s-1702ecc01-i6t1g Seiko Instruments Inc., s-1702ecc01-i6t1g Datasheet - Page 27

• Manufacturer Part Number: s-1702ecc01-i6t1g
• Description: Ultra-low Current Consumption 150 Ma Voltage Regulator With Built-in High-accuracy Voltage Detector And Reset Input Function
• Manufacturer: Seiko Instruments Inc.

ULTRA-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
Rev.1.1
3. 1. 1 Regulator output voltage (V
_00
Caution If the input voltage or load current changes transiently, undershoot or overshoot occurs in
Each detector block of S-1702Axx, Bxx, Cxx, Dxx, Lxx, and Mxx detects the regulator output voltage (V
C
D
*1. S-1702Lxx and S-1702Mxx only
V
V
SS
SENSE
Figure 30 Block Diagram (Regulator Output Voltage (V
VDOUT
the regulator output voltage (V
detected by the detector, if the output voltage reaches the detection voltage or less due to
undershoot, the detector operates so that a reset signal may be output. To prevent this, set
the value of the capacitor so that the value of undershoot is the minimum, or set the voltage
range in which the difference of the output voltage and the detection voltage is undershoot
or more.
V
VSS
SS
VIN
(V
Constant
CD
current
source
IN
)
*1
*1
Hysteresis width (V
V
IN
*1. When the SENSE pin is connected to the VIN pin.
V
ref
R
R
R
OUT
a
b
c
Seiko Instruments Inc.
Figure 29 Operation
+
−
) detection types (S-1702Axx, Bxx, Cxx, Dxx, Lxx, Mxx)
HYS
)
V
(1)
N
SS
1
OUT
V
). In the product types that the regulator output voltage is
OUT
(2)
A
(3)
circuit
Delay
(4)
B
V
DOUT
t
D
(5)
OUT
Detection voltage (–V
Output
V
Release voltage (+V
Lowest operating voltage
V
circuit
) Detection Type)
DD
SS
VDOUT
S-1702 Series
DET
DET
)
)
OUT
).
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