S-8821 datasheet(1/19 Pages) SII

Part #	S-8821

Description	VOLTAGE REGULATION STEP-UP CHARGE PUMP DC-DC CONVERTER

PDF	19 Pages

Scroll/Zoom	100%

Manufacturer	SII [Seiko Instruments Inc]

Direct Link	http://www.sii.co.jp

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1 / 19 page

Rev.3.1_00

VOLTAGE REGULATION

STEP-UP CHARGE PUMP DC-DC CONVERTER

S-8821 Series

Seiko Instruments Inc.

1

The S-8821 series is a CMOS step-up 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

• Step-up PFM control CMOS charge pump

• Power supply voltage:

1.6 to 5.0 V

• Output voltage:

2.5 to 5.5 V, selectable in 0.1 V steps.

• Output voltage accuracy:

±2 % max.

• Built-in soft start circuit:

1.0 ms typ.

• Output current

25 mA (VIN=(VOUT(S) × 0.80) V)

• Oscillation frequency:

1.0 MHz typ.

• ON/OFF function:

During standby: 1

μA max.

• Ultra-small package:

SOT-23-6W

• Lead-free products

Applications

• Lithium ion battery driven applications

• Local power supply

• Power supply for white LED display backlights

Packages

Drawing Code

Package Name

Package

Tape

Reel

SOT-23-6W

MP006-B

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ABLIC Inc.	S-8821	424Kb / 24P	VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER Rev.5.1_03
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Seiko Instruments Inc	S-882125AMH-M2ATFz	1Mb / 24P	VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER
ABLIC Inc.	S-882125AMH-M2ATFZ	424Kb / 24P	VOLTAGE REGULATION BOOST CHARGE PUMP DC-DC CONVERTER Rev.5.1_03
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S-8821 Datasheet(PDF) 1 Page - Seiko Instruments Inc

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