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LM3351MMX 数据表(PDF) 2 Page - National Semiconductor (TI) |
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LM3351MMX 数据表(HTML) 2 Page - National Semiconductor (TI) |
2 / 8 page Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Input Voltage, Step-Down 5.5V Maximum Input Voltage, Step-Up 3.65V Power Dissipation (P D)(TA=25˚C, (Note 2)) 500 mW θ ja (Note 2) 250˚C/W Tj Max (Note 2) 150˚C Storage Temperature −65˚C to +150˚C Lead Temperature (Soldering, 10 secs) 260˚C ESD Susceptibility (Note 3) 2kV Not short circuit protected. Operating Conditions (Note 1) Ambient Temperature Range −40˚C to + 85˚C Electrical Characteristics 3/2 Step-Up Voltage Converter Specifications in standard type face are for T j = 25˚C, and those with boldface type apply over full operating temperature range. Unless otherwise specified, V in = 3.3V, VEnable = 3.3V, Iload = 50 mA, C1,C2,Cin and Cout = 1 µF. Symbol Parameter Conditions Typ (Note 4) Limits (Note 5) Units V outNL Output Voltage at No Load I load = 0 A 5.0 V V outFL Output Voltage at 50 mA I load =50mA 4.7 V V in Input Supply Voltage Range 3.3 V 2.5 V(Min) 3.65 V(Max) I Q1 Quiescent Current Shutdown Mode, V Enable = 0V, I load=0 A; Current into pin Vlow 0.025 µA 3 µA(Max) I Q2 Quiescent Current Normal Mode, I Ioad = 0A; Current into pin V Iow 1.1 mA 1.5 mA(Max) Z out Output Source Impedance I load =50mA 4.2 Ω 6.25 Ω (Max) f SW Switching Frequency (Note 6) 200 kHz 125 kHz(Min) 275 kHz(Max) V Enable Enable Threshold Voltage 1.7 V 1.0 V(Min) 2.5 V(Max) I Enable Leakage Current Current into ENABLE pin; ENABLE = 5V and all other pins at ground 0.025 µA 1 µA(Max) Pη Power Efficiency 95 % Electrical Characteristics 2/3 Step-Down Voltage Converter Specifications in standard type face are for T j = 25˚C, and those with boldface type apply over full operating temperature range. Unless otherwise specified, V high = 5V, VEnable = 5V, Iload = 50 mA, C1,C2,Cin and Cout = 1 µF. Symbol Parameter Conditions Typ (Note 4) Limits (Note 5) Units V outNL Output Voltage at No Load I load = 0 A 3.3 V V outFL Output Voltage at 50 mA I load =50 mA 3.2 V V in Input Supply Voltage Range 5V 2.2 V(Min) 5.5 V(Max) I Q1 Quiescent Current Shutdown Mode, V Enable = 0V, I load=0 A; Current into pin Vhigh 0.25 µA 3 µA(Max) www.national.com 2 |
类似零件编号 - LM3351MMX |
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类似说明 - LM3351MMX |
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