34933 Compatible Datasheet

34933 Datasheet, PDF, Equivalent


Part Number

34933

Description

1.4A Dual H-Bridge Driver Compatible

Manufacture

NXP

Total Page 17 Pages
Datasheet
Download 34933 Datasheet


34933
Freescale Semiconductor
Technical Data
Document Number: MC34933
Rev. 3.0, 9/2014
1.4 A Dual H-Bridge Driver
Compatible with 3.0 V Logic
34933
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
SMARTMOS process to deliver a low-power device, with a maximum
quiescent current of 100 A for the motor drive supply and 400A for
the control logic supply.
H-BRIDGE DRIVER
The 34933 VM 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 RDS(on) of
1.0 (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 1.0 A 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
EP SUFFIX (Pb-FREE)
98ASA00717D
16-PIN UQFN
ORDERING INFORMATION
Device
(For Tape and Reel, add an R2
Suffix)
Temperature
Range (TA)
Package
MC34933EP
-20 °C to 85 °C 16-UQFN
• H-Bridge operation voltage 2.0 V to 7.0 V
• Max. load output current 1.0 A at TA = 25 °C
• Low total RDS(ON) 0.8 (typ), 1.0 (max.) @ TA = 25 °C peak
• Dual channel parallel driver, RDS(ON) 0.4 (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
3.0 V
5.0 V
VCC
VG
34933
VM1
VM2
CH OUT1A
CL OUT1B
MCU
IN1A
IN1B
IN2A
IN2B
OUT2A
OUT2B
PGND1
PGND2
M
Stepper
Motor
Figure 1. 34933 Simplified Application Diagram
© Freescale Semiconductor, Inc., 2012-2014. All rights reserved.

34933
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
VM
VG = VM+VCC
VG
VCC
CH CHARGE PUMP
CL
VCC
VCCdet
VCC
tdet VCC
IN1A
IN1B
IN2A
IN2B
CONTROL
LOGIC
VCC
VCC DETECTION
THERMAL DETECTION
VCCdet
tdet
VCC
VG
High-side Driver
LEVEL SHIFTER
PRE-DRIVER
Low-side Driver
High-side Driver
Low-side Driver
VM1
OUT1A
OUT1B
PGND1
VM2
OUT2A
OUT2B
PGND2
* VM1 and VM2 are connected internally. Both VM1 and VM2 must be tied together on the PCB.
PGND1 and PGND2 are connected internally. Both PGND1 and PGND2 must be tied together on the PCB.
Figure 2. 34933 Simplified Internal Block Diagram
34933
2
Analog Integrated Circuit Device Data
Freescale Semiconductor


Features Freescale Semiconductor Technical Dat a Document Number: MC34933 Rev. 3.0, 9 /2014 1.4 A Dual H-Bridge Driver Compa tible with 3.0 V Logic 34933 The 3493 3 is a two channel H-Bridge driver aime d at the digital camera market. There a re a variety of applications containing bipolar step motors and/or brush DC mo tors, such as Auto Focus control for th e digital camera lens. The 34933 uses F reescale's proprietary SMARTMOS process to deliver a low-power device, with a maximum quiescent current of 100 A f or the motor drive supply and 400A f or the control logic supply. H-BRIDGE DRIVER The 34933 VM supply operates fr om 2.0 V to 7.0 V using an internal cha rge pump, with independent control of e ach H-Bridge driver via the MCU (IN1A, IN1B, IN2A, IN2B). The 34933 has a low total RDS(on) of 1.0  (max. at 25 ° C). Shoot-through current protection is a built-in feature for the 34933 devic e. The 34933 has four operation modes: forward, reverse, brake, and tri-state (high-impedance). The 34.
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