S8823A Datasheet, PDF (1/28 Pages) Seiko Instruments Inc – ENERGY HARVESTING POWERED BY ULTRA-LOW POWER AND ULTRA-LOW VOLTAGE OPERATION BOOST CHARGE PUMP

S-8823A Series
www.sii-ic.com
© SII Semiconductor Corporation, 2017
ENERGY HARVESTING
POWERED BY ULTRA-LOW POWER AND ULTRA-LOW VOLTAGE OPERATION
BOOST CHARGE PUMP
Rev.1.0_01
The S-8823A Series is a boost charge pump which enables operation with ultra-low power and ultra-low voltage. An original
circuit system and SOI technology allow this product to boost the industry's lowest level^*1 0.35 V ultra-low input voltage as a
boost charge pump, and achieve operation with an extremely weak power of 26 μW. This makes the S-8823A Series most
suitable for use in applications where low-voltage energy harvesting devices such as 1-cell to 2-cell solar cells and biofuels,
etc. are boosted.
The boosted electric power is stored in an external capacitor, and the discharge operation is started to intermittently drive
LED or other minute loads of several mW if the capacitor reaches the discharge start voltage (V_CPOUT1).
It also includes boost flying capacitors, which allows for formation of a circuit by adding a minimum of just one external
capacitor, thus realizing miniaturization of devices.
*1. Based on available information as of October 2016
 Features
• Ultra-low power and ultra-low voltage operation:
• Minimum operation input voltage:
• Current consumption during operation:
• Discharge start voltage:
• Power-off voltage:
• External component:
• Operation temperature range:
• Lead-free (Sn 100%), halogen-free
Input power at startup (P_IN(START-UP)) = 26 μW typ.
(V_CPOUT1(S) = 1.8 V, V_IN = 0.35 V) (Ta = +25°C)
0.35 V (V_CPOUT1(S) = 1.8 V) (Ta = +25°C)
0.39 V (V_CPOUT1(S) = 1.8 V to 2.4 V) (Ta = −40°C to +85°C)
74 μA typ. (V_IN = 0.35 V)
V_CPOUT1(S) = 1.8 V to 2.4 V (Selectable in 0.2 V step)
V_CPOUT1 + 0.1 V (Fixed internally)
External capacitor (C_CPOUT) × 1 unit^*1
Ta = −40°C to +85°C
*1. Adjust the output capacitance based on the load. The capacitance should be fully confirmed using an actually
mounted model since it affects the startup time. Refer to " Characteristics (Typical Data)" for details.
 Applications
 Packages
• Biofuel, fuel cell, thermoelectric generator, solar cell and
other energy harvesting
• Boosting from low-voltage power supply
• Intermittently power supplying to intermittent operation
system
• Intermittently minute load driving
• SOT-23-5
(2.8 mm × 2.9 mm × t1.3 mm max.)
• SNT-8A
(2.46 mm × 1.97 mm × t0.5 mm max.)
 Typical Application Circuit
OUT
S-8823A
VIN
Series ^CPOUT
C_CPOUT
VM
VSS
LED
 Basic Operation Waveform
3
2
1 VCPOUT
0
V_IN = 0.37 V
3 VOUT
2
1
0
VIN
0.5
0
t (2 s / div.)
1