Rev.3.1
_00
VOLTAGE REGULATION
STEP-UP CHARGE PUMP DC-DC CONVERTER
S-8821 Series
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:
•
Output voltage:
•
Output voltage accuracy:
•
Built-in soft start circuit:
•
Output current
•
Oscillation frequency:
•
ON/OFF function:
•
Ultra-small package:
•
Lead-free products
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 (V
IN
=(V
OUT(S)
×
0.80) V)
1.0 MHz typ.
During standby: 1
μA
max.
SOT-23-6W
Applications
•
Lithium ion battery driven applications
•
Local power supply
•
Power supply for white LED display backlights
Packages
Package Name
Package
Drawing Code
Tape
Reel
SOT-23-6W
MP006-B
MP006-B
MP006-B
Seiko Instruments Inc.
1
SII [ SEIKO INSTRUMENTS INC ]
