MAX4838 Maxim, MAX4838 Datasheet
MAX4838
Manufacturer Part Number
MAX4838
Description
Overvoltage Protection Controllers with Status FLAG
Manufacturer
Maxim
Datasheet
1.MAX4838.pdf
(10 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX4838EXT
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
MAX4838EXT+T
Manufacturer:
MAXIM
Quantity:
6 369
Company:
Part Number:
MAX4838EXT-T
Manufacturer:
AD
Quantity:
402
The MAX4838–MAX4841 are overvoltage protection ICs
that protect low-voltage systems against voltages of up
to 28V. If the input voltage exceeds the overvoltage trip
level, the MAX4838–MAX4841 turn off the low-cost
external N-channel FET(s) to prevent damage to the
protected components. An internal charge pump elimi-
nates the need for external capacitors and drives the
FET gate for a simple, robust solution.
The MAX4838/MAX4839 have a 7.4V overvoltage
threshold, and the MAX4840/MAX4841 have a 5.8V
overvoltage threshold. All devices have an undervolt-
age lockout threshold of 3.25V. In addition to the single
FET configuration, the devices can be configured with
back-to-back external FETs to prevent currents from
being back-driven into the adapter.
On power-up, the device waits for 50ms before driving
GATE high. FLAG is held low for an additional 50ms
after GATE goes high before deasserting. The
MAX4838/MAX4840 have an open-drain FLAG output,
and the MAX4839/MAX4841 have a push-pull FLAG
output. The FLAG output asserts immediately to an
overvoltage fault.
Additional features include a 15kV ESD-protected input
(when bypassed with a 1µF capacitor) and a shutdown
pin (EN) to turn off the device (MAX4838/MAX4840).
All devices are offered in a small 6-pin SC70 package
and are specified for operation from -40°C to +85°C.
19-3044; Rev 0; 10/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX4838EXT-T
MAX4839EXT-T
MAX4840EXT-T
MAX4841EXT-T
PART
Cell Phones
Digital Still Cameras
PDAs and Palmtop Devices
MP3 Players
THRESHOLD
________________________________________________________________ Maxim Integrated Products
Overvoltage Protection Controllers with
UVLO
3.25
3.25
3.25
3.25
(V)
General Description
LEVEL
TRIP
OV
Selector Guide
(V)
7.4
7.4
5.8
5.8
Applications
INPUT
Yes
Yes
EN
No
No
Open-Drain
Open-Drain
OUTPUT
Push-Pull
Push-Pull
FLAG
o Overvoltage Protection Up to 28V
o Preset 7.4V or 5.8V Overvoltage Trip Level
o Drive Low-Cost NMOS FET
o Internal 50ms Startup Delay
o Internal Charge Pump
o Undervoltage Lockout
o 15kV ESD-Protected Input
o Voltage Fault FLAG Indicator
o 6-Pin SC70 Package
Pin Configuration appears at end of data sheet.
MAX4838EXT-T
MAX4839EXT-T
MAX4840EXT-T
MAX4841EXT-T
+1.2V TO +28V
PART
INPUT
1µF
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
1
6
2
Ordering Information
IN
EN
GND
MAX4838–
MAX4841
Status FLAG
FLAG
GATE
PIN-
PACKAGE
6 SC70-6
6 SC70-6
6 SC70-6
6 SC70-6
4
3
NOTE: EN AND PULLUP
RESISTOR ON MAX4838/
MAX4840 ONLY.
Features
NMOS
V
OUTPUT
IO
MARK
ABW
TOP
ABY
ABX
ABZ
1
Related parts for MAX4838
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
The DS5250 is a highly secure, four clocks-per-machine cycle, 100% 8051-instruction-set-compatible microprocessor in Maxim's secure microcontroller family
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
The MAX9263/MAX9264 chipset extends Maxim's gigabit multimedia serial link (GMSL) technology to include high-bandwidth digital content protection (HDCP) encryption for content protection of DVD and Blu-ray™ video and audio data
Manufacturer:
Maxim
Part Number:
Description:
The Maxim MXL1016 (10ns, typ) high-speed, complementary-output comparator is designed specifically to
interface directly to TTL logic while operating from
either a dual ±5V supply or a single +5V supply
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's DG300–DG303 and DG300A–DG303A CMOS dual and quad analog switches combine low power operation with fast switching times and superior DC and AC switch characteristics
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's DG300–DG303 and DG300A–DG303A CMOS dual and quad analog switches combine low power operation with fast switching times and superior DC and AC switch characteristics
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's DG300–DG303 and DG300A–DG303A CMOS dual and quad analog switches combine low power operation with fast switching times and superior DC and AC switch characteristics
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's DG300–DG303 and DG300A–DG303A CMOS dual and quad analog switches combine low power operation with fast switching times and superior DC and AC switch characteristics
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's redesigned DG401/DG403/DG405 analog switches now feature guaranteed low on-resistance matching between switches (2Ω max) and guaranteed on-resistance flatness over the signal range (3Ω max)
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's redesigned DG401/DG403/DG405 analog switches now feature guaranteed low on-resistance matching between switches (2Ω max) and guaranteed on-resistance flatness over the signal range (3Ω max)
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's redesigned DG401/DG403/DG405 analog switches now feature guaranteed low on-resistance matching between switches (2Ω max) and guaranteed on-resistance flatness over the signal range (3Ω max)
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's redesigned DG406 and DG407 CMOS analog multiplexers now feature guaranteed matching between channels (8Ω max) and flatness over the specified signal range (9Ω max)
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's redesigned DG406 and DG407 CMOS analog multiplexers now feature guaranteed matching between channels (8Ω max) and flatness over the specified signal range (9Ω max)
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's redesigned DG408 and DG409 CMOS analog multiplexers now feature guaranteed matching between channels (8Ω max) and flatness over the specified signal range (9Ω max)
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's redesigned DG408 and DG409 CMOS analog multiplexers now feature guaranteed matching between channels (8Ω max) and flatness over the specified signal range (9Ω max)
Manufacturer:
Maxim
Datasheet:
Part Number:
Description:
Maxim's redesigned DG411/DG412/DG413 analog switches now feature low on-resistance matching between switches (3Ω max) and guaranteed on-resistance flatness over the signal range (Δ4Ω max)
Manufacturer:
Maxim
Datasheet: