S-875077CUP-ACFT2G Seiko Instruments, S-875077CUP-ACFT2G Datasheet - Page 29

• Manufacturer Part Number: S-875077CUP-ACFT2G
• Description: IC VOLT DETECT/REG 5.0V SOT89-5
• Manufacturer: Seiko Instruments

Specifications of S-875077CUP-ACFT2G

• Applications: Converter, Constant Voltage Power Supply
• Voltage - Input: 1.3 ~ 24 V
• Number Of Outputs: 1
• Voltage - Output: 5V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-89-5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev.8.0
4. Delay circuit
The delay circuit outputs voltage detector output (V
release voltage (+V
In Figure 22, when V
output (V
under the detection voltage (−V
capacitor (C
without delay.
The external capacitor (C
Its delay time (t
t
Caution 1. Unless an output delay is needed, keep CD pin open. Do not apply external voltage
pd
HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION
(ms)=Delay coefficient (3.18 min., 5.74 typ., 8.73 max.)×C
_00
OR
2. When designing your printed-circuit board layout, take care that no leakage current
) changes from low to high level, providing delay output. When the voltage at VIN pin falls
D
other than ground potential to CD pin, which may cause IC breakdown.
flows to the external capacitor (C
obtained. Because the value of the constant current source (I
impedance is high.
) is rapidly discharged and the voltage detector output (V
pd
) is expressed by the following equation:
DET
cd
) at the rising of VIN pin.
exceeds the reference voltage (V
D
) is charged with constant current, and is practically independent of V
DET
N2
), the N2 transistor turns ON, therefore the charge of the external
Seiko Instruments Inc.
CD
V
C
Figure 22
cd
D
I
C
D
OR
), otherwise the correct delay time may not be
) with delay after the voltage at V
V
ref
+
−
ref
), the output voltage pin detection voltage
D
(nF)
VOR
OR
) changes from high to low level
C
) is only 195 nA, C
IN
pin has become
S-87x Series
IN
voltage.
D
to
29