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ZHCSEQ3D February 2016 – December 2022 LM5165

PRODUCTION DATA

6.7 Typical Characteristics

Unless otherwise specified, V_IN = 12 V, V_OUT = 5 V. Please refer to Typical Applications for circuit designs.

5-V, 25-mA Design

L_F = 470 µH
C_OUT = 47 µF

F_SW(nom) = 100 kHz R_ILIM ≥ 100 kΩ

Figure 6-1 Converter Efficiency: 5 V, 25 mA, PFM

See schematic,
Figure 8-14

L_F = 47 µH
C_OUT = 10 µF

F_SW(nom) = 350 kHz R_ILIM = 56.2 kΩ

Figure 6-3 Converter Efficiency: 3.3 V, 50 mA, PFM

See schematic,
Figure 8-21

L_F = 47 µH
C_OUT = 10 µF

F_SW(nom) = 500 kHz R_ILIM = 24.9 kΩ

Figure 6-5 Converter Efficiency: 12 V, 75 mA, PFM

Figure 6-7 High-Side MOSFET On-State Resistance vs Input Voltage

Figure 6-9 Enable Threshold Voltage vs Temperature

LM5165X

Figure 6-11 VOUT Regulation Thresholds vs Temperature

Figure 6-13 PGOOD Thresholds vs Temperature

Figure 6-15 Peak Current Limits vs Input Voltage

Figure 6-17 COT One-Shot Timer T_ON vs Input Voltage

Figure 6-19 VIN Sleep and Shutdown Supply Current vs Temperature

R_RT = 75 kΩ

Figure 6-21 VIN Active Mode Supply Current vs Temperature

5-V, 150-mA Design

Figure 6-23 Full Load Switching Waveforms, COT

5-V, 150-mA Design

Figure 6-25 Full Load Start-Up, COT

5-V, 25-mA Design

Figure 6-27 Full Load Switching Waveforms, PFM

5-V, 25-mA Design

Figure 6-29 Full Load Start-Up, PFM

See schematic,
Figure 8-1

L_F = 220 µH
C_OUT = 22 µF

F_SW(nom) = 230 kHz R_RT = 133 kΩ

Figure 6-2 Converter Efficiency: 5 V, 150 mA, COT

See schematic,
Figure 8-26

L_F = 150 µH
C_OUT = 22 µF

F_SW(nom) = 160 kHz R_RT = 121 kΩ

Figure 6-4 Converter Efficiency: 3.3 V, 150 mA, COT

See schematic,
Figure 8-29

L_F = 150 µH
C_OUT = 10 µF

F_SW(nom) = 600 kHz R_RT = 143 kΩ

Figure 6-6 Converter Efficiency: 15 V, 150 mA, COT

Figure 6-8 Low-Side MOSFET On-State Resistance vs Input Voltage

Figure 6-10 Feedback Comparator Voltage vs Temperature

LM5165Y

Figure 6-12 VOUT Regulation Thresholds vs Temperature

Figure 6-14 Peak Current Limits vs Temperature

Figure 6-16 PGOOD and HYS Pulldown R_DS(on) vs Temperature

Figure 6-18 Internal V_IN UVLO Voltage vs Temperature

Figure 6-20 VIN Sleep and Shutdown Supply Current vs Input Voltage

R_RT = 75 kΩ

Figure 6-22 VIN Active Mode Supply Current vs Input Voltage

5-V, 150-mA Design

Figure 6-24 No Load Switching Waveforms, COT

5-V, 150-mA Design

Figure 6-26 Short Circuit, COT

5-V, 25-mA Design

Figure 6-28 No Load Switching Waveforms, PFM

5-V, 25-mA Design

Figure 6-30 Short Circuit, PFM

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