Document
STSPIN220
Datasheet
Low voltage stepper motor driver
Product status link STSPIN220
Product summary
Order code
STSPIN220
Package
VFQFPN 3x3x1.0 16L
Packing
Tape & reel
Features
• Operating voltage: from 1.8 to 10 V • Maximum output current: 1.3 Arms • RDS(ON) HS + LS = 0.4 Ω typ. • Microstepping up to 1/256th of a step • Current control with programmable off-time • Full protection set
– Non-dissipative overcurrent protection – Short-circuit protection – Thermal shutdown • Energy saving and long battery life with standby consumption less than 80 nA
Applications
Battery-powered stepper motor applications such as: • Pop-up camera control for smartphones • Point of sale (POS) devices • Portable printers • PC peripherals and accessories • Robotics • Toys • Reflex cameras
Description
The STSPIN220 is a stepper motor driver which integrates, in a small VFQFPN 3 x 3 x 1.0 mm package, both control logic and a low RDS (on) power stage.
The integrated controller implements PWM current control with fixed OFF time and a microstepping resolution up to 1/256th of a step.
The device is designed to operate in battery-powered scenarios and can be forced into a zero-consumption state, allowing a significant increase in battery life.
The device offers a complete set of protection features including overcurrent, overtemperature and short-circuit protection.
DS11633 - Rev 4 - March 2019 For further information contact your local STMicroelectronics sales office.
www.st.com
STSPIN220
Block diagram
1 Block diagram
STBY\RESET REF
EN\FAULT
STCK\MODE3 DIR\MODE4 MODE1
Vrelease
+
+
MODE2 TOFF
Oscillator
Control logic
Figure 2. Block diagram
VS VS
01
DAC
VS
OC\SC
VBAT OUTA1
OC\SC
OUTA2
SENSEA + VS
OC\SC
OUTB1
Stepper motor
+ OVT
GND
OC\SC
OUTB2 SENSEB
AM040026
DS11633 - Rev 4
page 2/27
STSPIN220
2
2.1
2.2 2.3
Electrical data
Absolute maximum ratings
Table 1. Absolute maximum ratings
Symbol VS VIN
VOUT - VSENSE VS - VOUT VSENSE VREF IOUT,RMS Tj,OP Tj,STG
Parameter Supply voltage Logic input voltage Output-to-sense voltage drop Supply-to-output voltage drop Sense pin voltage Reference voltage input Continuous power stage output current (each bridge) Operative junction temperature Storage junction temperature
Test condition
Recommended operating conditions
Value -0.3 to 11 -0.3 to 5.5 Up to 12 Up to 12
-1 to 1 -0.3 to 1
1.3 -40 to 150 -55 to 150
Unit V V V V V V
Arms °C °C
Table 2. Recommended operating conditions
Symbol VS VIN
VREF tINw
Parameter Supply voltage Logic input voltage Reference voltage input Logic inputs positive/negative pulse width
Test condition
Thermal data
Min Typ Max Unit 1.8 10 V 0 5V 0.1 0.5 V 300 ns
Table 3. Thermal data
Symbol
Parameter
Conditions
Rth (JA)
Junction to ambient thermal resistance
Natural convection, according to JESD51-2a (1)
RthJCtop
Junction to case thermal resistance (top side)
Simulation with cold plate on package top
RthJCbot
Junction to case thermal resistance (bottom side)
Simulation with cold plate on exposed pad
RthJB Junction to board thermal resistance According to JESD51-8(1)
ψJT Junction to top characterization According to JESD51-2a(1)
ψJB Junction to board characterization According to JESD51-2a(1)
1. Simulated on a 21.2x21.2 mm board, 2s2p 1 Oz copper and four 300 µm vias below exposed pad.
Value 57.1
67.3
9.1 23.3 3.3 22.6
Unit °C/W
°C/W
°C/W °C/W °C/W °C/W
DS11633 - Rev 4
page 3/27
2.4 ESD protection
Symbol
Parameter
HBM Human body model
CDM Charge device model
Table 4. ESD protection ratings
Test condition
Conforming to ANSI/ESDA/JEDEC JS-001-2014
Conforming to ANSI/ESDA/JEDEC JS-002-2014
STSPIN220
ESD protection
Class H2 C2a
Value 2
500
Unit kV V
DS11633 - Rev 4
page 4/27
STSPIN220
Electrical characteristics
3 Electrical characteristics
Test conditions: VS = 5 V, Tj = 25 °C unless otherwise specified.
Table 5. Electrical characteristics
Symbol
Parameter
Test condition
Supply
VSth (ON) VS turn-on voltage
VS rising from 0 V
VSth
(OFF)
VS turn-off voltage
VS falling from 5 V
VSth
(HYS)
VS hysteresis voltage
IS VS supply current
No commutations EN = ‘0’ ROFF = 160 kΩ No commutations EN = ‘1’ ROFF = 160 kΩ
IS,STBY VS standby current
STBY = 0 V
VSTBYL
Standby low logic level input voltage
VSTBYH
Standby high logic level input voltage
Power stage
VS = 10 V, IOUT = 1.3 A
RDS (ON) Total ON resistance HS + LS
HS+LS
VS = 10 V, IOUT = 1.3 A, Tj = 125 °C (1)
VS = 3 V, IOUT = 0.4 A
IDSS Leakage current
OUTx = VS OUTx = GND
VDF
Freewheeling diode forward voltage
ID = 1.3 A
trise Rise time
VS = 10 V; unloaded outputs
tfall Fall time
VS = 10 V; unloaded outputs
tDT Dead time
Current control
Min 1.45 1.3
1.48
-1
Typ 1.65 1.45 180 960
1500 10
0.4 0.53 0.53
0.9 10 10 50
Max 1.79 1.65
1300
1950 80 0.9
0.65 0.87 0.8
1
Unit V V mV μA
μA nA V V
Ω
µA V ns ns ns
DS11633 - Rev 4
page 5/27
STSPIN220
Electrical charact.