HX4054A from HX(hengjiaxing), in a SOT-23-5. 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	CHRG	output	Open-drain charge status output that is pulled low (about 10mA strong pull-down) while charging, changes to a 20uA weak pull-down when charging ends, and is high impedance when VCC is below the undervoltage threshold or VCC-VBAT is below 30mV; float or ground it if unused.
2	GND	power_in	Power ground.
3	BAT	power_out	Battery positive connection that supplies charge current and a 4.2V float voltage to the battery, with leakage below 3uA in disabled or sleep mode.
4	VCC	power_in	Positive input supply (4.0V to 6V operating, absolute max 7V); charging starts only when VCC is above the undervoltage threshold and 100mV above BAT, and the part enters low-power shutdown when VCC-VBAT falls below 30mV.
5	PROG	passive	Charge current program pin where a resistor to GND sets the current by RPROG=1000V/IBAT, with the pin held at 1V in constant-current mode and 0.1V in trickle charge.

Key specifications

Parameter	Value
Manufacturer	HX(hengjiaxing)
Package	SOT-23-5
Category	Power Management ICs
Pins	5

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
输入电源电压	VCC	4	5	6	V		3
输入电源电流充电模式	ICC		110	350	uA	充电模式,RPROG=2K	3
输入电源电流待机模式	ICC		40	200	uA	待机模式(充电终止)	3
输入电源电流停机模式	ICC		30	200	uA	停机模式(RPROG未连接,VCC<VBAT,VCC<VUV,VCE=0V)	3
输出浮充电压	VFLOAT	4.158	4.2	4.242	V	0℃≤TA≤85℃	3
BAT引脚电流	IBAT	80	100	120	mA	RPROG=10K,电流模式	3
BAT引脚电流	IBAT	400	500	600	mA	RPROG=2K,电流模式	3
BAT引脚电流停机模式	IBAT	0		2	μA	停机模式(RPROG未连接或VCE=0V)	3
BAT引脚电流睡眠模式	IBAT	0		2	μA	睡眠模式,VCC=0	3
涓流充电阈值电压	VTRIKL	2.7	2.9	3	V	RPROG=10K,VBAT上升	3
VCC欠压保护阈值电压	VUV	3.5	3.7	3.9	V	VCC上升	3
VCC欠压保护迟滞电压	VUVHYS	3.5	3.7	3.9	V	VCC下降	3
PROG引脚电压	VPROG	0.9	1	1.1	V	RPROG=2K,电流模式	3
CHRG引脚输出低电压	VCHRG		0.3	0.6	V	ICHRG=5 mA	3
CHRG引脚弱下拉电流	ICHRG	8	20	40	μA	VCHRG=5V	3
再充电电池阈值电压	ΔVRECHRG	70	100	150	mV	VFLOAT-VRECHRG	3
再充电比较器滤波时间	TRECHRG	1	2	3	mS	VBAT下降	3
结束比较器滤波时间	TTERM	1	2	3	mS	IBAT降至ICHG/10以下	3
涓流充电电流	ITRIKL		200		mA	VBAT<VTRIKL,RPROG=2K	3
涓流充电电流	ITRIKL		40		mA	VBAT<VTRIKL,RPROG=10K	3
涓流充电迟滞电压	VTRHYS		100		mV	RPROG=10K	3
VCC-VBAT阈值电压	VASD		150		mV	VCC上升	3
VCC-VBAT阈值电压	VASD		60		mV	VCC下降	3
限定温度模式结温	TLIM		115		℃		3
功率FET导通电阻	RON		800		mΩ		3
软启动时间	TSS		20		uS	IBAT=0至IBAT=1000V/RPROG	3
PROG引脚上拉电流	IPROG		2		μA		3
输入电源电压	VCC	-0.3		7	V		2
PROG脚电压	PROG	-0.3		0.3	V		2
BAT脚电压	BAT	-0.3		7	V		2
CHRG脚电压	CHRG	-0.3		7	V		2
BAT脚电流	IBAT			600	mA		2
PROG脚电流	IPROG			600	uA		2
工作环境温度	TOP	-40		85	℃		2
储存温度	TSTG	-65		125	℃		2
ESD HBM	ESD			2000	V	HBM	2
ESD MM	ESD			200	V	MM	2

CAD (KiCad official)

Symbol: HX4054A
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)
3D model files: hx4054a-etched.step / hx4054a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hx4054a.step / hx4054a.glb are the bare package body.

Provenance

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

Datasheet: HX(hengjiaxing) datasheet (6 pp, sha256 c742777acff367e6, retrieved 2026-10-31, 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

HX4054A

Verified HX4054A

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3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

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