MAX4828ELT-T Maxim Integrated, MAX4828ELT-T Datasheet

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MAX4828ELT-T

Manufacturer Part Number
MAX4828ELT-T
Description
Power Switch ICs - Power Distribution
Manufacturer
Maxim Integrated
Datasheet
1.MAX4831ELT-T.pdf (11 pages)

Specifications of MAX4828ELT-T

Number Of Outputs
1
Operating Supply Voltage
2.3 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
UDFN-6
Minimum Operating Temperature
- 40 C
The MAX4826–MAX4831 family of switches has internal
current limiting to prevent host devices from being
damaged due to faulty load conditions. These analog
switches have a low 0.7Ω on-resistance and operate
from a +2.3V to +5.5V input voltage range. These
devices are available with guaranteed 50mA and
100mA current limits, making them ideal for load-
switching applications. In addition to the current-limit
fault flag (FFLG), an open-drain no-load flag indicator
(NOLD) notifies the system when the current through
the switch is less than 10mA (MAX4826–MAX4829), or
5mA (MAX4830/MAX4831).
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 MAX4826/MAX4828/MAX4830 enter a latchoff state
where the switch is turned off, and FFLG is issued to
the microprocessor. The switch can be turned on again
by cycling the power or ON.
The MAX4827/MAX4829/MAX4831 have an autoretry
feature where the switch turns off after the blanking
time, and then continuously checks to see if the over-
load condition is present. The current-limit fault flag
(FFLG) is issued and remains low until after the fault
condition is removed. The switch remains on after the
overload condition disappears.
The MAX4826–MAX4831 operate over the extended
-40°C to +85°C temperature range, and are available in a
tiny space-saving, 1mm x 1.5mm, 6-pin µDFN package.
19-3672; Rev 1; 8/09
Note: All devices operate over the -40°C to +85°C operating range.
T = Tape and reel.
*Future product—contact factory for availability.
/V denotes an automotive qualified part.
Pin Configuration appears at end of data sheet.
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.
MAX4826ELT+T
MAX4827ELT+T*
MAX4828ELT+T*
MAX4829ELT+T
MAX4830ELT+T
MAX4830ELT/V+T
MAX4831ELT+T*
PART
50mA/100mA Current-Limit Switches with
________________________________________________________________ Maxim Integrated Products
PIN-PACKAGE
6 μDFN
6 μDFN
6 μDFN
6 μDFN
6 μDFN
6 μDFN
6 μDFN
General Description
MIN FULL-LOAD
LIMIT
(mA)
100
100
50
50
50
50
50
MAX NO-LOAD
Ordering Information/Selector Guide
LIMIT
(mA)
♦ Guaranteed Current Limit: 50mA, 100mA
♦ Thermal Shutdown Protection
♦ Reverse-Current Protection
♦ 0.7Ω On-Resistance (MAX4826–MAX4831)
♦ 14ms Guaranteed Blanking Time
♦ Fault Flag (FFLG)
♦ No-Load Flag (NOLD)
♦ 65µA Supply Current
♦ 8µA Latchoff Current
♦ 0.01µA Shutdown Current
♦ +2.3V to +5.5V Supply Range
♦ Undervoltage Lockout
♦ Fast Current-Limit Response Time
♦ 6-Pin µDFN Package (1mm x 1.5mm)
10
10
10
10
NO-LOAD Flag in µDFN
5
5
5
GPS Systems
Cell Phones
Digital Still Cameras
PDAs and Palmtop Devices
MP3 Players
ON-RESISTANCE
T
A
= +25°C
( )
1
1
1
1
2
2
2
Autoretry
Autoretry
Autoretry
Latchoff
Latchoff
Latchoff
Latchoff
MODE
Applications
Features
MARK
TOP
AM
AK
AN
AO
AL
OX
AP
1

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MAX4828ELT-T Summary of contents

Page 1

... The MAX4826–MAX4831 operate over the extended -40°C to +85°C temperature range, and are available in a tiny space-saving, 1mm x 1.5mm, 6-pin µDFN package. PART PIN-PACKAGE MAX4826ELT+T 6 μDFN MAX4827ELT+T* 6 μDFN MAX4828ELT+T* 6 μDFN MAX4829ELT+T 6 μDFN MAX4830ELT+T 6 μDFN MAX4830ELT/V+T 6 μDFN MAX4831ELT+T* 6 μDFN Note: All devices operate over the -40° ...

Page 2

Current-Limit Switches with NO-LOAD Flag in µDFN ABSOLUTE MAXIMUM RATINGS IN, ON, FFLG, NOLD, OUT to GND .........................-0.3V to +6V OUT Short Circuit to GND .................................Internally Limited Continuous Power Dissipation (T = +70°C) A 6-Pin µDFN (derate 2.1mW/°C above ...

Page 3

Current-Limit Switches with ELECTRICAL CHARACTERISTICS (continued +2.3V to +5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL FFLG, NOLD Output-High Leakage Current Thermal Shutdown Thermal-Shutdown Hysterisis DYNAMIC Turn-On ...

Page 4

Current-Limit Switches with NO-LOAD Flag in µDFN (V = +3.3V +25°C, unless otherwise noted SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 3.3V IN 0.001 0.0001 -40 -15 ...

Page 5

Current-Limit Switches with (V = +3.3V +25°C, unless otherwise noted CURRENT-LIMIT RESPONSE GND OUT 40μs/div CURRENT-LIMIT RESPONSE (OUT SHORTED TO GND) 40μs/div SWITCH TURN-OFF-TIME RESPONSE 100ns/div _______________________________________________________________________________________ NO-LOAD Flag ...

Page 6

Current-Limit Switches with NO-LOAD Flag in µDFN PIN NAME 1 IN Input. Bypass IN with a 0.1µF ceramic capacitor to ground. 2 GND Ground 3 OUT Switch Output. Bypass OUT with a 0.1µF capacitor to ground Current-Limit Fault Output. ...

Page 7

Current-Limit Switches with V IN NO-LOAD V ON THRESHOLD LOAD CURRENT 60μs NOLD STATUS Figure 1. MAX4826–MAX4831 No-Load Flag Response The MAX4826–MAX4831 feature a current-limit fault output, FFLG. Whenever a current-limit fault is activat- ed, FFLG goes low and ...

Page 8

Current-Limit Switches with NO-LOAD Flag in µDFN before t has elapsed. A retry time delay, t BLANK is started immediately after t BLANK during that time the switch is latched off. At the end the switch ...

Page 9

Current-Limit Switches with Pin Configuration TOP VIEW OF BOTTOM LEADS ON NOLD FFLG MAX4826– MAX4831 GND OUT μDFN CURRENT < 5mA DETECTOR (MAX4830/MAX4831) CURRENT < 10mA DETECTOR (MAX4826–MAX4829) NOLD N GND IN ...

Page 10

Current-Limit Switches with NO-LOAD Flag in µDFN Chip Information PROCESS: BiCMOS 10 ______________________________________________________________________________________ Package Information For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates ...

Page 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 © 2009 Maxim Integrated Products NO-LOAD Flag in µ ...

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