MIC2039 Datasheet, PDF (5/21 Pages) Micrel Semiconductor – High-Accuracy, High-Side, Adjustable Current Limit Power Switch

Micrel, Inc.
MIC2039
Electrical Characteristics⁽⁷⁾ (Continued)
VIN = VEN = 5V; CIN = 1µF; COUT = 1µF TJ = 25°C. Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted otherwise.
Symbol Parameter
Condition
Min. Typ. Max.
Current Limit
ILIMIT
Current Limit
(Resistor values are standard
0.1% values)
RLIMIT = 115Ω, VIN = 5V, VOUT = 0.8V × VIN
RLIMIT = 115Ω, VIN = 2.5V, VOUT = 0V × VIN
RLIMIT = 145Ω, VIN = 5V, VOUT = 0.8V × VIN
RLIMIT = 287Ω, VIN = 5V, VOUT = 0.8V × VIN
RLIMIT = 576Ω, VIN = 5V, VOUT = 0.8V × VIN
2.35 2.5 2.65
2.6 2.85 3.1
1.90 2.0 2.10
0.95 1.0 1.05
0.475 0.50 0.525
ILIMIT_2nd
Secondary Current Limit
(Kickstart parts only)
RLIMIT = 1.45kΩ, VIN = 5V, VOUT = 0.8V × VIN
VOUT = 0V
0.19 0.20 0.21
2.2
3.2
6
Symbol Parameter
Condition
Min. Typ. Max.
I/O
VEN
Enable Voltage
Logic Low
Logic High
0.5
1.5
IEN
RFAULT/
Enable Input Current
FAULT/ Output Resistance
0V ≤ VEN ≤ 5V
IOUT = 10mA
1
25
IFAULT/_OFF FAULT/ Off Current
VFAULT/ = VIN
10
Thermal Protection
TSD
Thermal-Shutdown Threshold TJ rising
157
TSDHYS
Thermal-Shutdown
Hysteresis
15
Timing Specifications (AC Parameters)
tRISE
Output Turn-on Rise Time⁽⁸⁾ RLOAD = 10Ω; COUT = 1µF
700
tFALL
Output Turn-off Fall Time⁽⁸⁾
VEN = OFF; RLOAD = 10Ω; COUT = 1µF
32
tON_DLY
Output Turn-on Delay⁽⁸⁾
RLOAD = 10Ω; COUT = 1µF
700
tOFF_DLY
Output Turn-off Delay⁽⁸⁾
RLOAD = 10Ω; COUT = 1µF
5
tSC_RESP
Short Circuit Response
Time⁽⁸⁾
VOUT = 0V (short circuit)
10
tFAULT/
Overcurrent Fault Response
Delay Time⁽⁸⁾
Non-Kickstart parts
16
32
49
tKICKSTART
Overcurrent Fault Response
Delay During Kickstart ⁽⁸⁾
Kickstart parts only
64
120 200
Note:
8. See “Timing Diagrams” (Figures 1 through 4).
Units
A
A
Units
V
µA
Ω
µA
°C
°C
µs
µs
µs
µs
µs
ms
ms
June 7, 2013
5
Revision 1.1