S-1702 Datasheet, PDF (38/45 Pages) Seiko Instruments Inc – Built-in overcurrent protection circuit

SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
S-1702 Series
Rev.2.2_01
3. 3 Current consumption during operation at detector block^*1 vs. Input voltage
−VDET = 1.3 V
3.5
3.0
2.5
2.0
1.5
Ta = 85°C
1.0
Ta = 25°C
Ta = −40°C
0.5
0
0 1 2 3 4 5 6 6.5
VIN [V]
−VDET = 2.75 V
3.5
3.0
2.5
2.0
1.5
Ta = 85°C
1.0
Ta = 25°C
0.5
Ta = −40°C
0
0 1 2 3 4 5 6 6.5
VIN [V]
−VDET = 5.2 V
3.5
3.0
2.5
2.0
1.5
1.0
Ta = 85°C
Ta = 25°C
0.5
Ta = −40°C
0
0 1 2 3 4 5 6 6.5
VIN [V]
*1. Excluding current flowing in pull-up and pull-down resistors connected to the ON / OFF or RESX pins
3. 4 Detector output voltage vs. Nch transistor
characteristics (ID vs. VDS characteristics)
3. 5 Detector output voltage vs. Pch transistor
characteristics (ID vs. VDS characteristics)
(Ta = +25°C)
(Ta = +25°C)
30
25
20
15
10
5
0
0
VIN = 5.0 V
VIN = 4.0 V
VIN = 3.0 V
VIN = 2.0 V
VIN = 1.3 V
123456
VDS [V]
30
25
20
15
10
5
0
0
VIN = 5.0 V
VIN = 4.0 V
VIN = 3.0 V
VIN = 2.0 V
VIN = 1.5 V
123456
VDS [V]
3. 6 Detector output voltage vs. Input voltage
CMOS output
6
5
4
Ta = 85°C
3
Ta = 25°C
Ta = −40°C
2
1
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
VIN [V]
38
Nch open drain output
0.6
0.5
0.4
0.3
Ta = 85°C
0.2
Ta = 25°C
Ta = −40°C
0.1
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
VIN [V]