S-818A33AUC-BGN-T2 Seiko Instruments, S-818A33AUC-BGN-T2 Datasheet - Page 6

• Manufacturer Part Number: S-818A33AUC-BGN-T2
• Description: Low Dropout (LDO) Regulators 3.3V 30uA 2.0%
• Manufacturer: Seiko Instruments

Specifications of S-818A33AUC-BGN-T2

• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 10 V
• Output Voltage: 3.3 V
• Output Type: Fixed
• Dropout Voltage (max): 0.44 V at 60 mA
• Output Current: 0.2 A
• Line Regulation: 0.2 % / V
• Load Regulation: 50 mV
• Voltage Regulation Accuracy: 2 %
• Maximum Power Dissipation: 500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-89
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
„ Technical Terms
6
1. Low dropout voltage regulator
2. Output voltage (V
3. Line regulations 1 and 2 ( V
4. Load regulation ( V
5. Dropout voltage (Vdrop)
6. Temperature coefficient of output voltage [ V
A change of output voltage in temperature [mV/°C] is calculated using the following equation.
The low dropout voltage regulator is a voltage regulator having a low dropout voltage characteristic due to the
internal low on-resistance transistor.
The accuracy of the output voltage is ensured at
output current, and temperature, which differ product by product.
Line regulation indicates the input voltage dependence of the output voltage. The value shows how much the
output voltage changes due to the change of the input voltage when the output current is kept constant.
Load regulation indicates the output current dependence of output voltage. The value shows how much the
output voltage changes due to the change of the output current when the input voltage is kept constant.
Let V
when gradually decreasing input voltage. The dropout voltage is the difference between the V
resultant output voltage defined as following equation.
Vdrop = V
The shadowed area in Figure 6 is the range where V
temperature coefficient of the output voltage is 100 ppm/ C.
Note:
When the above conditions are changed, the output voltage may vary and go out of the accuracy range of
the output voltage. See the electrical characteristics and characteristic data for details.
IN
Change of output voltage in temperatures
1 be an input voltage where the output voltage falls to the 98% of the actual output voltage V
Figure 6 Temperature coefficient range of output voltage
IN
1-[V
V
Ta
OUT
OUT
OUT
V
[mV/ C] = V
OUT
OUT
[V]
(E) × 0.98]
(E)
Specified output voltage
OUT
)
Typical Example of the S-818A28A
3)
-40
OUT
OUT
(S)[V] ×
1, V
OUT
25
Seiko Instruments Inc.
2)
Output voltage temperature coefficient
Ta V
V
OUT
OUT
OUT
/( Ta V
85
[ppm/ C]
OUT
2.0% under the specified conditions of input voltage,
+0.28mV/ C
-0.28mV/ C
varies in the operating temperature range when the
OUT
V
output voltage at 25 C.
)]
OUT
Ta [ C]
1000
(E) is a mesured value of
IN
Rev.1.2
1 and the
OUT
(E)