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AP2553 Datasheet

(AP2552x / AP2553x) PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCHES

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AP2553 pdf
AP2552/ AP2553/ AP2552A/ AP2553A
PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCHES
Description
Pin Assignments
The AP2552/53and AP2552A/53A are single channel precision
adjustable current-limited switches optimized for the applications
require precision current limiting or to provide up to 2.1A of
continuous load current during heavy loads/short circuits. These
devices offer a programmable current-limit threshold between 75mA
and 2.35A (typ) via an external resistor. Current limit accuracy ±6%
can be achieved at high current-limit settings. The rise and fall times
are controlled to minimize current surges during turn on/off.
The devices have fast short-circuit response timefor improved overall
system robustness. They provide a complete protection solution for
applications subject to heavy capacitive loads and the prospect of
short circuit, offering reverse current blocking and limiting, over-
current, over-temperature and short-circuit protection, as well as
controlled rise time and under-voltage lockout functionality. A
7ms deglitch capability on the open-drain Flag output prevents false
over-current reporting and does not require any external components.
AP2552/53 limits the output current to a safe level when the output
current exceeds current-limit threshold.
(Top View)
OUT
ILIM
FAULT
16
2 PAD 5
34
IN
GND
EN
IN
GND
EN
Features
U-DFN2020C-6
(Top View)
16
25
34
SOT26
OUT
ILIM
FAULT
AP2552A/53A provides latch-off function during over-current or
reverse-voltage conditions.
All devices are available in SOT26 and U-DFN2020C-6 packages.
Applications
Set-Top-Boxes
LCD TVs & Monitors
Residential Gateways
Laptops, Desktops, Servers, e-Readers, Printers, Docking
Stations, HUBs
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Up to 2.1A maximum load current
Accurate adjustable current limit, 75mA - 2350mA
±6% accurate adjustable current limit, 1.61A with RLIM = 15k
Constant-current (AP2552/53) during over-current
Output latch-off (AP2552A/53A) at over-current
Fast short-circuit response time: 2µs (typ)
Reverse current blocking during shutdown and reverse current
limiting during enable
Operating range: 2.7V – 5.5V
Built-in soft-start with 3ms typical rise time
Over-current , output over-voltage and thermal protection
Fault report (FAULT) with blanking time
ESD protection: 2kV HBM, 500V CDM
Active low (AP2552/52A) or active high (AP2553/53A) enable
Ambient temperature range: -40ºC to +85°C
SOT26 and DFN2020-6 package: Available in “Green”Molding
Compound (No Br, Sb)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
15kV ESD Protection per IEC 61000-4-2 (with external
capacitance)
UL Recognized, File Number (to be completed)
IEC60950-1 CB Scheme Certified (to be completed)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AP2552/AP2553/AP2552A/AP2553A
Document number: DS35404 Rev. 5 - 2
1 of 16
www.diodes.com
December 2012
© Diodes Incorporated
datasheet pdf - http://www.DataSheet4U.net/


Diodes Semiconductor Electronic Components Datasheet

AP2553 Datasheet

(AP2552x / AP2553x) PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCHES

No Preview Available !

AP2553 pdf
Typical Applications Circuit
AP2552/ AP2553/ AP2552A/ AP2553A
120µF Output Capacitance is a Requirement of USB
Available Options
Part Number
AP2552
AP2553
AP2552A
AP2553A
Channel
1
1
1
1
Enable Pin (EN)
Active Low
Active High
Active Low
Active High
Recommended Maximum
Continuous Load Current (A)
2.1
2.1
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Current-Limit
Protection
Constant-Current
Latch-Off
Package
U-DFN2020C-6
SOT26
U-DFN2020C-6
SOT26
Pin Descriptions
Pin
Name
Pin Number
AP2552W6-7 AP2553W6-7 AP2552FDCG-7 AP2553FDCG-7
I/O
Function
IN 1
1
6
6
I
Input, connect a 0.1µF or greater ceramic capacitor from
IN to GND as close to IC as possible.
GND
2
2
5
5 — Ground, connect to external exposed pad.
EN
EN
FAULT
ILIM
3
4
5
3
4
5
4
3
2
— I Enable input, logic low turns on power switch.
4 I Enable input, logic high turns on power switch.
3
O
Active-low open-drain output, asserted during over-
current, over-temperature, or reverse-voltage conditions.
2
O
Use external resistor to set current-limit threshold;
recommended 10kRLIM232k.
OUT
6
6
1
1 O Output
Exposed
Pad
Pad
Pad
No internal connection; recommend to connect to GND
externally for improved power dissipation.
AP2552/AP2553/AP2552A/AP2553A
Document number: DS35404 Rev. 5 - 2
2 of 16
www.diodes.com
December 2012
© Diodes Incorporated
datasheet pdf - http://www.DataSheet4U.net/


Part Number AP2553
Description (AP2552x / AP2553x) PRECISION ADJUSTABLE CURRENT-LIMITED POWER SWITCHES
Maker Diodes
Total Page 16 Pages
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