FH3016FDZ from XIN FEI HONG, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	DOUT	output	Discharge control output. Drives the gate of the external discharge-side N-MOSFET Q2. High level ≈ VDD-0.2 V @ 10 µA (turns Q2 on); low level ≤ 0.4 V @ 10 µA (turns Q2 off during over-discharge / over-current-discharge / short-circuit protection).
2	VM	input	Charge/discharge current-sense input. Connected through a current-limit resistor (typ. 1 kΩ, R2 recommended 2.2 kΩ, range 500 Ω-4.7 kΩ) to the source of the external charge-side N-MOSFET Q1 / battery pack negative terminal. Senses the voltage drop across Q1+Q2 to detect over-current and short-circuit conditions. Internal ~1.5 MΩ pull-up to VDD and ~20 kΩ pull-down to VSS.
3	COUT	output	Charge control output. Drives the gate of the external charge-side N-MOSFET Q1. High level ≈ VDD-0.2 V (Q1 on); driven low (via ~4 MΩ pull-down) during over-charge / over-current-charge protection to disconnect the charger.
4	NC	unconnected	No connection. Leave floating (悬空).
5	VDD	power_in	Positive power supply / battery-cell positive sense input. Operating range 1.5 V to 6 V (abs max -0.3 V to +6 V). Requires a 0.1 µF ceramic decoupling capacitor to VSS through the recommended 330 Ω series resistor R1 (R1 < R2).
6	VSS	power_in	Ground / battery-cell negative terminal. All voltages are referenced to VSS.

Key specifications

Parameter	Value
Manufacturer	XIN FEI HONG
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

FH3016FDZFDL
FH3016FDZFDA
FH3016FDZFDM
FH3016FDZFDN
FH3016FDZFDO
FH3016FDZDCH
FH3016FDZFDY
FH3016FDZ
FH3016FDZFHB

CAD (KiCad official)

Symbol: FH3016FDZ
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

Datasheet: XIN FEI HONG datasheet (11 pp, sha256 b4eb49239e5357da, retrieved 2026-08-17, 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF