MC34920 Datasheet, PDF (1/28 Pages) Motorola, Inc – 2.8 OHM (Typ) Quad H-Bridge Motor Driver

Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC34920
Rev 1.0, 01/2004
Advance Information
2.8 Ω (Typ) Quad H-Bridge Motor
Driver
34920
The 34920 is a multifunctional analog ASIC. The 34920 integrates two
circuits, four H-bridge drivers, a reset circuit in a single IC, and two DC/DC
switching voltage regulators. Input voltage is 21 V to 42 V DC.
Each motor of the two driver blocks can be configured as either a DC motor
driver with pulse width modulation (PWM)-control or a single bipolar step
motor driver. In step motor mode, both drivers are capable of being operated
in the quarter step mode.
In DC motor mode, both bridges in a driver are in parallel, providing 2.4 A
of drive current. In step motor mode, each bridge in a driver drives one phase.
Each phase is driven with a bipolar current mode drive.
2.8 Ω (TYP) QUAD H-BRIDGE
MOTOR DRIVER
Features
• Individual Thermal Limit Protection
• User-Selectable Motors: 2 DC Motors (2.4 A/Motor), 2 Step Motors
(W1-2 Phase Control), 1 DC Motor and 1 Step Motor
• 2 Buck Regulators (Switching @ 200 kHz)
• V_V2 Output Voltage Is Programmable to 10 V to 15 V DC (Externally Set)
• Low-Voltage Detection Reset (V_V1 and V_VB+)
• Pb-Free Packaging Designated by Suffix Code EI
EI (Pb-FREE) SUFFIX
FN SUFFIX
CASE 777
44-TERMINAL PLCC
ORDERING INFORMATION
Device
Temperature
Range (T_A)
Package
MC34920EI/FN/R2 0°C to 70°C
44 PLCC
34920 Simp_Sl_imifi_pe_lid_fieA_dp_Ap_pl_pic_lia_cati_to_ion_n D_Di_iaa_gg_rr_aa_mm
VVB+
VV1
+
VV2
+
MCU
34920
RESET
SDI
SCLK
CS
DR1PWM
DR2PWM
DR1A
DR2A
DR1B
GND CP1
CP2 Vb
DR2B
VVB+
+
DC
MOTOR
DC
MOTOR
This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Motorola, Inc. 2004
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