A3940KLP Allegro Microsystems Inc, A3940KLP Datasheet - Page 7

• Manufacturer Part Number: A3940KLP
• Description: IC CTRLR MOSFET FULL 28TSSOP
• Manufacturer: Allegro Microsystems Inc

Specifications of A3940KLP

• Configuration: H Bridge
• Input Type: Non-Inverting
• Delay Time: 225ns
• Current - Peak: 700mA
• Number Of Configurations: 1
• Number Of Outputs: 4
• Voltage - Supply: 7 V ~ 40 V
• Operating Temperature: -40°C ~ 135°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• High Side Voltage - Max (bootstrap): -

6
ELECTRICAL CHARACTERISTICS:
V
square wave.
Characteristics
Bootstrap Circuit
Diode Forward Current Limit
Diode Forward Drop
Diode Resistance
Top-off CP Source Current at Cx
Fault Logic
VBB Undervoltage
VBB Undervoltage Hysteresis
VREG13 Undervoltage
VREG13 Undervoltage Hyst.
VBB Overvoltage
VBB Overvoltage Hysteresis
OVSET Input Current
VDSTH Input Current
Short-to-Ground Threshold
Short-to-Battery Threshold
V
V
Fault Latch Clear Pulsewidth
Fault Clear Propagation Delay
Fault Detection Noise Filter
Fault Output
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
NOTES: Typical Data is for design information only.
3940
FULL-BRIDGE POWER
MOSFET CONTROLLER
DRAIN
DRAIN
IN
V
/Open Bridge Threshold
/Open Bridge Current
BB
Negative current is defined as coming out of (sourcing) the specified device terminal.
= 7 V to 40 V, C
y
p
= 0.47 µF, C
V
Symbol
V
V
V
V
V
I
I
REG13(uv)
V
V
SET(ov)
VDRAIN
V
V
I
I
t
REG13(uv)
STG(th)
STB(th)
t
DSTH
BB(uv)
BB(ov)
DO(th)
noise
out(1)
I
Icx
V
R
latch
out(0)
t
T
CX
BB(uv)
BB(ov)
pd
T
F
F
J
J
r
= 1 µF, C
unless otherwise noted at T
Conditions
3 V < [(V
I
R
V
Decreasing V
V
Decreasing V
V
Increasing V
Increasing V
Increasing V
V
0 V < V
0.3 V < V
V
V
V
V
V
V
If V
RESET = 0
RESET = 1, V
RESET = 0, pulse
From RESET = 1 to FAULT = 0
I
V
T
T
F
out
J
J
CX
BB(recovery)
REG13(recovery)
BB(ov)
DSTH
DSTH
DSTH
DSTH
DSTH
DSTH
out
F
= 10 mA
(100) = [V
increasing
decreasing
DRAIN
= 5 mA, faults negated
- V
= 5 V, open-drain, fault asserted
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
= 0.3 V
= 1.0 V
= 3.0 V
= 0.3 V
= 1.0 V
= 3.0 V
- V
SX
SET(ov)
REG5
< V
REG13
DSTH
BB(recovery)
= 8 V, V
- V
DO(th)
F
BB
BB
BB
= 0.1 µF, C
< 0.9 V
(150) - V
BB(uv)
- V
BB
IN
< 3 V
DSTH
= 13.5 V) - V
, FAULT = 0 to 1, V
, FAULT = 0 to 1, V
, FAULT = 0 to 1, V
REG13(uv)
, FAULT = 0 to 1
BB
< 3 V
= 40 V, GHx = 1(no load)
F
(50)]/100
REG13
CX
] < 12 V
A
= 10 µF, C
= -40°C to +135°C, T
OVSET
OVSET
OVSET
= 0 V
= 0.45 V
= 0.9 V
BOOT
= 0.1 µF, PWM = 22.5 kHz
V
V
V
V
V
V
DSTH
DSTH
DSTH
DSTH
DSTH
DSTH
32.5
0.15
Min
140
200
200
0.8
1.5
4.5
7.5
2.1
1.0
40
16
24
–
–
–
–
–
–
–
–
–
–
-0.14
-0.18
-0.39
-0.20
-0.24
-0.37
J
= -40°C to +150°C,
5.25
8.25
19.6
36.4
Typ
450
450
172
3.1
2.0
1.7
12
28
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Limits
V
V
V
V
V
V
DSTH
DSTH
DSTH
DSTH
DSTH
DSTH
1000
Max
30.5
700
700
500
2.0
6.5
6.0
9.0
4.1
1.4
1.0
3.0
1.0
2.0
0.4
1.0
22
39
–
–
–
–
–
+0.10
+0.13
+0.26
+0.30
+0.30
+0.30
Units
mA
mV
mV
µA
µA
µA
µA
µA
µA
µs
µs
µs
°C
°C
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V