R1171 Series
1.5A Voltage Regulator
Description
The R1171 Series are CMOS-based positive voltage regulator ICs. The R1171 Series have features of low dropout voltage, high output voltage accuracy, low consumption current. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at short mode, a chip enable circuit, and thermal shutdown circuit. The output voltage of R1171 is fixed in the IC. Low consumption current by the merit of CMOS process and built-in transistors with low ON-resistance make low dropout voltage and chip enable function prolongs the battery life. These regulators are remarkable improvement on the current regulators in terms of input transient response, and load transient response. Thus, the R1171 Series are suitable for various power sources.
Spec
| Standard | Automotive | |
|---|---|---|
| Input Voltage Range | 2.1 V to 6.0 V (7.0 V) | |
| Operating Temperature Range | -40°C to 85°C (125°C) | |
| Supply Current | Typ. 130 µA | |
| Standby Current | Typ. 0.1 µA | |
| Output Voltage Range | 1.5 V to 5.0 V (0.1 V step) | 1.5 V to 5.0 V (0.1 V step), 1.85 V, 2.85 V |
| Output Voltage Accuracy | ±2.0% (Ta = 25°C) | |
| Output Voltage Temperature Coefficient | Typ. ±100 ppm/°C | |
| Dropout Voltage | Typ. 0.09 V (VOUT = 3.0 V, IOUT = 300 mA) | |
| Line Regulation | Typ. 0.05%/V | |
| Output Current | Min 1.5 A (VIN = VOUT + 1.0 V) | |
| Ripple Rejection | Typ. 50 dB | |
| Package | HSOP-6J | |
Protections / Functions
| TSD | Reverse | Current Limit | ISC | Inrush | Constant Slope | ECO mode | Auto Discharge | External Driver | PGOOD |
|---|---|---|---|---|---|---|---|---|---|
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Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| Reverse Current Protection | Reverse Current Protection |
| Current Limit | Overcurrent Protection |
| ISC | Short Current Protection |
| Inrush Current Limit | Inrush Current Protection |
| Constant Slope | Constant Slope Function |
| ECO mode | ECO Function |
| Auto Discharge | Auto Discharge Function |
| External Driver | External Output Driver Transistor |
Technical Documents
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R1171S301x Dropout Voltage vs. Output Current
Quality & Packages
- Refer to the datasheets for the details on the product.
- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
FAQ
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