S-1142A50I-E6T1U Seiko Instruments, S-1142A50I-E6T1U Datasheet - Page 16

• Manufacturer Part Number: S-1142A50I-E6T1U
• Description: IC REG LDO 5V 0.2A HSOP6
• Manufacturer: Seiko Instruments

Specifications of S-1142A50I-E6T1U

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 50V
• Voltage - Dropout (typical): 0.5V @ 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): -
• Other names: 728-1060-2

16
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series
3. Shutdown pin (ON/OFF pin)
4. Overcurrent protector
This pin starts and stops the regulator.
When the ON/OFF pin is set to the shutdown level, the entire internal circuit stops operating, and the built-in
P-channel MOS FET output transistor between the VIN and VOUT pins is turned off, in order to reduce the current
consumption significantly. The VOUT pin is set to the V
between the VOUT and VSS pins.
Note that the current consumption increases when a voltage of 0.3 V to V
The ON/OFF pin is configured as shown in Figure 12. Since the ON/OFF pin is neither pulled down nor pulled up
internally, do not use it in the floating state. When not using the ON/OFF pin, connect it to the VSS pin in the
product A type, and connect it to the VIN pin in the B type.
The S-1142 Series has an overcurrent protection circuit having the characteristics shown in (1) Output Voltage vs.
Output Current (When load current is increased) (Ta = +25°C) in “ Characteristics (Typical Data)”, in order to
protect the output transistor against an excessive output current and short circuiting between the VOUT and VSS
pin. The current (I
value is restored for the output voltage, if releasing a short circuit once.
Caution Using the overcurrent protection circuit is to protect the output transistor from accidental
Logic Type
ON/OFF
A
A
B
B
conditions such as short circuited load and the rapid and large current flow in the large capacitor.
The overcurrent protection circuit is not suitable for use under the short circuit status or large
current flowing (200 mA or more) that last long.
Figure 12
SHORT
“H”: Power off
“H”: Power on
“L”: Power on
“L”: Power off
ON/OFF Pin
) when the output pin is short-circuited is internally set at approx. 80 mA (typ.), and the initial
VSS
VIN
Internal Circuits
Operate
Operate
Stop
Stop
Seiko Instruments Inc.
Table 8
VOUT Pin Voltage
Set value
Set value
V
V
SS
SS
SS
level
level
level by the internal dividing resistor of several MΩ
IN
Current Consumption
− 0.3 V is applied to the ON/OFF pin.
I
I
I
I
SS1
SS2
SS2
SS1
Rev.2.0
_00