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LT8582EDKD#PBF

Analog Devices · DC-DC Converters · DFN-24-EP(4x7)

LT8582EDKD#PBF from Analog Devices, in a DFN-24-EP(4x7). 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 SWA1 output Master switch collector pin for channel 1, designed to handle a peak collector current of 1.7A (minimum), so keep the metal trace area connected to it small to reduce EMI.
2 VIN1 power_in Input supply pin for channel 1 that must be locally bypassed.
3 PG1 output Active-high open-drain power good output for channel 1 that is valid only when SHDN > 1.31V and VIN > 2.3V and requires a pull-up resistor; it indicates VFBX is within 4% of regulation (VFBX > 1.15V noninverting, VFBX < 65mV inverting).
4 GATE1 output PMOS gate drive pin for channel 1 that acts as a pull-down current source for output short-circuit protection or output disconnect, with a maximum pull-down current of 1mA at SS voltages above 550mV.
5 VC1 passive Error amplifier output for channel 1 to which the external compensation network is tied.
6 FBX1 input Positive and negative feedback pin for channel 1, connected to VOUT through a resistor set by the 1.204V feedback voltage and 83.3µA FBX bias current equations for noninverting or inverting converters.
7 FBX2 input Positive and negative feedback pin for channel 2, connected to VOUT through a resistor set by the 1.204V feedback voltage and 83.3µA FBX bias current equations for noninverting or inverting converters.
8 VC2 passive Error amplifier output for channel 2 to which the external compensation network is tied.
9 GATE2 output PMOS gate drive pin for channel 2 that acts as a pull-down current source for output short-circuit protection or output disconnect, with a maximum pull-down current of 1mA at SS voltages above 550mV.
10 PG2 output Active-high open-drain power good output for channel 2 that is valid only when SHDN > 1.31V and VIN > 2.3V and requires a pull-up resistor; it indicates VFBX is within 4% of regulation (VFBX > 1.15V noninverting, VFBX < 65mV inverting).
11 VIN2 power_in Input supply pin for channel 2 that must be locally bypassed.
12 SWA2 output Master switch collector pin for channel 2, designed to handle a peak collector current of 1.7A (minimum), so keep the metal trace area connected to it small to reduce EMI.
13 SWB2 output Slave switch collector pin for channel 2, designed to handle a peak collector current of 1.3A (minimum), so keep the metal trace area connected to it small to reduce EMI.
14 CLKOUT2 output Clock output for channel 2 that is in phase with the internal oscillator or SYNC pin, with a duty cycle that varies with junction temperature, and is only meant to drive capacitive loads up to 120pF.
15 SHDN2 input Shutdown pin for channel 2 that must be driven below 0.3V to disable the channel and above 1.31V (typical) to activate it and restart soft-start, and must not be floated.
16 RT2 passive Timing resistor pin for channel 2 where a resistor to ground sets the fixed free-running switching frequency, and the pin must not be floated.
17 SS2 passive Soft-start pin for channel 2 where a soft-start capacitor is placed; at start-up it is charged by a nominal 250k resistor to about 2.1V.
18 SYNC2 input Synchronization input for channel 2 where the clock high level must exceed 1.3V and the low level must be below 0.4V; driving it below 0.4V reverts channel 2 to its internal free-running clock.
19 SYNC1 input Synchronization input for channel 1 where the clock high level must exceed 1.3V and the low level must be below 0.4V; driving it below 0.4V reverts channel 1 to its internal free-running clock.
20 SS1 passive Soft-start pin for channel 1 where a soft-start capacitor is placed; at start-up it is charged by a nominal 250k resistor to about 2.1V.
21 RT1 passive Timing resistor pin for channel 1 where a resistor to ground sets the fixed free-running switching frequency, and the pin must not be floated.
22 SHDN1 input Shutdown pin for channel 1 that must be driven below 0.3V to disable the channel and above 1.31V (typical) to activate it and restart soft-start, and must not be floated.
23 CLKOUT1 output Clock output for channel 1 that is 180° out of phase with the internal oscillator or SYNC pin with a fixed ~50% duty cycle, and is only meant to drive capacitive loads up to 120pF.
24 SWB1 output Slave switch collector pin for channel 1, designed to handle a peak collector current of 1.3A (minimum), so keep the metal trace area connected to it small to reduce EMI.
25 GND power_in Ground exposed pad that must be soldered directly to the local ground plane.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package DFN-24-EP(4x7)
Category Power Management ICs
Pins 25

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
VIN1 Voltage -0.3 40 V 2
SWA1/SWB1 Voltage -0.4 42 V 2
RT1 Voltage -0.3 5 V 2
SS1 Voltage -0.3 2.5 V 2
FBX1 Voltage -0.3 5 V 2
VC1 Voltage -0.3 2 V 2
SHDN1 Voltage 40 V 2
SHDN1 Current -1 mA 2
SYNC1 Voltage -0.3 5.5 V 2
GATE1 Voltage -0.3 60 V 2
PG1 Voltage -0.3 40 V 2
PG1 Current -0.5 0.5 mA ±0.5mA as printed 2
Storage Temperature Range -65 150 °C 2
Operating Junction Temperature Range -40 125 °C LT8582E 2
Wide Input Range (Operating) VIN 2.5 22 V Operating; 40V maximum transient (Features) 1
Maximum Junction Temperature (TJMAX) TJMAX 125 °C 2
Minimum Input Voltage VIN 2.3 2.5 V 3
VIN Overvoltage Lockout 22.2 24.5 27 V 3
Positive Feedback Voltage 1.185 1.204 1.22 V 3
Negative Feedback Voltage 2 7 16 mV 3
Positive FBX Pin Bias Current 81 83.3 85 μA VFBX = Positive Feedback Voltage, Current into Pin 3
Negative FBX Pin Bias Current 81 83.3 85.5 μA VFBX = Negative Feedback Voltage, Current out of Pin 3
Quiescent Current 2.1 2.5 mA VSHDN = 2.5V, Not Switching 3
Quiescent Current in Shutdown 0 1 μA VSHDN = 0 3
Reference Line Regulation 0.01 0.05 %/V 2.5V ≤ VIN ≤ 20V 3
Switching Frequency fOSC 2.125 2.5 2.875 MHz RT = 31.6kΩ 3
Switching Frequency fOSC 170 200 230 kHz RT = 407kΩ 3
Switching Frequency Range 200 2500 kHz Free-Running or Synchronizing 3
SYNC High Level for Sync 1.3 V 3
SYNC Low Level for Sync 0.4 V 3
SYNC Clock Pulse Duty Cycle 20 80 % VSYNC = 0V to 2V 3
SWA Current Limit 1.8 2.4 3 A Minimum Duty Cycle 3
SWA Current Limit 1.3 1.8 2.5 A Maximum Duty Cycle 3
SWA FAULT Current Limit 2.2 2.8 3.5 A Minimum Duty Cycle 3
SWA FAULT Current Limit 1.6 2.3 3 A Maximum Duty Cycle 3
SWA + SWB Current Limit 3.3 4.3 5.4 A Minimum Duty Cycle, ISWB/ISWA = 0.79 3
SWA + SWB Current Limit 2.3 4.1 4.5 A Maximum Duty Cycle, ISWB/ISWA = 0.79 3
SWA + SWB FAULT Current Limit 4 5 6.3 A Minimum Duty Cycle, ISWB/ISWA = 0.79 3
SWA + SWB FAULT Current Limit 2.8 4 5.4 A Maximum Duty Cycle, ISWB/ISWA = 0.79 3
SS Charge Current 5.7 8.8 11.7 μA VSS = 30mV, Current Flows out of SS Pin 3
SS Discharge Current 5.7 8.8 11.7 μA Part in FAULT, VSS = 2.1V, Current Flows into SS Pin 3
SS High Detection Voltage 1.65 1.84 2 V Part in FAULT 3
SS Low Detection Voltage 15 55 100 mV Part Exiting FAULT 3
SHDN Minimum Input Voltage High 1.26 1.31 1.4 V Active Mode, SHDN Rising 3
SHDN Minimum Input Voltage High 1.21 1.27 1.35 V Active Mode, SHDN Falling 3
SHDN Input Voltage Low 0.3 V Shutdown Mode 3
SHDN Pin Bias Current 10.1 12.1 14.1 μA VSHDN = 3V 4
SHDN Pin Bias Current 45 65 μA VSHDN = 1.3V 4
SHDN Pin Bias Current 0 0.1 μA VSHDN = 0V 4
CLKOUT Output Voltage High 1.9 2.1 2.3 V 1mA out of CLKOUT Pin 4
CLKOUT Output Voltage Low 30 200 mV 1mA into CLKOUT Pin 4
GATE Pull-Down Current 0.8 1 1.2 mA VGATE = 3V 4
SWA Leakage Current 0.01 1 μA VSWA = 5V, VSHDN = 0 3
SWB Leakage Current 0.01 1 μA VSWB = 5V, VSHDN = 0 3
PG Threshold for Positive Feedback Voltage 1.09 1.15 1.2 V VFBX Rising 4
PG Threshold for Negative Feedback Voltage 20 65 120 mV VFBX Falling 4
PG Output Voltage Low 70 150 mV 100μA into PG Pin, VFBX = 1V 4
Thermal Resistance, Junction to Ambient θJA 34 °C/W 2
Thermal Resistance, Junction to Case θJC 7 °C/W 2

CAD (KiCad official)

  • Symbol: LT8582EDKD#PBF
  • Footprint: Package_DFN_QFN:DFN-24-1EP_4x7mm_P0.5mm_EP2.64x6.44mm
  • 3D model: DFN-24-EP(4x7) (KiCad packages3D, STEP)
  • 3D model files: lt8582edkd-pbf-etched.step / lt8582edkd-pbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lt8582edkd-pbf.step / lt8582edkd-pbf.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (36 pp, sha256 d4cd3a1bf42e8ed8, retrieved 2026-10-28, tier: manufacturer)
  • 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