L295
DUAL SWITCH-MODE SOLENOID DRIVER
s HIGH CURRENT CAPABILITY (up to 2.5A per channel)
s HIGH VOLTAGE OPERATION (up...
L295
DUAL SWITCH-MODE SOLENOID DRIVER
s HIGH CURRENT CAPABILITY (up to 2.5A per channel)
s HIGH VOLTAGE OPERATION (up to 46V for
power stage) s HIGH EFFICIENCY SWITCHMODE
t(s) OPERATION
s REGULATED OUTPUT CURRENT
uc (adjustable) d s FEW EXTERNAL COMPONENTS ro s SEPARATE LOGIC SUPPLY P s THERMAL PROTECTION olete DESCRIPTION s The L295 is a monolithic integrated circuit in a 15 b -lead Multiwatt® package; it incorporates all the O functions for direct interfacing between digital cir- cuitry and inductive loads. t(s) The L295 is designed to accept standard micro-
processor logic levels at the inputs and can drive
c 2 solenoids. The output current is completely condu BLOCK DIAGRAM
MULTIWATT15 ORDERING NUMBER: L295
trolled by means of a switch-ing technique allowing very efficient operation. Furthermore, it includes an enable input and dual supplies (for interfacing with peripherals running at a higher voltage than the logic). The L295 is particularly suitable for applications such as hammer driving in matrix printers, step motor driving and electromagnet controllers.
Obsolete Pro +VSS
10
VOLTAGE
REGULATOR
THERMAL SHUTDOWN
C R
9 OSCILLATOR
1 +VS
H2
DRIVER
1
+VS
H1
DRIVER
D3
15
R2
D4 L2 14
LOGIC CIRCUITS
R Q
FF2
S
R Q
FF2
S
LOGIC CIRCUITS
2
D1
R1
D2 L1 3
L2 DRIVER
L1 DRIVER
RS2
13
4
VREF2
12
5
VREF1
11 7 6
8
Vin2 EN Vin1
D03IN1503
October 2003
1/7
L295
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VS
Supply voltage
50
V
V...