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eFuse. TPS25921 Datasheet

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eFuse. TPS25921 Datasheet






TPS25921 eFuse. Datasheet pdf. Equivalent




TPS25921 eFuse. Datasheet pdf. Equivalent





Part

TPS25921

Description

eFuse



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS25921A, TPS25921L SLVSCE1 C – AUGUST 2014 – REVISED NOVEMBER 2015 TPS25921x 4.5V - 18V eFuse with Pr ecise Current Limit and Over Voltage Pr otection 1 Features •1 4.5 V – 18 V Operating Voltage, 20 V (Max) • 90 mΩ RDS(ON) (Typical) • 0.4 A to 1.6 A Adjustable Current Limit • ±2.
Manufacture

Texas Instruments

Datasheet
Download TPS25921 Datasheet


Texas Instruments TPS25921

TPS25921; % Accurate ILIMIT at 1A at 25°C • ±3 % Overvoltage, Undervoltage Threshold Programmable dVO/dt Control • Faul t Output for Thermal Shutdown, UVLO and OVP • -40°C to 125°C Junction Temp erature Range • Auto-Retry and Latch- Off Versions • UL2367 Recognized - Fi le No. E169910 • UL60950 - Safe durin g Single Point Failure Test 2 Applicati ons • White Goods, Appliances • Set .


Texas Instruments TPS25921

Top Boxes, DVD and Gaming Consoles • H DD and SSD drives • Smart Meters, Gas Analyzers • Smart Load Switch • US B Switch • Adapter Power Devices 3 D escription The TPS25921 is a compact, f eature rich eFuse with a full suite of protection functions. The wide operatin g voltage allows control of many popula r DC buses. The precise ±2% current li mit, at room temperature, pro.


Texas Instruments TPS25921

vides excellent accuracy making the TPS2 5921 well suited for many system protec tion applications. Load, source and dev ice protection are provided with multip le programmable features including over current, overvoltage and undervoltage. 3% threshold accuracy for UV and OV, en sures tight supervision of bus voltages , eliminating the need for supervisor c ircuitry. Fault fl.

Part

TPS25921

Description

eFuse



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS25921A, TPS25921L SLVSCE1 C – AUGUST 2014 – REVISED NOVEMBER 2015 TPS25921x 4.5V - 18V eFuse with Pr ecise Current Limit and Over Voltage Pr otection 1 Features •1 4.5 V – 18 V Operating Voltage, 20 V (Max) • 90 mΩ RDS(ON) (Typical) • 0.4 A to 1.6 A Adjustable Current Limit • ±2.
Manufacture

Texas Instruments

Datasheet
Download TPS25921 Datasheet




 TPS25921
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS25921A, TPS25921L
SLVSCE1C – AUGUST 2014 – REVISED NOVEMBER 2015
TPS25921x 4.5V - 18V eFuse with Precise Current Limit and Over Voltage Protection
1 Features
1 4.5 V – 18 V Operating Voltage, 20 V (Max)
• 90 mΩ RDS(ON) (Typical)
• 0.4 A to 1.6 A Adjustable Current Limit
• ±2% Accurate ILIMIT at 1A at 25°C
• ±3% Overvoltage, Undervoltage Threshold
• Programmable dVO/dt Control
• Fault Output for Thermal Shutdown, UVLO and
OVP
• -40°C to 125°C Junction Temperature Range
• Auto-Retry and Latch-Off Versions
• UL2367 Recognized - File No. E169910
• UL60950 - Safe during Single Point Failure Test
2 Applications
• White Goods, Appliances
• Set Top Boxes, DVD and Gaming Consoles
• HDD and SSD drives
• Smart Meters, Gas Analyzers
• Smart Load Switch
• USB Switch
• Adapter Power Devices
3 Description
The TPS25921 is a compact, feature rich eFuse with
a full suite of protection functions. The wide operating
voltage allows control of many popular DC buses.
The precise ±2% current limit, at room temperature,
provides excellent accuracy making the TPS25921
well suited for many system protection applications.
Load, source and device protection are provided with
multiple programmable features including overcurrent,
overvoltage and undervoltage. 3% threshold accuracy
for UV and OV, ensures tight supervision of bus
voltages, eliminating the need for supervisor circuitry.
Fault flag output (FLT) is provided for system status
monitoring and down stream load control.
For hot-plug-in boards, TPS25921 provides in-rush
current control and programmable output ramp-rate.
Output ramp rate is programmable using a capacitor
at soft-start (SS) pin, for maximum design flexibility.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS25921A
TPS25921L
SOIC
4.90mm x 3.91mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Application Schematic
V(IN) 4.5 to 18 V
IN
OUT
Load
12V Short Circuit Response
90mO
ENUV
FLTb
V(OUT)
OVP
FLT
SS
ILIM
V(IN)
GND TPS25921x
I_IN
TIME = 20 ms/div
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




 TPS25921
TPS25921A, TPS25921L
SLVSCE1C – AUGUST 2014 – REVISED NOVEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Application Schematic .......................................... 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 3
7.1 Absolute Maximum Ratings ...................................... 3
7.2 ESD Ratings ............................................................ 3
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Characteristics ........................................... 4
7.5 Electrical Characteristics........................................... 5
7.6 Timing Requirements ................................................ 6
7.7 Typical Characteristics .............................................. 7
8 Parametric Measurement Information ............... 11
9 Detailed Description ............................................ 12
9.1 Overview ................................................................. 12
9.2 Functional Block Diagram ....................................... 12
9.3 Feature Description................................................. 13
9.4 Device Functional Modes........................................ 17
10 Applications and Implementation...................... 18
10.1 Application Information.......................................... 18
10.2 Typical Application ................................................ 18
10.3 System Examples ................................................. 25
11 Power Supply Recommendations ..................... 28
11.1 Transient Protection .............................................. 28
11.2 Output Short-Circuit Measurements ..................... 29
12 Layout................................................................... 30
12.1 Layout Guidelines ................................................. 30
12.2 Layout Example .................................................... 30
13 Device and Documentation Support ................. 31
13.1 Related Links ........................................................ 31
13.2 Community Resources.......................................... 31
13.3 Trademarks ........................................................... 31
13.4 Electrostatic Discharge Caution ............................ 31
13.5 Glossary ................................................................ 31
14 Mechanical, Packaging, and Orderable
Information ........................................................... 31
5 Revision History
Changes from Revision B (August 2015) to Revision C
Page
• Changed Equation 2 From: 0.07 To: 70 pF, and added text "where C(ss) is in Farad" ....................................................... 14
• Changed Equation 21 From: (1 + 0.07) To: (1 x10-9 + 70 x 10-12) ....................................................................................... 22
• Changed Equation 26 From: (4.7 + 0.07) To: (4.7 x10-9 + 70 x 10-12) ................................................................................. 22
Changes from Revision A (March 2015) to Revision B
Page
• Changed tss in Timing Requirements From: V(OUT) = 11.7 V To V(OUT) = 11 V and C(SS) = 1 nF To: C(SS) = 1.2 nF .............. 6
Changes from Original (August 2014) to Revision A
Page
• Changed Features From: UL2367 Recognition Pending To: UL2367 Recognized - File No. E169910 ............................... 1
• Moved the Storage temperature range From: Handling Ratingstable To : Absolute Maximum Ratings .............................. 3
• Changed the Handling Ratings table To: ESD Ratings ......................................................................................................... 3
• Changed Equation 31 From: V(IN) x I(LOAD) To: V(IN) + I(LOAD). ............................................................................................... 28
2
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Copyright © 2014–2015, Texas Instruments Incorporated
Product Folder Links: TPS25921A TPS25921L




 TPS25921
www.ti.com
6 Pin Configuration and Functions
GND
SS
ENUV
IN
D Package
8-Pin SOIC
Top View
1
8
2
7
3
6
4
5
TPS25921A, TPS25921L
SLVSCE1C – AUGUST 2014 – REVISED NOVEMBER 2015
OVP
ILIM
FLT
OUT
NAME
GND
SS
ENUV
IN
OUT
FLT
ILIM
OVP
NUMBER
1
2
3
4
5
6
7
8
Pin Functions
DESCRIPTION
Ground.
A capacitor from this pin to GND sets the ramp rate of output voltage at device turn-on.
Input for setting programmable undervoltage lockout threshold. An undervoltage event will open internal FET and
assert FLT to indicate power-failure. When pulled to GND, resets the thermal fault latch in TPS25921L.
Power Input and supply voltage of the device.
Power Output of the device.
Fault event indicator, goes low to indicate fault condition due to Undervoltage, Overvoltage, and Thermal shutdown
event. A nuisance fast trip does not trigger fault. It is an open drain output.
A resistor from this pin to GND will set the overload and short circuit limit.
Input for setting programmable overvoltage protection threshold. An overvoltage event will open the internal FET and
assert FLT to indicate overvoltage.
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
IN, OUT, ENUV, OVP, FLT
Input voltage range
IN (10 ms Transient)
ILIM, SS
SS
Sink current
FLT
Source current
ILIM, SS, FLT
Maximum junction temperature, TJ
Storage temperature range, Tstg
VALUE (2)
MIN
MAX
–0.3
20
22
–0.3
7
5
100
Internally Limited
Internally Limited
-65
150
UNIT
V
mA
mA
°C
°C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any conditions beyond those indicated under recommended operating conditions
is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values, except differential voltages, are with respect to network ground terminal.
7.2 ESD Ratings
V(ESD) Electrostatic discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)
Charged device model (CDM), per JEDEC specification JESD22-
C101 (2)
VALUE
±2000
±500
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
UNIT
V
Copyright © 2014–2015, Texas Instruments Incorporated
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3
Product Folder Links: TPS25921A TPS25921L



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