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Part: A2540SLB
Category:
Power Management
-> Motor Controller/Drivers
-> Stepper Motor controller/driver
Description: Multi-output Switching Regulator
Company: Allegro Micro Systems, Inc.
Datasheet: Download A2540SLB datasheet File size : 192 kB
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Datasheet text preview:
MOTOR DRIVERS
2540
QUAD POWER DRIVER
Combining logic gates and inverting high-current bipolar outputs, these quad Darlington power drivers provide interface between low-level signal-processing circuits and power loads totaling 360 W. Each of the four independent outputs can sink up to 1.8 A in the ON state with peak inrush currents to 2.5 A. The four power outputs are each comprised of an open-collector Darlington driver and an internal flyback/clamp diode for switching inductive leads. They feature a minimum breakdown and sustaining voltage of 50 V. The logic inputs are compatible with TTL and 5 V CMOS logic systems. Typical applications include print heads, relays, solenoids, and dc stepping motors. These drivers can also be used to drive high-current incandescent lamps, LEDS, and heaters
Part Numbers: UDN2540B and A2540SLB
Pinout Diagram
(A2540SLB)
OUT4 K NO CONNECTION OUT3 GROUND GROUND OUT 2 NO CONNECTION K OUT1
1 2 3 4 5 6 7 8 9 10 NC V CC NC NC NC
20 19 18 17 16 15 14 13 12 11
IN 4 IN3 NO CONNECTION ENABLE GROUND GROUND SUPPLY NO CONNECTION IN 2 IN 1
Features s s s s s s 1.8 A Continuous Output Current Output Voltage to 50 V TTL and 5 V CMOS Compatible Inputs Efficient Input/Output Pinning Integral Transient-Suppression Diodes Replaces L6221A and L6221CD
Dwg. PP-017-3
www.allegromicro.com
A Sanken Company
17
MOTOR DRIVERS
2916 THRU 2919 AND 6219
DUAL FULL-BRIDGE PWM MOTOR DRIVERS
Part Numbers UDN2916B UDN2916EB UDN2916LB UDQ2916B UDQ2916EB UDQ2916LB UDN2917EB UDQ2917EB A2919SB A2919SLB L6219DS Package DIP PLCC SOIC DIP PLCC SOIC PLCC DIP SOIC SOIC Max. Continuous Output Voltage Output Current 45 V ±750 mA Peak Output Current ±1 A Protection yes Features 1/2 step
45 V 45 V 45 V
±1.5 A ±750 mA ±750 mA
±1.75 A ±1 A ±1 A
yes yes yes
1/2 step 1/4 step 1/2 step
PWM Current-Control Circuitry
(2917 shown, quarter-step devices include independent 2-bit reference voltage dividers)
CHANNEL 1 PIN NUMBERS SHOWN. VBB
22
OUT B
6 3
OUT A V REF 44 20 k ÷10 40 k 10 k I0 2 I1 1 R S
5
E SENSE
4
+
ONE SHOT
41 RC
SOURCE DISABLE
RC C C R T
C
T
Dwg. EP-007-2A
18
A Sanken Company
www.allegromicro.com
MOTOR DRIVERS
2916 THRU 2919 AND 6219 DUAL FULL-BRIDGE PWM MOTOR DRIVERS (CONT'D)
Dual full-bridge motor drivers are designed to drive both windings of a bipolar stepper motor or bidirectionally control two dc motors. Both bridges include internal pulse-width modulation (PWM) control of the output current. Satlington outputs combine the low voltage drop of a saturated transistor and the high peak current capability of a Darlington. For PWM current control, the maximum output current is determined by the user's selection of a reference voltage and sensing resistor. With quarterstep operation, two logic-level inputs select output current limits of 0, 33 or 41, 67, or 100% of the maximum level. A PHASE input to each bridge determines load current direction. The bridges include both ground clamp and flyback diodes for protection against inductive transients. Internally generated delays prevent cross-over currents when switching current direction. Special power-up sequencing is not required. Thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits.
'B' PACKAGE, CHANNEL 1 PIN NUMBERS SHOWN.
Features s s s s s s 750 mA Continuous Output Current 45 V Output Sustaining Voltage Internal Clamp Diodes Internal PWM Current Control Low Output Saturation Voltage Internal Thermal Shutdown Circuitry
PWM Current-Control Circuitry with Quarter Stepping
(UDN2916B shown)
VBB
24
OUT B
1 21
OUT A V REF 15 20 k ÷10 40 k 10 k I 0 20 I 1 17 R S
23
E SENSE
22
+
ONE SHOT
14
SOURCE DISABLE
RC C C R T
RC
C
T
Dwg. EP-007B
www.allegromicro.com
A Sanken Company
19
MOTOR DRIVERS
2962
DUAL HALF-BRIDGE PWM SOLENOID/MOTOR DRIVER
Features s 4 A Peak Output s 45 V Min. Sustaining Voltage s Internal Clamp Diodes s TTL /PMOS/CMOS Compatible Inputs s High-Speed Chopper Functional Block Diagram
(One of Two Drivers)
VCC
Part Number: UDN2962W
SOURCE
LOAD SINK IN SENSE GND
+ _
RS (TYP.0.1 )
VREF RH
-10
THS RT
Using PWM to minimize power dissipation and maximize load efficiency, this dual driver is recommended for impact printer solenoids and stepper motors. It is comprised of two source/sink driver pairs and can be connected to drive two independent loads or a single load in the full-bridge configuration. Both drivers include output clamp/flyback diodes, input gain and level shifting, a voltage regulator for single-supply operation, and pulse-width modulated output-current control circuitry. Inputs are compatible with most TTL, DTL, LSTTL, and low-voltage CMOS or PMOS logic. The peak output current and hysteresis for each source/sink pair is set independently. Output current, threshold voltage, and hysteresis are set by the user's selection of external resistors. At the specified output-current trip level, the source driver turns OFF. The internal clamp diode then allows current to flow without additional input from the power supply. When the lower current trip point is reached, the source driver turns back ON.
20
A Sanken Company
www.allegromicro.com
MOTOR DRIVERS
3932
THREE-PHASE BRUSHLESS DC MOTOR CONTROLLER
Features and Benefits
s s s s s s s s s s s s s s s s s
Part Number: A3932SEQ
Drives Wide Range of N-Channel MOSFETs Sources 1.25 A for Gate Turn-On Sinks 2.5 A for Gate Turn-Off Synchronous Rectification Power MOSFET Protection NE W Adjustable Dead Time for Cross Conduction Protection Fast and Slow Current Decay Modes Internal PWM Current Control PWM Torque-Control Input Motor Lead Short-to-Supply and Ground Protection Internal 5 V Regulator Direction Control Brake Input Functional Block Diagram & Typical Application Fault Diagnostic Output Tachometer Output Thermal Shutdown Undervoltage Protection Regulator
VREG VBB LCAP H1
Undervoltage Detect
Bootcap Monitor
CA
H2
CBOOT
H3 To Phase C GHA
PWM
High Side Protection Logic Control Logic Gate-Source Monitor
Turn-on Delay
High Side Driver
DIR
RESET SA VREG
to LCAP
SR
BRAKE MODE TACH
Low Side Protection Logic
Turn-on Delay
Low Side Driver
GLA
To Phase B
RC C
T
RC Blanking Fixed - Off Time +
Bootstrap low Vgs Low Motor Lead Short Invalid Hall Undervoltage
PGND
RT
SENSE RS FAULT
to LCAP REF
DEAD
Dead-Time Adjust
AGND to LCAP
www.allegromicro.com
A Sanken Company
21
Others parts begin by a2
A2-1 A2-2 A2-3 A2-4
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