ZHCSQ77A 数据表 | 德州仪器 TI.com.cn

ZHCSQ77A February 2023 – September 2023 TPS25948

PRODUCTION DATA

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机械数据 (封装 | 引脚)

YWP|12
- MXCC020

散热焊盘机械数据 (封装 | 引脚)

订购信息

zhcsq77a_oa

7.7 Typical Characteristics

Figure 7-1 ON-Resistance vs Temperature

Figure 7-3 IN OFF state (UVLO) current vs Temperature

Figure 7-5 OUT Quiescent Current vs Temperature

Figure 7-7 OUT Shutdown Current vs Temperature

Figure 7-9 OUT Undervoltage Threshold vs Temperature

Figure 7-11 EN/UVLO Shutdown Threshold vs Temperature

Figure 7-13 Overcurrent Threshold vs ILM Resistor

Figure 7-15 Steady State Fixed Fast-Trip Current Threshold vs Temperature (TPS259481x)

Figure 7-17 RCB - Forward Regulation Voltage vs Temperature

Figure 7-19 RCB - Forward Comparator Threshold vs Temperature

Figure 7-21 Reverse Leakage Current During OFF-State

Figure 7-23 ITIMER Discharge Current vs Temperature

Figure 7-25 PG Low Voltage Without Input Supply vs Temperature

V_IN = 12 V, C_OUT = 220 μF, C_dVdt = Open, V_EN/UVLO stepped up to 2 V

Figure 7-27 Start Up With Enable

C_IN = 0.1 μF, C_OUT = 220 μF, C_dVdt = 10 nF, EN/UVLO connected to IN through resistor ladder, 12 V hot-plugged to IN

Figure 7-29 Input Hot-Plug

V_IN = 12 V, C_OUT = 220 μF, R_OUT = 2 Ω, C_dVdt = 3300 pF, V_EN/UVLO stepped up to 2 V

Figure 7-31 Inrush Current With Resistive and Capacitive Load

V_IN Overvoltage threshold set to 20 V, V_IN ramped up from 12 V to 23 V

Figure 7-33 Overvoltage Lockout Response

V_IN = 12 V, C_ITIMER = 22 nF, C_OUT = 220 μF, I_LIM set to 4.5 A, I_OUT stepped from 3 A → 9 A

Figure 7-35 Active Current Limit Response Followed by TSD

V_IN = 12 V, I_LIM set to 9 A, V_EN/UVLO = 2 V, OUT stepped from Open → Short-circuit to GND

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

V_IN = 22 V, OUT short-circuit to GND, I_LIM set to 9 A, V_EN/UVLO stepped from 0 V to 2 V

Figure 7-39 Power Up Into Short-Circuit

Figure 7-2 IN Quiescent Current vs Temperature

Figure 7-4 IN Shutdown Current vs Temperature

Figure 7-6 OUT OFF State (UVLO) Current vs Temperature

Figure 7-8 IN Undervoltage Threshold vs Temperature

Figure 7-10 EN/UVLO FET Turn OFF Threshold vs Temperature

Figure 7-12 OVLO Threshold vs Temperature

Figure 7-14 Steady State Scalable Fast-trip Threshold: Current Limit Threshold (I_LIM) Ratio vs Temperature (TPS259480x/2x)

Figure 7-16 Steady State Fixed Fast-Trip Current Threshold vs Temperature (TPS259480x/2x)

Figure 7-18 RCB - Reverse Comparator Threshold vs Temperature

Figure 7-20 OUT Leakage Current During ON-State Reverse Current Blocking

Figure 7-22 ITIMER Discharge Differential Voltage Threshold vs Temperature

Figure 7-24 DVDT Charging Current vs Temperature

Figure 7-26 Time to Thermal Shut-Down During Inrush State

V_EN/UVLO = 2 V, C_OUT = 220 μF, C_dVdt = 10 nF, V_IN ramped up to 12 V

Figure 7-28 Start Up With Supply

V_IN = 12 V, C_OUT = 220 μF, C_dVdt = 10 nF, V_EN/UVLO stepped up to 2 V

Figure 7-30 Inrush Current With Capacitive Load

V_IN = 12 V, C_OUT = 690 μF, R_OUT = 4 Ω, C_dVdt = 3300 pF, V_EN/UVLO stepped up to 2 V

Figure 7-32 Inrush Current With Resistive and Capacitive Load

V_IN = 12 V, C_ITIMER = 22 nF, C_OUT = 220 μF, I_LIM set to 4.5 A, I_OUT ramped from 3 A → 8 A→ 3 A within 9 ms

Figure 7-34 Transient Overcurrent Blanking Timer Response

V_IN = 12 V, I_LIM set to 9 A, V_EN/UVLO = 2 V, 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, I_LIM set to 4.5 A, V_EN/UVLO stepped from 0 V to 2 V

Figure 7-38 Power Up Into Short-Circuit