H-Bridge Driver. 34933 Datasheet

34933 Driver. Datasheet pdf. Equivalent

34933 Datasheet
Recommendation 34933 Datasheet
Part 34933
Description 1.4A Dual H-Bridge Driver
Feature 34933; Freescale Semiconductor Technical Data Document Number: MC34933 Rev. 3.0, 9/2014 1.4 A Dual H-Bri.
Manufacture NXP
Datasheet
Download 34933 Datasheet





NXP 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.



NXP 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



NXP 34933
PIN CONNECTIONS
PIN CONNECTIONS
OUT1A 1
PGND1 2
PGND2 3
OUT2A 4
16 15 14 13
17
Exposed
Pad
12 VG
11 VCC
10 IN1A
9 IN1B
5 6 78
Figure 3. 34933 Pin Connections
Table 1. 34933 Pin Definitions
Pin
Number
Pin Name Pin Function
Formal Name
Definition
1
OUT1A
Output
H-Bridge Output 1A
Output A of H-Bridge channel 1.
2
PGND1 Power supply
Power Ground 1
Power supply grounds for the 34933 device. Refer to the application
diagram for recommended layout.
3
PGND2 Power supply
Power Ground 2
Power supply grounds for the 34933 device. Refer to the application
diagram for recommended layout.
4
OUT2A
Output
H-Bridge Output 2A
Output A of H-Bridge channel 2
5
OUT2B
Output
H-Bridge Output 2B
Output B of H-Bridge channel 2
6
VM2
Power supply Motor Drive Power Supply 2
Power supply pins for the 34933 motor drive circuitry. Refer to the
application diagram for recommended layout.
7
IN2A
Input
Logic Input Control 2A Logic input control of OUT2A
8
IN2B
Input
Logic Input Control 2B Logic input control of OUT2B
9
IN1B
Input
Logic Input Control 1B Logic input control of OUT1B
10
IN1A
Input
Logic Input Control 1A Logic input control of OUT1A
11
VCC
Power supply Control Logic Power Supply Power supply for the control logic circuitry.
12
VG
Output
Charge Pump Output
Capacitor
Charge pump output pin connected to an external capacitor. The VG
voltage is the sum of the VCC and VM power supplies.
13 CL Input/Output Charge Pump Capacitor 1 Low-side charge pump capacitor connection
14 CH Input/Output Charge Pump Capacitor 2 High-side charge pump capacitor connection
15
VM1
Power supply Motor Drive Power Supply 1
Power Supply pins for the 34933 motor drive circuitry. Refer to the
application diagram for recommended layout.
16
OUT1B
Output
H-Bridge Output 1B
17(1)
Exposed Pad Power supply
EP
Output B of H-Bridge channel 1
The exposed pad is connected to ground plane via the exposed pad
solder pad. Note the primary purpose of the exposed pad for 34933
is thermal heat dissipation. Therefore, adequate thermal vias should
be included in the PCB design.
Notes
1. Exposed pad is used as a heat sink. Connect it to the power ground through four thermal vias where the area is wide.
Analog Integrated Circuit Device Data
Freescale Semiconductor
34933
3





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