MIC2342 MICREL [Micrel Semiconductor], MIC2342 Datasheet - Page 12

• Manufacturer Part Number: MIC2342
• Manufacturer: MICREL [Micrel Semiconductor]

AC Electrical Characteristics
12V
over the full operating temperature range from 0°C < T
Notes:
1.
2.
3.
4.
5.
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
OFF(12V)
OFF(3V)
SC(TRAN)
PROP(12VFAULT)
PROP(3VFAULT)
PROP(VAUXFAULT)
LPW
INTCLK
POR
/CRSW[A/B]
/PWRGD
/DLY_PWRGD
DFLT
AUTO RETRY
Micrel, Inc.
June 2008
IN[A/B]
Exceeding measurements given within the “Absolute Maximum Ratings” section may damage the device.
The device is not guaranteed to function outside of the measurements given in the “Operating Ratings” section.
These devices are ESD sensitive. Employ proper handling precautions. The HBM is 1.5kΩ in series with 100pF.
Specifications apply to packaged product only.
Parameters guaranteed by design, not subject to test.
= 12V, 3V
Parameter
12V Current Limit Response Time
(5)
(Figure 2)
3.3V Current Limit Response
Time
(Figure 3)
VAUX[A/B] Current Limit
Response Time (Figure 5)
Delay from 12VOUT[A/B]
Overcurrent Limit to
/FAULT_MAIN[A/B] = LOW
Delay from 3VOUTA/B]
Overcurrent Limit to
/FAULT_MAIN[A/B] = LOW
Delay on VAUX[A/B] Overcurrent
from CFILTER “time out” (V
= V
ON[A/B], AUXEN[A/B] Low Pulse
Width to Reset Output Upon Fault
Removal
Digital Filter (Internal Clock)
Period
MIC2342 Power-On Reset Time
after VSTBY[A/B] becomes valid
(5)
/CRSW[A/B] Debounce Delay
Time
/PWRGD[A/B] De-assertion Delay
Time
/DLY_PWRGD[A/B] Assertion
Delay after /PWRGD[A/B]
Assertion
Internal Primary OC Detector
Response Time
(MIC2342 and MIC2342R)
Auto Retry Period
(MIC2342R only)
/FAULT_AUX[A/B] = LOW
IN[A/B]
FILTER
(5)
) to
= 3.3V, V
(5)
STBY[A/B]
(4)
(5)
CFILTER
= 3.3V, T
(5)
(5)
Condition
MIC2342-2YTQ
CGATE[A/B] = 25pF
V
MIC2342-2YTQ
CGATE[A/B] = 25pF
V
VAUX[A/B] = 0V, VSTBY[A/B] = +3.3V
MIC2342-2YTQ
CFILTER[A/B] = OPEN
V
CFILTER[A/B] = OPEN
V
MIC2342-2YTQ
limit to /FAULT_AUX[A/B] output
CFILTER[A/B] = 50pF
V
ON[A/B], AUXEN[A/B]
ON[A/B] or AUXEN[A/B] High-to-Low
Transition
ON[A/B], AUXEN[A/B] = HIGH,
12VOUT[A/B], 3VOUT[A/B], VAUX[A/B] =
VALID;
CFILTER[A/B] = GND
MIC2342-2YTQ
A
IN
IN
IN
IN
AUX
= HIGH-to-LOW-HIGH
= 25°C, unless otherwise noted. Bold values specifications applies
–V
–V
–V
–V
A
Output Grounded
SENSE
SENSE
SENSE
SENSE
< +70°C.
12
= 140mV
= 140mV
= 140mV
= 140mV
5.10
20.5
Min
200
640
410
80
80
5
Typ
2.5
10
41
1
1
MIC2342/2342R
M9999-062008-B
15.85
2040
1236
Max
63.5
255
241
2.0
2.0
15
5
1
2
Units
ms
ms
ms
ms
µs
µs
µs
µs
µs
µs
µs
µs
µs
ns