MIC2005/2015
Fixed Current Limit
Power Distribution Switch
General Description
MIC2005/2015 is a current limiting, high-side power
switch, designed for general purpose power distribution
and control in digital televisions (DTV), printers, set top
boxes (STB), PCs, PDAs, and other peripheral devices.
MIC2005/2015 primary functions are current limiting and
power switching. It is thermally protected and will
shutdown should its internal temperature reach unsafe
levels, protecting both the device and the load, under
high current or fault conditions.
Features include fault reporting, with fault blanking to
eliminate noise-induced false alarms, output slew rate
limiting, under voltage detection, automatic-on output,
and enable pin with choice of either active low or active
high enable. The FET is self-contained, with the current
limit value being factory set to one of several convenient
levels.
MIC2015 offers a unique new patented feature:
Kickstart
™
, which allows momentary high current
surges to pass unrestricted without sacrificing overall
system safety.
MIC2005/2015 is an excellent choice for USB and IEEE
1394 (FireWire) applications or for any system where
current limiting and power control are desired.
The MIC2005/2015 is offered in space saving 5-pin
SOT-23, 6-pin SOT-23, and 2mm x 2mm MLF
packages.
Data sheets and support documentation can be found
on Micrel’s web site at www.micrel.com.
Features
•
•
•
•
•
•
•
•
•
70mΩ typical on-resistance
Enable active high or active low
2.5V - 5.5V operating range
Pre-set current limit values of 0.5 A, 0.8 A, and 1.2 A
Automatic-on output after fault
Thermal Protection
Under voltage lock-out (UVLO)
Low quiescent current
UL Certified
Applications
•
•
•
•
•
•
•
•
•
•
Digital televisions (DTV)
Set top boxes
PDAs
Printers
USB / IEEE 1394 Power Distribution
Desktop and Laptop PCs
Game consoles
Docking stations
Chargers
UL Certification Required
_________________________________________________________________________________________________________
Typical Application
MIC2005/2015
Figure 1. Typical Application Circuit
Kickstart™ is a trademark of Micrel, Inc
MLF and
MicroLeadFrame
are trademarks of Amkor Technology, Inc.
Protected by U.S. Patent No. 7,170,732
UL Certification No. E179633
M9999-011708-A
(408) 944-0800
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
January 2008
Micrel
MIC2005/2015
Pin Configuration
V
OUT
1
NIC 2
NIC 3
PAD ON
BACKSIDE
IS GROUND
6 V
IN
5 GND
4 ENABLE
6-Lead 2 mm X 2 mm MLF (ML)
Top View
SOT 23-6 (M6)
Top View
SOT 23-5 (M5)
Top View
Pin Description
Pin Number
SOT-23
5-Pin
1
2
3
4
6-Pin
1
2
3
4
5
6
6
MLF
6
5
4
3
2
1
Pin
Name
VIN
GND
ENABLE
FAULT/
CLSEW
VOUT
Type
Input
--
Input
Output
Input
Output
Description
Supply input. This pin provides power to both the output switch and the
MIC2005/2015’s internal control circuitry.
Ground.
Switch Enable (Input): Active-high (-1) or active-low (-2)
Fault status. A logic LOW on this pin indicates the MIC2005/2015 is in current
limiting, or has been shut down by the thermal protection circuit. This is an
‘Open Drain’ output allowing logical OR’ing of multiple MIC2005/2015s.
Slew rate control. Adding a small value capacitor between this pin and VIN
slows turn-ON of the power FET.
Switch output. The load being driven by MIC2005/2015 is connected to this
pin.
January 2008
3
M9999-011708-A
(408) 944-0800
Micrel
MIC2005/2015
Absolute Maximum Ratings
(1)
V
IN
, V
OUT
............................................................ –0.3 to 6V
All other pins .................................................. –0.3 to 5.5V
Power Dissipation.................................. Internally Limited
Continuous Output Current..................................... 2.25A
Maximum Junction Temperature ........................... 150°C
Storage Temperature .............................. –65°C to 150°C
Operating Ratings
(2)
Supply Voltage............................................. 2.5V to 5.5V
Continuous Output Current Range .................... 0 to 2.1A
Ambient Temperature Range .................... –40°C to 85°C
Package Thermal Resistance (θ
JA
)
SOT-23-5/6 ..........................................
MLF 2x2 mm............................................
MLF 2x2 mm
θ
JC (5)
..................................
230°C/W
90°C/W
45°C/W
Electrical Characteristics
V
IN
= 5V, T
AMBIENT
= 25°C unless specified otherwise.
Bold
indicates –40°C to +85°C limits.
Symbol
V
IN
I
IN
I
IN
I
LEAK
R
DS(ON)
I
LIMIT
I
LIMIT
I
LIMIT
I
LIMIT_2nd
UVLO
THRESHOL
D
Parameter
Switch Input Voltage
Internal Supply Current
Internal Supply Current
Output Leakage Current
Power Switch Resistance
Current Limit: –0.5
Current Limit: –0.8
Current Limit: –1.2
Secondary current limit
(Kickstart)
Under Voltage Lock Out
Threshold
ENABLE Input Voltage
ENABLE Input Current
Fault status Output Voltage
Over-temperature Threshold
Conditions
Switch = OFF,
ENABLE = 0V
Switch = ON, I
OUT
= 0
ENABLE = 1.5V
V
IN
= 5V, V
OUT
= 0 V, ENABLE
=0
V
IN
= 5V, I
OUT
= 100 mA
V
OUT
= 0.8V
IN
to V
OUT
= 1V
V
OUT
= 0.8V
IN
to V
OUT
= 1V
V
OUT
= 0.8V
IN
, to V
OUT
= 1V
MIC2015, V
IN
= 2.7V
V
IN
Rising
V
IN
Falling
V
IL
(max.)
V
IH
(min)
V
EN
= 0V to 5.0V
I
OL
= 10mA
T
J
increasing
T
J
decreasing
Min
2.5
Typ
Max
5.5
Units
V
µA
µA
µA
mΩ
mΩ
A
A
A
A
V
V
V
V
µA
V
°C
1
80
12
70
0.5
0.8
1.2
2.2
2.0
1.9
1.5
1
0.25
145
135
0.7
1.1
1.6
4
2.25
2.15
5
300
100
100
125
0.9
1.5
2.1
6
25
2.4
0.5
5
0.4
V
EN
I
EN
V
FAULT
OT
THRESHOLD
January 2008
4
M9999-011708-A
(408) 944-0800
Micrel
MIC2005/2015
AC Characteristics
Symbol
t
RISE
Parameter
Output Turn-ON rise time
Condition
R
L
= 10Ω, C
LOAD
= 1µF,
V
OUT
= 10% to 90%
Time from current limiting to
FAULT/ state change.
MIC2005
Time from I
OUT
continuously
exceeding primary current limit
condition to FAULT/ state
change. MIC2015
MIC2015
Out of current limit following a
current limit.
MIC2015
R
L
= 43Ω, C
L
= 120µF,
V
EN
= 50% to V
OUT
= 90%
R
L
= 43Ω, C
L
= 120µF,
V
EN
= 50% to V
OUT
= 90%
Min
500
20
Typ
1000
32
Max
1500
49
Units
µs
ms
t
D_FAULT
Delay before asserting or
releasing FAULT/
77
77
77
128
128
128
1000
192
192
192
1500
700
ms
ms
ms
µs
µs
t
D_LIMIT
t
RESET
t
ON_DLY
t
OFF_DLY
Delay before current limiting
Delay before resetting
Kickstart current limit delay,
t
LIMIT
Output Turn-ON Delay
Output Turn-OFF Delay
ESD
Symbol
V
ESD_HB
Parameter
Electro Static Discharge
Voltage: Human Body Model
Electro Static Discharge
Voltage; Machine Model
Condition
V
OUT
and GND
All other pins
All pins
Machine Model
Min
±4
±2
± 200
Typ
Max
Units
kV
kV
V
ESD_MCHN
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. Specification for packaged product only.
5. Requires proper thermal mounting to achieve this performance.
January 2008
5
M9999-011708-A
(408) 944-0800
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