S-1701A2728-M5T1G SII [Seiko Instruments Inc], S-1701A2728-M5T1G Datasheet - Page 48

• Manufacturer Part Number: S-1701A2728-M5T1G
• Description: HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
• Manufacturer: SII [Seiko Instruments Inc]

If the desired detection voltage range is other than those provided by the S-1701 Series, the detection voltage
can be changed by using a divided resistor or diode in the SENSE pin products (N / P / Q / R / S / T types) as
shown in Figures 38 and 39 .
In the case shown in Figure 38 , the hysteresis width also changes at the same time.
1. Changing detection voltage using divided resistors
2. Changing detection voltage using diode
48
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series
Application Circuit
Caution If R
Caution
*1. Set R
Detection voltage = V
Detection voltage =
Hysteresis width =
formula due to the through current of the IC.
The above connection diagrams (Figures 38 and 39) and constants will not
guarantee successful operation.
application to set the constants.
a
a
to 75 kΩ or lower to prevent oscillation.
and R
b
R
(R
R
a
are larger, the hysteresis may be greater than the result of the above
f1
VDD
VSS
R
a
VDD
+ R
VSS
a
R
+ V
b
+ R
≤ 75 kΩ)
b
b
f2
b
• V
+ (−V
V
V
R
R
• −V
f1
f2
a
b
HYS
Seiko Instruments Inc.
*1
DET
DET
SENSE
SENSE
)
Figure 38
Figure 39
S-1701 Series
N to T types
S-1701 Series
N to T types
Perform thorough evaluation using the actual
VDD
VDOUT
VDD
VDOUT
Rev.2.4
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