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LTC3604EMSE#PBF

Analog Devices · DC-DC Converters · MSOP-16-EP

LTC3604EMSE#PBF from Analog Devices, in a MSOP-16-EP. 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 SW output Switch node output connected to the SW side of the external inductor, with normal voltage swing from ground to PVIN.
2 SW output Switch node output connected to the SW side of the external inductor, with normal voltage swing from ground to PVIN.
3 PGND power_in Power ground; the (-) terminals of the input capacitor CIN and output capacitor COUT must be tied to it with a low-impedance connection.
4 PGND power_in Power ground; the (-) terminals of the input capacitor CIN and output capacitor COUT must be tied to it with a low-impedance connection.
5 BOOST power_out Boosted floating driver supply; the bootstrap capacitor (+) connects here and (-) to SW, with swing from a diode drop below INTVCC up to PVIN + INTVCC.
6 INTVCC power_out Internal 3.3V regulator output that must be decoupled to PGND with a low-ESR ceramic capacitor of 1µF or more.
7 VON input On-time voltage input that sets the on-time comparator trip point; connect to the regulated output, with a normal pin impedance of 180kΩ.
8 RT input Oscillator frequency program pin; a resistor between 80k and 400k to SGND sets 800kHz to 4MHz, and tying it to INTVCC defaults the frequency to 2MHz.
9 FB input Output voltage feedback input to the error amplifier, which compares it to the internal 0.6V reference through an external resistor divider.
10 ITH passive Error amplifier output and compensation pin for the regulator loop; connect to INTVCC to use the default internal compensation.
11 TRACK/SS input Output tracking and soft-start input; forcing below 0.6V overrides the internal reference, and an internal 1.4µA pull-up lets an external capacitor to ground set soft-start.
12 RUN input Regulator enable pin; a voltage above 1.25V enables the chip, below 1V shuts it down, and it must not be left floating.
13 VIN power_in Main power supply input that should be closely decoupled to PGND with a low-ESR capacitor of 10µF or more.
14 VIN power_in Main power supply input that should be closely decoupled to PGND with a low-ESR capacitor of 10µF or more.
15 MODE/SYNC input Mode selection and external synchronization input; tying to ground forces forced continuous operation, while floating or tying to INTVCC enables Burst Mode operation, and an external clock synchronizes the oscillator.
16 PGOOD output Open-drain power good output that is pulled to ground when FB is outside ±8% (typical) of the 0.6V reference and goes high impedance once FB is within ±5% (typical).
17 SGND power_in Signal ground exposed pad that must be soldered to the PCB for thermal contact in the MSE package and serves as the return for the feedback network, compensation network and RT resistor.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package MSOP-16-EP
Category Power Management ICs
Pins 17

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input supply range (VIN) VIN 3.6 15 V 3
Feedback reference voltage VFB 0.594 0.6 0.606 V l: full operating junction temperature range 3
Feedback pin input current IFB -30 30 nA VFB = 0.6V 3
Valley switch current limit ILIM 2.6 3.4 4.3 A 3
Minimum off-time tOFF(MIN) 40 60 ns VIN = 6V 3
Oscillator frequency fOSC 1.4 2 2.6 MHz VRT = INTVCC 3
Oscillator frequency fOSC 1.7 2 2.3 MHz RRT = 160k 3
Oscillator frequency fOSC 3.4 4 4.6 MHz RRT = 80k 3
Input DC supply current, forced continuous operation IQ 700 1000 µA MODE = 0V 3
Sleep current IQ 300 500 µA MODE = INTVCC, VFB > 0.6V 3
Shutdown current IQ 14 25 µA RUN = 0V 3
VIN overvoltage lockout threshold, rising VVIN(OV) 16.8 17.5 18 V l: VIN rising; full operating junction temperature range 3
VIN overvoltage lockout threshold, falling VVIN(OV) 15.8 16.5 17 V l: VIN falling; full operating junction temperature range 3
INTVCC voltage VINTVCC 3.13 3.3 3.45 V 3.6V < VIN < 15V 3
RUN threshold, rising VRUN 1.21 1.25 1.29 V RUN rising; l: full operating junction temperature range 3
RUN threshold, falling VRUN 0.97 1 1.03 V RUN falling; l: full operating junction temperature range 3
RUN leakage current IRUN(LKG) -3 0 3 µA VVIN = 15V 3
Internal soft-start time tSS 400 700 µs VFB from 10% to 90% full scale 3
TRACK pin voltage VFB_TRACK 0.28 0.3 0.315 mV TRACK = 0.3V 3
MODE input current IMODE -1.5 µA MODE = 0V 3
MODE input current IMODE 1.5 µA MODE = INTVCC 3
VIN pin voltage (absolute maximum) VIN -0.3 16 V 2
VIN transient voltage VIN 18 V Transient 2
BOOST pin voltage BOOST -0.3 18.6 V 2
BOOST-SW voltage BOOST-SW -0.3 3.6 V 2
INTVCC pin voltage INTVCC -0.3 3.6 V 2
ITH, RT pin voltage ITH, RT -0.3 V Printed maximum is INTVCC + 0.3V (not a fixed number) 2
MODE/SYNC, FB pin voltage MODE/SYNC, FB -0.3 V Printed maximum is INTVCC + 0.3V (not a fixed number) 2
TRACK/SS pin voltage TRACK/SS -0.3 V Printed maximum is INTVCC + 0.3V (not a fixed number) 2
PGOOD, VON pin voltage PGOOD, VON -0.3 16 V 2
SW, RUN pin voltage SW, RUN -0.3 V Printed maximum is VIN + 0.3V (not a fixed number) 2
SW source current (DC) ISW 3 A DC 2
Operating junction temperature range TJ -40 125 °C Notes 2, 3, 5 2
Storage temperature range TSTG -65 125 °C 2
Lead temperature (soldering, MSOP) TLEAD 300 °C 10 sec soldering, MSOP 2
Junction-to-ambient thermal resistance (MSE package) θJA 38 °C/W MSE (16-lead MSOP) package 2

CAD (KiCad official)

  • Symbol: LTC3604EMSE#PBF
  • Footprint: Package_SO:MSOP-16-1EP_3x4.039mm_P0.5mm_EP1.651x2.845mm
  • 3D model: MSOP-16-EP (KiCad packages3D, STEP)
  • 3D model files: ltc3604emse-pbf-etched.step / ltc3604emse-pbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ltc3604emse-pbf.step / ltc3604emse-pbf.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (26 pp, sha256 60bc02b63bd949a7, retrieved 2026-10-30, 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