Overview
The TPS7A0318PYCHR is an ultra-small, ultra-low quiescent current low-dropout linear regulator (LDO) produced by Texas Instruments. This device is designed to source 200 mA with excellent transient performance, making it ideal for applications where very-low quiescent current is critical. The TPS7A03 series, which includes the TPS7A0318PYCHR, maintains low quiescent current (IQ) consumption even in dropout mode, significantly increasing battery life. When in shutdown or disabled mode, the device consumes an ultra-low 3-nA IQ, further enhancing battery shelf life.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | DSBGA (YCH) | - |
| Pins | 4 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Quiescent Current (IQ) | 200 nA (typ) | nA |
| Shutdown IQ | 3 nA (typ) | nA |
| Output Current | 200 mA | mA |
| Input Voltage Range | 1.5 V to 6.0 V | V |
| Output Voltage Range | 0.8 V to 5.0 V (fixed) | V |
| Output Accuracy | 1.5% over temperature | % |
| Dropout Voltage | 270 mV (max) at 200 mA | mV |
| Settling Time | < 10 µs | µs |
| Undershoot | 80 mV | mV |
Key Features
- Ultra-low quiescent current (IQ): 200 nA (typ), even in dropout mode.
- Ultra-low shutdown IQ: 3 nA (typ).
- Excellent transient response (1 mA to 50 mA) with < 10-µs settling time and 80-mV undershoot.
- Smart enable circuit with an internally controlled pulldown resistor to minimize external components and current draw.
- Very low dropout voltage: 270 mV (max) at 200 mA.
- Stable with a 1-µF or larger capacitor.
- Output voltage range: 0.8 V to 5.0 V available in 50-mV steps.
- Full operation over a temperature range of -40°C to +125°C.
Applications
- Smoke and heat detectors.
- Gas, heat, and water meters.
- Blood glucose monitors and pulse oximeters.
- Residential circuit breakers and fault indicators.
- Building automation systems.
- Any application requiring ultra-low quiescent current and high transient performance.
Q & A
- What is the typical quiescent current (IQ) of the TPS7A0318PYCHR? The typical quiescent current is 200 nA, even in dropout mode.
- What is the shutdown IQ of the TPS7A0318PYCHR? The shutdown IQ is 3 nA (typ).
- What is the output current capability of the TPS7A0318PYCHR? The device can source up to 200 mA.
- What is the input voltage range for the TPS7A0318PYCHR? The input voltage range is from 1.5 V to 6.0 V.
- What is the output voltage range for the TPS7A0318PYCHR? The output voltage range is from 0.8 V to 5.0 V, available in 50-mV steps.
- What is the dropout voltage of the TPS7A0318PYCHR? The dropout voltage is 270 mV (max) at 200 mA.
- How does the smart enable circuit work in the TPS7A0318PYCHR? The smart enable circuit features an internally controlled pulldown resistor that keeps the LDO disabled even when the EN pin is left floating, minimizing external components and current draw.
- What is the settling time for the TPS7A0318PYCHR during transient response? The settling time is less than 10 µs.
- What is the operating temperature range for the TPS7A0318PYCHR? The device operates over a temperature range of -40°C to +125°C.
- What types of applications are suitable for the TPS7A0318PYCHR? Applications include smoke and heat detectors, gas and water meters, blood glucose monitors, residential circuit breakers, and any application requiring ultra-low quiescent current and high transient performance.
