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S-8821 Dataheets PDF



Part Number S-8821
Manufacturers ABLIC
Logo ABLIC
Description BOOST CHARGE PUMP DC-DC CONVERTER
Datasheet S-8821 DatasheetS-8821 Datasheet (PDF)

S-8821 Series www.ablic.com © ABLIC Inc., 2002-2021 VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER Rev.5.2_00 The S-8821 series is a CMOS boost charge pump DC-DC converter with a voltage regulation function. The S-8821 series consists of an oscillation circuit, a controller, a reference voltage circuit, an error amplifier circuit, and an output switching transistor, and can regulate the output voltage by PFM control. Since small ceramic capacitors can be used for the pump capacitor, inp.

  S-8821   S-8821



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S-8821 Series www.ablic.com © ABLIC Inc., 2002-2021 VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER Rev.5.2_00 The S-8821 series is a CMOS boost charge pump DC-DC converter with a voltage regulation function. The S-8821 series consists of an oscillation circuit, a controller, a reference voltage circuit, an error amplifier circuit, and an output switching transistor, and can regulate the output voltage by PFM control. Since small ceramic capacitors can be used for the pump capacitor, input capacitor, and output capacitor, the mounting area can be minimized.  Features • PFM control CMOS boost charge pump • Power supply voltage: • Output voltage: • Output voltage accuracy: • Built-in soft start circuit: • Output current • Oscillation frequency: • ON/OFF function: • Lead-free, Sn 100%, halogen-free*1 1.6 to 5.0 V 2.5 to 5.5 V, selectable in 0.1 V steps. ±2 % max. 1.0 ms typ. 25 mA (VIN=(VOUT(S) × 0.80) V) 1.0 MHz typ. During standby: 1 μA max. *1. Refer to “ Product Name Structure” for details.  Applications • Lithium ion battery driven applications • Local power supply • Power supply for white LED display backlights  Packages • SOT-23-6W • SNT-8A 1 VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER S-8821 Series  Block Diagram VIN CIN=4.7 μF SW1 C+ CPUMP=0.10 μF C− SW2 SW3 SW4 Switch control circuit Soft start circuit PFM control oscillator circuit (1.0 MHz) Rs + Rf - ON/OFF circuit Reference voltage Rev.5.2_00 VOUT COUT=10 μF ON/OFF Figure 1 GND 2 Rev.5.2_00 VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER S-8821 Series  Product Name Structure • The output voltage and packages for the S-8821 Series can be selected at the user’s request. Refer to the “Product name” for the meanings of the characters in the product name, “Package” regarding the package drawings and “Product name list” for the full product names. 1. Product name (1) SOT-23-6W S-8821 xx A MH - xxx TF x Environmental code S: Lead-free, halogen-free G: Lead-free (Contact our sales representatives for details) U: Lead-free (Sn 100%), halogen-free IC direction in tape specifications*1 Product name (abbreviation)*2 Package name (abbreviation) MH: SOT-23-6W Output voltage 25 to 55 (E.g., when the output voltage is 2.5 V, it is expressed as 25.) *1. Refer to the tape specifications at the end of this book. *2. Refer to the product name list. (2) SNT-8A S-8821 xx A PH - xxx TF U Environmental code U: Lead-free (Sn 100%), halogen-free IC direction in tape specifications*1 Product name (abbreviation)*2 Package name (abbreviation) PH: SNT-8A Output voltage 25 to 55 (E.g., when the output voltage is 2.5 V, it is expressed as 25.) *1. Refer to the tape specifications at the end of this book. *2. Refer to the product name list. 2. Package Package Name SOT-23-6W SNT-8A Package MP006-B-P-SD PH008-A-P-SD Drawing Code Tape Reel MP006-B-C-SD MP006-B-R-SD PH008-A-C-SD PH008-A-R-SD Land ⎯ PH008-A-L-SD 3 VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONV.


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