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LTM4601IV-PBF Datasheet(PDF) 8 Page - Linear Technology |
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LTM4601IV-PBF Datasheet(HTML) 8 Page - Linear Technology |
8 / 28 page LTM4601/LTM4601-1 8 4601f SI PLIFIED BLOCK DIAGRA Figure 1. Simplified LTM4601/LTM4601-1 Block Diagram + INTERNAL COMP SGND COMP PGOOD RUN VOUT_LCL >2V = ON <0.9V = OFF MAX = 5V MARG1 MARG0 MPGM PLLIN CSS INTVCC DRVCC TRACK/SS VFB fSET 50k 39.2k RSET 40.2k 50k 60.4k VOUT 1M (50 Ω, LTM4601-1) 5.1V ZENER POWER CONTROL Q1 VIN 4.5V TO 20V VOUT 1.5V 12A Q2 10k 10k 10k NOT INCLUDED IN THE LTM4601-1 VOSNS – = NC1 VOSNS + = NC2 DIFFVOUT = NC3 50k 10k INTVCC 22 µF 1.5 µF CIN + COUT PGND VOSNS – VOSNS + DIFFVOUT 4601 F01 4.7 µF MARG0 (Pin C12): This pin is the LSB logic input for the margining function. Together with the MARG1 pin will determine if margin high, margin low or no margin state is applied. The pin has an internal pull-down resistor of 50k. See Applications Information. MARG1 (Pin D12): This pin is the MSB logic input for the margining function. Together with the MARG0 pin will determine if margin high, margin low or no margin state is applied. The pin has an internal pull-down resistor of 50k. See Applications Information. SGND (Pin H12): Signal Ground. This pin connects to PGND at output capacitor point. COMP (Pin A11): Current Control Threshold and Error Amplifier Compensation Point. The current comparator threshold increases with this control voltage. The voltage ranges from 0V to 2.4V with 0.7V corresponding to zero sense voltage (zero current). PGOOD (Pin G12): Output Voltage Power Good Indicator. Open-drain logic output that is pulled to ground when the output voltage is not within ±10% of the regulation point, after a 25µs power bad mask timer expires. RUN (Pin A10): Run Control Pin. A voltage above 1.9V will turn on the module, and when below 1.9V, will turn off the module. A programmable UVLO function can be accomplished with a resistor from VIN to this pin that has a 5.1V zener to ground. Maximum pin voltage is 5V. Limit current into the RUN pin to less than 1mA. VOUT_LCL (Pin L12): VOUT connects directly to this pin to bypass the remote sense amplifier, or DIFFVOUT con- nects to this pin when remote sense amplifier is used. VOUT_LCL can be connected to VOUT on the LTM4601-1, VOUT is internally connected to VOUT_LCL with 50Ω in the LTM4601-1. PI FU CTIO S (See Package Description for Pin Assignment) |
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