19-2663; Rev 3; 10/08
200mA/250mA/300mA Current-Limit Switches
The MAX4789–MAX4794 family of switches feature
internal current limiting to prevent damage to host
devices due to faulty load conditions. These analog
switches have a low 0.2Ω on-resistance and operate
from 2.3V to 5.5V input voltage range. They are available with guaranteed 200mA, 250mA, and 300mA current limits, making them ideal for SDIO and other load
switching applications.
When the switch is on and a load is connected to the
port, a guaranteed blanking time of 14ms ensures that
the transient voltages settle down. If after this blanking
time the load current is greater than the current limit,
the MAX4789, MAX4791, and MAX4793 enter a latchoff state where the switch is turned off and FLAG is
issued to the microprocessor. The switch can be turned
on again by cycling the power or the ON pin.
The MAX4790, MAX4792, and MAX4794 have an
autoretry feature where the switch turns off after the
blanking time and then continuously checks to see if
the overload condition is present. The switch remains
on after the overload condition disappears.
The MAX4789–MAX4794 are available in 6-pin 3mm x
3mm TDFN and tiny space-saving 4-pin SOT143 packages. The MAX4789/MAX4790/MAX4791/MAX4793 are
also available in a tiny 5-pin SOT23 package. For lower
current current-limiting switches, refer to the MAX4785–
MAX4788 data sheet.
Applications
PDAs and Palmtop Devices
Features
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
Guaranteed Current Limit: 200mA, 250mA, 300mA
Thermal-Shutdown Protection
Reverse Current Protection
0.2Ω On-Resistance
14ms Guaranteed Blanking Time
FLAG Function (MAX4789/MAX4791/MAX4793)
80µA Supply Current
8µA Latch-Off Current
(MAX4789/MAX4791/MAX4793)
0.01µA Shutdown Current
2.3V to 5.5V Supply Range
Undervoltage Lockout
Fast Current-Limit Response Time (5µs)
TDFN and SOT23/SOT143 Packages
Ordering Information
TEMP RANGE
PINPACKAGE
TOP
MARK
MAX4789EUS+T
-40°C to +85°C
4 SOT143
KAFE
MAX4789EUK+T
-40°C to +85°C
5 SOT23
AEAC
MAX4789ETT+
-40°C to +85°C
6 TDFN-EP*
ABO
MAX4790EUS+T
-40°C to +85°C
4 SOT143
KAFF
MAX4790ETT+
-40°C to +85°C
6 TDFN-EP
ABP
PART
*EP = Exposed paddle.
+Denotes a lead-free/RoHS-compliant package.
T = Tape and reel.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
Cell Phones
GPS Systems
Typical Operating Circuit
Handheld Devices
SDIO
2.3V TO 5.5V
Pin Configurations
TOP VIEW
IN
IN 1
GND 2
ON 3
5 OUT
MAX4789
MAX4791
MAX4793
SOT23
OUT 1
4 IN
MAX4789–
MAX4794
4 FLAG
GND 2
3 ON
SOT143
ON
MAX4789
MAX4791
MAX4793
μP
FLAG
TO SDIO PORT
OUT
GND
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
MAX4789–MAX4794
General Description
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
ABSOLUTE MAXIMUM RATINGS
IN, ON, FLAG, OUT to GND .....................................-0.3V to +6V
OUT Short Circuit to GND .................................Internally Limited
Continuous Power Dissipation (TA = +70°C)
4-Pin SOT143 (derate 4.0mW/°C above +70°C)..........320mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
6-Pin TDFN (derate 24.4mW/°C above +70°C).........1951.2mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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
(VIN = 2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = 3.3V, TA = +25°C.) (Note 1)
PARAMETER
Operating Voltage
Quiescent Current
SYMBOL
CONDITIONS
VIN
IQ
TYP
2.3
VON = VIN, IOUT = 0, VIN = +2.3V to +5.0V
switch on
VIN = +5.0V to +5.5V
Latch-Off Current (Note 2)
ILATCH
VON = VIN, after an overcurrent fault
(MAX4789/MAX4791/MAX4793)
Shutdown Current
ISHDN
VON = 0V
Forward Current Limit
MIN
80
MAX
UNITS
5.5
V
120
160
8
0.01
15
µA
1
µA
MAX4789/MAX4790
200
300
MAX4791/MAX4792
250
375
MAX4793/MAX4794
300
300
Reverse Current Limit
MAX4791/MAX4792
375
Shutdown Reverse Leakage
VON = 0, VIN = 3V, VOUT = 5V
ON Input Leakage
VON = VIN or GND
Off Switch Leakage
VON = 0V, VOUT = 0V
MAX4793/MAX4794
UVLO
Rising edge
-1
0.01
1.8
µA
+1
µA
1
µA
2.2
V
100
RON
ON Input Logic High Voltage
VIH
ON Input Logic Low Voltage
VIL
TA = +25°C, IOUT = 100mA
0.2
TA = -40°C to +85°C, IOUT = 100mA
mV
0.4
0.5
2.0
FLAG Output Logic Low Voltage
ISINK = 1mA (MAX4789/MAX4791/MAX4793)
FLAG Output High Leakage
Current
VIN = V FLAG = 5.5V
(MAX4789/MAX4791/MAX4793)
mA
450
100
Undervoltage Lockout Hysteresis
On-Resistance
mA
450
MAX4789/MAX4790
Undervoltage Lockout
µA
Ω
V
0.8
V
0.4
V
1
µA
Thermal Shutdown
150
°C
Thermal-Shutdown Hysteresis
15
°C
DYNAMIC
Turn-On Time (Note 3)
VON from low to high; IOUT = 10mA,
CL = 0.1µF
100
µs
Turn-Off Time (Note 3)
VON from high to low; IOUT = 10mA,
CL = 0.1µF
40
ns
2
_______________________________________________________________________________________
200mA/250mA/300mA Current-Limit Switches
(VIN = 2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = 3.3V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
Blanking Time
CONDITIONS
tBLANK
MIN
Overcurrent fault (Figures 2, 3)
Short-Circuit Current-Limit
Response Time
TYP
14
VON = VIN = 3.3V, short circuit applied to
OUT
Retry Time (Note 4)
tRETRY
MAX
UNITS
60
ms
5
MAX4790/MAX4792/MAX4794 (Figure 2)
µs
98
420
ms
Note 1: All parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation.
Note 2: Latch-off current does not include the current flowing into FLAG.
Note 3: The on time is defined as the time taken for the current through the switch to go from 0mA to full load. The off-time is defined
as the time taken for the current through the switch to go from full load to 0mA.
Note 4: Retry time is typically 7 times the blanking time.
Typical Operating Characteristics
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE
VON = VIN
100
70
60
50
40
30
20
VIN = 5V
80
LATCH-OFF (μA)
SUPPLY CURRENT (μA)
VIN = 3.3V
60
40
20
10
0
0
2.5
3.0
3.5
4.0
4.5
5.0
10
35
60
85
VIN = 5V
VIN = 3.3V
-40
-15
10
35
60
TEMPERATURE (°C)
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
SHUTDOWN LEAKAGE CURRENT
vs. TEMPERATURE
LATCH-OFF LEAKAGE CURRENT
vs. TEMPERATURE
VIN = 5V
1
0.1
VIN = 3.3V
0.01
0.001
-15
10
35
TEMPERATURE (°C)
60
85
VIN = 5V
1
VIN = 3.3V
0.1
0.01
0.001
0.0001
-40
100
LATCH-OFF LEAKAGE CURRENT (nA)
10
10
MAX4789 toc05
MAX4789 toc04
SHUTDOWN SUPPLY CURRENT (nA)
-15
VON = VIN
SUPPLY VOLTAGE (V)
100
-40
-40
5.5
SHUTDOWN LEAKAGE CURRENT (nA)
2.0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
85
MAX4789 toc06
SUPPLY CURRENT (μA)
80
MAX4789 toc02
VON = VIN
90
120
MAX4789 toc01
100
LATCH-OFF CURRENT
vs. TEMPERATURE
MAX4789 toc03
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
10
1
VIN = 5V
0.1
VIN = 3.3V
0.01
0.001
0.0001
-15
10
35
TEMPERATURE (°C)
60
85
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
3
MAX4789–MAX4794
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics (continued)
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
OUTPUT CURRENT
vs. OUTPUT VOLTAGE
1.0
VIN = 5V
0.8
0.6
0.4
MAX4789 toc08
450
400
OUTPUT CURRENT (mA)
1.2
NORMALIZED RON
500
MAX4789 toc07
1.4
MAX4793/MAX4794
350
300
MAX4789/MAX4790
250
MAX4791/MAX4792
200
150
100
0.2
50
0
0
-15
10
35
60
85
VIN - VOUT (V)
SWITCH TURN-ON/OFF TIMES
vs. TEMPERATURE
FLAG-BLANKING TIMEOUT
vs. TEMPERATURE
ON
45
FLAG-BLANKING TIME (ms)
100
VIN = 5V
VIN = 3.3V
50
MAX4789 toc09
1000
10
0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3
TEMPERATURE (°C)
1
0.1
OFF
MAX4789 toc10
-40
TURN-ON/OFF TIMES (μs)
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
40
35
30
25
0.01
ILOAD = 10mA
20
0.001
-40
-15
10
35
60
-40
85
-15
10
35
CURRENT-LIMIT RESPONSE
85
CURRENT-LIMIT RESPONSE
MAX4789 toc11
VIN = 3.3V
CIN = 1μF
60
TEMPERATURE (°C)
TEMPERATURE (°C)
MAX4789 toc12
COUT = 1μF
VIN
2V/div
VIN = VON
1V/div
VON
2V/div
IOUT
100mA/div
40μs/div
4
IOUT
100mA/div
VIN = VON
CIN = 1μF
COUT = 1μF
20μs/div
_______________________________________________________________________________________
200mA/250mA/300mA Current-Limit Switches
CURRENT-LIMIT RESPONSE
(OUT SHORTED TO GND)
SWITCH TURN-ON TIME RESPONSE
MAX4789 toc13
CIN = 1μF
COUT = 1μF
MAX4789 toc14
VIN
2V/div
VON
1V/div
VOUT
2V/div
IOUT
10mA/div
IOUT
5A/div
40μs/div
100μs/div
FLAG-BLANKING RESPONSE
SWITCH TURN-OFF TIME RESPONSE
MAX4789 toc16
MAX4789 toc15
VON
2V/div
VIN
2V/div
VON
2V/div
FLAG
2V/div
IOUT
10mA/div
IOUT
100mA/div
4ms/div
200ns/div
Pin Description
PIN
TDFN-EP
MAX4789
MAX4791
MAX4793
TDFN-EP
MAX4790
MAX4792
MAX4794
5-SOT23 4-SOT143
MAX4789 MAX4789–
MAX4791 MAX4794
MAX4793
1
—
4
—
FLAG
Fault Output. This open-drain output goes low when the device stays in
forward or reverse current limit for more than the blanking time period.
FLAG is high impedance when a fault is not present or when ON is low.
2
2
2
2
GND
Ground
3
3
3
3
ON
4
1, 4
—
—
N.C.
5
5
1
4
IN
6
6
5
1
OUT
—
—
FUNCTION
NAME
EP
Active-High Switch On Input. A logic high turns the switch on.
No Connection. Not internally connected.
Input. Bypass IN with a 0.1µF ceramic capacitor to ground.
Switch Output. Bypass OUT with a 0.1µF ceramic capacitor to ground.
Exposed paddle. Connect EP to a large ground plane to maximize
thermal performance. EP is not intended as an electrical connection
point. (TDFN Package only.)
_______________________________________________________________________________________
5
MAX4789–MAX4794
Typical Operating Characteristics (continued)
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
REVERSE CURRENT
DETECTOR
MAX4789/MAX4791/
MAX4793 ONLY
FLAG
BLANKING TIME
CIRCUITRY
N
FORWARD CURRENT
DETECTOR
N
IN
UNDERVOLTAGE
LOCKOUT
ON
OUT
+2.0V
LOGIC
AUTORETRY
MAX4789–MAX4794
GND
Figure 1. Functional Diagram
Detailed Description
The MAX4789–MAX4794 are forward/reverse currentlimited switches that operate from a 2.3V to 5.5V input
voltage range and guarantee a 200mA, 250mA, and
300mA minimum current-limit threshold for different
options. The voltage drop across an internal sense
resistor is compared to two reference voltages to indicate a forward or reverse current-limit fault. When the
load current exceeds the preset current limit for greater
than the fault-blanking time, the switch opens.
The MAX4790, MAX4792, and MAX4794 have an
autoretry function that turns on the switch again after an
internal retry time expires. If the faulty load condition is
still present after the blanking time, the switch turns off
again and the cycle is repeated. If the faulty load condition is not present, the switch remains on.
The MAX4789, MAX4791, and MAX4793 do not have
the autoretry option and the switch remains in latch-off
mode until the ON pin or the input power is cycled from
high to low and then high again.
The undervoltage lockout (UVLO) circuit prevents erroneous switch operation when the input voltage goes too
low during startup conditions.
6
Reverse Current Protection
The MAX4789–MAX4794 limit the reverse current (VOUT
to VIN) from exceeding the maximum IREV value. The
switch is shut off and FLAG is asserted (MAX4789/
MAX4791/MAX4793) if the reverse current-limit condition
persists for more than the blanking time. This feature prevents excessive reverse currents from flowing through the
device.
Switch-On/Off Control
Toggle ON high to enable the current-limited switches.
The switches are continuously on, only if VIN exceeds the
UVLO threshold (typically 2V) and there is no fault. When
a forward/reverse current fault is present or the die
exceeds the thermal-shutdown temperature of +150°C,
OUT is internally disconnected from IN and the supply
current decreases to 8µA (latch off). The switch is now
operating in one of its off states. The switch-off state also
occurs when driving ON low, thus reducing the supply
current (shutdown) to 0.01µA. Table 1 illustrates the
ON/OFF state of the MAX4789–MAX4794 current-limit
switches.
FLAG Indicator
The MAX4789, MAX4791, and MAX4793 feature a
latched fault output, FLAG. Whenever a fault is activated, it latches FLAG output low and also turns the switch
_______________________________________________________________________________________
200mA/250mA/300mA Current-Limit Switches
ON
FAULT
Low
X
OFF
Shutdown
High
Undervoltage Lockout
OFF
Shutdown
High
Thermal
OFF immediately (tBLANK period does not apply)
Latch off
OFF after tBLANK period has elapsed
ON during tBLANK period, OFF during tRETRY period for the
MAX4790, MAX4792, and MAX4794; cycle repeats until fault
is removed
Latch off
High
Current Limit
SWITCH ON/OFF
off. FLAG is an open-drain output transistor and requires
an external pullup resistor from FLAG to IN. During shutdown (ON is low), the pulldown on FLAG output is
released in order to limit power dissipation. FLAG goes
low when any of the following conditions occur:
• The die temperature exceeds the thermal-shutdown
temperature limit of +150°C.
• The device is in current limit for more than the faultblanking period.
• VIN is below UVLO threshold.
Autoretry (MAX4790/MAX4792/MAX4794)
When the forward or reverse current-limit threshold is
exceeded, tBLANK timer begins counting (Figure 2).
The timer resets if the overcurrent condition disappears
before tBLANK has elapsed. A retry time delay, tRETRY,
is started immediately after tBLANK has elapsed and
during that time, the switch is latched off. At the end of
tRETRY, the switch is turned on again. If the fault still
exists, the cycle is repeated. If the fault has been
removed, the switch stays on.
The autoretry feature saves system power in the case of
an overcurrent or short-circuit condition. During tBLANK,
when the switch is on, the supply current is at the current limit. During tRETRY, when the switch is off, the current through the switch is zero. Instead of observing the
full load current, the switch sees the equivalent load
current times duty cycle or I SUPPLY = I LOAD ✕
t BLANK /(t BLANK + t RETRY ). With a typical t BLANK =
37ms and typical tRETRY = 259ms, the duty cycle is
12%, which results in an 88% power savings over the
switch being on the entire time. The duty cycle is consistent across the process and devices.
Latch Off (MAX4789/MAX4791/MAX4793)
When the forward or reverse current-limit threshold is
exceeded, tBLANK timer begins counting. The timer
resets if the overcurrent condition disappears before
tBLANK has elapsed. The switch is shut off if the overcurrent condition continues up to the end of the blank-
SUPPLY CURRENT MODE
tBLANK
tRETRY
See the Autoretry section
tBLANK
tBLANK
CURRENT
LIMIT
LOAD
CURRENT
SHORT
CONDITION
REMOVED
ON
SWITCH
STATUS
OFF
Figure 2. MAX4790/MAX4792/MAX4794 Autoretry Fault
Blanking Diagram
ing time. Reset the switch by either toggling ON (Figure
3a) or cycling the input voltage below UVLO, typically
2V (Figure 3b).
Fault Blanking
The MAX4789–MAX4794 feature 14ms (min) fault blanking. Fault blanking allows current-limit faults, including
momentary short-circuit faults that occur when hot
swapping a capacitive load, and also ensures that no
fault is issued during power-up. When a load transient
causes the device to enter current limit, an internal
counter starts. If the load-transient fault persists beyond
the fault-blanking timeout, the MAX4789/MAX4791/
MAX4793 FLAG asserts low. Load-transient faults less
than tBLANK do not cause a FLAG output assertion. Only
current-limit faults are blanked.
A thermal fault and input voltage drops below the UVLO
threshold cause FLAG to assert immediately and do not
wait for the blanking time.
Thermal Shutdown
The MAX4789–MAX4794 have a thermal shutdown feature to protect the devices from overheating. The switch
turns off and FLAG goes low immediately (no fault blanking) when the junction temperature exceeds +150°C.
The switch turns back on when the device temperature
drops approximately 15°C.
_______________________________________________________________________________________
7
MAX4789–MAX4794
Table 1. MAX4789–MAX4794 Switch Truth Table
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
tBLANK
the MAX4789–MAX4794 from tripping erroneously. If
the load capacitance is too large, then current may not
have enough time to charge the capacitance and the
device assumes that there is a faulty load condition.
The maximum capacitive load value that can be driven
from OUT is obtained by the following formula:
tBLANK
LOAD
CURRENT
ON
SWITCH
STATUS
CMAX <
Layout and Thermal Dissipation
To optimize the switch response time to output shortcircuit conditions, it is very important to keep all traces
as short as possible to reduce the effect of undesirable
parasitic inductance. Place input and output capacitors
as close as possible to the device (no more than 5mm).
IN and OUT pins must be connected with short traces
to the power bus.
During normal operation, the power dissipation is small
and the package temperature change is minimal. If the
output is continuously shorted to ground at the maximum supply voltage, the operation of the switches with
the autoretry option does not cause problems because
the total power dissipated during the short is scaled by
the duty cycle:
FLAG PIN
STATUS
(a)
tBLANK
tBLANK
LOAD
CURRENT
ON
IN PIN
VOLTAGE
VIN
OFF
ON PIN
VOLTAGE
SWITCH
STATUS
IFWD _ MIN × tBLANK _ MIN
OFF
UVLO
PMAX =
FLAG PIN
STATUS
VIN _ MAX × IOUT _ MAX × tBLANK
tRETRY + tBLANK
= 302mW
(b)
Figure 3. MAX4789/MAX4791/MAX4793 Latch-Off Fault
Blanking
Applications Information
Input Capacitor
To limit the input voltage drop during momentary output
short-circuit conditions, connect a capacitor from IN to
GND. A 0.1µF ceramic capacitor is adequate for most
applications; however, higher capacitor values further
reduce the voltage drop at the input and are recommended for lower voltage applications.
where VIN = 5.5V, IOUT = 450mA, tBLANK = 14ms, and
tRETRY = 98ms.
Attention must be given to the MAX4789, MAX4791,
and MAX4793 where the latch-off condition must be
manually reset by toggling ON from high to low. If the
latch-off time duration is not sufficiently high, it is possible for the device to reach the thermal-shutdown
threshold and never be able to turn the device on until it
cools down.
Chip Information
PROCESS: BiCMOS
Output Capacitance
Connect a 0.1µF capacitor from OUT to GND. This
capacitor helps prevent inductive parasitics from
pulling OUT negative during turn-off, thus preventing
8
_______________________________________________________________________________________
200mA/250mA/300mA Current-Limit Switches
Ordering Information (continued)
TEMP RANGE
PINPACKAGE
TOP
MARK
MAX4791EUS+T
-40°C to +85°C
4 SOT143
KAFG
MAX4791EUK+T
-40°C to +85°C
5 SOT23
AEAE
MAX4791EUK/V+T
-40°C to +85°C
5 SOT23-5
AFGJ
MAX4791ETT+
-40°C to +85°C
6 TDFN-EP*
ABQ
MAX4792EUS+T
-40°C to +85°C
4 SOT143
KAFH
MAX4792ETT+
-40°C to +85°C
6 TDFN-EP*
ABR
MAX4793EUS+T
-40°C to +85°C
4 SOT143
KAFI
MAX4793EUK+T
-40°C to +85°C
5 SOT23
AEAG
MAX4793ETT+
-40°C to +85°C
6 TDFN-EP*
ABS
MAX4794EUS+T
-40°C to +85°C
4 SOT143
KAFJ
MAX4794ETT+
-40°C to +85°C
6 TDFN-EP*
ABT
PART
TOP VIEW
FLAG (N.C.) 1
GND 2
ON 3
6
MAX4789–
MAX4794
*EP
5
IN
4
N.C.
3mm x 3mm TDFN
*EP = EXPOSED PAD. CONNECT EP TO GND.
*( ) FOR THE MAX4790, MAX4792, AND MAX4794.
OUT
*EP = Exposed paddle.
/V denotes an automotive qualified part.
+Denotes a lead-free/RoHS-compliant package.
Selector Guide
PART
PINPACKAGE
FLAG
CURRENT
LIMIT (mA) FUNCTION
AUTORETRY
MAX4789
4 SOT143
200
No
No
MAX4789
5 SOT23
200
Yes
No
MAX4789
6 TDFN
200
Yes
No
MAX4790
4 SOT143
200
No
Yes
MAX4790
6 TDFN
200
No
Yes
MAX4790
5 SOT23
200
No
Yes
MAX4791
4 SOT143
250
No
No
MAX4791
5 SOT23
250
Yes
No
MAX4791
6 TDFN
250
Yes
No
MAX4792
4 SOT143
250
No
Yes
MAX4792
6 TDFN
250
No
Yes
MAX4793
4 SOT143
300
No
No
MAX4793
5 SOT23
300
Yes
No
MAX4793
6 TDFN
300
Yes
No
MAX4794
4 SOT143
300
No
Yes
MAX4794
6 TDFN
300
No
Yes
_______________________________________________________________________________________
9
MAX4789–MAX4794
Pin Configurations (continued)
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
10
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
4 SOT143
U4-2
21-0052
5 SOT23
U5-2
21-0057
6 TDFN-EP
T633-2
21-0137
______________________________________________________________________________________
200mA/250mA/300mA Current-Limit Switches
REVISION
NUMBER
REVISION
DATE
2
2/05
Changed package description
3
10/08
Changed Ordering Information and Package Information.
DESCRIPTION
PAGES
CHANGED
⎯
1, 8–11
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11
© 2008 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
MAX4789–MAX4794
Revision History
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