PDF《应用领域》

16 ― μA VIH EN 高电压阈值 4.5V ≤ VIN ≤ 52V 2.3 ― ― V VIL EN 低电压阈值 4.5V ≤ VIN ≤ 52V ― ― 0.9 V 保护功能 VUVLO+ 输入电源开启电平 UVLO+ ― ― 4.2 V VUVLO- 输入电源关闭电平 UVLO- 3.4 ― ― V IOCP 过流保护阈值 ― ―

1 ― A TSHD 热关机阈值 OTP ―

150 ― °C TREC 热恢复温度 ― ―

125 ― °C 注:1. 最小输出电压受限制于最小开启的时间,100ns. 2. 最大输出电压受限制于最大占空比和接通阻值. Rev. 1.30

5 2018-08-02 典型性能特性 VIN=18V, VOUT=12.5V, L=15/22μH(HT7463A), L=33/47μH(HT7463B), TA=25o C, 除非另有说明 效率 vs. 负载 (HT7463A, VOUT =12.5V) 效率 vs. 负载 (HT7463A, VOUT =5.7V) 效率 vs. 负载 (HT7463A, VOUT =3.3V) 12.340 12.390 12.440 12.490 12.540 12.590 12.640

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600 Output Current (mA) Vout (V) 15uH 22uH 输出电压 vs. 负载 (HT7463A, VOUT=12.5V) 效率 vs. 负载 (HT7463B, VOUT =12.5V) 效率 vs. 负载 (HT7463B, VOUT =5.7V) 效率 vs. 负载 (HT7463B, VOUT =3.3V) 12.340 12.390 12.440 12.490 12.540 12.590 12.640

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600 Output Current (mA) Vout (V) 33uH 47uH 输出电压 vs. 负载 (HT7463B, VOUT =12.5V) Rev. 1.30

6 2018-08-02 典型性能特性(续) VIN=18V,VOUT=12.5V,L=22μH(HT7463A),L=47μH(HT7463B),TA=25o C,除非另有说明 5.560 5.610 5.660 5.710 5.760 5.810 5.860

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600 Output Current (mA) Vout (V) 15uH 22uH 输出电压 vs. 负载 (HT7463A, VOUT =5.7V) 3.260 3.270 3.280 3.290 3.300 3.310 3.320 3.330

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600 Output Current (mA) Vout (V) 15uH 22uH 输出电压 vs. 负载 (HT7463A, VOUT =3.3V) 12.480 12.485 12.490 12.495 12.500 12.505 12.510 12.515

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24 36 Vin (V) Vout (V) 15uH 22uH 输出电压 vs. 输入电压 (HT7463A, VOUT =12.5V, IOUT=300mA) 5.695 5.696 5.697 5.698 5.699 5.700 5.701 5.702 5.703 5.704 5.705

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18 24 Vin (V) Vout (V) 15uH 22uH 输出电压 vs. 输入电压 (HT7463A, VOUT =5.7V, IOUT=300mA) 5.560 5.610 5.660 5.710 5.760 5.810 5.860

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600 Output Current (mA) Vout (V) 33uH 47uH 输出电压 vs. 负载 (HT7463B, VOUT =5.7V) 3.260 3.270 3.280 3.290 3.300 3.310 3.320 3.330

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600 Output Current (mA) Vout (V) 33uH 47uH 输出电压 vs. 负载 (HT7463B, VOUT =3.3V) 12.480 12.485 12.490 12.495 12.500 12.505 12.510 12.515

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24 36 Vin (V) Vout (V) 33uH 47uH 输出电压 vs. 输入电压 (HT7463B, VOUT =12.5V, IOUT=300mA) 5.695 5.696 5.697 5.698 5.699 5.700 5.701 5.702 5.703 5.704 5.705

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18 24 Vin (V) Vout (V) 33uH 47uH 输出电压 vs. 输入电压 (HT7463B, VOUT =5.7V, IOUT=300mA) Rev. 1.30

7 2018-08-02 3.305 3.306 3.307 3.308 3.309 3.310 3.311 3.312 3.313 3.314 3.315

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18 24 Vin (V) Vout (V) 15uH 22uH 输出电压 vs. 输入电压 (HT7463A, VOUT =3.3V, IOUT=300mA)

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1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9

2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 VEN (V) Current Limit (A) HT7463A HT7463B IOCP vs. VEN (HT7463A 和HT7463B)

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100 125 Temperature (℃) OCP (mA) HT7463A HT7463B IOCP vs. TEMP (HT7463A 和HT7463B) 0.775 0.78 0.785 0.79 0.795 0.8 0.805 -40 -20

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100 125 Temperature (℃) VFB (V) HT7463A HT7463B VFB vs. TEMP (HT7463A 和HT7463B) 3.305 3.306 3.307 3.308 3.309 3.310 3.311 3.312 3.313 3.314 3.315

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18 24 Vin (V) Vout (V) 33uH 47uH 输出电压 vs. 输入电压 (HT7463B, VOUT =3.3V, IOUT=300mA)