产品应用与封装尺寸
图纸取自原厂规格书，点击可放大查看原始尺寸标注。
关键参数速览
- 电源电压 VCC
- 7.0V
产品特点 Features
- Ω MicroSIZE PACKAGE: SOT23-3 The REF30xx is a precision, low power, low voltage dropout voltage reference family available in a tiny SOT23-3.
- Ω LOW DROPOUT: 1mV
- The REF30xx small size and low power consumption (50µA
- Ω HIGH OUTPUT CURRENT: 25mA max) make it ideal for portable and battery-powered applica-
- Ω HIGH ACCURACY: 0.2% tions. The REF30xx does not require a load capacitor, but is
- Ω LOW I : 50 µ A max stable with any capacitive load.
- Ω EXCELLENT SPECIFIED DRIFT PERFORMANCE: Unloaded, the REF30xx can be operated with supplies within
- 1mV of output voltage. All models are specified for the wide
- ° ° °
- 50ppm/ C (max) from 0 C to +70 C temperature range, –40°C to +125°C.
- 75ppm/ C (max) from –40 C to +125 C
- The REF30xx is a series, CMOS, precision bandgap voltage reference. Its basic topology is shown in Figure 1. The transistors Q and Q are biased such that the current
- 1 2 density of Q is greater than that of Q . The difference of the
- 1 2 two base-emitter voltages, Vbe – Vbe , has a positive
- Voltage vs Temperature,” is due to the slightly nonlinear temperature coefficient of the base-emitter voltage of Q .
- + + 1
绝对最大额定值 Absolute Maximum Ratings（TA = 25°C）
超过下表数值可能造成器件永久损坏，设计时请留余量。
| 器件 | reliability. | These | are | stress | 额定值 | only, | and | functional | operation | of |
|---|---|---|---|---|---|---|---|---|---|---|
| Output | Short-Circuit(2).............................................................. | Continuous | ||||||||
| Operating | Temperature | ..................................................–40°C | to | +125°C |
数据来源：原厂规格书
电气特性 Electrical Characteristics（TA = 25°C）
| 参数 | 条件 | 最小 | 典型 | 最大 | 单位 |
|---|---|---|---|---|---|
| REF30xx | |||||
| OUTPUT VOLTAGE | V | 2.994 | 3.0 | 3.006 | V |
| Initial Accuracy | 0.2 | % | |||
| Output Voltage Noise | f = 0.1Hz to 10Hz | 33 | µVp-p | ||
| Voltage Noise | f = 10Hz to 10kHz | 94 | µVrms | ||
| LINE REGULATION | V + 50mV ≤ V ≤ 5.5V | 120 | 375 | µV/V | |
| OUTPUT VOLTAGE | V | 3.294 | 3.30 | 3.306 | V |
| Initial Accuracy | 0.2 | % | |||
| Output Voltage Noise | f = 0.1Hz to 10Hz | 36 | µVp-p | ||
| Voltage Noise | f = 10Hz to 10kHz | 105 | µVrms | ||
| LINE REGULATION | V + 50mV ≤ V ≤ 5.5V | 130 | 400 | µV/V | |
| OUTPUT VOLTAGE | V | 4.088 | 4.096 | 4.104 | V |
| Initial Accuracy | 0.2 | % | |||
| Output Voltage Noise | f = 0.1Hz to 10Hz | 45 | µVp-p | ||
| Voltage Noise | f = 10Hz to 10kHz | 128 | µVrms | ||
| LINE REGULATION | V + 50mV ≤ V ≤ 5.5V | 160 | 410 | µV/V | |
| REF3012, | REF3020, REF3025, REF3030, ° ≤ ≤ ° | REF3033, REF3040 | ° | ||
| 0 C T +70 C ° ≤ ≤ ° | 20 | 50 | ppm/ C ° | ||
| –30 C T +85 C ° ≤ ≤ ° | 28 | 60 | ppm/ C ° | ||
| –40 C T +85 C ° ≤ ≤ ° | 30 | 65 | ppm/ C ° | ||
| –40 C T +125 C | 35 | 75 | ppm/ C | ||
| 0-1000h | 24 | ppm | |||
| 1000-2000h | 15 | ppm | |||
| LOAD REGULATION(3) dV | /dI 0mA < I < 25mA, | 3 | 100 | µV/mA | |
| THERMAL HYSTERESIS(4) | dT | 25 | 100 | ppm | |
| DROPOUT VOLTAGE V | – V | 1 | 50 | mV | |
| SHORT-CIRCUIT CURRENT | I | 45 | mA | ||
| TURN ON SETTLING TIME | to 0.1% at V = 5V with C = 0 | 120 | µs | ||
| Voltage | V I = 0 | V + 0.001(5) | 5.5 | V | |
| Over Temperature | –40 C T +125 C | V + 0.05 | 5.5 | V | |
| Quiescent Current | I ° ≤ ≤ ° | 42 | 50 | µA µ | |
| Over Temperature | –40 C T +125 C | 59 | A | ||
| Specified Range | –40 | +125 | °C | ||
| Operating Range | –40 | +125 | °C | ||
| Storage Range | –65 | +150 | °C | ||
| SOT23-3 Surface-Mount | θ | 110 | °C/W | ||
| θ | 336 | °C/W |
特性曲线（Typical Performance Curves）
订货信息与供货形式
| 器件 | reliability. | These | are | stress | 额定值 | only, | and | functional | operation | of |
|---|---|---|---|---|---|---|---|---|---|---|
| REF3012 | SOT23-3 | DBZ | ||||||||
| REF3020 | SOT23-3 | DBZ | ||||||||
| REF3025 | SOT23-3 | DBZ | ||||||||
| REF3030 | SOT23-3 | DBZ | ||||||||
| REF3033 | SOT23-3 | DBZ | ||||||||
| REF3040 | SOT23-3 | DBZ |