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KP523201ALGA

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Kiwi Instruments DC-DC Converters, TSOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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KP523201ALGA

Kiwi Instruments · DC-DC Converters · TSOT-23-6

KP523201ALGA from Kiwi Instruments, in a TSOT-23-6. 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 GND power_in Power ground and signal ground.
2 SW passive Switch node; connect to the output inductor with a short, wide trace.
3 VIN power_in Input supply pin (4.5V to 17V operating); place a 100nF ceramic decoupling capacitor as close as possible to VIN and GND.
4 FB input Feedback pin; the output voltage is divided by resistors to this pin for output voltage setting and control (VREF 0.768V).
5 EN input Enable control; pull high or leave floating to enable, and a pull-up resistor of at least 100kΩ is required in series when tied to VIN; also adjusts the VIN UVLO threshold.
6 BST passive Charge-pump supply for the high-side MOSFET driver; connect a 100nF ceramic capacitor between BST and SW.

Key specifications

Parameter Value
Manufacturer Kiwi Instruments
Package TSOT-23-6
Category Power Supply Chip
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
VIN operating input voltage VIN 4.5 17 V 4
VIN shutdown current ISHDN(VIN) 2.5 6 µA VIN = 12 V, VEN = 0 V 4
VIN UVLO rising threshold VUVLO(R) 4 4.2 4.4 V VIN rising 4
VIN UVLO falling threshold VUVLO(F) 3.6 3.8 4 V VIN falling 4
EN rising threshold VEN(R) 1.2 1.28 V EN rising, switching enabled 4
EN falling threshold VEN(F) 1.02 1.14 V EN falling, switching disabled 4
EN pin sourcing current IEN(P) 0.95 1.14 1.5 µA VEN = 1.0 V 4
EN pin hysteresis current IEN(H) 2.3 2.73 3.81 µA 4
FB voltage VFB 0.76 0.768 0.776 V TJ = 25℃ 5
FB voltage VFB 0.757 0.768 0.779 V TJ = -40℃ to 125℃, VIN = 12 V 5
FB input leakage current IFB(LKG) -100 0 100 nA TJ = 25℃ 5
Internal soft-start time TSS 0.5 1 1.5 ms 10% VOUT to 90% VOUT 5
Valley current limit ILS(OC) 3 4 5 A VIN = 12 V 5
VIN voltage VIN -0.3 19 V 3
SW voltage, DC SW -0.3 19 V DC 3
SW voltage, transient SW -3 21 V Transient < 10 ns 3
VIN, SW, DC VIN-SW -0.3 19 V DC 3
VIN, SW, transient VIN-SW -3 21 V Transient < 10 ns 3
BOOT voltage BOOT -0.3 25 V 3
BOOT, SW BOOT-SW -0.3 6 V 3
EN, FB voltage EN, FB -0.3 6 V 3
Operating junction temperature TJ -40 150 ℃ 3
Storage temperature TSTG -65 150 ℃ 3
ESD HBM VESD_HBM -2000 2000 V HBM 3
ESD CDM VESD_CDM -500 500 V CDM 3
VIN input voltage range VIN 4.5 17 V 3
Output voltage range VOUT 0.768 7 V 3
Output current range IOUT 0 3 A 3
SW voltage, DC SW -0.1 17 V DC 3
SW voltage, transient SW -3 19 V Transient < 10 ns 3
VIN, SW, DC VIN-SW -0.1 17 V DC 3
VIN, SW, transient VIN-SW -3 19 V Transient < 10 ns 4
BOOT voltage BOOT -0.1 22.5 V 4
BOOT, SW BOOT-SW -0.1 5.5 V 4
EN, FB voltage EN, FB -0.1 5.5 V 4
Junction temperature TJ -40 125 ℃ 4
VIN quiescent current KP523201A IQ(VIN) 190 µA No switching, VEN = 5 V, VFB = VREF*105%, IOUT = 0 A 4
EN delay time TDLY 440 µs From EN high to first switching pulse 5
Switching frequency FSW 580 kHz VIN = 12V, VOUT = 5V, continuous conduction 5
High-side MOSFET on-resistance RDSON(HS) 80 mΩ TJ = 25℃, VIN = 12V, VBOOT-SW = 5V 5
Low-side MOSFET on-resistance RDSON(LS) 50 mΩ TJ = 25℃, VIN = 12V 5
Minimum on-time tON(min) 50 ns 5
Minimum off-time tOFF(min) 180 ns 5
Dead time tDEAD 10 ns 5
Zero-cross detection point IZC 70 mA 5
UVP threshold VUVP 65 % VFB falling 5
OVP threshold VOVP 115 % VFB rising 5
Thermal shutdown threshold TJ(SD) 160 ℃ 5
Thermal shutdown hysteresis TJ(HYS) 35 ℃ 5
Junction-to-ambient thermal resistance (EVM) RθJA(EVM) 54 ℃/W EVM 60mm x 45mm, 2-layer 2Oz; VIN=12V, VOUT=5V, IOUT=3A, TA=25℃ 4

CAD (KiCad official)

  • Symbol: KP523201ALGA
  • Footprint: Package_TO_SOT_SMD:TSOT-23-6
  • 3D model: TSOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: kp523201alga-etched.step / kp523201alga-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); kp523201alga.step / kp523201alga.glb are the bare package body.

Provenance

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

  • Datasheet: Kiwi Instruments datasheet (23 pp, sha256 b5aa4b4b40158fbe, retrieved 2026-10-22, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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