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The 17550 is a monolithic quad H-Bridge power IC ideal for portable electronic applications containing tiny bipolar stepper motors and/or brush DC-motors powered by two-to-four cell NiCd/NiMH batteries.
The 17550 operates from 2.5 V to 5.5 V, with independent control of each H-Bridge via parallel 3.0 V or 5.0 V logic-compatible I/O. The device features an on-board DC/DC boost converter that allows motor operation all the way down to 1.6 V (the boost converter supplies the gate-drive voltage for each of the four independent H-bridge output stages). Each output bridge has its own gate-drive and logic circuitry with built-in shoot-through current protection.
The 17550 has four operating modes: Forward, Reverse, Brake, and Tri-Stated (High Impedance). The 17550 has a low total RDS(ON) of 1.2 max @ 25 . In addition, it can be set into a very low current-drain standby mode.
The H-Bridge outputs can be independently PWM'ed at up to 200 kHz for speed/torque and current control. The 17550 can efficiently drive many types of micromotors owing to its low output resistance and high output slew rates.
MPC17550 Maximum Ratings
Rating
Symbol
Value
Unit
Motor Supply Voltage
VM
-0.5 to 9.0
V
Gate-Driver Circuit Power Supply Voltage
VG
VDD-0.5 to 14
V
Logic Supply Voltage
VDD
-0.5 to 6.0
V
Signal Input Voltage (Note 1)
VIN
-0.5 to VDD+0.5
V
Driver Output Current Continuous (Note 2) Peak (Note 3)
IO IOPK
0.7 2.0
A
ESD Voltage Human Body Model (Note 4) Machine Model (Note 5)
VESD1 VESD2
±2000 ±100
V
Storage Temperature Range
TSTG
-65 to 150
Operating Ambient Temperature
TA
-10 to 60
Operating Junction Temperature
TJ
-10 to 150
Thermal Resistance (Note 6)
RJA
TBD
/W
Power Dissipation (Note 7)
PD
1500
mW
Soldering Temperature (Note 8)
TSOLDER
260
v
Notes 1. VIN is the voltage level applied to any input terminal. 2. IO is measured as the load current flowing through the H-bridge. 3. TA = 25°C, pulse width < 10 ms at intervals > 0.2 seconds. 4. ESD1 testing is performed in accordance with the Human Body Model (CZAP = 100 pF, RZAP = 1500 ). 5. ESD2 testing is performed in accordance with the Machine Model (CZAP = 200 pF, RZAP = 0 ). 6. Mounted on 37 x 50 Cu area (1.6 mm FR-4 PCB). 7. Maximum at TA = 25. 8. Soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may cause malfunction or permanent damage to the device.
MPC17550 Features
• Low Total RDS(ON) 0.7 (Typ), 1.2 (Max) @ 25 • Output Current 700 mA (Continuous per Output) • Shoot-Through Current Protection Circuit • PWM Control Input Frequency up to 200 kHz • Built-In DC/DC Boost Converter • Low Power Consumption Standby Mode • Undervoltage Detection and Shutdown Circuit • Pb-Free Packaging Designated by Suffix Code EV