S-1701A2521-M5T1G Seiko Instruments, S-1701A2521-M5T1G Datasheet - Page 38

• Manufacturer Part Number: S-1701A2521-M5T1G
• Description: IC DETECT/REG 400MA 2.5V SOT23-5
• Manufacturer: Seiko Instruments

Specifications of S-1701A2521-M5T1G

• Applications: Converter, Battery Powered Devices
• Voltage - Input: 2 ~ 6.5 V
• Number Of Outputs: 1
• Voltage - Output: 2.5V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

38
HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series
5. Oscillation
6. Other characteristics
In applications where a resistor is connected to the input side (Figure 32), the through-type current which is generated
when the output goes from low to high (release) causes a voltage drop equal to [through-type current] × [input
resistance] across the resistor. When the input voltage drops below the detection voltage as a result, the output
voltage goes from high to low. In this state, the through-type current stops, its resultant voltage drop disappears, and
the output goes from low to high. The through-type current is then generated again, a voltage drop appears, and
repeating the process finally induces oscillation.
6. 1 Temperature characteristics of detection voltage
The shaded area in Figure 33 is the range where −V
temperature coefficient of the output voltage is ±140 ppm/°C.
Figure 32 Example of Bad Implementation of Detection Voltage Changer
3.000
−V
Figure 33 Detection Voltage Temperature Characteristics
VSS
VIN
DET
[V]
Example of products with −V
−40
R
R
Seiko Instruments Inc.
a
b
V
IN
DET
detector
S-1701
25
block
varies within the operating temperature range when the
DET
= 3.0 V
85
+0.42 mV/°C
−0.42 mV/°C
VDOUT
Ta [°C]
Rev.3.0
_00