ZHCSH62B December 2017 – October 2019 LM76002-Q1 , LM76003-Q1
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Fixed-Frequency, Peak-Current-Mode Control
- 7.3.2 Light Load Operation Modes — PFM and FPWM
- 7.3.3 Adjustable Output Voltage
- 7.3.4 Enable (EN Pin) and UVLO
- 7.3.5 Internal LDO, VCC UVLO, and Bias Input
- 7.3.6 Soft Start and Voltage Tracking (SS/TRK)
- 7.3.7 Adjustable Switching Frequency (RT) and Frequency Synchronization
- 7.3.8 Minimum On-Time, Minimum Off-Time, and Frequency Foldback at Dropout Conditions
- 7.3.9 Internal Compensation and CFF
- 7.3.10 Bootstrap Voltage and VBOOT UVLO (BOOT Pin)
- 7.3.11 Power Good and Overvoltage Protection (PGOOD)
- 7.3.12 Overcurrent and Short-Circuit Protection
- 7.3.13 Thermal Shutdown
- 7.4 Device Functional Modes
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Applications
- 8.2.1 Design Requirements
- 8.2.2
Detailed Design Procedure
- 8.2.2.1 Custom Design With WEBENCH® Tools
- 8.2.2.2 Output Voltage Setpoint
- 8.2.2.3 Switching Frequency
- 8.2.2.4 Input Capacitors
- 8.2.2.5 Inductor Selection
- 8.2.2.6 Output Capacitor Selection
- 8.2.2.7 Feed-Forward Capacitor
- 8.2.2.8 Bootstrap Capacitors
- 8.2.2.9 VCC Capacitors
- 8.2.2.10 BIAS Capacitors
- 8.2.2.11 Soft-Start Capacitors
- 8.2.2.12 Undervoltage Lockout Setpoint
- 8.2.2.13 PGOOD
- 8.2.2.14 Synchronization
- 8.2.3 Application Curves
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機(jī)械、封裝和可訂購(gòu)信息
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RNP|30
散熱焊盤(pán)機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RNP|30
訂購(gòu)信息
8.2.3 Application Curves
Unless otherwise specified the following conditions apply:
| VOUT = 3.3 V | fSW = 400 kHz | Auto Mode |
| VOUT = 5 V | fSW = 400 kHz | Auto Mode |
| VOUT = 5 V | fSW = 1000 kHz | Auto Mode |
| VOUT = 5 V | fSW = 2200 kHz | Auto Mode |
| VOUT = 12 V | fSW = 500 kHz | Auto Mode |
| VOUT = 24 V | fSW = 300 kHz | Auto Mode |
| VOUT = 5 V | fSW = 500 kHz | Auto Mode |
| VOUT = 3.3 V | fSW = 400 kHz | Auto Mode |
| VOUT = 5 V | fSW = 400 kHz | Auto Mode |
| VOUT = 5 V | fSW = 1000 kHz | Auto Mode |
| VOUT = 5 V | fSW = 2200 kHz | Auto Mode |
| VOUT = 12 V | fSW = 500 kHz | Auto Mode |
| VOUT = 24 V | fSW = 300 kHz | Auto Mode |
| VOUT = 5 V | fSW = 500 kHz | Auto Mode |
| VOUT = 3.3 V | fSW = 400 kHz | Auto Mode |
| VOUT = 5 V | fSW = 1000 kHz | Auto Mode |
| VOUT = 5 V | fSW = 500 kHz | Auto Mode |
| VOUT = 24 V | fSW = 300 kHz | Auto Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| No Load | FPWM Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| 100-mA Load | FPWM Mode |
| VIN = 12 V | VOUT = 3.3 V | fSW = 500 kHz |
| No Load | FPWM Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| No Load | FPWM Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| 3.5-A Load |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| 2.5-A Load |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| No Load | FPWM Mode |
| VIN = 12 V | VOUT = 3.3 V | fSW = 500 kHz |
| 10 mA to 3.5 A to 10 mA | Auto Mode | |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| 10 mA to 3.5 A to 10 mA | Auto Mode | |
| VIN = 12 V | VOUT = 5 V | fSW = 1000 kHz |
| 10 mA to 3.5 A to 10 mA | Auto Mode | |
| VIN = 12 V | VOUT = 5 V | fSW = 2200 kHz |
| 10 mA to 3.5 A to 10 mA | Auto Mode | |
| VIN = 24 V | VOUT = 12 V | fSW = 500 kHz |
| 10 mA to 3.5 A to 10 mA | Auto Mode | |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| 10 mA to 2.5 A to 10 mA | Auto Mode | |
| VIN = 13.5 V | VOUT = 5 V | IOUT = 3.5 A |
| fSW = 400 kHz | ||
| LM76003EVM-400k, CFLT = 4 × 2.2 µF, LFLT = 1 µH | ||
| VIN = 13.5 V | VOUT = 5 V | IOUT = 3.5 A |
| fSW = 400 kHz | ||
| LM76003EVM-400k, CFLT = 4 × 2.2 µF, LFLT = 1 µH | ||
| VOUT = 3.3 V | fSW = 400 kHz | FPWM Mode |
| VOUT = 5 V | fSW = 400 kHz | FPWM Mode |
| VOUT = 5 V | fSW = 1000 kHz | FPWM Mode | |
| VOUT = 5 V | fSW = 2200 kHz | FPWM Mode |
| VOUT = 12 V | fSW = 500 kHz | FPWM Mode |
| VOUT = 24 V | fSW = 300 kHz | FPWM Mode |
| VOUT = 5 V | fSW = 500 kHz | FPWM Mode |
| VOUT = 3.3 V | fSW = 400 kHz | FPWM Mode |
| VOUT = 5 V | fSW = 400 kHz | FPWM Mode |
| VOUT = 5 V | fSW = 1000 kHz | FPWM Mode |
| VOUT = 5 V | fSW = 2200 kHz | FPWM Mode |
| VOUT = 12 V | fSW = 500 kHz | FPWM Mode |
| VOUT = 24 V | fSW = 300 kHz | FPWM Mode |
| VOUT = 5 V | fSW = 500 kHz | FPWM Mode |
| VOUT = 5 V | fSW = 400 kHz | Auto Mode |
| VOUT = 5 V | fSW = 2200 kHz | Auto Mode |
| VOUT = 12 V | fSW = 500 kHz | Auto Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| No Load | Auto Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| 100-mA Load | Auto Mode |
| VIN = 12 V | VOUT = 3.3 V | fSW = 500 kHz |
| No Load | Auto Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| No Load | Auto Mode |
| VIN = 12 V | VOUT = 3.3 V | fSW = 500 kHz |
| 3.5-A Load |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| No Load | Auto Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| No Load | Auto Mode |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| Auto Mode |
| VIN = 12 V | VOUT = 3.3 V | fSW = 500 kHz |
| 10 mA to 3.5 A to 10 mA | FPWM Mode | |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| 10 mA to 3.5 A to 10 mA | FPWM Mode | |
| VIN = 12 V | VOUT = 5 V | fSW = 1000 kHz |
| 10 mA to 3.5 A to 10 mA | FPWM Mode | |
| VIN = 12 V | VOUT = 5 V | fSW = 2200 kHz |
| 10 mA to 3.5 A to 10 mA | FPWM Mode | |
| VIN = 24 V | VOUT = 12 V | fSW = 500 kHz |
| 10 mA to 3.5 A to 10 mA | FPWM Mode | |
| VIN = 12 V | VOUT = 5 V | fSW = 500 kHz |
| 10 mA to 2.5 A to 10 mA | FPWM Mode | |
| VIN = 13.5 V | VOUT = 5 V | IOUT = 3.5 A |
| fSW = 400 kHz | ||
| LM76003EVM-400k, CFLT = 4 × 2.2 µF, LFLT = 1 µH | ||
| VIN = 13.5 V | VOUT = 5 V | IOUT = 3.5 A |
| fSW = 400 kHz | ||
| LM76003EVM-400k, CFLT = 4 × 2.2 µF, LFLT = 1 µH | ||