New Product Release · 2026

Preliminary Datasheet Available

iT8500E

Digital Single-Phase BLDC Motor Driver

The iT8500E is a highly integrated single-phase BLDC motor driver combining an embedded Hall sensor, gate driver, power MOSFETs, and digital control logic into a single DFN3×3-8L chip. It introduces analog VSP speed control, 4-point speed curve, programmable lead/lag angle, and ACC/DEC slope control — significant advances over the previous generation.

New Emb. Hall ±15G VSP + PWM 4-Pt Speed Curve 3.2–18V 0.6A Continuous DFN3×3-8L OTP · 2 Banks iNGUI Programmable

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DFN3×3-8L · Top View · Pin 1 at VSS

Key Specifications

Operating Voltage

3.2–18V

Max rating 22V

Output Current

0.6A

Peak 1.2A

Package

DFN3×3-8L

3mm × 3mm · EP pad

Hall Sensor

Embedded

±15G · Ext. Hall supported

Speed Control

PWM + VSP

PWM 100Hz–100kHz · VSP 0–3.3V

Speed Curve

4 Points

Flexible breakpoint setting

Lead / Lag Angle

±90°

Fixed or Linear programmable

OTP Memory

2 Banks

Via iNGUI / I²C

Ambient Temp.

−40 to 85°C

TJ max 150°C

PWM Output Freq.

25 / 50kHz

GUI selectable

Power Dissipation

2.5W

@ TA ≤ 25°C

Standby Current

85µA

Power Saving Mode

Features & Capabilities

⚡ Power & Input

Wide VCC range 3.2–18V (max 22V)
Continuous output up to 0.6A, peak 1.2A
VSP analog input 0–3.3V for analog speed control
PWM input 100Hz–100kHz, duty 0–100%
Embedded Hall sensor ±15G (external Hall also supported)
Programmable FG/RD diagnostics output

🎛 Advanced Control

Selectable Open Loop or Closed Loop control
4-point flexible speed curve setting
ACC / DEC slope control — programmable to 2.66 / 5.33 / 7.98 / 10.64s
Programmable Lead / Lag angle (Fixed or Linear)
ZCD for Anti-BEMF improvement
Soft Start & Kick Start mechanisms
16-point editable driving waveform

🛡 Protections

OCP (Latch) — threshold 1.65A or 2× current limit
OVP — triggers at 24V, releases below 23V
UVP — locks out below 8V, auto-recovers
TSD — two selectable modes: 150°C or 175°C shutdown
Programmable rotor lock detection: 0.25s / 0.5s
Lock recovery retry: 0 / 1.5 / 3 / 6s programmable
Programmable current limit: 0.10–1.65A in 0.05A steps

🖥 GUI & Programming

iNGUI software for rapid motor parameter tuning
I²C interface for OTP programming (PWM/SCL, FG/SDA pins)
2-bank OTP memory — configurable default operating code
Pole count, lead angle, target speed, PWM duty all configurable
Power Saving Mode — enters after 10ms PWM low
FG output: 0.5×, 1.0×, or 2.0× Hall signal frequency

Pin Assignment

Pin	Symbol	Description
1	VSS	Ground pin
2	OUT1	Driving motor output
3	HALL_IN	External Hall IC signal input
4	PWM/SCL	Direct PWM input / I²C SCL
5	FG/SDA	Speed signal output / I²C SDA
6	NC	No connection
7	VCC	Power supply pin
8	OUT2	Driving motor output
9	VSS (EP)	Ground pin — Exposed Pad (heat dissipation)

Protections

⚡

OCP

Over-current protection with latch. Triggers at 1.65A or 2× programmable limit.

🔼

OVP

Over-voltage protection. Shuts off H-bridge above 24V; auto-resumes below 23V.

🔽

UVP

Under-voltage lockout. Disables all internal logic below 8V threshold.

🌡

TSD

Two selectable TSD modes: 150°C or 175°C error; 100°C or 125°C alarm.

🔒

Lock Detect

Rotor lock detection with programmable retry interval 0–6s.

🎚

Current Limit

Programmable overload limit 0.10–1.65A in 0.05A steps via GUI.

iT8500E vs iT1300E — Generation Comparison

Parameter	iT8500E NEW	iT1300E
Operating Voltage	3.2–18V	3.5–16V
Max. Rating Voltage	22V	20V
Continuous Current	0.6A	0.6A
Speed Command Input	PWM + Analog Voltage (VSP)	Direct PWM only
Flexible Speed Curve	4 Points	2 Points
Speed Change Algorithm	ACC / DEC Slope Control	Constant
Phase Angle Compensation	Fixed / Linear (Lead or Lag)	Fixed / Auto (Lead only)
Adjustable Waveform	✓ 16 Points	✓
OTP Memory	2 Banks	2 Banks
Default Operating Code	✓	—
Rotor Lock Detection	✓ Programmable	✓
OCP / OVP / UVP / TSD	✓	✓
Package	DFN3×3-8L	DFN3×3-8L

Application Circuit Notes

01C1 must be placed as close as possible to VCC / VSS pins. Recommend ≥ 2.2µF / 25V 0603 capacitor.
02Z1 (TVS diode) is required for hot-plug or strict operating conditions protection. 16–18V TVS preferred.
03R_PWM = 1K–1.2KΩ and R_FG = 47–100Ω for system ESD/EFT improvement.
04When using external Hall sensor: H1 = iA1188D or equivalent Hall latch IC; C2 = 0.1µF typical.
05D1: recommend 2A / 20–40V Schottky diode.
06PCB layout: place 8 vias (Pad 0.5mm / Hole 0.3mm) under the EP to dissipate heat. Hall sensor position at 0.25×T from stator inner edge.

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iT8500E

Digital Single-Phase BLDC Motor Driver

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