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MC34933EPR2

Description
motor / motion / ignition controllers & drivers 2 CH H-bridge
Categorysemiconductor    Other integrated circuit (IC)   
File Size333KB,17 Pages
ManufacturerFREESCALE (NXP)
Environmental Compliance  
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MC34933EPR2 Overview

motor / motion / ignition controllers & drivers 2 CH H-bridge

MC34933EPR2 Parametric

Parameter NameAttribute value
ManufactureFreescale Semiconduc
Product CategoryMotor / Motion / Ignition Controllers & Drivers
RoHSYes
TypeDual H-Bridge Drive
Output Curre1.4 A
Operating Temperature- 20 C to + 85 C
Supply Curre100 uA
Mounting StyleSMD/SMT
Package / CaseUQFN-16
PackagingReel
Output Voltage+ 2 V to + 7 V
Factory Pack Quantity2500
Unit Weigh16.200 mg
Freescale Semiconductor
Technical Data
Document Number: MC34933
Rev. 2.0, 12/2013
1.4 A Dual H-Bridge Driver
Compatible with 3.0 V Logic
The 34933 is a two channel H-Bridge driver aimed at the digital
camera market. There are a variety of applications containing bipolar
step motors and/or brush DC motors, such as Auto Focus control for
the digital camera lens. The 34933 uses Freescale's proprietary
SMOS8 Bi CMOS process to deliver a low power device, with a
maximum quiescent current of 100
μA
for the motor drive supply and
400μA for the control logic supply.
The 34933 V
M
supply operates from 2.0 V to 7.0 V using an internal
charge pump, with independent control of each H-Bridge driver via the
MCU (IN1A, IN1B, IN2A, IN2B). The 34933 has a low total R
DS(ON)
of
1.0
Ω
(max. at 25 °C). Shoot-through current protection is a built-in
feature for the 34933 device.
The 34933 has four operation modes: forward, reverse, brake, and
tri-state (high-impedance). The 34933 employs a VCC detection circuit
to sense when the logic supply switches to an off-state with a maximum
current of 1uA to extend battery life. The H-Bridge drivers can be
independently pulse width modulated up to 200 kHz for speed/ torque
and/or current control. Note that tri-state mode of H-Bridge drivers can
occur when either VCC detect is low or the thermal detect is active.
Features
Built-in 2-channel H-Bridge driver
H-Bridge operation voltage 2.0 V~7.0 V
Max. load output current 1.0 A @ T
A
= 25 °C
Low total R
DS(ON)
0.8
Ω
(typ), 1.0
Ω
(max.) @ T
A
= 25 °C peak
Dual channel parallel driver, R
DS(ON)
0.4
Ω
(typ.). max. DC
current 1.4 A
PWM control input frequency up to 200 kHz
Built-in shoot-through current prevention circuit
Built-in charge pump circuit (external cap type)
VCC low voltage detection for logic power supply voltage
Thermal detection for H-Bridge driver
3V
34933
VCC
VG
CH
CL
IN1A
IN1B
IN2A
IN2B
VM1
VM2
OUT1A
OUT1B
5V
MC34933EP
34933
H-BRIDGE DRIVER
EP SUFFIX (Pb-FREE)
98ASA00110D
16-PIN UQFN
ORDERING INFORMATION
Device
(For Tape and Reel, add an R2
Suffix)
Temperature
Range (T
A
)
-20 °C to 85 °C
Package
16-UQFN
MCU
OUT2A
OUT2B
PGND1
PGND2
M
Stepper
Motor
Figure 1. 34933 Simplified Application Diagram
© Freescale Semiconductor, Inc., 2012-2013. All rights reserved.

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