产品特点 Features
- Integrated 80V, 0.7A N-Channel Buck Switch
- 2 all of the functions needed to implement low cost,
- Internal HV Vcc Regulator efficient, Buck bias regulators. This high voltage
- No Control Loop Compensation Required regulator contains an 80 V, 0.7A N-Channel Buck
- Ultra-Fast Transient Response Switch. The device is easy to apply and is provided in the VSSOP-8 and the thermally enhanced WSON-8
- On Time Varies Inversely with Line Voltage packages. The regulator is based on a hysteretic
- Operating Frequency Nearly Constant with control scheme using an on time inversely
- Varying Line Voltage proportional to V . This feature allows the operating
- Adjustable Output Voltage frequency to remain relatively constant with load and input voltage variations. The hysteretic control
- Highly Efficient Operation requires no control loop compensation, while
- Precision Reference providing very fast load transient response. An
- Low Bias Current intelligent current limit is implemented in the LM5007 with forced off time that is inversely proportional to
- Intelligent Current Limit Protection
- V . This current limiting scheme reduces load
- Thermal Shutdown
- External Shutdown Control include: Thermal Shutdown, Vcc undervoltage lockout, gate drive undervoltage lockout, and Max
电气特性 Electrical Characteristics（TA = 25°C）
| 符号 | 参数 | 条件 | 最小 | 典型 | 最大 | 单位 |
|---|---|---|---|---|---|---|
| V V | Regulator Output | 6.6 | 7 | 7.4 | V | |
| V Current | Limit(2) | 11 | mA | |||
| V | undervoltage Lockout Voltage | 6.3 | V | |||
| V | Undervoltage Hysteresis | 206 | mV | |||
| V UVLO | Delay (filter) | 3 | µs | |||
| Operating | Current (ICC) | Non-Switching, FB = 3V | 500 | 675 | µA | |
| Shutdown/Standby Current | R = 0V | 100 | 200 | µA | ||
| Buck | Switch Rds(on) | I = 200mA, | 0.74 | 1.34 | Ω | |
| Gate Drive | UVLO (VBST – VSW) | Rising | 3.4 | 4.5 | 5.5 | V |
| Gate Drive | UVLO Hysteresis | 400 | mV | |||
| Breakdown | Voltage, | T = 25°C | 80 | V | ||
| IN | T = -40°C to +125°C | 76 | V | |||
| Breakdown | Voltage, | T = 25°C | 80 | V | ||
| CC | T = -40°C to +125°C | 76 | V | |||
| Current | Limit Threshold | 535 | 725 | 900 | mA | |
| Current | Limit Response Time | I Overdrive = 0.1A Time to Switch | Off | 225 | ns | |
| OFF time | generator (test 1) | FB=0V, RCL = 100K | 17 | µs | ||
| OFF time | generator (test 2) | FB=2.3V, RCL = 100K | 2.65 | µs | ||
| TON -1 | Vin = 10V, Ron = 200K | 2.15 | 2.77 | 3.5 | µs | |
| TON -2 | Vin = 75V, Ron = 200K | 290 | 390 | 490 | ns | |
| Remote | Shutdown Threshold | Rising | 0.45 | 0.7 | 1.1 | V |
| Remote | Shutdown Hysteresis | 40 | mV | |||
| Minimum | Off Timer | FB = 0V | 300 | ns | ||
| FB | Reference Threshold | Internal reference, Trip point for switch | ON 2.445 | 2.5 | 2.550 | V |
| FB | Over-Voltage Threshold | Trip point for switch OFF | 2.875 | V | ||
| FB Bias | Current | 100 | nA | |||
| Tsd Thermal | Shutdown Temp. | 165 | °C | |||
| Thermal | Shutdown Hysteresis | 25 | °C | |||
| θ Junction | to Ambient | VSSOP-8 Package | 200 | °C/W | ||
| WSON-8 Package | 40 | °C/W |
应用领域 Applications
产品应用与封装尺寸
图纸取自该型号原厂规格书的应用电路与封装尺寸章节，点击图片可放大查看原始尺寸标注。