STHS2375A Datasheet, PDF (1/20 Pages) STMicroelectronics – IEEE 802.3af PoE Powered Device (PD) interface controller

STHS2375A, STHS2375L, STHS2376A,
STHS2376L, STHS2377A, STHS2377L
IEEE 802.3af PoE Powered Device (PD) interface controller
Features
■ 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 25kΩ signature resistor
■ Resistor-programmable classification current
(Class 0-4)
■ Power Good output (active-high), open drain
■ Undervoltage Lockout (UVLO) - standard,
programmable, and legacy (see Table 1)
■ 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
8
1
SO8 (M)
TSSOP8 (DW)
Applications
■ Voice over IP (VOIP) phones
■ Web cameras
■ WLAN access points
■ Internet appliances
■ POS terminals
■ RFID readers
Table 1. Device options
Order code
External
signature
resistor (1%)
UVLO
UVLO
threshold,
rising (V)
UVLO
threshold,
falling (V)
STHS2375A
STHS2375L
STHS2376A
STHS2376L
STHS2377A
STHS2377L
24.9kΩ
Standard
39.3
30.5
24.9kΩ
Standard
39.3
30.5
24.9kΩ
Programmable
2.49
1.93
24.9kΩ
Programmable
2.49
1.93
24.9kΩ
Legacy
35.1
30.5
24.9kΩ
Legacy
35.1
30.5
Protection
mode
Auto
Latch
Auto
Latch
Auto
Latch
July 2007
Rev 4
1/20
www.st.com
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