MP5003 Switch Datasheet

MP5003 Datasheet, PDF, Equivalent


Part Number

MP5003

Description

3.3V 1A-3A Programmable Current Limit Switch

Manufacture

MPS

Total Page 13 Pages
Datasheet
Download MP5003 Datasheet


MP5003
The Future of Analog IC Technology
MP5003
3.3V, 1A-3A Programmable Current
Limit Switch with Auto Enable
DESCRIPTION
The MP5003 is a prote ction device designed t o
protect circuitry on t he output (V OUT) from
transients o n the input (VIN). It also protects V IN
from undesired shorts and transients comin g
from the load.
At start up, inrush current is limited by limiting the
slew rate at VOUT. The slew rate is controlled by a
small capacitor at the dv/dt pin. The dv/dt pin has
an internal circuit that allows the customer to float
this pin (no connect) a nd still rece ive a 1.1ms
ramp time at VOUT.
The max l oad at the output (V OUT) is current
limited. This is a ccomplished by utilizing a sense
FET topology. The mag nitude of the current limit
is contro lled by an external resist or connecte d
between the ILIMIT pins.
An internal charge pump drives the gate of the
power device, allowing a very low on-resistance
DMOS power FET of just 44m.
VOUT is protected from V IN being to o low or too
high. Under Voltage L ockout (UVLO) assures
that the inp ut is a bove the minimum operating
threshold, b efore the power device i s turned on.
If V IN goes above the high output t hreshold, th e
output voltage will be limited.
FEATURES
Integrated 44mPower FET
Enable/Fault Pin
Adjustable Slew Rate for Output Voltage
Adjustable Current Limit: 1A-3A
Automatically Startup after Thermal
Protection
Over Voltage Limit
APPLICATIONS
Hot Swap
PC Cards
Cell Phones
Laptops
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN
RLIMIT
EN
Cdv/dt
(Optional)
11
6
VIN
+ILIMIT
VOUT 5
7
MP5003
-ILIMIT
VOUT
4
8 Enable/Fault VOUT 3
9 dv/dt
VOUT 2
10 GND
VOUT 1
VOUT
MP5003 Rev. 0.921
2/29/2012
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1
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MP5003
MP5003 – 3.3V, 1A-3A PROGRAMMABLE CURRENT LIMIT SWITCH WITH AUTO ENABLE
Part Number*
MP5003EQ
ORDERING INFORMATION
Package
QFN10 (3x3)
Top Marking
7M
Free Air Temperature (TA)
-20C to +85C
* For Tape & Reel, add suffix –Z (e.g. MP5003EQ–Z);
For RoHS Compliant Packaging, add suffix –LF (e.g. MP5003EQ–LF–Z)
PACKAGE REFERENCE
TOP VIEW
VOUT
VOUT
VOUT
VOUT
VOUT
1 10 GND
2 EXPOSED 9 dv/dt
3 PAD 8 ENABLE/FAULT
VIN
4
7 -ILIMIT
5 6 +ILIMIT
ABSOLUTE MAXIMUM RATINGS (1)
VIN, VOUT, +ILIMIT, -ILIMIT ..................................22V
dv/dt, ENABLE/FAULT .................................. 6V
Continuous Power Dissipation (TA=+25oC) (2)
............................................................. 2.5W
Storage Temperature............... -65°C to +155C
Junction Temperature…..……..-20C to +150C
Recommended Operating Conditions
Input Voltage Operating Range……….2.5V to 6V
Operating Junct.Temp(TJ)……..-20C to +125C
Thermal Resistance (3) θJA θJC
QFN10 ....................................50 ...... 12 ... C/W
Notes:
1) Exceeding these ratings may damage the device..
2) The maximum allowable power dissipation is a fun ction of the
maximum junction temperatu re T J(MAX) the junction-to-
ambient thermal resistance JAand the ambient temperature
TA, the maximum allow able po wer dissipation at an y ambien t
temperature is calculated using: PD(MAX)=(TJ(MAX)-TA)/ JA.
Exceeding the maximum allo wable po wer dissipation w ill
cause ex cessive die temperature, and the regulator will go
into thermal sh utdown. Inte rnal thermal shutdo wn circuitr y
protects the device from permanent damage.
Reduce 0.2 W atts for ever y 10oC am bient t emperature
increasing
3) Measured on JESD51-7 4-layer board.
MP5003 Rev. 0.921
2/29/2012
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
2


Features MP5003 3.3V, 1A-3A Programmable Current Limit Switch with Auto Enable The Futur e of Analog IC Technology DESCRIPTION The MP5003 is a prote ction device desi gned t o protect circuitry on t he outp ut (V OUT) from transients o n the inpu t (VIN). It also protects V IN from und esired shorts and transients comin g fr om the load. At start up, inrush curren t is limited by limiting the slew rate at VOUT. The slew rate is controlled by a small capacitor at the dv/dt pin. Th e dv/dt pin has an internal circuit tha t allows the customer to float this pin (no connect) a nd still rece ive a 1.1 ms ramp time at VOUT. The max l oad at the output (V OUT) is current limited. This is a ccomplished by utilizing a se nse FET topology. The mag nitude of the current limit is contro lled by an ext ernal resist or connecte d between the ILIMIT pins. An internal charge pump dr ives the gate of the power device, allo wing a very low on-resistance DMOS powe r FET of just 44mΩ. VOUT is protected from V IN being to o low .
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