ZHCSOF9B 数据表 | 德州仪器 TI.com.cn

ZHCSOF9B april 2022 – june 2023 TPS25981

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RPW|10
- MPQF568

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7.8 Typical Characteristics

Figure 7-2 ON-Resistance vs Supply Voltage (T_A = 25°C)

Figure 7-4 IN Quiescent Current vs Temperature

Figure 7-6 IN Shutdown Current vs Temperature

Figure 7-8 EN/UVLO Rising Threshold vs Temperature

Figure 7-10 EN/UVLO Shutdown Falling Threshold vs Temperature

Figure 7-12 OVLO Falling Threshold vs Temperature

Figure 7-14 Overcurrent Threshold Accuracy (Across Process, Voltage and Temperature)

Figure 7-16 Fixed Fast-Trip Threshold vs Temperature

Figure 7-18 ITIMER Discharge Differential Voltage Threshold vs Temperature

Figure 7-20 ITIMER Internal Pullup Voltage vs Temperature

Figure 7-22 PG Pin Voltage vs Temperature (VIN = 0 V)

Figure 7-24 FLT Pin Leakage Current vs Temperature

Figure 7-26 Time to Thermal Shutdown During Inrush State

V_IN = 12 V, C_OUT = 10 μF, C_dVdt = Open, V_EN/UVLO stepped up to 3.3 V

Figure 7-28 Start-Up with Enable

C_OUT = 220 μF, C_dVdt = 15 nF, EN/UVLO connected to IN through resistor ladder, 12 V hot-plugged to IN

Figure 7-30 Input Hot-Plug

V_IN = 12 V, C_OUT = 220 μF, R_OUT = 5 Ω, C_dVdt = 3300 pF, V_EN/UVLO stepped up to 1.4 V

Figure 7-32 Inrush Current with Resistive and Capacitive Load

V_IN = 12 V, C_ITIMER = 1.5 nF, R_ILM = 649 Ω, I_OUT ramped from 8 A → 14 A→ 8 A within 1 ms

Figure 7-34 Transient Overcurrent Blanking Timer Response

V_IN = 12 V, R_ILM = 649 Ω, OUT stepped from Open → Short-circuit to GND

Figure 7-36 Output Short-Circuit During Steady-State

V_IN = 12 V, OUT short-circuit to GND, R_ILM = 649 Ω, V_EN/UVLO stepped from 0 V to 3.3 V

Figure 7-38 Power Up into Short Circuit

Figure 7-3 ON-Resistance vs Temperature (I_OUT = 3 A)

Figure 7-5 IN OFF State (UVLO) Current vs Temperature

Figure 7-7 IN Undervoltage Threshold vs Temperature

Figure 7-9 EN/UVLO Falling Threshold vs Temperature

Figure 7-11 OVLO Rising Threshold vs Temperature

Figure 7-13 Overcurrent Threshold vs ILM Resistor

Figure 7-15 Scalable Fast-Trip Threshold: Current Limit Threshold (I_LIM) Ratio vs Temperature

Figure 7-17 Analog Current Monitor Gain Accuracy

Figure 7-19 ITIMER Discharge Current vs Temperature

Figure 7-21 DVDT Charging Current vs Temperature

Figure 7-23 FLT Pin Pulldown Resistance vs Temperature

Figure 7-25 Quick Output Discharge Resistance vs Temperature

Figure 7-27 Time to Thermal Shutdown During Steady-State

V_EN/UVLO = 3.3 V, C_OUT = 10 μF, C_dVdt = Open, V_IN ramped up to 12 V

Figure 7-29 Start-Up with Supply

V_IN = 12 V, C_OUT = 220 μF, C_dVdt = 3300 pF, V_EN/UVLO stepped up to 1.4 V

Figure 7-31 Inrush Current with Capacitive Load

V_IN Overvoltage threshold set to 13.6 V using resistor ladder connected to OVLO pin, V_IN ramped up from 12 V to 16 V

Figure 7-33 Overvoltage Lockout Response

V_IN = 12 V, C_ITIMER = 1.5 nF, R_ILM = 649 Ω, I_OUT ramped from 4 A → 13 A

Figure 7-35 Circuit-Breaker Response

V_IN = 12 V, R_ILM = 649 Ω, OUT stepped from Open → Short-circuit to GND

Figure 7-37 Output Short-Circuit During Steady-State (Zoomed In)