PT2469
Dual-Bridge Motor Controller IC
DESCRIPTION
The PT2469 provides an integrated motor driver
solution for printers, scanners, and other automated
equipment applications. The device has two H-bridge
drivers, and can drive a bipolar stepper motor or two
DC motors. The output driver block for each consists of
N-channel power MOSFET’s configured as full H–
bridges to drive the motor windings. The PT2469 is
capable of driving up to 1.6-A of output current (with
proper heatsinking, at 24 V and 25°C).
A simple parallel digital control interface is compatible
with industry-standard devices. Decay mode is
programmable.
The PT2469 is available in a 28-pin HTSSOP package
with thermal pad and in a 28-pin QFN package thermal
pad.
FEATURES
8.2-V to 45-V Operating Supply Voltage Range
1.6-A Maximum Drive Current at 24 V and T
A
=
25°C.
Industry Standard Parallel Digital Control Interface
Low Current Sleep Mode
Built In 3.3-V Reference Output Small Package
and Footprint
Dual H-Bridge Current Control Motor Driver
- Drive a Bipolar Stepper or Two DC Motors
- Four Level Winding Current Control
Multiple Decay Modes
- Mixed Decay
- Slow Decay
- Fast Decay
Protection Features
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- VM Undervoltage Lockout (UVLO)
- Fault Condition Indication Pin (nFAULT)
APPLICATIONS
Automatic Teller Machines
Money Handling Machines
Video Security Cameras
Printers
Scanners
Office Automation Machines
Gaming Machines
Factory Automation
Robotics
BLOCK DIAGRAM
PT2469
VM
INTERNAL
REFERENCE
& REGS
Int. VCC
CHARGE
PUMP
CP1
CP2
VCP
V3P3OUT
BIAS
CURRENT
PROTECTION
AVREF
BVREF
APHASE
AENBL
AI0
AI1
BPHASE
BENBL
BI0
BI1
DECAY
nRESET
nSLEEP
nFAULT
MOTOR
DRIVER
A
VMA
AOUT1
AOUT2
ISENA
CONTROL
LOGIC
VMB
MOTOR
DRIVER
B
BOUT1
BOUT2
ISENB
GND
GND
Tel: 886-66296288
‧
Fax: 886-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Road, Sindian, Taipei 23145,
Taiwan
PT2469
PIN DESCRIPTION
Pin Name
CP1
CP2
VCP
VMA
AOUT1
ISENA
AOUT2
BOUT2
ISENB
BOUT1
VMB
AVREF
BVREF
GND
V3P3OUT
nRESET
nSLEEP
nFAULT
DECAY
APHASE
AENBL
BENBL
BPHASE
AI0
AI1
BI0
BI1
GND
I/O
I
I
O
--
O
I
O
O
I
O
--
I
I
--
O
I
I
I
I
I
I
I
I
I
I
I
I
--
Description
Charge pump flying capacitor, Connect a 0.01-μF 50-V capacitor between
CP1 and CP2.
High-side gate drive voltage (Connect a 0.1-μF 10-V ceramic capacitor and a
1-MΩ resistor to VM.)
Bridge A power supply
Bridge A output 1
Bridge A ground / Isense
Bridge A output 2
Bridge B output 2
Bridge B ground / Isense
Bridge B output 1
Bridge B power supply
Bridge A current set reference input
Bridge B current set reference input
Device ground
3.3-V regulator output
Reset input (Active-low reset input initializes internal logic and disables the
H-bridge outputs)
Sleep mode input (Logic high to enable device, logic low to enter low-power
sleep mode)
Fault, Logic low when in fault condition (overtemp, overcurrent)
Decay mode (Low = slow decay, open = mixed decay, high = fast decay)
Bridge A phase (Logic high sets AOUT1 high, AOUT2 low)
Bridge A enable (Logic high to enable bridge A)
Bridge B enable (Logic high to enable bridge B)
Bridge B phase (Logic high sets BOUT1 high, BOUT2 low)
Bridge A current set (Sets bridge A current: 00 = 100%, 01 = 71%, 10 = 38%,
11 = 0)
Bridge B current set (Sets bridge B current: 00 = 100%, 01 = 71%, 10 = 38%,
11 = 0)
Device ground
Pin No.
HTTSSOP WQFN
4
1
5
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
PRE1.1
4
MAR, 2018
PT2469
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply voltage
Digital pin voltage
VREF input voltage
Output current
Operating temperature
Storage temperature
ESD, Human body model
ESD, Machine model
Symbol
VMx
xPHASE/xENBL
xVREF
Iout
Topr
Tstg
HBM
MM
Min.
0
0
0
0
-40
-65
-2000
-200
Max.
47
5
4
1.6
85
150
+2000
+200
Unit
V
V
V
A
°C
°C
V
V
PACKAGE THERMAL CHARACTERISTIC
Parameter
From chip conjunction dissipation to
external environment
From chip conjunction dissipation to
package surface
Symbol
Rja
Ta=25°C
Rjc
23.3
25.1
Condition
HTSSOP
VQFN
(28 PINS) (28 PINS)
38.9
35.8
°C/W
Unit
RECOMMENED OPERATING CONDICTION
Parameter
Motor power supply voltage range
VREF input voltage
V3P3OUT load current
Symbol
V
M
V
REF
I
3P3
Min
8.2
1
--
Typ
--
--
--
Max
45
3.5
1
Unit
V
V
mA
PRE1.1
5
MAR, 2018
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