L8202 Datasheet, PDF (1/15 Pages) STMicroelectronics – MULTIFUNCTION ANALOG ASIC

L8202
MULTIFUNCTION ANALOG ASIC
1 FEATURES
■ Flexible Motor Driver configuration
– 4 DC Motor drivers (1.5A Peak Current) or
– 2 DC Motor drivers & 1 Dual Full Bridge Step-
per Motor driver
■ 2 Switching Voltage regulators
■ 6 Open Drain Drivers
■ Serial Input Port
■ 4 Operational amplifiers
■ Low voltage Supervisor
■ Thermal Protection
2 DESCRIPTION
L8202 is a multifunction analog ASIC designed for
MFP Inkjet printer applications.
L8202 integrates 4 full H Bridge drivers, 2 switch-
ing Buck type voltage regulators, 4 operational
amplifiers, 6 open drain drivers, Reset Generation
circuitry and over temperature protection circuitry.
Figure 2. Block Diagram
Figure 1. Package
TQFP64
Table 1. Order Codes
Part Number
L8202
Package
TQFP64 (Exposed Pad Down)
The regulated Voltages are: VCC that can be ei-
ther 3.3V or +5V and VDD, programmable by a re-
sistor divider network from +3V to +17V
It is possible to increase the Output Current capa-
bility of the VDD regulator by adding an external
discrete Power DMOS.
An internal regulator is present in the IC in order to
supply several internal blocks. The 5V output volt-
age is filtered on pin V5 (Typical filter capacitor =
100nF) .
L8202
OP.
Amps
LM358
like
DC MTR #1 H
Drive
DC MTR #2 H
Drive
PWM gen.
DC motor
DC motor
VPH regulator
Vcc regulator
3.3V or 5V
Phase A H
Drive
Phase B H
Drive
SERIAL
INTERFACE
Sleep mode
LED
Drivers
Vcc switch
Reset gen.
1 Stepper motor or
2 DC
motor
February 2005
Rev. 2
1/15