S-814A50AMC-BDOT2G Seiko Instruments, S-814A50AMC-BDOT2G Datasheet - Page 13

• Manufacturer Part Number: S-814A50AMC-BDOT2G
• Description: IC REG LDO 180MA 5.0V SOT23-5
• Manufacturer: Seiko Instruments

Specifications of S-814A50AMC-BDOT2G

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 10V
• Voltage - Dropout (typical): 0.17V @ 60mA
• Number Of Regulators: 1
• Current - Output: 180mA (Min)
• 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: 12 V
• Output Voltage: 5 V
• Output Type: Fixed
• Dropout Voltage (max): 0.87 V
• Output Current: 70 mA
• Line Regulation: 0.2 %/V
• Load Regulation: 50 mV
• Voltage Regulation Accuracy: 2 %
• Maximum Power Dissipation: 250 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.3.0
3. ON/OFF pin (Shutdown pin)
4. Short-circuit protection circuit
This pin starts and stops the regulator.
When the shutdown pin is switched to the shutdown level, the operation of all internal circuits stops, the
built-in Pch MOSFET output transistor between VIN pin and VOUT pin is shutdown, allowing current
consumption to be drastically reduced. The VOUT pin enters the Vss level due to internally divided
resistance of several MΩ between VOUT pin and VSS pin.
Furthermore, the structure of the ON/OFF pin is as shown in Figure 13. Since the ON/OFF pin is neither
pulled down nor pulled up internally, do not use it in the floating state. In addition, please note that current
consumption increases if a voltage of 0.3 V to V
ON/OFF pin is not used, connect it to the VIN pin in case of the product type is ‘”A” and to the VSS pin in
case of “B”.
The S-814 Series incorporates a short-circuit protection circuit to protect the output transistor against
short-circuiting between VOUT pin and VSS pin.
The short-circuit protection circuit controls output current as shown in “1. Output voltage vs. Output
current (When load current increases)” curve in “
approx. 70 mA or more from flowing even if VOUT pin and VSS pin are shorted. However, the short-
circuit protection circuit does not protect thermal shutdown. Be sure that input voltage and load current do
not exceed the specified power dissipation level.
When output current is large and a difference between input and output voltages is large even if not
shorted, the short-circuit protection circuit may start functioning and the output current may be controlled
to the specified amperage. For details, refer to “3. Maximum output current vs. Input voltage” curve in
“ Characteristics”.
ON/OFF
Product type
_00
Figure 13
A
A
B
B
V
SS
V
IN
“H”: Power on
“L”: Shutdown
“H”: Shutdown
“L”: Power on
ON/OFF pin
Seiko Instruments Inc.
LOW DROPOUT CMOS VOLTAGE REGULATOR
Internal circuit
Operating
Operating
Stop
Stop
Table 6
IN
−0.3 V is applied to the shutdown pin. When the
Characteristics”, and prevents output current of
VOUT pin voltage
Set value
Set value
V
V
SS
SS
level
level
Current consumption
S-814 Series
I
I
I
I
SS1
SS2
SS2
SS1
13