Microchip MIC2505 Single 2a/dual 1a high-side switch Datasheet

MIC2505/6
Single 2A/Dual 1A High-Side Switches
Features
General Description
• Low MOSFET On-Resistance to 3.0V
- 30 mΩ Typical at 5V (MIC2505 Series)
- 35 mΩ Typical at 3.3V (MIC2505 Series)
- 75 mΩ Typical at 5V (Each MIC2506 Output)
- 80 mΩ Typical at 3.3V (Each MIC2506 Output)
• 3.0V to 7.5V Input
• 110 µA Typical On-State Supply Current
• 1 µA Typical Off-State Supply Current
• Output Can be Forced Higher than Input
(Off-State)
• Current-Limit
• Thermal Shutdown
• 2.5V Undervoltage Lockout (UVLO)
• Open-Load Detection (MIC2505YN/M and
MIC2506YN/M Only)
• Open-Drain Fault Flag
• 5 ms (Slow) Turn-On and Fast Turn-Off
• Logic-Level Control/Enable Input
The MIC2505, MIC2505-1, MIC2505-2, and MIC2506
are single and dual integrated high-side power
switches that consist of TTL-compatible control/enable
inputs, a charge pump, and protected N-channel
MOSFETs. The MIC2505/6 family can be used instead
of separate high-side drivers and MOSFETs in many
low-voltage applications.
Applications
•
•
•
•
•
USB Power Distribution
3.3V and 5V Power Management
PC Card Inrush Limiting Switch
Hot Plug-In Power Supplies
Battery Charger Circuits
The MIC2505/6 family controls voltages ranging from
3.0V to 7.5V. The MIC2505-series can deliver at least
2A continuous current while the MIC2506 can deliver at
least 1A continuous current from each output. A slow
turn-on feature prevents high inrush current when
switching capacitive loads. The internal control circuitry
is powered from the same 3.0V to 7.5V. Within the
device’s input range, outputs can be forced higher than
the input voltage when disabled.
Multipurpose open-drain fault flag outputs indicate
overcurrent limiting, open-load detection (except
MIC2505-1 and -2 versions), thermal shutdown, or
undervoltage lockout for each channel.
Overcurrent limiting is internally fixed and requires no
external components.
Open-load detection is active when the switch is off.
When off, a normal load pulls the output pin low. If the
load is open, an optional, external, high-value resistor
pulls the output pin high, triggering the fault flag.
MIC2505-1 and -2 versions are tailored to Universal
Serial Bus (USB) applications and do not include
open-load detection.
Thermal shutdown turns off the output if the die
temperature exceeds approximately 135°C. If enabled,
the switch automatically restarts when the temperature
falls 10°C.
Undervoltage lockout (UVLO) shuts off the output if the
supply drops below 2.3V typical and re-enables the
output when the supply exceeds 2.5V typical.
 2016 Microchip Technology Inc.
DS20005579A-page 1
MIC2505/6
Package Types
MIC2505/-1/-2
8-Pin SOIC (M)
(Top View)
MIC2506
8-Pin SOIC (M)
(Top View)
MIC2506
MIC2505/-1/-2
CTL
1
8
OUT
CTL A
1
8
OUT A
FLG
2
7
IN
FLG A
2
7
IN
GND
3
6
OUT
FLG B
3
6
GND
GATE
4
5
IN
CTL B
4
5
OUT B
Typical Application Schematics
Single and Dual Switch/Circuit Breakers with Open-Load Detection and Fault Output
2
3
4
CTL
OUT
FLG
IN
GND
GATE
OUT
IN
Optional
Output Delay
Capacitor
DS20005579A-page 2
100Nȍ
8
7
6
5
Optional
Open Load
Detect Resistor
(MIC2505YN or
MIC2505YM
onl\
0.1μF
Pull-up
Resistors
NȍHDFK
A ON
A OFF
FAULT A
FAULT B
B ON
B OFF
MIC2506YM
1
2
3
4
CTL A OUT A
FLG A
FLG B
IN
GND
CTL B OUT B
Nȍ Nȍ
8
7
6
Optional
Open Load
DeteFWResistors
0.1μF
5
Load A
FAULT
MIC2505YM
1
Load
Pull-up
Resistor
Nȍ
ON
OFF
3.0V to 7.5V
Load B
3.0V to 7.5V
 2016 Microchip Technology Inc.
MIC2505/6
Functional Block Diagrams
MIC2505 Series Block Diagram
CTL
OSC.
THERMAL
SHUTDOWN
1.2V
REFERENCE
UVLO
CHARGE
PUMP
IN
CURRENT
LIMIT
GATE
CONTROL
Not Included in
MIC2505-1, -2
OPEN LOAD
DETECT
OUT
FLG
MIC2505/2505-1/2505-2
GND
GATE
MIC2506 Block Diagram
FLG A
OPEN LOAD
DETECT
OUT A
CTL A
CHARGE
PUMP
GATE
CONTROL
CURRENT
LIMIT
OSC.
THERMAL
SHUTDOWN
UVLO
1.2V
REFERENCE
CHARGE
PUMP
GATE
CONTROL
IN
CURRENT
LIMIT
CTL B
OPEN LOAD
DETECT
OUT B
FLG B
MIC2506
GND
 2016 Microchip Technology Inc.
DS20005579A-page 3
MIC2505/6
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage (VIN).................................................................................................................................................+8.0V
Fault Flag Voltage (VFLG) .........................................................................................................................................+7.5V
Fault Flag Current (IFLG) .........................................................................................................................................50 mA
Output Voltage (VOUT)................................................................................................................................................7.5V
Output Current (IOUT) .............................................................................................................................Internally Limited
Gate Voltage (VGATE) ........................................................................................................................................ VIN + 15V
Control Input (VCTL) ................................................................................................................................... –0.3V to +15V
Operating Ratings ‡
Supply Voltage (VIN).................................................................................................................................. +3.0V to +7.5V
† Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice: The device is not guaranteed to function outside its operating ratings.
DS20005579A-page 4
 2016 Microchip Technology Inc.
MIC2505/6
TABLE 1-1:
ELECTRICAL CHARACTERISTICS
Electrical Characteristics: VIN = +5V, GATE = open, TA = 25°C, bold values are valid for –40°C ≤ TA ≤ +85°C,
unless noted. (Note 1).
Parameters
Supply Current
Control Input Voltage
Control Input Current
Control Input Capacitance
Output MOSFET Resistance
Output Turn-On Delay
Output Turn-On Rise Time
Note 1:
2:
3:
Sym.
Min.
Typ.
Max.
Units
Conditions
IDD
—
0.75
5
µA
MIC2505-1, MIC2506, VCTL =
logic 0, OUT = open.
—
110
160
µA
MIC2505-1, MIC2506, VCTL =
logic 1, OUT = open.
—
110
160
µA
MIC2505-2, VCTL = logic 0,
OUT = open.
—
0.75
5
µA
MIC2505-2, VCTL = logic 1,
OUT = open.
—
2.1
2.4
V
VCTL = logic 0 to logic 1
transition
0.8
1.9
—
V
VCTL = logic 1 to logic 0
transition
—
0.01
1
µA
VCTL = logic 0
—
0.01
1
µA
VCTL = logic 1
CCTL
—
1
—
pF
—
RDS(ON)
—
30
50
mΩ
MIC2505 Series, VIN = 5V,
TA = 25°C.
—
—
60
mΩ
MIC2505 Series, VIN = 5V,
–40°C < TA < +85°C.
—
35
60
mΩ
MIC2505 Series, VIN = 3.3V,
TA = 25°C.
—
—
75
mΩ
MIC2505 Series, VIN = 3.3V,
–40°C < TA < +85°C.
—
75
125
mΩ
MIC2506, VIN = 5V,
TA = 25°C.
—
—
150
mΩ
MIC2506, VIN = 5V,
–40°C < TA < +85°C.
—
80
135
mΩ
MIC2506, VIN = 3.3V,
TA = 25°C.
—
—
165
mΩ
MIC2506, VIN = 3.3V,
–40°C < TA < +85°C.
200
850
2000
µs
MIC2505 Series, RL = 10Ω,
CGATE = 0.
100
700
2000
µs
MIC2506, RL = 10Ω each
output.
500
3000
7500
µs
MIC2505 Series, RL = 10Ω,
CGATE = 0.
200
2000
6000
µs
MIC2506, RL = 10Ω each
output.
VCTL
ICTL
tON
tR
Devices are ESD protected; however, handling precautions recommended. All limits guaranteed by testing
or statistical analysis.
MIC2505-1 and -2 versions have no open load detect feature.
Open load threshold is the output voltage (VOUT) where FLG becomes active (low) when CTL is low. OUT
is pulled high by a 100 kΩ external resistor to VIN.
 2016 Microchip Technology Inc.
DS20005579A-page 5
MIC2505/6
TABLE 1-1:
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: VIN = +5V, GATE = open, TA = 25°C, bold values are valid for –40°C ≤ TA ≤ +85°C,
unless noted. (Note 1).
Parameters
Output Turn-Off Delay
Output Turn-Off Fall Time
Sym.
Min.
Typ.
Max.
Units
Conditions
tOFF
—
0.7
20
µs
MIC2505 Series, RL = 10Ω,
CGATE = 0.
—
0.8
20
µs
MIC2506, RL = 10Ω each
output.
—
1.5
20
µs
MIC2505 Series, RL = 10Ω,
CGATE = 0.
—
0.7
20
µs
MIC2506, RL = 10Ω each
output.
tF
Output Leakage Current
ILKG
—
—
10
µA
—
Current Limit Threshold
ILIM
2
4
—
A
MIC2505 Series
1
2
3
A
MIC2506
VOPENL_TH
0.5
1
1.5
V
VCTL = logic low, Note 3
Overtemperature Shutdown
Threshold
TSD
—
135
—
°C
TJ increasing
—
125
—
°C
TJ decreasing
Error Flag Output Resistance
RFLG
—
10
25
Ω
VIN = 5V, IL = 10 mA
—
15
40
Ω
VIN = 3.3V, IL = 10 mA
Open Load Threshold (Note 2)
Error Flag Off Current
IFLG_OFF
—
0.01
1
µA
VFLAG = 5V
UVLO Threshold
VUVLO_TH
2.2
2.5
3.0
V
VIN increasing
UVLO Hysteresis
VUVLO_TH_
—
215
—
mV
MIC2505
HYST
—
235
—
mV
MIC2506
Note 1:
2:
3:
Devices are ESD protected; however, handling precautions recommended. All limits guaranteed by testing
or statistical analysis.
MIC2505-1 and -2 versions have no open load detect feature.
Open load threshold is the output voltage (VOUT) where FLG becomes active (low) when CTL is low. OUT
is pulled high by a 100 kΩ external resistor to VIN.
DS20005579A-page 6
 2016 Microchip Technology Inc.
MIC2505/6
TEMPERATURE SPECIFICATIONS
Parameters
Sym.
Min.
Typ.
Max.
Units
Conditions
Ambient Operating Temperature
TA
–40
—
+85
°C
Storage Temperature Range
TS
–65
—
+150
°C
—
Lead Temperature
—
—
—
+260
°C
Soldering, 5s
JA
—
160
—
°C/W
Temperature Ranges
—
Package Thermal Resistances
Thermal Resistance, SOIC
 2016 Microchip Technology Inc.
—
DS20005579A-page 7
MIC2505/6
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
CONTROL (V)
Note:
TYPICAL PERFORMANCE CURVES
10
CONTROL (V)
2.0
5
0
10
5
0
6
-5
OUTPUT (V)
OUTPUT (V)
-5
6
4
2
RL = 5Ω
(IL = 1A)
0
-2
-2
0 2 4
TIME (ms)
FIGURE 2-1:
Characteristics.
6
-2
0
2
TIME (μs)
MIC2505 Turn-On, Turn-Off
FIGURE 2-4:
Characteristics.
THRESHOLD VOLTAGE (V)
OUTPUT RESISTANCE (mΩ)
0
RL = 5Ω
(IL = 1A)
0 2 4
TIME (ms)
-1
6
0
1
TIME (μs)
2
MIC2506 Turn-On, Turn-Off
3.0
MIC2506
80
60
MIC2505
40
20
2
FIGURE 2-2:
Supply Voltage.
3
4
5
6
7
SUPPLY VOLTAGE (V)
Output On Resistance vs.
2.5
VIN FALLING
2.0
FIGURE 2-5:
Temperature.
60
MIC2505
40
20
ERROR FLAG VOLTAGE (mV)
80
FLG = ACTIVE
300
VDD = 3.3V
200
100
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
DS20005579A-page 8
UVLO Threshold Voltage vs.
400
MIC2506
FIGURE 2-3:
Temperature.
VIN RISING
1.5
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
8
100
ON RESISTANCE (mΩ)
2
-2
-2
4
100
0
4
Output On Resistance vs.
VDD = 5V
0
0.1
1
10
100
ERROR FLAG CURRENT (mA)
FIGURE 2-6:
Flag Current.
Error Flag Voltage vs. Error
 2016 Microchip Technology Inc.
200
180
SUPPLY CURRENT (μA)
SUPPLY CURRENT (μA)
MIC2505/6
160
140
120
100
80
60
40
20
0
2
FIGURE 2-7:
Supply Voltage.
3
4
5
6
7
SUPPLY VOLTAGE (V)
200
180
160
140
120
100
FIGURE 2-10:
Temperature.
SUPPLY CURRENT (μA)
SUPPLY CURRENT (μA)
1.5
1.0
0.5
2
FIGURE 2-8:
Supply Voltage.
3
4
5
6
7
SUPPLY VOLTAGE (V)
Off-State Supply Current vs.
1.0
0.5
FIGURE 2-11:
Temperature.
Off-State Supply Current vs.
2.5
2.0
THRESHOLD VOLTAGE (V)
THRESHOLD VOLTAGE (V)
1.5
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
8
2.5
VCTL RISING
1.5
1.0
On-State Supply Current vs.
2.0
2.0
0
40
20
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
8
On-State Supply Current vs.
80
60
VCTL FALLING
2
FIGURE 2-9:
Supply Voltage.
3
4
SUPPLY VOLTAGE (V)
5
Control Threshold vs.
 2016 Microchip Technology Inc.
2.0
1.5
VCTL RISING
VCTL FALLING
1
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
FIGURE 2-12:
Temperature.
Control Threshold vs.
DS20005579A-page 9
MIC2505/6
TURN-ON DELAY (ms)
1000
800
600
400
200
0
0
50
100 150 200
CAPACITANCE (nF)
250
FIGURE 2-13:
MIC2505 Turn-On Delay
with External Gate Capacitance.
3.0
TEST CIRCUITS
+5V
10kΩ
VFLG
+5V
MIC2505/-1/-2
10kΩ
10kΩ
MIC2506YM
CTL
OUT
FLG
IN
VFLG A
FLG A
IN
GND
OUT
VFLG B
FLG B
GND
GATE
FIGURE 3-1:
DS20005579A-page 10
IN
A ON
A OFF
10Ω
CTL A OUT A
1μF
1μF
10Ω
MIC2505 Series Test Circuit.
B ON
B OFF
FIGURE 3-2:
10Ω
CTL B OUT B
MIC2506 Test Circuit.
 2016 Microchip Technology Inc.
MIC2505/6
4.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 4-1.
TABLE 4-1:
PIN FUNCTION TABLE
Pin Number
MIC2505 Series
Pin Number
MIC2506
1
1, 4
CTL (A/B) Control (Input): TTL-compatible control input. MIC2505,
MIC2505-1, and MIC2506 are active-high. MIC2505-2 is active-low.
2
2, 3
FLG (A/B) Fault Flag (Output): Active-low, open-drain output. If CTL is low,
indicates open load. If CTL is high, indicates current limit, thermal
shutdown, or UVLO.
MIC2505-1 and -2 do not support open-load detect.
3
6
GND
Ground: Return.
4
—
GATE
Output MOSFET Gate: Open for fastest rise time. Connect
capacitor to ground to slow rise time. (See Figure 2-13)
5, 7
7
IN
6, 8
8, 5
 2016 Microchip Technology Inc.
Pin Name
Description
Supply Input: Output MOSFET drain. Also supplies IC’s internal
circuitry. Connect to supply.
MIC2505 series only: Pins 5 and 7 must be externally connected
together.
OUT (A/B) Switch Output: Output MOSFET source. Typically connect to
switched side of load. Output voltage can be pulled above input
voltage in off mode.
MIC2505 series only: Pins 6 and 8 must be externally connected
together.
DS20005579A-page 11
MIC2505/6
5.0
FUNCTIONAL DESCRIPTION
The MIC2505-series and MIC2506 are high-side
N-Channel switches. The MIC2505, MIC2505-1, and
MIC2506 have active-high enable inputs. The
MIC2505-2 has an active-low input. Fault conditions
inhibit output transistor turn-on or turn-off when
enabled.
5.1
Control Input
CTL (control input) activates the oscillator, thermal
shutdown, UVLO, 1.2V reference, and gate control
circuits. If there are no fault conditions, the output
MOSFET turns on when enabled.
5.2
Reference
A 1.2V bandgap reference supplies a regulated voltage
to the thermal shutdown and undervoltage lockout
circuits. The reference is only active when CTL is
enabled.
5.3
Oscillator/Charge Pump
The oscillator produces an 80 kHz square wave output
that drives the charge pump. The oscillator is enabled
when CTL is active.
The charge pump is a voltage quintupler (5x). The
charge pump capacitors are self contained.
5.4
method for optimum turn-on threshold has the source
connected to the body. This would allow a large current
to flow when VSOURCE > VDRAIN + 0.6V.
5.5.1
MIC2505 SERIES ONLY
Duplicate IN and OUT leads are not internally
connected. Connect both IN pins to the supply.
Connect both OUT leads to the load.
5.6
Thermal Shutdown
Thermal shutdown shuts off the output MOSFET and
signals the fault flag if the die temperature exceeds
135°C. 10°C of hysteresis prevents the switch from
turning on until the die temperature drops to 125°C.
Overtemperature detection functions only when the
control input is enabled (output MOSFET is on). Both
MIC2506 outputs are shut off during overtemperature,
and both flags will go low.
5.7
Undervoltage Lockout
UVLO (undervoltage lockout) prevents the output
MOSFET from turning on until VIN (input voltage)
exceeds 2.5V typical. After the switch turns on, if VIN
drops below 2.3V typical, UVLO shuts off the output
MOSFET and turns the fault flag on (active-low) until
VIN drops below 1.5V.
Undervoltage detection functions only when the control
input is enabled (output MOSFET is on).
Gate Control
The gate control circuit charges the output MOSFET
gate from the charge pump output or discharges the
MOSFET gate to ground as determined by CTL,
thermal shutdown, or undervoltage lockout (UVLO).
5.8
Overcurrent Limit
The overcurrent limit is preset internally. The preset
level prevents damage to the output MOSFET, but
allows a minimum current of 2A through the output
MOSFET of the MIC2505-series and 1A for each
output MOSFET of the MIC2506. Output current is
monitored by sensing the voltage drop across the
output MOSFET drain metal resistance.
An optional, external capacitor may be connected to
the MIC2505 GATE to lengthen the rise time. This
slows the turn on of the MOSFET output switch. (See
Figure 2-13) Because this pin connects directly to the
MOSFET gate, use ESD precautions when contacting
components connected to this pin. Leakage resistance
may increase turn on times.
Overcurrent detection functions only when the control
input is enabled (output MOSFET is on) and VIN is
above the UVLO threshold.
5.5
5.9
Input and Output
IN (input) is the supply connection to the logic circuitry
and the drain of the output MOSFET. OUT (output) is
the source of the output MOSFET. In a typical circuit,
current flows through the switch from IN to OUT toward
the load.
The output MOSFET and driver circuitry are also
designed to allow the MOSFET source to be externally
forced to a higher voltage than the drain (VOUT > VIN)
when the output switch is off and VIN > UVLO minimum.
In this situation, the MIC2505/6 avoids undesirable
drain to body diode reverse current flow by grounding
the body when the switch is off. The conventional
DS20005579A-page 12
Open-Load Detection
Open-load detection is available only on the MIC2505
and MIC2506. The open-load detection feature is not
included in the MIC2505-1 or -2 versions.
Open-load detection indicates the absence of an output
load by activating the fault flag. Open-load detection is
optional and is enabled by connecting a high-value
pull-up resistor between IN and OUT. If there is no load,
the circuit detects a high OUT (output) voltage (typically
≥1V) and signals the fault flag. Under normal
conditions, the low resistance of a typical load pulls
OUT low. Open-load detection functions only when the
control input is low (output MOSFET is off).
 2016 Microchip Technology Inc.
MIC2505/6
5.10
Fault Flag
FLG is an N-channel, open-drain MOSFET output. The
fault flag is active (low) for one or more of the following
conditions: open load (except MIC2505-1 and -2
versions), undervoltage, current limit, or thermal
shutdown. The flag output MOSFET is capable of
sinking a 10 mA load to typically 100 mV above
ground.
 2016 Microchip Technology Inc.
DS20005579A-page 13
MIC2505/6
6.0
APPLICATION INFORMATION
6.1
Supply Filtering
A 0.1 μF to 1 μF bypass capacitor from IN to GND,
located at the device is strongly recommended to
control supply transients. Without a bypass capacitor,
an output short may cause sufficient ringing on the
input (from supply lead inductance) to destroy the
internal control circuitry.
Input transients must not exceed the absolute
maximum supply voltage (VIN(MAX) = 7.5V) even for a
short duration.
6.4
Power Bus Switch
The MIC2505/6 family features a MOSFET reverse
current flow prevention circuit. This prevents current
from flowing backwards (from OUT to IN) when CTL is
disabled as long as VIN is above UVLO minimum. In
Figure 6-2, when U1 is on and U2 is off, this feature
prevents current flow from the load (5V) backward
through U2 to the 3.3V supply. If a discrete MOSFET
and driver were used, the MOSFET’s internal body
diode would short the 5V load to the 3.3V supply.
FLG will be active (low) on any switch that is off
whenever the load voltage is greater than the open
load threshold (approximately 1V) except for
MIC2505-1 and MIC2505-2.
3.0V to 7.5V
MIC2505YM
ON
OFF
1
2
3
4
CTL
OUT
FLG
IN
GND
GATE
OUT
IN
1N4148
(optional)
6
0.1μF to 1μF
1
2
5
3
6.2
Control Input
CTL must be driven logic high or logic low, or be pulled
high or low for a clearly defined input. Floating the input
may cause unpredictable operation. Add a diode clamp
if negative spikes may occur. See Figure 6-2.
6.3
CTL
OUT
IN
FLG
GND
OUT
GATE
IN
Open-Load Detection
Refer to the Typical Application Schematics.
Open-load detection is available only on the MIC2505
and MIC2506. For USB power distribution applications,
the open-load detection feature is not included in the
MIC2505-1 or -2 versions.
The optional open-load detection resistor supplies a
small pull-up current to the load when the output switch
is off. A 100 kΩ resistor will draw 50 μA from a 5V
supply. Normally, the load dominates, pulling OUT low.
If the load is absent, the optional resistor pulls OUT
high, activating the fault flag if CTL is off.
1
7
2
6
3
5
4
0.1μF
When a load is switched off with CTL, capacitance on
the output may cause the open-load function to pull the
flag low until the capacitor is discharged below
approximately 2.4V.
Omit the pull-up resistor when open load detection is
not required and for minimum off-state supply current.
CTL
OUT
FLG
IN
GND
OUT
GATE
IN
8
7
6
5
0.1μF
Load
FIGURE 6-2:
5V/3.3V Switch Concept.
This circuit’s function would otherwise require a dual
driver, two MOSFETs, plus two diodes (or a dual driver
plus four MOSFETs).
6.5
Hot Plug-In Applications
(Soft-Start)
The MIC2505/6 family can be used to protect the
socket-side and card-side of a supply circuit from
transients caused when a capacitive load is connected
to an active supply.
The switch presents a high impedance when off, and
slowly becomes a low impedance as it turns on. This
reduces the inrush current and related voltage drop
that result from charging a capacitive load.
3.3V
1
3
4
GND
Socket
FIGURE 6-3:
Power Control
Circuitry
MIC2505YM
2
DS20005579A-page 14
U2
MIC2505YM
8
Supply Bypassing.
The bypass capacitor may be omitted only if board
design precautions are followed, such as using
extremely short supply leads or power and ground
planes.
+3.3V
U1
MIC2505YM
7
4
FIGURE 6-1:
+5V
Logic-High = 5V Output
Logic-Low = 3.3V Output
8
CTL
OUT
FLG
IN
GND
OUT
GATE
IN
8
7
Capacitive
Load
6
5
0.1μF
Card
Hot Pulg-In Concept.
 2016 Microchip Technology Inc.
MIC2505/6
A gate capacitor may be added to the MIC2505 to slow
the turn on time even more, reducing the inrush
current. See Figure 2-13. The UVLO feature ensures
that each time the card is removed and VIN = 0 that the
gate of the output switch is discharged to zero volts. A
controlled turn-on is executed each time a board is
plugged in, even with multiple insertions.
6.6
USB Application
Figure 6-4 depicts a low cost and robust
implementation of a four-port, self-powered USB hub
circuit employing ganged overcurrent protection.
(+)
4.45V to 5.25V
3.5A max.
(–)
VBUS
D+
Ferrite
Bead
IN
D–
GND
100k
33μF MIC5203-3.3
MIC5207-3.3
LDO Regulator
D+
3.3V USB Controller
V+
OUT
GND
VBUS
1.0
μF
ON/OFF
OVERCURRENT
4.7
μF
MIC2505-2/-1
EN
IN
GND
OUT
GND
D–
GND
Downstream
USB
Port 1
500mA max.
VBUS
IN
D+
0.1μF
D+
D–
33μF
OUT
FLG
GATE
0.01μF
0.01μF
33μF
D–
GND
Bold lines indicate
0.1" wide, 1-oz. copper
high-current traces.
Downstream
USB
Port 2
500mA max.
VBUS
D+
0.01μF
33μF
D–
GND
Downstream
USB
Port 3
500mA max.
VBUS
D+
0.01μF
33μF
D–
GND
Downstream
USB
Port 4
500mA max.
Data
FIGURE 6-4:
Ganged-Switch Self-Powered Hub.
 2016 Microchip Technology Inc.
DS20005579A-page 15
MIC2505/6
7.0
PACKAGING INFORMATION
7.1
Package Marking Information
8-Pin SOIC*
for MIC2505
Example
MIC
XXXXXX
YYWW
MIC
2505YM
1426
for MIC2505-1/-2
XXXX
-XXX
YYWW
for MIC2506
MIC
XXXXXX
YYWW
Legend: XX...X
Y
YY
WW
NNN
e3
*
Example
2505
-1YM
1532
Example
MIC
2506YM
1609
Product code or customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC® designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.
●, ▲, ▼ Pin one index is identified by a dot, delta up, or delta down (triangle
mark).
Note:
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information. Package may or may not include
the corporate logo.
Underbar (_) symbol may not be to scale.
DS20005579A-page 16
 2016 Microchip Technology Inc.
MIC2505/6
8-Lead SOIC Package Outline and Recommended Land Pattern
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
 2016 Microchip Technology Inc.
DS20005579A-page 17
MIC2505/6
NOTES:
DS20005579A-page 18
 2016 Microchip Technology Inc.
MIC2505/6
APPENDIX A:
REVISION HISTORY
Revision A (August 2016)
• Converted Micrel document MIC2505/6 to Microchip data sheet DS20005579A.
• Minor text changes throughout.
 2016 Microchip Technology Inc.
DS20005579A-page 19
MIC2505/6
NOTES:
DS20005579A-page 20
 2016 Microchip Technology Inc.
MIC2505/6
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office.
–
PART NO.
X
X
X
–
Examples:
X
a) MIC2505YM:
Single 2A High-Side Switch, ActiveHigh with Open-Load Detect,
–40°C to +85°C Temp. Range,
8-Pin SOIC, 95/Tube
b) MIC2505YM-TR:
Single 2A High-Side Switch, ActiveHigh with Open-Load Detect,
–40°C to +85°C Temp. Range,
8-Pin SOIC, 2,500/Reel
c) MIC2505-1YM:
Single 2A High-Side Switch, ActiveHigh without Open-Load Detect,
–40°C to +85°C Temp. Range,
8-Pin SOIC, 95/Tube
d) MIC2505-1YM-TR:
Single 2A High-Side Switch, ActiveHigh without Open-Load Detect,
–40°C to +85°C Temp. Range,
8-Pin SOIC, 2,500/Reel
e) MIC2505-2YM:
Single 2A High-Side Switch, ActiveLow without Open-Load Detect,
–40°C to +85°C Temp. Range,
8-Pin SOIC, 95/Tube
f)
Single 2A High-Side Switch, ActiveLow without Open-Load Detect,
–40°C to +85°C Temp. Range,
8-Pin SOIC, 2,500/Reel
Device
Control/ Temperature Package Media Type
Enable and
Open-Load Detect
Device:
MIC2505:
MIC2506:
Control/Enable
and Open-Load
Detect:
Blank
1
2
Temperature:
Y
=
–40°C to +85°C
Package:
M
=
8-Pin SOIC
Media Type:
TR =
none =
2,500/Reel
95/Tube
Note 1:
=
=
=
Single 2A High-Side Switch
Dual 1A High-Side Switch, (Note 1)
Active-High with Open-Load Detect
Active-High without Open-Load Detect
Active-Low without Open-Load Detect
MIC2506 is only available in an Active-High with Open-Load
Detect configuration.
 2016 Microchip Technology Inc.
MIC2505-2YM-TR:
g) MIC2506YM:
Dual 1A High-Side Switch, ActiveHigh with Open-Load Detect,
–40°C to +85°C Temp. Range,
8-Pin SOIC, 95/Tube
h) MIC2506YM-TR:
Dual 1A High-Side Switch, ActiveHigh with Open-Load Detect,
–40°C to +85°C Temp. Range,
8-Pin SOIC, 2,500/Reel
DS20005579A-page 21
MIC2505/6
NOTES:
DS20005579A-page 22
 2016 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights unless otherwise stated.
Trademarks
The Microchip name and logo, the Microchip logo, AnyRate,
dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KeeLoq,
KeeLoq logo, Kleer, LANCheck, LINK MD, MediaLB, MOST,
MOST logo, MPLAB, OptoLyzer, PIC, PICSTART, PIC32 logo,
RightTouch, SpyNIC, SST, SST Logo, SuperFlash and UNI/O
are registered trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
ClockWorks, The Embedded Control Solutions Company,
ETHERSYNCH, Hyper Speed Control, HyperLight Load,
IntelliMOS, mTouch, Precision Edge, and QUIET-WIRE are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut,
BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM,
dsPICDEM.net, Dynamic Average Matching, DAM, ECAN,
EtherGREEN, In-Circuit Serial Programming, ICSP, Inter-Chip
Connectivity, JitterBlocker, KleerNet, KleerNet logo, MiWi,
motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB,
MPLINK, MultiTRAK, NetDetach, Omniscient Code
Generation, PICDEM, PICDEM.net, PICkit, PICtail,
PureSilicon, RightTouch logo, REAL ICE, Ripple Blocker,
Serial Quad I/O, SQI, SuperSwitcher, SuperSwitcher II, Total
Endurance, TSHARC, USBCheck, VariSense, ViewSpan,
WiperLock, Wireless DNA, and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
 2016 Microchip Technology Inc.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
GestIC is a registered trademarks of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip
Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2016, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
ISBN: 978-1-5224-0854-3
DS20005579A-page 23
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DS20005579A-page 24
 2016 Microchip Technology Inc.