A1162 Datasheet, PDF (3/23 Pages) Allegro MicroSystems – Programmable Precision Hall-Effect Switch with Advanced Diagnostics

A1162
Programmable Precision Hall-Effect
Switch with Advanced Diagnostics
OPERATING CHARACTERISTICS: Valid over full operating voltage and ambient temperature ranges, unless otherwise
specified
Characteristics
Electrical Characteristics
Symbol
Test Conditions
Min.
Typ.¹
Max.
Unit
Supply Voltage
Output Leakage Current
Output Saturation Voltage
Output Current Limit
Power-On Time ²
Chopping Frequency
Output Rise Time ^2,3
Output Fall Time ^2,3
Supply Current
Reverse-Battery Current
Supply Zener Clamp Voltage
Output Zener Voltage
Diagnostic Characteristics
PWM Carrier Frequency
Duty Cycle (Diagnostic Mode) ⁴
DIAG Pin Input Resistance
DIAG Pin Input Low Voltage
Threshold
V_CC
I_OUTOFF
V_OUT(SAT)
I_OM
t_ON
f_C
t_r
t_f
I_CC(ON)
I_CC(OFF)
I_CC(DIAG)
I_RCC
V_ZSUP
V_ZOUT
Operating, T_J < 165°C
V_OUT = 24 V, B < B_RP
I_OUT = 20 mA, B > B_OP
B > B_OP
V_CC > 3.8 V, B < B_RPmin – 10 G,
B > B_OPmax + 10 G
R_LOAD = 820 Ω, C_L = 20 pF
R_LOAD = 820 Ω, C_L = 20 pF
B > B_OP
B < B_RP
DIAG = 1, T_J < T_J(MAX)
V_RCC = –18 V
I_CC = 8 mA, T_A = 25°C
I_OUT = 3 mA, T_A = 25°C
f_PWMout
DC_FAIL
DC_FAIL
DC_PASS
R_DIAG
V_IL
With diagnostic mode enabled
DIAG = 1, Device Malfunction
DIAG = 1, Device Malfunction
DIAG = 1, Device Normal
DIAG pin pulled low
Device in Normal Mode
3.8
–
24
V
–
–
10
µA
–
185
400
mV
30
–
60
mA
–
–
25
µs
–
400
–
kHz
–
0.2
2
µs
–
0.1
2
µs
–
–
5
mA
–
–
5
mA
–
16
25
mA
–
–
–10
mA
30
–
–
V
28
–
–
V
–
3
–
kHz
–
0
40
%
60
100
–
%
40
50
60
%
–
1
–
MΩ
–
–
0.6
V
DIAG Pin Input High Voltage
Threshold
V_IH
Device in Diagnostic Mode
1.5
–
5
V
Diagnostic Time
The diagnostics feature should be enabled
t_D
for at least t_D in order to obtain an accurate
1
–
–
ms
PWM signal.
Diagnostic Disable Time
t_DIS
Time from when DIAG pin is released (High
to Low transition) to valid device output
–
–
25
µs
Continued on next page...
1 _{Typical data is at TA = 25ºC and VCC = 12 V and it is for design information only.}
2 _{Power-on time, Rise time and Fall time are guaranteed through device characterization and not final test.}
3 _{CL = oscilloscope probe capacitance.}
4 _{When the DUT passes the diagnostic tests, the output will be a 50% duty cycle signal. Any other output indicates the DUT failed the test. Please see the application notes for}
more information.
Allegro MicroSystems, LLC
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com