ZHCS553J January 2010 – October 2015 LMZ14202
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Application
- 8.2.1 Design Requirements
- 8.2.2 Detailed Design Procedure
- 8.2.3 Application Curves
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)(2)| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| VIN, RON to GND | –0.3 | 43.5 | V | |
| EN, FB, SS to GND | –0.3 | 7 | V | |
| TJ | Junction temperature | 150 | °C | |
| Peak reflow case temperature (30 s) | 245 | °C | ||
| Tstg | Storage temperature | –65 | 150 | °C |
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) For soldering specifications, refer to the following document: www.ti.com/lit/snoa549c
6.2 ESD Ratings
| VALUE | UNIT | |||
|---|---|---|---|---|
| V(ESD) | Electrostatic discharge | Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±2000 | V |
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| VIN | Input voltage | 6 | 42 | V |
| EN | Enable voltage | 0 | 6.5 | V |
| TJ | Junction temperature | −40 | 125 | °C |
6.4 Thermal Information
| THERMAL METRIC(1) | LMZ14202 | UNIT | ||
|---|---|---|---|---|
| NDW (TO-PMOD) |
||||
| 7 PINS | ||||
| RθJA | Junction-to-ambient thermal resistance | 4-layer JEDEC Printed circuit board, 100 vias, No air flow | 19.3 | °C/W |
| 2-layer JEDEC Printed circuit board, No air flow | 21.5 | °C/W | ||
| RθJC(top) | Junction-to-case (top) thermal resistance | No air flow | 1.9 | °C/W |
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.
6.5 Electrical Characteristics
Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of –40°C to +125°C. Minimum and maximum limits are ensured through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following conditions apply: VVIN = 24 V, VVOUT = 3.3 V| PARAMETER | TEST CONDITIONS | MIN(1) | TYP(2) | MAX(1) | UNIT | ||
|---|---|---|---|---|---|---|---|
| ENABLE CONTROL(3) | |||||||
| VEN | EN threshold trip point | VEN rising | 1.18 | V | |||
| –40°C ≤ TJ ≤ 125°C | 1.1 | 1.25 | |||||
| VEN-HYS | EN threshold hysteresis | VEN falling | 90 | mV | |||
| SOFT-START | |||||||
| ISS | SS source current | VSS = 0 V | 8 | µA | |||
| –40°C ≤ TJ ≤ 125°C | 5 | 11 | |||||
| ISS-DIS | SS discharge current | -200 | µA | ||||
| CURRENT LIMIT | |||||||
| ICL | Current limit threshold | d.c. average | 2.6 | A | |||
| –40°C ≤ TJ ≤ 125°C | 2.3 | 3.65 | |||||
| ON/OFF TIMER | |||||||
| tON-MIN | ON timer minimum pulse width | 150 | ns | ||||
| tOFF | OFF timer pulse width | 260 | ns | ||||
| REGULATION AND OVERVOLTAGE COMPARATOR | |||||||
| VFB | In-regulation feedback voltage | VSS > 0.8 V, IO = 2 A | 0.795 | V | |||
| –40°C ≤ TJ ≤ 125°C | 0.775 | 0.815 | |||||
| VSS >+ 0.8 V, IO = 10 mA | 0.786 | 0.802 | 0.818 | V | |||
| VFB-OV | Feedback over-voltage protection threshold | 0.92 | V | ||||
| IFB | Feedback input bias current | 5 | nA | ||||
| IQ | Non-switching input current | VFB = 0.86 V | 1 | mA | |||
| ISD | Shutdown quiescent current | VEN = 0 V | 25 | μA | |||
| THERMAL CHARACTERISTICS | |||||||
| TSD | Thermal shutdown | Rising | 165 | °C | |||
| TSD-HYST | Thermal shutdown hysteresis | Falling | 15 | °C | |||
| PERFORMANCE PARAMETERS | |||||||
| ΔVO | Output voltage ripple | 8 | mVP-P | ||||
| ΔVO/ΔVIN | Line regulation | 12 V ≤ VVIN ≤ 42 V, IO = 2 A | 0.01% | ||||
| ΔVO/IOUT | Load regulation | VVIN = 24 V | 1.5 | mV/A | |||
| η | Efficiency | VVIN = 24 V, VO = 3.3 V, IO = 1 A | 86% | ||||
| VVIN = 24 V, VO = 3.3 V, IO = 2 A | 85% | ||||||
(1) Minimum and maximum limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely parametric norm.
(3) EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See AN-2024 LMZ1420x / LMZ1200x Evaluation Board (SNVA422) and layout for information on device under test.
6.6 Typical Characteristics
Unless otherwise specified, the following conditions apply: VVIN = 24 V; CIN = 10 µF, X7R ceramic; CO = 100 µF X7R ceramic; TA = 25°C.
Figure 1. Efficiency 6-V Input
Figure 3. Efficiency 12-V Input
Figure 5. Efficiency 24-V Input
Figure 7. Efficiency 36-V Input at 25°C
Figure 9. Efficiency 42-V Input
Figure 11. Efficiency 6-V Input, TA = 85°C
Figure 13. Efficiency 8 V Input, TA = 85°C
Figure 15. Efficiency 12-V Input, TA = 85°C
Figure 17. Efficiency 24-V Input, TA = 85°C
Figure 19. Efficiency 36-V Input, TA = 85°C
Figure 21. Efficiency 42-V Input, TA = 85°C
Figure 23. Line and Load Regulation
Figure 25. Output RippleVIN = 24 V, VO = 3.3 V, 2 A, BW = 200 MHz
Figure 27. Thermal Derating, VOUT = 3.3 V
Figure 29. Current Limit, VOUT = 3.3 V,
Figure 2. Dissipation 6-V Input
Figure 4. Dissipation 12-V Input
Figure 6. Dissipation 24-V Input
Figure 8. Dissipation 36-V Input
Figure 10. Dissipation 42-V Input
Figure 12. Dissipation 6-V Input, TA = 85°C
Figure 14. Dissipation 8-V Input, TA = 85°C
Figure 16. Dissipation 12-V Input, TA = 85°C
Figure 18. Dissipation 24-V Input, TA = 85°C
Figure 20. Dissipation 36-V Input, TA = 85°C
Figure 22. Dissipation 42-V Input, TA = 85°C
Figure 24. Line and Load Regulation, TA = 85°C
Figure 26. Transient ResponseVIN = 24 V, VO = 3.3 V, 0.6-A to 2-A Step
Figure 28. Current Limit, VOUT = 3.3 V
Figure 30. Current Limit, VOUT = 3.3 V, TA = 85°C