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LTC3548EDD#TRPBF

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Analog Devices DC-DC Converters, DFN-10-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Contents

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LTC3548EDD#TRPBF

Analog Devices · DC-DC Converters · DFN-10-EP(3x3)

LTC3548EDD#TRPBF from Analog Devices, in a DFN-10-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VFB1 input Receives the feedback voltage from the external resistive divider across output 1; the nominal voltage for this pin is 0.6V.
2 RUN1 input Regulator 1 enable: forcing this pin to VIN enables regulator 1 and forcing it to GND shuts it down, and it must be driven and not left floating.
3 VIN power_in Main power supply input with an operating voltage range of 2.5V to 5.5V, which must be closely decoupled to GND.
4 SW1 output Regulator 1 switch node connection to the inductor; this pin swings from VIN to GND.
5 GND power_in Ground pin that is not connected internally and should be connected to PCB ground for optimum shielding.
6 MODE/SYNC input Mode selection and oscillator synchronization: tying it to VIN selects Burst Mode operation, tying it to GND selects pulse-skipping mode, it must not be left floating, and an external oscillator applied here synchronizes the frequency and automatically selects pulse-skipping mode.
7 SW2 output Regulator 2 switch node connection to the inductor; this pin swings from VIN to GND.
8 POR output Power-On Reset common-drain logic output that is pulled to GND when the output falls below -8.5% of regulation and goes high after 117ms when both channels are within regulation.
9 RUN2 input Regulator 2 enable: forcing this pin to VIN enables regulator 2 and forcing it to GND shuts it down, and it must be driven and not left floating.
10 VFB2 input Receives the feedback voltage from the external resistive divider across output 2; the nominal voltage for this pin is 0.6V.
11 GND power_in Exposed pad power ground that must be connected to the (-) terminal of COUT and CIN and to electrical ground on the PCB.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package DFN-10-EP(3x3)
Category Power Management (PMIC)
Pins 11

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating Voltage Range VIN 2.5 5.5 V 2
Feedback Pin Input Current IFB 30 nA 2
Feedback Voltage VFB 0.588 0.6 0.612 V 0°C ≤ TA ≤ 85°C 2
Feedback Voltage VFB 0.585 0.6 0.612 V -40°C ≤ TA ≤ 85°C 2
Reference Voltage Line Regulation ΔVLINEREG 0.3 0.5 %V VIN = 2.5V to 5.5V (Note 3) 2
Input DC Supply Current, Active Mode IS 700 950 μA VFB1 = VFB2 = 0.5V 3
Input DC Supply Current, Sleep Mode IS 40 60 μA VFB1 = VFB2 = 0.63V, MODE/SYNC = 3.6V 3
Input DC Supply Current, Shutdown IS 0.1 1 μA RUN = 0V, VIN = 5.5V, MODE/SYNC = 0V 3
Oscillator Frequency fOSC 1.8 2.25 2.7 MHz VFB = 0.6V 3
Peak Switch Current Limit Channel 1 ILIM 0.95 1.2 1.6 A VIN = 3V, VFB = 0.5V, Duty Cycle <35% 3
Peak Switch Current Limit Channel 2 ILIM 0.6 0.7 0.9 A VIN = 3V, VFB = 0.5V, Duty Cycle <35% 3
Top Switch On-Resistance RDS(ON) 0.35 0.45 Ω (Note 6) 3
Bottom Switch On-Resistance RDS(ON) 0.3 0.45 Ω (Note 6) 3
Switch Leakage Current ISW(LKG) 0.01 1 μA VIN = 5V, VRUN = 0V, VFB = 0V 3
Power-On Reset On-Resistance 100 200 Ω 3
RUN Threshold VRUN 0.3 1 1.5 V 3
RUN Leakage Current IRUN 0.01 1 μA 3
MODE Mode Threshold Low 0 0.5 V 3
Input Voltage (VIN Voltages) VIN -0.3 6 V 2
VFB1, VFB2 Voltages VFB1, VFB2 -0.3 V 2
RUN1, RUN2 Voltages RUN1, RUN2 -0.3 V 2
MODE/SYNC Voltage MODE/SYNC -0.3 V 2
SW1, SW2 Voltage SW1, SW2 -0.3 V 2
POR Voltage POR -0.3 6 V 2
Operating Temperature Range -40 85 °C Note 2 2
Junction Temperature 125 °C Note 5 2
Storage Temperature Range -65 125 °C 2
Junction-to-Ambient Thermal Resistance (DD package) θJA 45 °C/W DD package; exposed pad soldered to 4-layer board 2
Junction-to-Case Thermal Resistance (DD package) θJC 3 °C/W DD package 2

CAD (KiCad official)

  • Symbol: LTC3548EDD#TRPBF
  • Footprint: Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm
  • 3D model: DFN-10-EP(3x3) (KiCad packages3D, STEP)
  • 3D model files: ltc3548edd-trpbf-etched.step / ltc3548edd-trpbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ltc3548edd-trpbf.step / ltc3548edd-trpbf.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Analog Devices datasheet (16 pp, sha256 c2c75034252909bc, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF