General Description
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 0.2Ωon-resistance and operate
from 2.3V to 5.5V input voltage range. They are avail-
able with guaranteed 200mA, 250mA, and 300mA cur-
rent 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 latch-
off 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 pack-
ages. 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
Cell Phones
GPS Systems
Handheld Devices
SDIO
Features
♦Guaranteed Current Limit: 200mA, 250mA, 300mA
♦Thermal-Shutdown Protection
♦Reverse Current Protection
♦0.2ΩOn-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
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
2.3V TO 5.5V
IN
OUT
FLAG
GND
ON
μP
TO SDIO PORT
MAX4789
MAX4791
MAX4793
Typical Operating Circuit
19-2663; Rev 3; 10/08
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.
*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.
PART
TEMP RANGE
PIN-
PACKAGE
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 TD FN - E P *
ABO
MAX4790EUS+T
-40°C to +85°C 4 SOT143
KAFF
MAX4790ETT+
-40°C to +85°C 6 TDFN-EP
ABP
GND
FLAG
Pin Configurations continued at end of data sheet.
15OUTIN
MAX4789
MAX4791
MAX4793
SOT23
TOP VIEW
2
34
ON ON
14INOUT
MAX4789–
MAX4794
SOT143
23GND
Pin Configurations
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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)
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.
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
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Operating Voltage VIN 2.3 5.5 V
VIN = +2.3V to +5.0V
80 120
Quiescent Current IQVON = VIN, IOUT = 0,
switch on
VIN = +5.0V to +5.5V
160 µA
Latch-Off Current (Note 2) ILATCH VON = VIN, after an overcurrent fault
(MAX4789/MAX4791/MAX4793) 815µA
Shutdown Current ISHDN VON = 0V
0.01
1µA
MAX4789/MAX4790
200
300
MAX4791/MAX4792
250
375Forward Current Limit
MAX4793/MAX4794
300
450
mA
MAX4789/MAX4790 300
MAX4791/MAX4792 375
Reverse Current Limit
MAX4793/MAX4794 450
mA
Shutdown Reverse Leakage VON = 0, VIN = 3V, VOUT = 5V
100
µA
ON Input Leakage VON = VIN or GND -1 +1 µA
Off Switch Leakage VON = 0V, VOUT = 0V
0.01
1µA
Undervoltage Lockout UVLO Rising edge 1.8 2.2 V
Undervoltage Lockout Hysteresis
100
mV
TA = +25°C, IOUT = 100mA 0.2 0.4
On-Resistance RON TA
= - 40° C to + 85°C , IOU T = 100m A 0.5 Ω
ON Input Logic High Voltage VIH 2.0 V
ON Input Logic Low Voltage VIL 0.8 V
FLAG Output Logic Low Voltage
IS IN K = 1m A ( M AX 4789/M AX 4791/M AX 4793)
0.4 V
FLAG Output High Leakage
Current
VIN = V FLAG = 5.5V
(MAX4789/MAX4791/MAX4793) 1µA
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
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
_______________________________________________________________________________________ 3
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX4789 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (μA)
5.55.04.0 4.53.0 3.52.5
10
20
30
40
50
60
70
80
90
100
0
2.0
VON = VIN
SUPPLY CURRENT
vs. TEMPERATURE
MAX4789 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
603510-15
20
40
60
80
100
120
0
-40 85
VON = VIN
VIN = 5V
VIN = 3.3V
LATCH-OFF CURRENT
vs. TEMPERATURE
MAX4789 toc03
TEMPERATURE (°C)
LATCH-OFF (μA)
603510-15
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
0
-40 85
VON = VIN
VIN = 5V
VIN = 3.3V
100
10
0.001
-40 85
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
0.01
0.1
1
MAX4789 toc04
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (nA)
603510-15
VIN = 5V
VIN = 3.3V
10
-40 85
1
0.1
0.01
0.001
0.0001
SHUTDOWN LEAKAGE CURRENT
vs. TEMPERATURE
MAX4789 toc05
TEMPERATURE (°C)
SHUTDOWN LEAKAGE CURRENT (nA)
603510-15
VIN = 5V
VIN = 3.3V
LATCH-OFF LEAKAGE CURRENT
vs. TEMPERATURE
MAX4789 toc06
TEMPERATURE (°C)
LATCH-OFF LEAKAGE CURRENT (nA)
603510-15
0.001
0.01
0.1
1
10
100
0.0001
-40 85
VIN = 5V
VIN = 3.3V
Typical Operating Characteristics
(VIN = 3.3V, TA= +25°C, unless otherwise noted.)
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.
ELECTRICAL CHARACTERISTICS (continued)
(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
CONDITIONS
MIN TYP MAX
UNITS
Blanking Time tBLANK Overcurrent fault (Figures 2, 3) 14 60 ms
Short-Circuit Current-Limit
Response Time
VON = VIN = 3.3V, short circuit applied to
OUT 5µs
Retry Time (Note 4) tRETRY MAX4790/MAX4792/MAX4794 (Figure 2) 98 420 ms
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
4 _______________________________________________________________________________________
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
MAX4789 toc07
TEMPERATURE (°C)
NORMALIZED RON
603510-15
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
-40 85
VIN = 5V
OUTPUT CURRENT
vs. OUTPUT VOLTAGE
MAX4789 toc08
VIN - VOUT (V)
OUTPUT CURRENT (mA)
3.02.72.1 2.40.6 0.9 1.2 1.5 1.80.3
50
100
150
200
250
300
350
400
450
500
0
0 3.3
MAX4793/MAX4794
MAX4789/MAX4790
MAX4791/MAX4792
SWITCH TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4789 toc09
TEMPERATURE (°C)
TURN-ON/OFF TIMES (μs)
603510-15
0.01
0.1
1
10
100
1000
0.001
-40 85
ILOAD = 10mA
OFF
ON
VIN = 3.3V VIN = 5V
FLAG-BLANKING TIMEOUT
vs. TEMPERATURE
MAX4789 toc10
TEMPERATURE (°C)
FLAG-BLANKING TIME (ms)
603510-15
25
30
35
40
45
50
20
-40 85
CURRENT-LIMIT RESPONSE
MAX4789 toc11
40μs/div
VIN
2V/div
VON
2V/div
IOUT
100mA/div
VIN = 3.3V
CIN = 1μF
COUT = 1μF
CURRENT-LIMIT RESPONSE
MAX4789 toc12
20μs/div
VIN = VON
1V/div
IOUT
100mA/div
VIN = VON
CIN = 1μF
COUT = 1μF
Typical Operating Characteristics (continued)
(VIN = 3.3V, TA= +25°C, unless otherwise noted.)
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
_______________________________________________________________________________________ 5
Pin Description
SWITCH TURN-ON TIME RESPONSE
MAX4789 toc14
100μs/div
VON
1V/div
IOUT
10mA/div
CURRENT-LIMIT RESPONSE
(OUT SHORTED TO GND)
MAX4789 toc13
40μs/div
VIN
2V/div
VOUT
2V/div
IOUT
5A/div
CIN = 1μF
COUT = 1μF
Typical Operating Characteristics (continued)
(VIN = 3.3V, TA= +25°C, unless otherwise noted.)
PIN
TDFN-EP
MAX4789
MAX4791
MAX4793
TDFN-EP
MAX4790
MAX4792
MAX4794
5-SOT23
MAX4789
MAX4791
MAX4793
4-SOT143
MAX4789–
MAX4794
NAME
FUNCTION
1—4—
FLAG
Faul t O utp ut. Thi s op en- d r ai n outp ut g oes l ow w hen the d evi ce stays i n
for w ar d or r ever se cur r ent l i m i t for m or e than the b l anki ng ti m e p er i od .
FLAG i s hi g h i m p ed ance w hen a faul t i s not p r esent or w hen O N i s l ow .
2222
GND
Ground
3 3 3 3 ON Active-High Switch On Input. A logic high turns the switch on.
4 1, 4 — — N.C. No Connection. Not internally connected.
5 5 1 4 IN Input. Bypass IN with a 0.1µF ceramic capacitor to ground.
6 6 5 1 OUT Switch Output. Bypass OUT with a 0.1µF ceramic capacitor to ground.
——EP
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.)
FLAG-BLANKING RESPONSE
MAX4789 toc16
4ms/div
FLAG
2V/div
IOUT
100mA/div
VIN
2V/div
VON
2V/div
SWITCH TURN-OFF TIME RESPONSE
MAX4789 toc15
200ns/div
VON
2V/div
IOUT
10mA/div
MAX4789–MAX4794
Detailed Description
The MAX4789–MAX4794 are forward/reverse current-
limited 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 indi-
cate 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 condi-
tion 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 erro-
neous switch operation when the input voltage goes too
low during startup conditions.
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 pre-
vents 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 activat-
ed, it latches FLAG output low and also turns the switch
200mA/250mA/300mA Current-Limit Switches
6 _______________________________________________________________________________________
N
BLANKING TIME
CIRCUITRY
REVERSE CURRENT
DETECTOR
FORWARD CURRENT
DETECTOR
N
+2.0V
FLAG
OUT
IN
ON
GND
MAX4789/MAX4791/
MAX4793 ONLY
LOGIC
AUTO-
RETRY MAX4789–MAX4794
UNDERVOLTAGE
LOCKOUT
Figure 1. Functional Diagram
off. FLAG is an open-drain output transistor and requires
an external pullup resistor from FLAG to IN. During shut-
down (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 fault-
blanking period.
•V
IN 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 cur-
rent limit. During tRETRY, when the switch is off, the cur-
rent through the switch is zero. Instead of observing the
full load current, the switch sees the equivalent load
current times duty cycle or ISUPPLY = ILOAD ✕
tBLANK/(tBLANK + tRETRY). With a typical tBLANK =
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 con-
sistent 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 over-
current condition continues up to the end of the blank-
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 blank-
ing. 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 fea-
ture to protect the devices from overheating. The switch
turns off and FLAG goes low immediately (no fault blank-
ing) when the junction temperature exceeds +150°C.
The switch turns back on when the device temperature
drops approximately 15°C.
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
_______________________________________________________________________________________ 7
ON FAULT SWITCH ON/OFF
SUPPLY CURRENT MODE
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 Latch off
High Current Limit ON during tBLANK period, OFF during tRETRY period for the
MAX4790, MAX4792, and MAX4794; cycle repeats until fault
is removed
See the Autoretry section
Table 1. MAX4789–MAX4794 Switch Truth Table
LOAD
CURRENT
SWITCH
STATUS
tBLANK
OFF
ON
tRETRY
CURRENT
LIMIT
SHORT
CONDITION
REMOVED
tBLANK tBLANK
Figure 2. MAX4790/MAX4792/MAX4794 Autoretry Fault
Blanking Diagram
MAX4789–MAX4794
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 recom-
mended for lower voltage applications.
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
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:
Layout and Thermal Dissipation
To optimize the switch response time to output short-
circuit 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 maxi-
mum 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:
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 possi-
ble 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
PVI t
tt mW
MAX
IN MAX OUT MAX BLANK
RETRY BLANK
=××
+=
__
302
CIt
V
MAX FWD MIN BLANK MIN
IN
<×
__
200mA/250mA/300mA Current-Limit Switches
8 _______________________________________________________________________________________
LOAD
CURRENT
SWITCH
STATUS
ON PIN
VOLTAGE
tBLANK tBLANK
OFF
ON
(a)
(b)
UVLO
LOAD
CURRENT
SWITCH
STATUS
IN PIN
VOLTAGE
OFF
ON
tBLANK tBLANK
FLAG PIN
STATUS
FLAG PIN
STATUS
Figure 3. MAX4789/MAX4791/MAX4793 Latch-Off Fault
Blanking
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
_______________________________________________________________________________________ 9
Selector Guide
PART PIN-
PACKAGE
C U R R EN T
L IM IT ( m A )
F L A G
F U N C T IO N
AUTO-
RETRY
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
GND
N.C.
1OUT
*EP = EXPOSED PAD. CONNECT EP TO GND.
*( ) FOR THE MAX4790, MAX4792, AND MAX4794.
IN
FLAG (N.C.)
MAX4789–
MAX4794
3mm x 3mm TDFN
TOP VIEW
2
3
6
5
4ON *EP
Pin Configurations (continued) Ordering Information (continued)
PART
TEMP RANGE
PIN-
PACKAGE
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 TD FN - E P *
ABQ
MAX4792EUS+T
-40°C to +85°C 4 SOT143
KAFH
MAX4792ETT+
-40°C to +85°C 6 TD FN - E P *
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 TD FN - E P *
ABS
MAX4794EUS+T
-40°C to +85°C 4 SOT143
KAFJ
MAX4794ETT+
-40°C to +85°C 6 TD FN - E P *
ABT
*
EP = Exposed paddle.
/V denotes an automotive qualified part.
+
Denotes a lead-free/RoHS-compliant package.
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
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
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
MAX4789–MAX4794
200mA/250mA/300mA Current-Limit Switches
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.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
2 2/05 Changed package description ⎯
3 10/08 Changed Ordering Information and Package Information. 1, 8–11
