A4401 Allegro MicroSystems, Inc., A4401 Datasheet - Page 4

• Manufacturer Part Number: A4401
• Description: A4401 Automotive Quasi-resonant Flyback Control Ic
• Manufacturer: Allegro MicroSystems, Inc.

A4401
ELECTRICAL CHARACTERISTICS
General
VIN Quiescent Current
LX Leakage Current
LX Input Bias Current
Minimum Frequency
Soft Start
Gate Drive
Drive High Voltage, V
Drive High Voltage, 10 V > V
Rise Time, V
Rise Time, 10 V > V
Fall Time, V
Fall Time, 10 V > V
Current Sense Input
Maximum Sense Voltage (Current Limit)
Sense Input Bias Current
Current Sense Blanking
Reference Supply
Reference Voltage Tolerance
Operational Transconductance Amplifier
Output Impedance
Gm Constant
Output Source Current
Output Sink Current
Input Bias Current
Enable Input
EN Input Low Voltage
EN Input High Voltage
EN Input Hysteresis
EN Input Current
Protection
VIN Turn-On Threshold
VIN Turn-Off Threshold
Undervoltage Hysteresis
Overtemperature Shutdown
Overtemperature Hysteresis
1
2
3
For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.
Specifications over operating temperature range are assured by design and characterization.
Guaranteed by design.
IN
IN
Characteristics
3
> 10 V
> 10 V
IN
IN
IN
> 7 V
> 7 V
> 10 V
IN
> 7 V
Automotive Quasi-Resonant Flyback Control IC
1,2
valid at T
Symbol
V
T
I
t
V
V
I
LXLEAK
V
I
BLANK
V
I
V
T
INOFF
K
I
UVOFF
JSDhys
Z
INON
V
I
I
UVhys
f
I
BIAS
V
I
UVON
t
SRC
V
I
SW
GDH
ISS
SIN
INH
REF
INL
JSD
LX
SS
Ihys
t
t
Gm
OP
CL
IH
r
f
IL
J
= –40°C to +150°C, V
EN = Low
EN = High, no MOSFET switching
EN = Low, V
EN = High, V
C
C
C
C
V
V
V
V
V
V
Voltage rising
Voltage falling
Temperature increasing
ISS
COMP
COMP
IN
IN
IN
LOAD
LOAD
LOAD
LOAD
= 0 V
= 14 V
= 40 V
= –300 mV to 1 V
= 1 nF, 10% to 90% of V
= 1 nF, 10% to 90% of V
= 1 nF, 90% to 10% of V
= 1 nF, 90% to 10% of V
= 1.4 V, V
= 1.4 V, V
LX
LX
Test Conditions
= 40 V
= 60 V
A
A
= 1.36 V, T
= 1.06 V, T
IN
= 7 to 40 V (unless noted otherwise)
A
A
= 25ºC
= 25ºC
GS
GS
GS
GS
= 9 V
, V
, V
= 0 V
IN
IN
= 7 V
= 7 V
1.180
Min.
600
100
–30
200
–10
2.4
5.4
4.9
25
10
20
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
–
–
–
–
5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
V
IN
1.205
–100
Typ.
800
145
470
–25
500
165
2.3
8.4
0.5
35
10
60
90
30
40
25
15
–
–
–
– 0.5
–
–
–
–
–
–
–
–
–
V
IN
1.230
Max.
1000
145
190
–20
200
3.3
9.5
0.8
6.5
– 0.25
10
45
15
10
30
10
50
1
–
–
–
–
–
–
–
–
–
7
–
–
–
Units
kHz
mV
MΩ
mV
mA
ms
μA
μA
μA
μA
μS
μA
μA
μA
μA
μA
ns
ns
ns
ns
ns
nA
ºC
ºC
V
V
V
V
V
V
V
V
4