the high brightness LumiLED white LED application, the SP6648 is generally programmed as a current source. The bias resistor R to set the operating current of the white LED in ...
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V OUT V REF Plug in the LumiLED Brightness Control One approach to control LED brightness is to apply a PWM signal to the SHDN input of the SP6648. In this case, the output current will be equal to the ...
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TOP VIEW (L1 Pin #1 designator to be within this INDEX AREA (D/2 * E1/2) SYMBOL ø ...
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D D/2 E/2 Pin1 Designator to be within this TOP VIEW INDEX AREA (D/2 x E/2) INDEX AREA (D/2 x E/2) L 3x3 10 Pin DFN Dimensions in Millimeters: SYMBOL MIN A 0. 0.20 ø b ...
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Part Number Top Mark SP6648EU ................................ SP6648EU..................-40°C to +85°C ...................................... 10 Pin MSOP SP6648EU/TR .......................... SP6648EU..................-40°C to +85°C ..................................... 10 Pin MSOP SP6648ER ............................... SP6648ERYWW..........-40°C to +85°C ........................................ 10 Pin DFN SP6648ER/TR ......................... SP6648ERYWW..........-40°C to +85°C ....................................... 10 Pin DFN ...