SNVS671 Data sheet | 德州仪器 TI.com.cn

SNVS671F February 2011 – May 2019 LM21212-1

PRODUCTION DATA.

封装选项

机械数据 (封装 | 引脚)

PWP|20
- MHTS001H

散热焊盘机械数据 (封装 | 引脚)

PWP|20
- PPTD299A

订购信息

7.6 Typical Performance Characteristics

Unless otherwise specified: V_VIN = 5V, V_OUT = 1.2V, L= 0.56µH (1.8mΩ R_DCR), C_SS = 33nF, f_SW = 1 MHz, T_A = 25°C for efficiency curves, loop gain plots and waveforms, and T_J = 25°C for all others.

Figure 1. Efficiency

V_OUT = 2.5 V

f_SW= 300 KHz

Inductor P/N Ser2010-102mld

Figure 3. Efficiency

Figure 5. Line Regulation

Figure 7. Non-Switching I_AVIN and I_PVIN vs Temperature

Figure 9. Enable Threshold and Hysteresis vs Temperature

Figure 11. Enable Low Current vs Temperature

Figure 13. Minimum On-Time vs Temperature

Figure 15. Peak Current Limit vs Temperature

4 µs/DIV

Figure 17. Sync Signal Acquired

200 µs/DIV

Figure 19. Start-up With SS/TRK Open Circuit

100 µs/DIV

Figure 21. Output Overcurrent Condition

Figure 2. Efficiency

Figure 4. Load Regulation

Figure 6. Non-Switching I_QTOTAL vs V_IN

Figure 8. V_FB vs Temperature

Figure 10. UVLO Threshold and Hysteresis vs Temperature

Figure 12. OVP/UVP Threshold vs Temperature

Figure 14. FET Resistance vs Temperature


4 µs/DIV

Figure 16. Sync Signal Lost

2 ms/DIV

Figure 18. Start-up With Prebiased Output

200 ms/DIV

Figure 20. Start-up With Applied Track Signal