S-875255CUP-AHB-T2 Seiko Instruments, S-875255CUP-AHB-T2 Datasheet - Page 26

• Manufacturer Part Number: S-875255CUP-AHB-T2
• Description: Linear Regulators - Standard 5.2V with 5.5V Detec
• Manufacturer: Seiko Instruments

Specifications of S-875255CUP-AHB-T2

• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Fixed
• Output Voltage: 5.2 V
• Output Current: 0.6 mA
• Line Regulation: 50 mV
• Load Regulation: 50 mV
• Input Voltage Max: 24 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: SOT-89-5
• Maximum Power Dissipation: 1000 mW
• Mounting Style: SMD/SMT
• Output Voltage Tolerance: +/- 2.4 %
• Voltage Regulation Accuracy: 2.4 %
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

26
HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION
S-87x Series
1. Reference voltage circuit
2. Voltage regulator
3. Short-circuit protection circuit
Operation
The reference voltage circuit operates all the time when the voltage is applied to VIN pin and is not
affected by the V
Figure 17 shows the voltage regulator circuit. The S-87x Series has a Pch MOS transistor as the output
control transistor.
Reverse current may break IC if V
between V
V
The output voltage of the voltage regulator can be selected as follows:
2.6 V to 5.8 V±2.4 % (0.1 V step)
*1. Parasitic diode
Caution For an application with a load current of less than 1 µ µ µ µ A, the leakage current of the control
The S-87x Series has a built-in short-circuit protection circuit to protect the element from break caused by
a large current in case of a short circuit. The output short current is internally limited to approx. 70 mA.
Short-circuit protection circuit has three kinds characteristics according to input voltage (V
Figure 18 to 20.
At 5 V Output:
(a) V
IN
+0.3 V.
V
[V]
OUT
IN
/V
transistor M1 increases the output voltage.
OUT
IN
Figure 18
and V
≥ ≥ ≥ ≥ 2.0
I
OS
PF
OUT
I
max
signal.
due to the structure of the control transistor. Therefore, keep V
[mA]
I
OUT
V
REF
Figure 17 Voltage regulator
OUT
(b) 1.5≤ ≤ ≤ ≤ V
V
potential is higher than V
[V]
−
+
OUT
Seiko Instruments Inc.
IN
Figure 19
/V
OUT
I
OS
< < < < 2.0
M1
V
IN
R
R
2
1
[mA]
I
IN
OUT
*1
, because a parasitic diode is formed
circuit
V
OUT
(c) V
V
[V]
OUT
IN
/V
OUT
< < < < 1.5
Figure 20
OUT
I
OS
lower than
IN
) as shown in
Rev.6.1
[mA]
I
OUT
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