MICREL MIC2505_04

MIC2505/2506
Micrel
MIC2505/2506
Single 2A / Dual 1A / High-Side Switches
General Description
Features
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.
• Low MOSFET on resistance to 2.7V
30mΩ typical at 5V (MIC2505-series)
35mΩ typical at 3.3V (MIC2505-series)
75mΩ typical at 5V (each MIC2506 output)
80mΩ typical at 3.3V (each MIC2506 output)
• 2.7V to 7.5V input
• 110µA typical on-state supply current
• 1µA 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
(MIC2505BN/M and MIC2506BN/M only)
• Open-drain fault flag
• 5ms (slow) turn-on and fast turnoff
• Logic-level control/enable input
The MIC2505/6 family controls voltages ranging from 2.7V 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 2.7V 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.
Applications
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.
USB Power Distribution
3.3V and 5V power management
PC Card card inrush limiting switch
Hot plug-in power supplies
Battery-charger circuits
Undervoltage lockout (UVLO) shuts off the output if the
supply drops below 2.3V typical and reenables the output
when the supply exceeds 2.5V typical.
Typical Applications
1
ON
OFF
FAULT
2
3
4
CTL
OUT
FLG
IN
GND
GATE
OUT
IN
Optional
Output Delay
Capacitor
100k
8
7
6
5
Optional
Open Load
Detect Resistor
(MIC2505BN or
MIC2505BM
only)
0.1µF
Pull-up
Resistors
(100k each)
A ON
A OFF
FAULT A
FAULT B
B ON
B OFF
MIC2506BM
1
2
3
4
CTL A OUT A
FLG A
FLG B
IN
GND
CTL B OUT B
100k 100k
8
7
6
Optional
Open Load
Detect Resistors
0.1µF
5
Load A
MIC2505BM
Load
Pull-up
Resistor
(100k)
2.7V to 7.5V
Load B
2.7V to 7.5V
Single and Dual Switch/Circuit Breakers with Open-Load Detection and Fault Output
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
April 2004
1
M9999-042704
MIC2505/2506
Micrel
Ordering Information
Part Number
Control/Enable
Open-Load Detect
Temperature Range
Package
Lead Finish
MIC2505BM
Active-High
Yes
–40°C to +85°C
8-pin SOIC
Standard
MIC2505YM
Active-High
Yes
–40°C to +85°C
8-pin SOIC
Pb-Free
MIC2505BN
Active-High
Yes
–40°C to +85°C
8-pin DIP
Standard
MIC2505-1BM
Active-High
No
–40°C to +85°C
8-pin SOIC
Standard
MIC2505-1YM
Active-High
No
–40°C to +85°C
8-pin SOIC
Pb-Free
MIC2505-1BN
Active-High
No
–40°C to +85°C
8-pin DIP
Standard
MIC2505-2BM
Active-Low
No
–40°C to +85°C
8-pin SOIC
Standard
MIC2505-2YM
Active-Low
No
–40°C to +85°C
8-pin SOIC
Pb-Free
MIC2505-2BN
Active-Low
No
–40°C to +85°C
8-pin DIP
Standard
MIC2506BM
Active-High
Yes
–40°C to +85°C
8-pin SOIC
Standard
MIC2506YM
Active-High
Yes
–40°C to +85°C
8-pin SOIC
Pb-Free
MIC2506BN
Active-High
Yes
–40°C to +85°C
8-pin DIP
Standard
Single-Switch
Dual Switch
Pin Configuration
MIC2505/-1/-2
MIC2506
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
MIC2506
MIC2505/-1/-2
(CTL A) 1
(FLG A) 2
LOGIC,
CHARGE
PUMP
(GATE A) 4
M9999-042704
6, 8 (OUT)
(CTL A) 1
(FLG A) 2
LOGIC,
CHARGE
PUMP
5, 7 (IN)
(FLG B) 3
(CTL B) 4
LOGIC,
CHARGE
PUMP
8 (OUT A)
7 (IN)
5 (OUT B)
3 (GND)
6 (GND)
8-Pin SOIC (M)
8-Pin DIP (N)
8-Pin SOIC (M)
8-Pin DIP (N)
2
April 2004
MIC2505/2506
Micrel
Pin Description
Pin Number
Pin Number
MIC2505 series
MIC2506
Pin Name
Pin Function
1
1/4
CTL (A/B)
Control (Input): TTL compatible control input. High input typically > 1.8V.
Low input typically < 1.6V. 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 MIC2505 Turn-On Delay graph)
5, 7
7
IN
6, 8
8/5
OUT (A/B)
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.
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.
Absolute Maximum Ratings
Operating Ratings
Supply Voltage (VIN) .................................................... 8.0V
Fault Flag Voltage (VFLG) ............................................. 7.5V
Fault Flag Current (IFLG) ............................................ 50mA
Output Voltage (VOUT) ................................................. 7.5V
Output Current (IOUT) ............................... Internally Limited
Gate Voltage (VGATE) ......................................... VIN + 15V
Control Input (VCTL) ....................................... –0.3V to 15V
Storage Temperature (TA) ....................... –65°C to +150°C
Lead Temperature (Soldering 5 sec.) ....................... 260°C
Supply Voltage (VIN) ................................... +2.7V to +7.5V
Ambient Operating Temperature (TA) ........ –40°C to +85°C
Thermal Resistance
SOIC (θJA) ......................................................... 160°C/W
DIP (θJA) ............................................................ 105°C/W
April 2004
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M9999-042704
MIC2505/2506
Micrel
Electrical Characteristics
VIN = +5V; GATE = open; TA = 25°C, bold indicates –40°C ≤ TA ≤ +85°C; unless noted
Parameter
Condition
Supply Current
MIC2505-1
MIC2506
MIC2505-2
Min
Typ
Max
Units
VCTL = logic 0, OUT = open
VCTL = logic 1, OUT = open
0.75
110
5
240
µA
µA
VCTL = logic 0, OUT = open
VCTL = logic 1, OUT = open
110
0.75
240
5
µA
µA
2.1
1.9
2.4
V
V
0.01
0.01
1
1
µA
µA
Control Input Voltage
VCTL = logic 0 → logic 1 transition
VCTL = logic 1 → logic 0 transition
Control Input Current
VCTL = logic 0
VCTL = logic 1
0.8
Control Input Capacitance
Output MOSFET Resistance
1
MIC2505 series
MIC2506
Output Turn-On Delay
Output Turn-On Rise Time
Output Turnoff Delay
Output Turnoff Fall Time
VIN = 5V, TA = 25°C
VIN = 5V, –40°C < TA < +85°C
VIN = 3.3V, TA = 25°C
VIN = 3.3V, –40°C < TA < +85°C
30
35
VIN = 5V, TA = 25°C
VIN = 5V, –40°C < TA < +85°C
VIN = 3.3V, TA = 25°C
VIN = 3.3V, –40°C < TA < +85°C
75
80
50
60
60
75
mΩ
mΩ
mΩ
mΩ
125
150
135
165
mΩ
mΩ
mΩ
mΩ
MIC2505 series
RL = 10Ω, CGATE = 0
200
850
2000
µs
MIC2506
RL = 10Ω each output
100
700
2000
µs
MIC2505 series
RL = 10Ω, CGATE = 0
500
3000
7500
µs
MIC2506
RL = 10Ω each output
200
2000
6000
µs
MIC2505 series
RL = 10Ω, CGATE = 0
0.7
20
µs
MIC2506
RL = 10Ω each output
0.8
20
µs
MIC2505 series
RL = 10Ω, CGATE = 0
1.5
20
µs
MIC2506
RL = 10Ω each output
0.7
20
µs
10
µA
Output Leakage Current
Current Limit Threshold
pF
MIC2505 series
2
4
MIC2506
1
2
3
A
0.5
1
1.5
V
A
Open Load Threshold, Note 1
VCTL = logic low, Note 2
Overtemperature Shutdown
Threshold
TJ increasing
TJ decreasing
135
125
Error Flag Output Resistance
VIN = 5V, IL = 10mA
VIN = 3.3V, IL = 10mA
10
15
25
40
Ω
Ω
Error Flag Off Current
VFLAG = 5V
0.01
1
µA
UVLO Threshold
VIN = increasing
VIN = decreasing
2.5
2.3
2.7
2.5
V
V
2.2
2.0
°C
°C
General Note: Devices are ESD protected, however, handling precautions recommended.
General Note: All limits guaranteed by testing or statistical analysis.
Note 1:
MIC2505-1 and -2 versions have no open load detect feature.
Note 2:
Open-load threshold is the output voltage (VOUT) where FLG becomes active (low) when CTL is low. OUT is pulled high by a 100k external
resistor to VIN.
M9999-042704
4
April 2004
MIC2505/2506
Micrel
Test Circuits
+5V
10kΩ
VFLG
+5V
MIC2505/-1/-2
10kΩ
MIC2506BM
10kΩ
A ON
A OFF
10Ω
CTL A OUT A
CTL
OUT
FLG
IN
VFLG A
FLG A
IN
GND
OUT
VFLG B
FLG B
GND
1µF
GATE
IN
10Ω
B ON
B OFF
10Ω
1µF
CTL B OUT B
Typical Characteristics Note 2
10
4
2
RL = 5Ω
(IL = 1A)
0
-2
-2
0 2 4
TIME (ms)
-2
6
0
2
TIME (µs)
THRESHOLD VOLTAGE (V)
CONTROL (V)
5
0
6
-5
4
RL = 5Ω
(IL = 1A)
-2
-2
0 2 4
TIME (ms)
-1
6
0
1
TIME (µs)
20
2
MIC2505
40
20
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
8
Error Flag Voltage
vs. Error Flag Current
400
VIN RISING
2.5
VIN FALLING
2.0
On-State Supply Current
vs. Supply Voltage
FLG = ACTIVE
300
VDD = 3.3V
200
100
Control Threshold
vs. Supply Voltage
Off-State Supply Current
vs. Supply Voltage
120
100
80
60
40
20
3
4
5
6
7
SUPPLY VOLTAGE (V)
8
2.5
THRESHOLD VOLTAGE (V)
160
140
2
VDD = 5V
0
0.1
1
10
100
ERROR FLAG CURRENT (mA)
2.0
SUPPLY CURRENT (µA)
SUPPLY CURRENT (µA)
60
1.5
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
2
200
180
April 2004
3
4
5
6
7
SUPPLY VOLTAGE (V)
3.0
10
0
MIC2505
40
80
UVLO Threshold Voltage
vs. Temperature
MIC2506 Turn-On, Turnoff
Characteristics
2
60
0
4
MIC2506
80
ERROR FLAG VOLTAGE (mV)
OUTPUT (V)
-5
6
MIC2506
ON RESISTANCE (mΩ)
0
OUTPUT (V)
100
100
5
0
Output On Resistance
vs. Temperature
Output On Resistance
vs. Supply Voltage
OUTPUT RESISTANCE (mΩ)
CONTROL (V)
MIC2505 Turn-On, Turnoff
Characteristics
1.5
1.0
0.5
0
2
3
4
5
6
7
SUPPLY VOLTAGE (V)
5
8
2.0
VCTL RISING
1.5
1.0
VCTL FALLING
2
3
4
SUPPLY VOLTAGE (V)
5
M9999-042704
MIC2505/2506
Micrel
160
140
120
100
80
60
40
20
2.0
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
2.5
THRESHOLD VOLTAGE (V)
200
180
Control Threshold
vs. Temperature
Off-State Supply Current
vs. Temperature
SUPPLY CURRENT (µA)
SUPPLY CURRENT (µA)
On-State Supply Current
vs. Temperature
1.5
1.0
0.5
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
2.0
1.5
VCTL RISING
VCTL FALLING
1
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
MIC2505 Turn-On Delay
with External Gate Capacitance
TURN-ON DELAY (ms)
1000
800
600
400
200
0
M9999-042704
0
50
100 150 200
CAPACITANCE (nF)
6
250
April 2004
MIC2505/2506
Micrel
Block Diagrams
CTL
THERMAL
SHUTDOWN
OSC.
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
MIC2505-Series Block Diagram
FLG A
OPEN LOAD
DETECT
OUT A
CTL A
CHARGE
PUMP
GATE
CONTROL
CURRENT
LIMIT
OSC.
THERMAL
SHUTDOWN
1.2V
REFERENCE
UVLO
CHARGE
PUMP
GATE
CONTROL
IN
CURRENT
LIMIT
CTL B
OPEN LOAD
DETECT
OUT B
FLG B
MIC2506
GND
MIC2506 Block Diagram
April 2004
7
M9999-042704
MIC2505/2506
Micrel
Duplicate IN and OUT leads are not internally connected.
Connect both IN pins to the supply. Connect both OUT leads
to the load.
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
turnoff when enabled.
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.
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.
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.
Reference
Undervoltage Lockout
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.
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).
Oscillator/Charge Pump
The oscillator produces an 80kHz square wave output which
drives the charge pump. The oscillator is enabled when CTL
is active.
The charge pump is a voltage quintupler (5×). The charge
pump capacitors are self contained.
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.
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
UVLO (undervoltage lockout).
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 “MIC2505 Turn-On
Delay” graph.) Since this pin connects directly to the MOSFET
gate, use ESD precautions when contacting components
connected to this pin. Leakage resistance may increase turnon times.
Input and Output
Overcurrent detection functions only when the control input is
enabled (output MOSFET is on) and VIN is above the UVLO
threshold.
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).
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 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.)
Fault Flag
FLG is an N-channel, open-drain MOSFET output. The faultflag 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 10mA load to typically
100mV above ground.
MIC2505 Series Only
M9999-042704
8
April 2004
MIC2505/2506
Micrel
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.)
Applications Information
Supply Filtering
A 0.1µF to 1µF 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.
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.
2.7V to 7.5V
1N4148
(optional)
MIC2505BM
ON
OFF
1
CTL
OUT
FLG
IN
2
8
GND
OUT
7
4
3
GATE
IN
CTL
OUT
FLG
IN
GND
GATE
OUT
IN
U2
MIC2505BM
8
1
7
2
6
3
5
4
0.1µF
CTL
OUT
FLG
IN
GND
OUT
GATE
IN
8
7
6
5
0.1µF
0.1µF to 1µF
5
Load
4
6
+3.3V
U1
MIC2505BM
1
3
2
+5V
Logic-High = 5V Output
Logic-Low = 3.3V Output
Input transients must not exceed the absolute maximum
supply voltage (VIN max = 7.5V) even for a short duration.
Figure 1. Supply Bypassing
Figure 2. 5V/3.3V Switch Concept
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.
Control Input
This circuit’s function would otherwise require a dual driver,
two MOSFETs, plus two diodes (or a dual driver plus four
MOSFETs).
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 2.
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.
Open-Load Detection
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.
Refer to “Typical Applications” (first page). 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
100k resistor will draw 50µA 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.
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.
3.3V
2
3
4
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
Capacitive
Load
6
5
0.1µF
Card
Figure 3. Hot Plug-In Concept
Power Bus Switch
A gate capacitor may be added to the MIC2505 to slow the
turn on time even more, reducing the inrush current. See
“MIC2505 Turn-On Delay” graph. The UVLO feature insures
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.
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 2, when U1 is on and
April 2004
MIC2505BM
1
GND
Socket
Power Control
Circuitry
9
M9999-042704
MIC2505/2506
Micrel
Applications Information
USB Application
Figure 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
MIC2505-2/-1
ON/OFF
EN
OVERCURRENT
IN
GND
OUT
Downstream
USB
Port 1
500mA max.
VBUS
IN
D+
0.01µF
33µF
GND
D–
GND
0.1µF
D+
D–
33µF
OUT
FLG
GATE
4.7
µF
0.01µF
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 4. Ganged-Switch Self-Powered Hub
M9999-042704
10
April 2004
MIC2505/2506
Micrel
Package Information
PIN 1
DIMENSIONS:
INCH (MM)
0.380 (9.65)
0.370 (9.40)
0.255 (6.48)
0.245 (6.22)
0.135 (3.43)
0.125 (3.18)
0.300 (7.62)
0.013 (0.330)
0.010 (0.254)
0.018 (0.57)
0.130 (3.30)
0.100 (2.54)
0.380 (9.65)
0.320 (8.13)
0.0375 (0.952)
8-Pin Plastic DIP (N)
0.026 (0.65)
MAX)
PIN 1
0.157 (3.99)
0.150 (3.81)
DIMENSIONS:
INCHES (MM)
0.050 (1.27)
TYP
0.064 (1.63)
0.045 (1.14)
0.197 (5.0)
0.189 (4.8)
0.020 (0.51)
0.013 (0.33)
0.0098 (0.249)
0.0040 (0.102)
0°–8°
SEATING
PLANE
45°
0.010 (0.25)
0.007 (0.18)
0.050 (1.27)
0.016 (0.40)
0.244 (6.20)
0.228 (5.79)
8-Pin SOP (M)
April 2004
11
M9999-042704
MIC2505/2506
Micrel
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
WEB
USA
http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2004 Micrel, Incorporated.
M9999-042704
12
April 2004