STHS2377L STMicroelectronics, STHS2377L Datasheet

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STHS2377L

Manufacturer Part Number
STHS2377L
Description
IEEE 802.3af PoE Powered Device (PD) interface controller
Manufacturer
STMicroelectronics
Datasheet
www.datasheet4u.com
Features
Table 1.
July 2007
STHS2375A
STHS2375L
STHS2376A
STHS2376L
STHS2377A
STHS2377L
IEEE 802.3af-compliant interface for Powered
Devices (PDs)
Integrated 100V, 500mA power MOSFET
Resistor-programmable inrush current limit
Normal operation current limit 460mA
External 25k signature resistor
Resistor-programmable classification current
(Class 0-4)
Power Good output (active-high), open drain
Undervoltage Lockout (UVLO) - standard,
programmable, and legacy (see
Thermal overload protection
Latch (L) or auto-retry (A) after hard current
overload or repetitive thermal overload
Industrial temperature range: –40 to +85°C
8-pin SO and 8-pin TSSOP packages
RoHS compliant
Order code
IEEE 802.3af PoE Powered Device (PD) interface controller
Device options
resistor (1%)
STHS2375A, STHS2375L, STHS2376A,
signature
External
24.9k
24.9k
24.9k
24.9k
24.9k
24.9k
STHS2376L, STHS2377A, STHS2377L
Table
Programmable
Programmable
Standard
Standard
1)
Legacy
Legacy
UVLO
Rev 4
Applications
threshold,
Voice over IP (VOIP) phones
Web cameras
WLAN access points
Internet appliances
POS terminals
RFID readers
rising (V)
UVLO
39.3
39.3
2.49
2.49
35.1
35.1
TSSOP8 (DW)
threshold,
falling (V)
SO8 (M)
UVLO
30.5
30.5
1.93
1.93
30.5
30.5
8
1
Protection
mode
Latch
Latch
Latch
Auto
Auto
Auto
www.st.com
1/20
1

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STHS2377L Summary of contents

Page 1

... SO and 8-pin TSSOP packages ■ RoHS compliant Table 1. Device options Order code resistor (1%) STHS2375A STHS2375L STHS2376A STHS2376L STHS2377A STHS2377L July 2007 STHS2375A, STHS2375L, STHS2376A, STHS2376L, STHS2377A, STHS2377L Applications ■ Table 1) ■ ■ ■ ■ ■ External signature UVLO 24.9k Standard 24.9k Standard 24 ...

Page 2

Contents Contents 1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

STHS237x List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

List of tables List of tables Table 1. Device options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 5

... RJ-45 socket can routinely see high peak voltages in excess SS of 100V strongly recommended that board designers protect the PD device with a transient voltage suppressor, such as the SMAJ58A (available from STMicroelectronics), connected between the V The IEEE802.3af-compliant interface includes the basic PD Detection and Classification functions, whereas the 'Hot Swap' functions include other basic features, such as Inrush Current Limiting, Undervoltage Lockout (UVLO), and Thermal Overload Protection ...

Page 6

Summary description Figure 1. www.datasheet4u.com 1. STHS2376A/L devices only. Table 2. Pin STHS2376A/L devices only, for other part types No Connect. Figure 2. Figure 3. 6/20 Logic diagram V UVLO (1) ...

Page 7

STHS237x 1.1 Pin descriptions 1.1.1 Current limit (I Connect a resistor between 000/R LIM www.datasheet4u.com R = 178k ILIM open or connect to V 1.1.2 Classification (CLASS) Connect a Classification resistor between this pin and V ...

Page 8

Summary description Table 3. Class 0 1 www.datasheet4u.com Class 4 is currently reserved and should not be used. Figure 4. RJ-45 TX Pair Note: This configuration uses either data wires or spare wires for DC power. ...

Page 9

STHS237x Figure www.datasheet4u.com (1) UVLO I LIM STHS2376A/L devices only. The UVLO comparator is connected directly to the UVLO input pin instead of the internal UVLO divider. For all other devices, pin 7 is ...

Page 10

Summary description Figure www.datasheet4u.com UVLO (1) I LIM STHS2376A/L devices only. The UVLO comparator is connected directly to the UVLO input pin instead of the internal UVLO divider. For all other devices, pin 7 ...

Page 11

... Operating sections of www.datasheet4u.com this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Over the full operating temperature range, unless otherwise noted. Voltages are referenced to the V pin ...

Page 12

Electrical parameters STHS237xA, STHS237xL 3 Electrical parameters STHS237xA, STHS237xL Specifications common for all the STHS237xA/L product family unless otherwise noted 48V www.datasheet4u.com otherwise noted, typical values at 25°C. For the STHS2376x V and V UVLO Positive ...

Page 13

STHS237x Table 6. DC characteristics Symbol Parameter Detection Offset current www.datasheet4u.com Sleep current I DET pin leakage current V IL(DET) I Detection current DET Classification I Classification current CLASS Classification lower V CL(ON) threshold Classification upper V CU(OFF) threshold V ...

Page 14

Electrical parameters STHS237xA, STHS237xL Table 6. DC characteristics (continued) Symbol Parameter PG deglitch www.datasheet4u.com V Output low voltage PG(OL pin leakage current OL(PG) Undervoltage lockout (UVLO) V UVLO(R) UVLO Thresholds, V UVLO(F) STHS2375x V UVLO(H) V UVL(R) UVLO ...

Page 15

STHS237x 4 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the ...

Page 16

Package mechanical data Figure 7. www.datasheet4u.com Note: Drawing is not to scale. Table 7. Symb ddd 16/20 SO8 – 8-lead plastic small outline, 150 mils width, package outline A2 ...

Page 17

STHS237x Figure 8. www.datasheet4u.com Note: Drawing is not to scale. Table 8. Symb TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package outline ...

Page 18

Part numbering 5 Part numbering Table 9. Example: www.datasheet4u.com Device type STHS Product options 2375A = Standard UVLO, Auto 2375L = Standard UVLO, Latch 2376A = Programmable UVLO, Auto 2376L = Programmable UVLO, Latch 2377A = Legacy UVLO, Auto 2377L ...

Page 19

STHS237x 6 Revision history Table 10. Date www.datasheet4u.com 11-Aug-2006 19-Dec-2006 24-May-2007 26-Jul-2007 Document revision history Revision 1 Initial release. 2 Updated Features 3 Formatting changes, updated Document status upgraded to full datasheet, updated cover 4 page and Table Revision history ...

Page 20

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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