New product release · 2026

iT8500E Preliminary datasheet

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.

NewEmb. Hall ±15GVSP + PWM4-pt speed curve3.2–18V0.6A continuousDFN3×3-8LOTP · 2 banksiNGUI programmable
iT8500E DFN3×3-8L · TOP VIEW · PIN 1 AT VSS 9 VSS 8 7 6 5 1 2 3 4 VSS OUT1 HALL_IN PWM/SCL OUT2 VCC NC FG/SDA Digital Single-Phase BLDC Motor Driver
Key specifications

The iT8500E at a glance

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, control, protection and programming

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
Pins & protections

Pin assignment and protections

Pin assignment

PinSymbolDescription
1VSSGround pin
2OUT1Driving motor output
3HALL_INExternal Hall IC signal input
4PWM/SCLDirect PWM input / I²C SCL
5FG/SDASpeed signal output / I²C SDA
6NCNo connection
7VCCPower supply pin
8OUT2Driving motor output
9VSS (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.

Generation comparison

iT8500E vs iT1300E

ParameteriT8500E NewiT1300E
Operating voltage3.2–18V3.5–16V
Max. rating voltage22V20V
Continuous current0.6A0.6A
Speed command inputPWM + analog voltage (VSP)Direct PWM only
Flexible speed curve4 points2 points
Speed change algorithmACC / DEC slope controlConstant
Phase angle compensationFixed / linear (lead or lag)Fixed / auto (lead only)
Adjustable waveform✓ 16 points✓
OTP memory2 banks2 banks
Default operating code✓—
Rotor lock detection✓ Programmable✓
OCP / OVP / UVP / TSD✓✓
PackageDFN3×3-8LDFN3×3-8L
Application circuit notes

Six notes for the application circuit

  1. C1 must be placed as close as possible to VCC / VSS pins. Recommend ≥ 2.2µF / 25V 0603 capacitor.
  2. Z1 (TVS diode) is required for hot-plug or strict operating conditions protection. 16–18V TVS preferred.
  3. RPWM = 1K–1.2KΩ and RFG = 47–100Ω for system ESD/EFT improvement.
  4. When using external Hall sensor: H1 = iA1188D or equivalent Hall latch IC; C2 = 0.1µF typical.
  5. D1: recommend 2A / 20–40V Schottky diode.
  6. PCB 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.

Full Hall placement and PCB rules are in the ASIC design guide.

Get started

Ready to evaluate the iT8500E?

Download the preliminary datasheet, request engineering samples, or contact our FAE team for design support.

inergy Technology Inc. · support@inergy.com.tw · mkt@inergy.com.tw