Micrel, Inc.
Symbol
ΔV
ON
I
ON
V
START
V
AUTO
I
AUTO
V
FB
V
FBHYS
I
FBLKG
V
OL
Parameter
ON Pin Threshold Line Regulation
ON Pin Input Current
Start-Up Delay Timer Threshold
Auto-Restart Threshold Voltage
(MIC2583R only)
Auto-Restart Current
(MIC2583R only)
Power-Good Threshold Voltage
FB Hysteresis
FB Pin Leakage Current
/POR, /FAULT, PWRGD
Output Voltage
(/FAULT, PWRGD MIC2583/83R only)
Output Discharge Resistance
(MIC2583/83R only)
Fast Overcurrent SENSE to GATE
Low Trip Time
Slow Overcurrent SENSE to GATE
Low Trip Time
ON Delay Filter
FB Delay Filter
V
CC
= 5V, V
CC
−
V
SENSE
= 100mV
C
GATE
= 10nF, Figure 2
V
CC
= 5V, V
CC
−
V
SENSE
= 50mV
C
FILTER
= 0, Figure 2
2.3V = V
CC
= 13.2V, V
FB
= 1.3V
I
OUT
= 1mA
Condition
2.3V
≤
V
CC
≤
13.2V
V
ON
= V
CC
V
CPOR
rising
Upper threshold
Lower threshold
Charge current
Discharge current
2.3V = V
CC
= 13.2V
FB rising
FB falling
1.19
1.15
0.26
0.19
0.26
10
Min
MIC2582/MIC2583
Typ
2
−0.5
0.31
1.24
0.31
13
1.4
1.24
1.20
40
1.5
0.4
0.36
1.30
0.36
16
2
1.29
1.25
Max
Units
mV
µA
V
V
V
µA
µA
V
V
mV
µA
V
R
DIS
500
1000
Ω
AC Parameters
(4)
t
OCFAST
t
OCSLOW
t
ONDLY
t
FBDLY
1
5
20
20
µs
µs
µs
µs
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Specification for packaged product only.
4. Not a tested parameter, guaranteed by design.
Timing Diagrams
Figure 2. Current-Limit Response
Figure 3. Power-On Reset Response
Figure 4. Power-On Start-Up Delay Timing
April 2009
6
M9999-043009-C
MICREL [ MICREL SEMICONDUCTOR ]
