參數(shù)資料
型號(hào)： TPS23753PW
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 0.505 A SWITCHING CONTROLLER, 273 kHz SWITCHING FREQ-MAX, PDSO14
封裝： GREEN, PLASTIC, TSSOP-14
文件頁(yè)數(shù)： 26/30頁(yè)
文件大?。?/td> 823K
代理商： TPS23753PW
GATE
RTN
V C
CS
VDD
V SS
DEN
BLNK
FRS
V B
CTL
CLS
1
2
3
4
5
6
7
8
14
13
11
10
9
12
APD
VDD1
www.ti.com
SLVS853C – JUNE 2008 – REVISED JANUARY 2010
ELECTRICAL CHARACTERISTICS (continued)
PoE and Control
[VDD = VDD1] or [VDD1] = RTN, VVC-RTN = 0 V, all voltages referred to VSS. Typical specifications are at 25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RTN (PASS DEVICE)
(VDD1 = RTN)
On resistance
0.7
1.2
Current limit
VRTN = 1.5 V, VDD = 48 V, Pulsed Measurement
405
450
505
mA
Inrush limit
VRTN = 2 V, VDD: 0 V → 48 V, Pulsed Measurement
100
140
180
mA
Foldback voltage threshold
VDD rising
11
12.3
13.6
V
Ilkg
Leakage current
VDD = VRTN = 100 V, DEN = VSS
40
μA
UVLO
UVLO_R
VDD rising
33.9
35
36.1
Undervoltage lockout threshold
V
UVLO_H
Hysteresis (2)
4.40
4.55
4.70
THERMAL SHUTDOWN
Turn off temperature
135
145
155
°C
Hysteresis(3)
20
°C
(2)
The hysteresis tolerance tracks the rising threshold for a given device.
(3)
These parameters are provided for reference only, and do not constitute part of TI's published device specifications for purposes of TI's
product warranty.
DEVICE INFORMATION
TOP VIEW
Table 1. Terminal Functions
TERMINAL
I/O
DESCRIPTION
NO.
NAME
1
CTL
I
The control loop input to the PWM (pulse width modulator). Use VB as a pull up for CTL.
5 V bias rail for dc/dc control circuits. Apply a 0.1
μF to RTN. VB may be used to bias an external optocoupler for
2
VB
O
feedback.
Dc/dc converter switching MOSFET current sense input. Connect CS to the high side of the RTN-referenced
3
CS
I
current sense resistor.
Dc/dc converter bias voltage. The internal startup current source and converter bias winding output power this pin.
4
VC
I/O
Connect a 0.22
μF minimum ceramic capacitor to RTN, and a larger capacitor to facilitate startup.
5
GATE
O
Gate drive output for the dc/dc converter switching MOSFET.
6
RTN
RTN is the negative rail input to the dc/dc converter and output of the PoE hotswap.
7
VSS
Negative power rail derived from the PoE source.
8
VDD1
Source of dc/dc converter startup current. Connect to VDD for most applications.
9
VDD
Positive input power rail for PoE interface circuit. Derived from the PoE source.
Connect a 24.9 k
resistor from DEN to VDD to provide the PoE detection signature. Pulling this pin to VSS during
10
DEN
I/O
powered operation causes the internal hotswap MOSFET to turn off.
11
CLS
O
Connect a resistor from CLS to VSS to program the classification current per Table 2.
Pull APD above 1.5 V to disable the internal PD hotswap switch, forcing power to come from an external adapter.
12
APD
I
Connect to the adapter through a resistor divider.
Connect to RTN to utilize the internally set blanking period or connect through a resistor to RTN to program the
13
BLNK
I/O
blanking period.
14
FRS
I/O
Connect a resistor from FRS to RTN to program the converter switching frequency.
Copyright 2008–2010, Texas Instruments Incorporated
5
Product Folder Link(s): TPS23753
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參數(shù)描述
TPS23753PW 制造商:Texas Instruments 功能描述:Controller IC
TPS23753PWG4 功能描述:熱插拔功率分布 PoE Interface & Iso Cnvrtr & Cntrlr RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS23753PWR 功能描述:熱插拔功率分布 Interface and Iso Cnvrtr and Cntrlr RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS23753PWRG4 功能描述:熱插拔功率分布 PoE Interface & Iso Cnvrtr & Cntrlr RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS23754EVM-383 功能描述:電源管理IC開(kāi)發(fā)工具 TPS23754 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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