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ZHCSCN3B June 2014 – March 2018 LM46000

PRODUCTION DATA.

封裝選項

機械數據 (封裝 | 引腳)

PWP|16
- MPDS371C

散熱焊盤機械數據 (封裝 | 引腳)

PWP|16
- PPTD297B

訂購信息

8.2.3 Application Performance Curves

See Table 2 for bill of materials for each V_OUT and F_S combination. Unless otherwise stated, application performance curves were taken at T_A = 25°C.

V_OUT = 3.3 V

F_S = 500 kHz

V_IN = 24 V

Figure 47. BOM for V_OUT = 3.3 V F_S = 500 kHz

V_OUT = 3.3 V

F_S = 500 kHz

Figure 49. Output Voltage Regulation

LM46000 24VIN_3p3VO_500k_50mATO500mA.gif

V_OUT = 3.3 V

F_S = 500 kHz

V_IN = 24 V

Figure 51. Load Transient Between 0.05 A and 0.5 A

V_OUT = 5 V

F_S = 500 kHz

V_IN = 24 V

Figure 53. BOM for V_OUT = 5 V, F_S = 500 kHz

V_OUT = 5 V

F_S = 500 kHz

Figure 55. Output Voltage Regulation

V_OUT = 5 V

F_S = 500 kHz

V_IN = 24 V

Figure 57. Load Transient Between 0.05 A and 0.5 A

V_OUT = 5 V

F_S = 200 kHz

V_IN = 24 V

Figure 59. BOM for V_OUT = 5 V, F_S = 200 kHz

V_OUT = 5 V

F_S = 200 kHz

Figure 61. Output Voltage Regulation

V_OUT = 5 V

F_S = 200 kHz

V_IN = 24 V

Figure 63. Load Transient Between 0.05 A and 0.5A

V_OUT = 5 V

F_S = 1 MHz

V_IN = 24 V

Figure 65. BOM for V_OUT = 5 V, F_S = 1 MHz

V_OUT = 5 V

F_S = 1 MHz

Figure 67. Output Voltage Regulation

V_OUT = 5 V

F_S = 1 MHz

V_IN = 24 V

Figure 69. Load Transient Between 0.05 A and 0.5 A

V_OUT = 12 V

F_S = 500 kHz

V_IN = 24 V

Figure 71. BOM for V_OUT = 12 V, F_S = 500 kHz

V_OUT = 12 V

F_S = 500 kHz

Figure 73. Output Voltage Regulation

V_OUT = 12 V

F_S = 500 kHz

V_IN = 24 V

Figure 75. Load Transient Between 0.05 A and 0.5 A

V_OUT = 24 V

F_S = 500 kHz

V_IN = 48 V

Figure 77. BOM for V_OUT = 24 V, F_S = 500 kHz

V_OUT = 24 V

F_S = 500 kHz

Figure 79. Output Voltage Regulation

V_OUT = 24 V

F_S = 500 kHz

V_IN = 48 V

Figure 81. Load Transient Between 0.05 A and 0.5 A

V_OUT = 3.3 V

F_S = 500 kHz

R_θJA = 20°C/W

Figure 83. Derating Curve With R_θJA = 20°C/W

V_OUT = 5 V

F_S = 200 kHz

R_θJA = 20°C/W

Figure 85. Derating Curve With R_θJA = 20°C/W

V_OUT = 3.3 V

F_S = 500 kHz

Figure 87. Switching Frequency vs I_OUT in PFM Operation

V_OUT = 3.3 V

F_S = 500 kHz

I_OUT = 0.5A

Figure 89. Switching Waveform in CCM Operation

V_OUT = 3.3 V

F_S = 500 kHz

I_OUT = 0 mA

Figure 91. Switching Waveform in PFM Operation

V_IN = 24 V

V_OUT = 3.3 V

R_LOAD = 13.2 Ω

Figure 93. Start-up Into Half Load With Internal Soft-Start Rate

V_IN = 24 V

V_OUT = 3.3 V

R_LOAD = Open

Figure 95. Start-up Into 1.0 V Pre-biased Voltage

LM46000 12TO48V_3V3_500k_500mA_1V1us.gif

V_OUT = 3.3 V

F_S = 500 kHz

I_OUT = 0.5A

Figure 97. Line Transient: V_IN Transitions Between 12 V and 48 V

LM46000 24VIN_3p3VO_500k_500mA_SHORT_RECOVERY.gif

V_OUT = 3.3 V

F_S = 500 kHz

V_IN = 24 V

Figure 99. Short-Circuit Protection and Recover

V_OUT = 3.3 V

F_S = 500 kHz

Figure 48. Efficiency

V_OUT = 3.3 V

F_S = 500 kHz

Figure 50. Dropout Curve

V_OUT = 3.3 V

F_S = 500 kHz

V_IN = 24 V

Figure 52. Derating Curve

V_OUT = 5 V

F_S = 500 kHz

Figure 54. Efficiency

V_OUT = 5 V

F_S = 500 kHz

Figure 56. Dropout Curve

V_OUT = 5 V

F_S = 500 kHz

V_IN = 24 V

Figure 58. Derating Curve

V_OUT = 5 V

F_S = 200 kHz

Figure 60. Efficiency

V_OUT = 5 V

F_S = 200 kHz

Figure 62. Dropout Curve

V_OUT = 5 V

F_S = 200 kHz

V_IN = 24 V

Figure 64. Derating Curve

V_OUT = 5 V

F_S = 1 MHz

V_IN = 24 V

Figure 66. Efficiency

V_OUT = 5 V

F_S = 1 MHz

Figure 68. Dropout Curve

V_OUT = 5 V

F_S = 1 MHz

V_IN = 24 V

Figure 70. Derating Curve

V_OUT = 12 V

F_S = 500 kHz

Figure 72. Efficiency

V_OUT = 12 V

F_S = 500 kHz

Figure 74. Dropout Curve

V_OUT = 12 V

F_S = 500 kHz

V_IN = 24 V

Figure 76. Derating Curve

V_OUT = 24 V

F_S = 500 kHz

Figure 78. Efficiency

V_OUT = 24 V

F_S = 500 kHz

Figure 80. Dropout Curve

V_OUT = 24 V

F_S = 500 kHz

V_IN = 48 V

Figure 82. Derating Curve

V_OUT = 5 V

F_S = 500 kHz

R_θJA = 20°C/W

Figure 84. Derating Curve With R_θJA = 20°C/W

V_OUT = 5 V

F_S = 1 MHz

R_θJA = 20°C/W

Figure 86. Derating Curve With R_θJA = 20°C/W

V_OUT = 5 V

F_S = 1 MHz

Figure 88. Switching Frequency vs I_OUT in PFM Operation

V_OUT = 3.3 V

F_S = 500 kHz

I_OUT = 40 mA

Figure 90. Switching Waveform in DCM Operation

V_IN = 24 V

V_OUT = 3.3 V

R_LOAD = 6.6 Ω

Figure 92. Start-up Into Full Load With Internal Soft-Start Rate

V_IN = 24 V

V_OUT = 3.3 V

R_LOAD = 33 Ω

Figure 94. Start-up Into 100 mA With Internal Soft-Start Rate

LM46000 24VIN_12VO_500k_500mA_33nFCss.gif

V_IN = 24 V

V_OUT = 12 V

R_LOAD = 24 Ω

Figure 96. Start-up With External Capacitor C_SS = 33 nF

LM46000 12TO48V_3V3_500k_250mA_1V1us.gif

V_OUT = 3.3 V

F_S = 500 kHz

I_OUT = 0.25 A

Figure 98. Line Transient: V_IN Transitions Between 12 V and 48 V