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Product Detailed Parameters
- Description：IC REG LINEAR 3.7V 150MA SOT23-5
- Series：S-1111
- Mfr：ABLIC Inc.
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：6.5V
- Voltage - Output (Min/Fixed)：3.7V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.26V @ 100mA
- Current - Output：150mA
- Current - Quiescent (Iq)：1 µA
- Current - Supply (Max)：65 µA
- PSRR：70dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
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Overview
The ABLIC Inc. S-1111B37MC-NYWTFG is a positive voltage regulator from the S-1111/1121 Series, developed using CMOS technology. It provides a fixed output voltage of 3.7 V with an accuracy of ±1.0%. The device features a low dropout voltage of 200 mV typical at 100 mA and supports an output current up to 150 mA when the input voltage is at least 1.0 V above the output. Current consumption during operation is 35 μA typical, reducing to 0.1 μA in power-off mode via the ON/OFF circuit. Ripple rejection is 70 dB typical at 1.0 kHz. It operates within a temperature range of −40°C to +85°C and includes built-in overcurrent protection.
Feature Summary
- Built-in ON/OFF circuit enables significant reduction in current consumption for extended battery life.
- Integrated overcurrent protection circuit limits output current to prevent damage to the load transistor.
- Low on-resistance P-channel MOS FET output transistor ensures high efficiency and low dropout voltage.
- High ripple rejection capability effectively suppresses input noise under specified operating conditions.
Applications
- Power supply for battery-powered devices
- Power supply for personal communication devices
- Power supply for cellular phones
- Power supply for home electric/electronic appliances
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm pin configuration and environmental codes. Confirm that the component meets RoHS requirements if applicable. Ensure the design accounts for package power dissipation limitations when selecting output capacitors and layout patterns. Validate compatibility with existing system voltage rails before finalizing procurement.
Selection Notes
Select this component for applications requiring a fixed 3.7 V rail with tight accuracy. Ensure the input voltage remains sufficiently above the output to maintain regulation without excessive heat generation. Verify that the external capacitor ESR falls within the stable operating range to prevent oscillation. Consider the ON/OFF logic level requirements for system control integration.
Part Context
This part belongs to the S-1111/1121 Series of high ripple-rejection low dropout CMOS voltage regulators manufactured by Seiko Instruments Inc. (ABLIC). The series is characterized by its low current consumption and compact SOT-23-5 package. The S-1111 variant specifically defines the pinout configuration distinct from the S-1121 series.
Replacement Considerations
S-1111B37MC-NYATFx
FAQ
How does the ON/OFF pin function affect current consumption?
Setting the ON/OFF pin to the OFF level stops internal circuit operation and turns off the output transistor, reducing current consumption to 0.1 μA typical.
What is the recommended output capacitor type for stability?
A tantalum capacitor with a capacitance of 2.2 μF or more is recommended to ensure stable operation within the optimal ESR range.
