MAX890LESA Maxim Integrated Products, MAX890LESA Datasheet

IC SW MOSFET PWR PCH HSIDE 8SOIC

MAX890LESA

Manufacturer Part Number
MAX890LESA
Description
IC SW MOSFET PWR PCH HSIDE 8SOIC
Manufacturer
Maxim Integrated Products
Type
High Side Switchr
Datasheet

Specifications of MAX890LESA

Number Of Outputs
1
Rds (on)
130 mOhm
Internal Switch(s)
Yes
Current Limit
1.2A
Voltage - Input
2.7 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Case
SOP8
Dc
00+
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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The MAX890L smart, low-voltage, P-channel, MOSFET
power switch is intended for high-side load-switching
applications. This switch operates with inputs from
+2.7V to +5.5V, making it ideal for both +3V and +5V
systems. Internal current-limiting circuitry protects the
input supply against overload. Thermal-overload pro-
tection limits power dissipation and junction tempera-
tures.
The MAX890L’s maximum current limit is 1.2A. The cur-
rent limit through the switch is programmed with a
resistor from SET to ground. The quiescent supply cur-
rent is a low 10µA. When the switch is off, the supply
current decreases to 0.1µA.
The MAX890L is available in an 8-pin SO package.
________________________Applications
19-1146; Rev 3; 3/00
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.
INPUT
1µF
PCMCIA Slots
Access Bus Slots
Portable Equipment
100kΩ
P-Channel Switch with Thermal Shutdown
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
IN
IN
FAULT
GND
MAX890L
General Description
OUT
OUT
SET
ON
1.2A, Current-Limited, High-Side
ON/OFF
R
SET
0.1µF
OUTPUT
____________________________Features
o +2.7V to +5.5V Input Range
o Programmable Current Limit
o Low Quiescent Current
o Thermal Shutdown
o FAULT Indicator Output
o 0.09Ω (typ) On-Resistance
* To order this unit in tape and reel, add (-T) to the end of the part
** Dice are tested at T
number.
MAX890LC/D
MAX890LESA
TOP VIEW
PART*
10µA (typ) at V
0.1µA (typ) with Switch Off
GND
-40°C to +85°C
ON
IN
IN
0°C to +70°C
A
RANGE
1
2
3
4
TEMP.
= +25°C.
IN
Ordering Information
= +3.3V
MAX890L
SO
Pin Configuration
PIN-
PACKAGE
Dice**
8 SO
8
7
6
5
FAULT
OUT
OUT
SET
CURRENT
LIMIT
1.2A
1.2A
1

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MAX890LESA Summary of contents

Page 1

... V 0.1µA (typ) with Switch Off o Thermal Shutdown o FAULT Indicator Output o 0.09Ω (typ) On-Resistance PART* MAX890LC/D MAX890LESA * To order this unit in tape and reel, add (-T) to the end of the part number. ** Dice are tested at T TOP VIEW OUTPUT 0.1µF ...

Page 2

... FAULT Logic Output Low Voltage FAULT Logic Output High Leakage Current Slow-Current-Loop Response Time Fast-Current-Loop Response Time Turn-On Time Turn-Off Time 2 _______________________________________________________________________________________ Operating Temperature Range MAX890LESA ....................................................-40°C to +85°C + 0.3V) Storage Temperature Range ........................... -65°C to +150°C IN Lead Temperature (soldering, 10s) . ...............................+300°C = +25°C.) A CONDITIONS = 5V GND, I ...

Page 3

P-Channel Switch with Thermal Shutdown ELECTRICAL CHARACTERISTICS (V = +3V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER Operating Voltage Quiescent Current Off-Supply Current Off-Switch Current Undervoltage Lockout On-Resistance Current-Limit-Amplifier Threshold Current ...

Page 4

Current-Limited, High-Side P-Channel Switch with Thermal Shutdown __________________________________________Typical Operating Characteristics (T = +25°C, unless otherwise noted.) A QUIESCENT CURRENT vs. INPUT VOLTAGE GND OUT ...

Page 5

P-Channel Switch with Thermal Shutdown ____________________________Typical Operating Characteristics (continued +25°C, unless otherwise noted.) A OUTPUT OVER-LOAD (SLOW LOOP RESPONSE 0V, 0A 2µs/div C = 100µ 0.1µF IN OUT 1V/div, AC-COUPLED ...

Page 6

Current-Limited, High-Side P-Channel Switch with Thermal Shutdown PIN NAME Input. P-channel MOSFET source. Bypass IN with a 1µF capacitor to ground Active-Low Switch On Input. A logic low turns the switch on. 4 GND ...

Page 7

P-Channel Switch with Thermal Shutdown MAX890L SET GND Figure 2. Setting the Current Limit Slow-Loop Response in the Typical Operating Characteristics. Thermal Shutdown The MAX890L features thermal shutdown. The switch turns off when the junction temperature exceeds +135°C. Once the ...

Page 8

... 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. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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