Bu And Acc Comparators; Ctmr And Mute - Allegro MicroSystems A8600 Manual

A8600
ELECTRICAL CHARACTERISTICS (continued)
unless otherwise specified
Characteristic

BU AND ACC COMPARATORS

BUI and ACCI Detect Threshold
BUI and ACCI Input Bias 1
BUO Delay
ACCO Delay
BUO and ACCO Output Voltage
BUO and ACCO Forced Low

CTMR and MUTE

CTMR Charge Current 1
CTMR Discharge Current 1
CTMR Upper Threshold
CTMR Lower Threshold
CTMR Pull Down Resistance
MUTE Low Output Voltage
MUTE Leakage Current 1
MUTE Rising Delay
MUTE Falling Delay (De-glitch)
MUTE Self-Protect Shutoff
1 Negative current is defined as coming out of the node or pin, positive current is defined as going into the node or pin.
2 Thermally limited depending on input voltage, duty cycle, regulator load currents, PCB layout, and airflow.
3 Determined by design and characterization, not production tested.
Quadruple Output Regulator with Two High-Side Switches,
BU/ACC Voltage Detectors, and Mute Delay
Valid at 5.5 V ≤ V
Symbol Test Conditions
V
DET
I I V or V ≤ 5.0 V
BUI, ACCI BUI ACCI
t 20 mV input overdrive
dBUO
t 20 mV input overdrive
dACCO
V ,
BUOH
I = I = −3 mA
BUO ACCO
V
ACCOH
V ,
BUOL
I = I = 3 mA
BUO ACCO
V
ACCOL
V , I = I = 3 mA , 2 V < V
BUOLF BUO ACCO
V V < 5.5 V
ACCOLF IN1
I MUTE = low, V
CTMR(CHRG) CTMR
I MUTE = low, V
CTMR(DIS) CTMR
V V rising
CTMRVH CTMR
V V falling
CTMRVL CTMR
R MUTE = high
CTMR
V I = 3 mA
MUTEOL MUTE
I V = 5.0 V
MUTELKG MUTE
t C = 0.10 µF
drMUTE CTMR
t From BUO set low to MUTE low
dfMUTE
V
MUTE(OFF)
≤ 26 V, –40°C ≤ T
INx A
< 3 V,
BIAS
rising
falling
≤ 125ºC, –40°C ≤ T ≤ 125ºC;
J
Min. Typ. Max.
1.181 1.205 1.229
30 65 100
− 1.5 5
− 1.5 5
V –
BIAS
− V
BIAS
300 mV
− − 300
− − 300
−2.50 −2.00 −1.50
1.50 2.00 2.50
1.181 1.205 1.229
185 215 245
− 50 −
− − 300
−1 − 1
725 1000 1275
8 16 32
− 8.5 −
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Unit
V
nA
µs
µs
V
mV
mV
µA
µA
V
mV
kΩ
mV
µA
ms
µs
V
19