MIC2007/2017
Adjustable Current Limit
Power Distribution Switch
General Description
The MIC2007 and MIC2017 are current limiting, high-
side power switches, designed for general purpose
power distribution and control in PCs, PDAs, printers
and other self-powered systems.
The MIC2007 and MIC2017’s primary functions are
current limiting and power switching. They are thermally
protected and will shutdown should their internal
temperature reach unsafe levels. This protects both the
device and the load under high current or fault
conditions.
Features include: user adjustable output slew rate
limiting, automatic load discharge and under voltage
detection. Both devices offer user programmable current
limiting thereby providing designers a continuous
spectrum of current limits from 200mA to 2 Amps.
The MIC2017 offers a unique new feature: Kickstart
™
,
which allows momentary high current surges to pass
unrestricted without sacrificing overall system safety.
The MIC2007 and MIC2017 are excellent choices for
USB and IEEE 1394 (FireWire) applications or for any
system where current limiting and power control are
desired.
The MIC2007 and MIC2017 are offered in space saving
6-pin SOT-23 and 2mm x 2mm MLF
TM
packages.
Features
•
70mΩ typical on-resistance
•
2.5V – 5.5V operating range
•
User adjustable current limit: 0.2A – 2.0A
•
•
•
•
•
•
Kickstart
™
User adjustable output slew rate control
Automatic load discharge
Thermal protection
Under voltage lock-out
Low quiescent current
Applications
•
•
•
•
•
•
•
•
USB / IEEE 1394 power distribution
Desktop and laptop PCs
Set top boxes
Game consoles
PDAs
Printers
Docking stations
Chargers
_________________________________________________________________________________________________________
Typical Application
MIC2007
MIC2017
5V Supply
VIN
C
SLEW
USB
Controller
ENABLE
VOUT
GND
I
LIMIT
V
BUS
D+/D-
USB
Port
D+/D-
USB
Port
Figure 1. Typical Application Circuit
Kickstart is a trademark of Micrel, Inc
MLF and
MicroLeadFrame
are trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
October 2005
M9999-102805
Micrel
MIC2007/MIC2017
MIC2000 Family Members
Part Number
Normal Limiting
2003
2004
2005
2006
2007
2008
2009
Kickstart
2013
2014
2015
2016
2017
2018
2019
Adj.
Fixed
I Limit
I Adj.
--
--
--
--
▲
▲
▲
Enable
--
▲
▲
▲
▲
▲
▲
Pin Function
C
SLEW
--
--
▲
▲
▲
▲
--
FAULT/
--
--
▲
--
--
--
▲
DLM*
--
--
--
▲
--
--
--
Load
Discharge
--
▲
--
--
▲
--
--
* Dynamic Load Management
Adj = Adjustable current limit
Fixed = Factory programmed current limit
Ordering Information
Part Number
MIC2007YM6
Marking
(1)
FHAA
No
MIC2007YML
(2)
HAA
0.2A – 2.0A
MIC2017YM6
FQAA
Yes
MIC2017YML
(2)
Notes:
1. Under-bar symbol ( _ ) may not be to scale.
2. Consult Factory for availability
2mm X 2mm MLF
Current Limit
Kickstart
Pb-Free
Package
SOT-23-6
Yes
SOT-23-6
QAA
2mm X 2mm MLF
October 2005
2
M9999-102805
Micrel
MIC2007/MIC2017
Pin Configuration
V
OUT
1
C
SLEW
2
I
LIMIT
3
PAD ON
BACKSIDE
IS GROUND
6 V
IN
5 GND
4 ENABLE
VIN 1
GND 2
ENABLE 3
6 V
OUT
5 C
SLEW
4 I
LIMIT
6-Pin 2mm X 2mm MLF (ML)
Top View
SOT 23-6 (M6)
Top View
Pin Description
Pin
Number
SOT-23
1
2
3
4
Pin
Number
MLF
6
5
4
3
Pin
Name
VIN
GND
ENABLE
I
LIMIT
Type
Description
Input
--
Input
Input
Supply input. This pin provides power to both the output switch and the
MIC2007/2017’s internal control circuitry.
Ground.
Output enable pin. A logic HIGH activates the output switch, applying power to
the load attached to V
OUT
.
Sets the current limit threshold via a resistor connected between I
LIMIT
and
GND.
I
LIMIT
= Current Limiting Factor (CLF) / R
SET
.
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 MIC2007/2017 is connected to this
pin.
5
6
2
1
CSLEW
VOUT
Input
Output
October 2005
3
M9999-102805
Micrel
MIC2007/MIC2017
Absolute Maximum Ratings
(1)
All pins ...........................................................–0.3 to 6V
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-23-6 ....................................................230°C/W
MLF 2x2 mm...................................................90°C/W
MLF 2x2 mm
θ
JC (5)
.........................................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)
R
DSCHG
CLF
Parameter
Switch Input Voltage
Internal Supply Current
Internal Supply Current
Output Leakage Current
Power Switch Resistance
Load Discharge Resistance
Current Limit: Factor
R
SET
(Ω) = CLF (V)
I
OUT
(A)
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
IN
= 5V, I
SINK
= 5 mA
I
OUT
= 2.0A, V
OUT
= 0.8V
IN
I
OUT
= 1.0A, V
OUT
= 0.8V
IN
I
OUT
= 0.5A, V
OUT
= 0.8V
IN
I
OUT
= 0.2A, V
OUT
= 0.8V
IN
MIC2017, V
IN
= 2.5V
V
IN
rising
V
IN
falling
V
IL
(max.)
V
IH
(min.)
Min
2.5
Typ
1
80
1.2
70
Max
5.5
5
330
10
100
125
200
286
293
298
299
6
2.5
2.4
0.5
Units
V
µA
µA
µA
mΩ
mΩ
Ω
V
V
V
V
A
V
V
V
µA
°C
70
210
190
168
144
2.2
2.0
1.9
1.5
126
250
243
235
225
4
2.25
2.15
I
LIMIT_2nd
UVLO
THRESHOLD
V
EN
I
EN
OT
THRESHOLD
Secondary current limit
(Kickstart)
Under Voltage Lock Out
threshold
ENABLE Input Voltage
ENABLE Input Current
Over-temperature Threshold
V
EN
= 0V to 5.0V
T
J
increasing
T
J
decreasing
1
145
135
5
October 2005
4
M9999-102805
Micrel
MIC2007/MIC2017
AC Characteristics
Symbol
t
RISE
t
D_LIMIT
t
RESET
Parameter
Output turn-ON rise time
Delay before current limiting
Delay before resetting
Kickstart current limit delay,
t
D_LIMIT
Output Turn-on Delay
Condition
R
L
= 10Ω, C
LOAD
= 1µF,
V
OUT
= 10% to 90%
MIC2017
Out of current limit following a
current limit event.
MIC2017
R
L
= 43Ω, C
L
= 120µF,
C
SLEW
≤
10pF,
V
EN
= 50% to V
OUT
= 10%
t
OFF_DLY
Output Turn-off Delay
R
L
= 43Ω, C
L
= 120µF,
C
SLEW
≤
10pF,
V
EN
= 50% to V
OUT
= 90%
700
µs
1000
1500
µs
77
77
128
128
192
192
ms
ms
Min
500
Typ
1000
Max
1500
Units
µs
t
ON_DLY
ESD
Symbol
V
ESD_HB
V
ESD_MCHN
Parameter
Electrostatic Discharge
Voltage: Human Body Model
Electrostatic 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
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.
October 2005
5
M9999-102805
嵌入式系统
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