L295_03 Datasheet, PDF (1/7 Pages) STMicroelectronics – DUAL SWITCH-MODE SOLENOID DRIVER

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
OPERATION
s REGULATED OUTPUT CURRENT
(adjustable)
s FEW EXTERNAL COMPONENTS
s SEPARATE LOGIC SUPPLY
s THERMAL PROTECTION
DESCRIPTION
The L295 is a monolithic integrated circuit in a 15
-lead Multiwatt® package; it incorporates all the
functions for direct interfacing between digital cir-
cuitry and inductive loads.
The L295 is designed to accept standard micro-
processor logic levels at the inputs and can drive
2 solenoids. The output current is completely con-
BLOCK DIAGRAM
MULTIWATT15
ORDERING NUMBER: L295
trolled by means of a switch-ing technique allow-
ing 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.
+V_SS
+V_S
V_REF2
C
R
10
VOLTAGE
REGULATOR
THERMAL
SHUTDOWN
1
H2
DRIVER
D3
15
R2
D4
L2
14
LOGIC
CIRCUITS
R
Q
FF2
S
R_S2
13
12
L2
DRIVER
9
OSCILLATOR
H1
DRIVER
R
Q
FF2
S
LOGIC
CIRCUITS
L1
DRIVER
11 7 6
V_in2 EN V_in1
D03IN1503
1
2
R1
L1
3
4
5
8
+V_S
D1
D2
V_REF1
October 2003
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