General Description
The MAX4626/MAX4627/MAX4628 are low-on-resistance,
low-voltage, single-pole/single-throw (SPST) analog
switches that operate from a +1.8V to +5.5V single
supply. The MAX4626 is normally open (NO), and the
MAX4627 is normally closed (NC). The MAX4628 is
normally open (NO) and has two control inputs. These
devices also have fast switching speeds (tON = 50ns max,
tOFF = 30ns max).
When powered from a +5V supply, the MAX4626/
MAX4627/MAX4628 offer 0.5Ω max on-resistance (RON)
with 0.1Ω max RON flatness, and their digital logic inputs
are TTL compatible. These switches also feature over-
current protection to prevent device damage from short
circuits and excessive loads.
The MAX4626 is pin compatible with the MAX4514, and
the MAX4627 is pin compatible with the MAX4515. The
MAX4626/MAX4627 are available in SOT23-5 packages;
the MAX4628 is available in a SOT23-6 package.
Applications
● Power Routing
●Battery-Operated Equipment
● Audio and Video Signal Routing
●Low-Voltage Data-Acquisition Systems
●Communications Circuits
●PCMCIA Cards
●Cellular Phones
●Modems
●Hard Drives
Benets and Features
● Low RON
• 0.5Ω max (+5V Supply)
• 0.9Ω max (+3V Supply)
● 0.1Ω max RON Flatness (+5V Supply)
●Overcurrent Protection
●Single-Supply Operation (+1.8V to +5.5V)
●Available in SOT23 Packages
●Fast Switching: tON = 50ns max, tOFF = 30ns max
●TTL-Logic Compatible at +5V
●Pin Compatible with MAX4514 (MAX4626)
Pin Compatible with MAX4515 (MAX4627)
19-1633; Rev 1; 5/17
PART TEMP. RANGE PIN-
PACKAGE
TOP
MARK
MAX4626EUK+T -40°C to +85°C 5 SOT23-5 +ADMJ
MAX4627EUK+T -40°C to +85°C 5 SOT23-5 +ADMK
MAX4628EUT+T -40°C to +85°C 6 SOT23-6 +AADN
+Denotes lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
1
COM
2
NO
3
5
4
GND
V+
SOT23-5
TOP VIEW
MAX4626
LOGIC SWITCH
0
1
OFF
ON
IN
MAX4626
1
COM
2
NC
3
5
4
GND
V+
SOT23-5
MAX4627
SWITCHES SHOWN FOR LOGIC “O” INPUT.
LOGIC SWITCH
0
1
ON
OFF
IN
MAX4627
1
COM
2
NO
3
6
4
GND
V+
5IN
SOT23-5
MAX4628
IN SWITCH
1
1
0
0
OFF
OFF
OFF
ON
IN
MAX4628
IN
0
1
0
1
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
Pin Congurations/Functional Diagrams/Truth Tables
Ordering Information
Voltages Referenced to GND
V+, IN, IN ................................................................. -0.3V to +6V
NO, NC, COM (Note 1) ...............................-0.3V to (V+ + 0.3V)
Continuous Current NO, NC to COM ............................. ±400mA
Peak Switch Current NO, NC to COM
(pulsed at 1ms, 10% duty cycle max) ........................±800mA
Continuous Power Dissipation (TA = 70°C)
5-Pin SOT23-5 (derate 7.1mW/°C above +70°C) .......571mW
6-Pin SOT23-6 (derate 7.1mW/°C above +70°C) .......571mW
Operating Temperature Range
MAX462_EU_ ................................................. -40°C to +85°C
Junction Temperature ...................................................... +150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(V+ = +5V ±10%, GND = 0, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG SWITCH
Analog Signal Range VCOM, VNO,
VNC
0 V+ V
On-Resistance RON
V+ = 4.5V, VNO or VNC = 3.5V,
ICOM = 100mA
TA = +25°C 0.35 0.5 Ω
TA = TMIN to TMAX 0.6
On-Resistance Flatness
(Note 4) RFLAT(ON)
V+ = 4.5V; VCOM = 0, 1V,
2V; ICOM = 100mA
TA = +25°C 0.05 0.10 Ω
TA = TMIN to TMAX 0.10
NO or NC Off-Leakage
Current
INO(OFF),
INC(OFF),
V+ = 5.5V; VCOM = 1V, 4.5V;
VNO or VNC = 4.5V, 1V
TA = +25°C -2 0.2 2 nA
TA = TMIN to TMAX -20 20
COM Off-Leakage
Current ICOM(OFF)
V+ = 5.5V; VCOM = 1V, 4.5V;
VNO or VNC = 4.5V, 1V
TA = +25°C -2 0.2 2 nA
TA = TMIN to TMAX -20 20
COM On-Leakage
Change ICOM(ON)
V+ = 5.5V; VCOM = 1V, 4.5V;
VNO or VNC = 1V, 4.5V, or oating
TA = +25°C -4 0.3 4 nA
TA = TMIN to TMAX -40 40
Overcurrent-Protection
Threshold Current TA = +25°C 2.4 A
DYNAMIC
Turn-On Time tON VNO or VNC = 3V, Figure 2 TA = +25°C 40 50 ns
TA = TMIN to TMAX 60
Turn-Off Time tOFF VNO or VNC = 3V, Figure 2 TA = +25°C 18 30 ns
TA = TMIN to TMAX 40
Charge Injection Q CL = 1.0nF, VGEN = 0, RGEN = 0, TA = +25°C, Figure 3 40 pC
Off-Isolation (Note 5) OIRR RL = 50Ω, CL = 5pF, f = 1MHz, TA = +25°C, Figure 4 -51 dB
COM Off-Capacitance CCOM(OFF) f = 1MHz, TA = +25°C, Figure 5 65 pF
NC or NO Off-
Capacitance COFF f = 1MHz, TA = +25°C, Figure 5 65 pF
COM On-Capacitance CCOM(ON) f = 1MHz, TA = +25°C, Figure 5 130 pF
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
www.maximintegrated.com Maxim Integrated
│
2
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics—Single +5V Supply
Note 1: Signals on NC, NO, or COM exceeding V+ or GND are clamped by internal diodes.
(V+ = +2.7V to +3.6V, GND = 0, VINH = 2.0V, VINL = 0.6V, TA = TMIN to TMAX, unless otherwise noted.) (Notes 2, 3)
(V+ = +5V ±10%, GND = 0, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) (Notes 2, 3)
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in
this data sheet.
Note 3: SOT-packaged parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and
correlation.
Note 4: Flatness is defined as the difference between the maximum and minimum values of on-resistance as measured over the
specified analog signal range.
Note 5: Off-Isolation = 20log10 [VCOM / (VNC or VNO)], VCOM = output, VNC or VNO = input to off switch.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LOGIC INPUT
Input Voltage Low VINL 0.8 V
Input Voltage High VINH 2.4 V
Logic Input Current IIN -1 1 µA
SUPPLY
Power-Supply Range V+ 1.8 5.5 V
Positive Supply Current I+ V+ = 5.5V, VIN = 0 or V+ 10 µA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG SWITCH
Analog Signal Range VCOM, VNO,
VNC
0 V+ V
On-Resistance RON
V+ = 2.7V, VNO or VNC = 1.5V,
ICOM = 100mA
TA = +25°C 0.4 0.8 Ω
TA = TMIN to TMAX 0.9
On-Resistance
Flatness (Note 4) RFLAT(ON)
V+ = 2.7V; ICOM = 100mA;
VNO or VNC = 0, 0.75V, 1.5V; TA = +25°C 0.1 Ω
DYNAMIC
Turn-On Time tON VNO or VNC = 1.5V, Figure 2 TA = +25°C 65 80 ns
TA = TMIN to TMAX 90
Turn-Off Time tOFF VNO or VNC = 1.5V, Figure 2 TA = +25°C 22 40 ns
TA = TMIN to TMAX 50
Charge Injection Q CL = 1.0nF, Figure 3, VGEN = 0, RGEN = 0,
TA = +25°C 30 pC
LOGIC INPUT
Input Voltage Low VINL 0.6 V
Input Voltage High VINH 2.0 V
Logic Input Current IIN -1 1 µA
SUPPLY
Positive Supply Current I+ V = +3.6V, VIN = 0 10 µA
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
www.maximintegrated.com Maxim Integrated
│
3
Electrical Characteristics—Single +3V Supply
Electrical Characteristics—Single +5V Supply (continued)
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. COM VOLTAGE
OVER TEMPERATURE
MAX4626-28toc02
VCOM (V)
RON(Ω)
4321
0.1
0.2
0.3
0.4
0.5
0.6
0
0 5
V+ = 5V
ICOM = 100mA
TA = +105°C
TA = +85°C
TA = +25°C
TA = -40°C
TA = -55°C
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
MAX4626-28toc03
VSUPPLY (V)
tON/tOFF (ns)
543
10
20
30
40
50
60
0
2 6
tON
tOFF
TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4626-28toc04
TEMPERATURE (°C)
tON/tOFF (ns)
6040200-20
20
40
60
80
100
0
-40 80
tON
tOFF
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4626-28toc05
TEMPERATURE (°C)
ON/OFF-LEAKAGE (nA)
806040200-20
0.01
0.1
1
10
0.001
-40 100
CHARGE INJECTION vs. COM VOLTAGE
MAX4626-28toc06
VCOM (V)
Q (pC)
4321
20
40
60
80
100
120
0
0 5
FREQUENCY RESPONSE
MAX4626-28toc07
FEQUENCY (Hz)
LOSS (dB)
10M1M100k
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
PHASE (degrees)
-70
-60
-50
-40
-30
-20
-10
0
10
-80
30k 100M
V+ = 5V
50Ω = IN/OUT
ON-LOSS
ON-PHASE
OFF-ISOLATION
ON-RESISTANCE vs. COM VOLTAGE
OVER SUPPLY VOLTAGE
MAX4626-28toc01
VCOM (V)
RON(Ω)
4321
0.5
1.0
1.5
2.0
2.5
3.0
0
0 5
ICOM = 100mA
VCC = +1.8V
VCC = +2.0V
VCC = +2.3V
VCC = +2.5V
VCC = +3.0V
VCC = +5V
LOGIC THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
MAX4626-28toc08
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD VOLTAGE (V)
543
0.5
1.0
1.5
2.0
2.5
0
2 6
VIN RISING
VIN FALLING
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
Maxim Integrated
│
4
www.maximintegrated.com
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
PIN NAME FUNCTION
MAX4626 MAX4627 MAX4628
1 1 1 COM Analog Switch—Common
2 — 2 NO Analog Switch—Normally Open
3 3 3 GND Ground
4 4 5 IN Digital Control Input
5 5 6 V+ Positive Supply Input
— 2 — NC Analog Switch—Normally Closed
— — 4 IN Inverted Digital Control Input (see MAX4628 Truth Table)
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4626-28toc09
FREQUENCY (Hz)
THD (%)
10k1k100
0.01
10 100k
0.1
0.001
OVERCURRENT RESPONSE
MAX4626-28toc10
500µs/div
3A
3V
ICOM
1A/div
VCOM
2V/div
0
0
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
Maxim Integrated
│
5
www.maximintegrated.com
Typical Operating Characteristics (continued)
Pin Description
Detailed Description
The MAX4626/MAX4627/MAX4628 are low-on-resistance
(RON), low-voltage, single-pole/single-throw (SPST)
analog switches that operate from a +1.8V to +5.5V
single supply. The MAX4626 is normally open (NO), and
the MAX4627 is normally closed (NC). The MAX4628 is
normally open (NO) and has two control inputs.
When powered from a +5V supply, their 0.5Ω RON allows
high continuous currents to be switched in a variety of
applications. In the event of an overcurrent condition,
these switches provide both current-limit and thermal-
shutdown protection.
Current-Limit Protection
The MAX4626/MAX4627/MAX4628 feature current-limit
protection circuitry. When the voltage drop across the on
switch reaches 0.6V (typ), the internal circuitry activates.
The current limit is not instantaneous, but rather
integrates over time so that current limiting will not activate
under momentary short-circuit conditions encountered
when the switch output charges a small 0.1μF capacitor.
For sustained overcurrent conditions, the switch turns off
(opens). The switch turns on after 5ms and, if the over-
load condition persists, the switch will cycle off and on
to produce a pulsed output. A direct short circuit will be
detected immediately, and the switch will pulse on for 1μs,
then remain off for 5ms.
Applications Information
Logic Inputs
The MAX4626/MAX4627/MAX4628 logic inputs can be
driven up to +5.5V regardless of the supply voltage. For
example, with a +3.3V supply, IN or IN may be driven
low to 0V and high to 5.5V. Driving IN or IN Rail-to-Rail®
minimizes power consumption.
Analog Signal Levels
Analog signals that range over the entire supply voltage
(V+ to GND) can be passed with very little change in on-
resistance (see Typical Operating Characteristics). The
switches are bidirectional, so the NO, NC, and COM pins
can be used as either inputs or outputs.
Power-Supply Sequencing and
Overvoltage Protection
Caution: Do not exceed the absolute maximum rat-
ings; stresses beyond the listed ratings may cause
permanent damage to the devices.
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+ before applying
analog signals, especially if the analog signal is not cur-
rent limited. If this sequencing is not possible, and if the
analog inputs are not current limited to <20mA, add a
small-signal diode (D1) as shown in Figure 1. If the ana-
log signal can dip below GND, add D2. Adding protection
diodes reduces the analog range to a diode drop (about
0.7V) below V+ (for D1), and a diode drop above ground
(for D2). On-resistance increases by a small amount at
low supply voltages. Maximum supply voltage (V+) must
not exceed +6V.
Adding protection diode D2 causes the logic thresholds to
be shifted relative to GND. TTL compatibility is not guar-
anteed when protection diode D2 is added.
Protection diodes D1 and D2 also protect against some
overvoltage situations. With Figure 1’s circuit, if the supply
voltage is below the absolute maximum rating, and if a
fault voltage up to the absolute maximum rating is applied
to an analog signal pin, no damage will result.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
COM
D1
D2
NO
Vg
POSITIVE SUPPLY
V+
GND
MAX4626
MAX4627
MAX4628
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
www.maximintegrated.com Maxim Integrated
│
6
Figure 2. Switching Time
Figure 3. Charge Injection
Figure 4. On-Loss and Off-Isolation
MAX4626
MAX4627
MAX4628
RL
50Ω
VN_
LOGIC
INPUT
VINH
VOUT 0.9 · VOUT 0.9 · VOUT
50%
tr < 5ns
tf < 5ns
tOFF
tON
VINL
CL INCLUDES FIXTURE AND STRAY CAPACITANCE. LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
RL
RL + RON
VOUT = VN_ ( )
CL
35pF
VOUT
V+
V+
COM
GND
NO
IN
OR NC
SWITCH
OUTPUT 0V
MAX4626
MAX4627
MAX4628
VGEN
RGEN VINH
∆VOUT
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
CL
VOUT
VINL to VINH
V+
V+
COM
GND
NO
IN
OR NC
IN
ON
OFF OFF
IN
ON
OFF OFF
Q = (∆VOUT)(CL)
MAX4626
MAX4627
MAX4628
IN
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND “OFF” NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND “ON” NO_ OR NC_ TERMINAL ON EACH SWITCH.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
COM
0V OR V+
GND
+5V
MEAS
50Ω50Ω
NETWORK
ANALYZER
REF
10nF
V+
NO
50Ω
OFF-ISOLATION = 20log
50Ω
50Ω USE
ONLY FOR
ISOLATION
VOUT
VIN
VOUT
VIN
ON-LOSS = 20log VOUT
VIN
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
www.maximintegrated.com Maxim Integrated
│
7
Test Circuits/Timing Diagrams
Figure 5. Channel Off/On-Capacitance
MAX4626
MAX4627
MAX4628
V+
10nF
V+
GND
CAPACITANCE
METER
COM
IN
NC or
NO
VINL OR
VINH
f = 1MHz
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
www.maximintegrated.com Maxim Integrated
│
8
Chip Information
TRANSISTOR COUNT: 186
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
MAX4626/MAX4627/
MAX4628
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
© 2017 Maxim Integrated Products, Inc.
│
9
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 1/00 Initial Release —
1 5/17 Updated package information to indicate lead-free 1
Revision History
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.