S8880A Datasheet, PDF (17/30 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
2. Example of major temperature characteristics (Ta = −40°C to +85°C)
2. 1 Discharge start voltage (V_CPOUT1), discharge stop voltage (V_CPOUT2) vs. Temperature (Ta)
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
−40 −25
VCPOUT1
V_CPOUT1(S) = 1.8 V
VCPOUT2
0
25 50
Ta [C]
75 85
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
−40 −25
VCPOUT1
V_CPOUT1(S) = 2.4 V
VCPOUT2
0
25 50
Ta [C]
75 85
2. 2 Discharge start delay time (t_OUT) vs. Temperature (Ta)
C_CPOUT = 10 μF
10
8
VCPOUT1(S) = 2.4 V, VIN = 0.39 V
6
4
2
VCPOUT1(S) = 1.8 V, VIN = 0.37 V
0
40 25
0
25 50
Ta [C]
75 85
C_CPOUT = 10 μF
1.2
VCPOUT1(S) = 2.4 V, VIN = 0.6 V
1.0
0.8
VCPOUT1(S) = 1.8 V, VIN = 0.6 V
0.6
VCPOUT1(S) = 2.4 V, VIN = 1.0 V
0.4
0.2
VCPOUT1(S) = 1.8 V, VIN = 1.0 V
0.0
40 25 0
25 50
Ta [C]
75 85
V_IN = 2.0 V, C_CPOUT = 10 μF
0.5
0.4
VCPOUT1(S) = 2.4 V
0.3
0.2
0.1
VCPOUT1(S) = 1.8 V
0.0
40 25 0
25 50
Ta [C]
75 85
V_IN = 3.0 V, C_CPOUT = 10 μF
0.5
0.4
VCPOUT1(S) = 2.4 V
0.3
0.2
0.1
VCPOUT1(S) = 1.8 V
0.0
40 25
0
25 50
Ta [C]
75 85
2. 3 Current consumption during operation (I_SS) vs. Temperature (Ta)
0.25
V_CPOUT = 0 V
0.20
0.15
VCPOUT1(S) = 2.4 V, VIN = 0.39 V
0.10
0.05 _{VCPOUT1(S) = 1.8 V, VIN = 0.37 V}
0.00
40 25 0
25 50
Ta [C]
75 85
V_CPOUT = 0 V
1.8
1.6 VCPOUT1(S) = 2.4 V, VIN = 1.0 V
1.4
VCPOUT1(S) = 1.8 V, VIN = 1.0 V
1.2
1.0
0.8 ^{VCPOUT1(S) = 2.4 V, VIN = 0.6 V}
0.6
VCPOUT1(S) = 1.8 V, VIN = 0.6 V
0.4
0.2
−40 −25 0
25 50 75 85
Ta [C]
17