S-816A50AMC-BAZT2G Seiko Instruments, S-816A50AMC-BAZT2G Datasheet - Page 13

• Manufacturer Part Number: S-816A50AMC-BAZT2G
• Description: IC REG LDO 1A 5.0V SOT23-5
• Manufacturer: Seiko Instruments

Specifications of S-816A50AMC-BAZT2G

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 16V
• Voltage - Dropout (typical): 0.1V @ 100mA
• Number Of Regulators: 1
• Current - Output: 1A
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 16 V
• Output Voltage: 5 V
• Output Type: Fixed
• Dropout Voltage (max): 100 mV
• Output Current: 1 A
• Line Regulation: 0.15 % / V
• Load Regulation: 60 mV
• Voltage Regulation Accuracy: 2 %
• Maximum Power Dissipation: 600 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Rev.6.0
Caution The above connection diagram and constant will not guarantee successful operation.
S-816A30AMC (V
Load Current
(0.5 A/div)
1. Overcurrent Protection Circuit
Application Circuits
(1 V/div)
V
V
Figure 12 Output Current Waveforms during Intermittent Operation Prompted by Load Short-Circuiting
ON/OFF
IN
Figure 11 shows a sample of overcurrent protection implemented with an external circuit connected.
The internal overcurrent protection function of the S-816 Series is designed to detect the sink current
(base current of the PNP transistor) at the EXT pin, therefore it may not be able to protect the external
PNP transistor from collector overcurrents caused by an EXT-GND short-circuiting or other phenomenon
occurring outside the IC.
This sample circuit activates the regulator intermittently against collector overcurrents, thereby
suppressing the heat generation of the external PNP transistor.
The duty of the on-time and off-time of the intermittent operation can be regulated through an external
component.
2 V
0 V
1 A
0 A
_00
Perform through evaluation using the actual application to set the constant.
+
−
C
10 μF
IN
IN
=4 V)
2 kΩ
2 kΩ
Tr1
R
R
t (2 ms/div)
2
3
EXTERNAL TRANSISTOR TYPE CMOS VOLTAGE REGULATOR
0.22 μF
0.5 Ω
R
S
C
2
100 kΩ
R
2 kΩ
4
R
1
Tr2
Seiko Instruments Inc.
Figure 11
ON/
0.22 μF
C
OFF
1
VIN
S-816A30AMC (V
Load Current
(0.5 A/div)
(1 V/div)
V
ON/OFF
2 V
0 V
1 A
0 A
S-816 Series
EXT
IN
2SA1213Y
=4 V)
VSS
t (100 μs/div)
VOUT
S-816 Series
+
−
OUT
C
10 μF
L
13