S8880A Datasheet, PDF (15/30 Pages) Seiko Instruments Inc – ENERGY HARVESTING POWERED BY ULTRA-LOW POWER AND ULTRA-LOW VOLTAGE OPERATION BOOST CHARGE PUMP FOR STEP-UP DC-DC CONVERTER STARTUP

ENERGY HARVESTING POWERED BY ULTRA-LOW POWER AND ULTRA-LOW VOLTAGE OPERATION BOOST CHARGE PUMP FOR STEP-UP DC-DC CONVERTER STARTUP
Rev.1.0_01
S-8880A Series
 Characteristics (Typical Data)
1. Example of major voltage characteristics (Ta = +25°C)
1. 1 Discharge start voltage (V_CPOUT1), discharge stop voltage (V_CPOUT2) vs. Input voltage (V_IN)
V_CPOUT1(S) = 1.8 V
2.2
2.0
VCPOUT1
1.8
1.6
1.4
1.2
1.0
VCPOUT2
0.8
0.0 0.5 1.0 1.5 2.0 2.5 3.0
VIN [V]
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
0.0
VCPOUT1
V_CPOUT1(S) = 2.4 V
VCPOUT2
0.5 1.0 1.5 2.0 2.5 3.0
VIN [V]
1. 2 Discharge start delay time (t_OUT) vs. Input voltage (V_IN)
8
7
6
5
4
3
2
1
0
0.3
V_IN ≤ 0.7 V, C_CPOUT = 10 μF
VCPOUT1(S) = 2.4 V
VCPOUT1(S) = 1.8 V
0.4
0.5
0.6
0.7
VIN [V]
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.5
V_IN ≥ 0.7 V, C_CPOUT = 10 μF
VCPOUT1(S) = 2.4 V
VCPOUT1(S) = 1.8 V
1.0 1.5 2.0 2.5 3.0
VIN [V]
1. 3 Discharge start delay time (t_OUT) vs. Capacitance of startup capacitor (C_CPOUT)
100
VCPOUT1(S) = 2.4 V, VIN = 0.37 V
VCPOUT1(S) = 1.8 V, VIN = 0.35 V
10
1
0.1
0.01
1
VCPOUT1(S) = 2.4 V, VIN = 0.60 V
VCPOUT1(S) = 1.8 V, VIN = 0.60 V
10
100
CCPOUT [F]
10
1
0.1
0.01
1
V_IN = 1.0 V
VCPOUT1(S) = 2.4 V
VCPOUT1(S) = 1.8 V
10
100
CCPOUT [F]
V_IN = 2.0 V
10
VCPOUT1(S) = 2.4 V
1
V_IN = 3.0 V
10
VCPOUT1(S) = 2.4 V
1
0.1
0.01
1
VCPOUT1(S) = 1.8 V
10
100
CCPOUT [F]
0.1
0.01
1
VCPOUT1(S) = 1.8 V
10
CCPOUT [F]
100
15