S-1142B30I-E6T1U Seiko Instruments, S-1142B30I-E6T1U Datasheet - Page 17

• Manufacturer Part Number: S-1142B30I-E6T1U
• Description: IC REG LDO 3V 0.2A HSOP6
• Manufacturer: Seiko Instruments

Specifications of S-1142B30I-E6T1U

• Regulator Topology: Positive Fixed
• Voltage - Output: 3V
• Voltage - Input: Up to 50V
• Voltage - Dropout (typical): 0.72V @ 200mA
• Number Of Regulators: 1
• Current - Output: 200mA (Min)
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-SOIC variation (0.154", 3.9mm), 4 Leads + 2 Fins
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 728-1061-2

Rev.2.0
5. Thermal shutdown circuit
The S-1142 Series has a thermal shutdown circuit to protect the device from damage due to overheat. When the
junction temperature rises to 150°C (Typ.), the thermal shutdown circuit operates to stop regulating. When the
junction temperature drops to 125°C (Typ.), the thermal shutdown circuit is released to restart regulating.
Due to self-heating of the S-1142 Series, if the thermal shutdown circuit starts operating, it stops regulating so that
the output voltage drops. When regulation stops, the S-1142 Series does not itself generate heat and the IC’s
temperature drops. When the temperature drops, the thermal shutdown circuit is released to restart regulating, thus
this IC generates heat again. Repeating this procedure makes the waveform of the output voltage into a pulse-like
form. Stop or restart of regulation continues unless decreasing either both of the input voltage and the output
voltage in order to reduce the internal current consumption, or decreasing the ambient temperature.
*1. Junction temperature
_00
Thermal Shutdown Circuit
Operate : 150°C (Typ.)
Release : 125°C (Typ.)
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
*1
*1
Table 9
Seiko Instruments Inc.
VOUT Pin Voltage
Set value
V
SS
level
S-1142 Series
17