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参数资料
型号： TPS23756PWP
厂商： TEXAS INSTRUMENTS INC
元件分类： 稳压器
英文描述： 1.1 A SWITCHING CONTROLLER, 278 kHz SWITCHING FREQ-MAX, PDSO20
封装： GREEN, PLASTIC, HTSSOP-20
文件页数： 37/41页
文件大小： 1405K
代理商： TPS23756PWP
TPS23754
TPS23754-1
TPS23756
www.ti.com
SLVS885D – OCTOBER 2008 – REVISED DECEMBER 2009
ELECTRICAL CHARACTERISTICS – PoE AND CONTROL
[VDD=VDD1] or [VDD1=RTN], VC = RTN, COM=RTN=ARTN, all voltages referred to VSS unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
DETECTION (DEN)
(VDD = VDD1 = RTN = VSUPPLY positive)
Measure ISUPPLY
Detection current
VDD = 1.6 V
62
64.3
66.5
μA
VDD = 10 V
399
406
414
VDD = 10 V, float DEN, measure ISUPPLY,
Detection bias current
5.6
10
μA
Note: Not during Mark state
VPD_DIS
Hotswap disable threshold
3
4
5
V
DEN leakage current
VDEN = VDD = 57 V, float VDD1 and RTN, measure IDEN
0.1
5
μA
CLASSIFICATION (CLS)
(VDD = VDD1 = RTN = VSUPPLY positive)
13 V
≤ VDD ≤ 21 V, Measure ISUPPLY
RCLS = 1270
1.8
2.1
2.4
RCLS = 243
9.9
10.4
10.9
Classification current,
ICLS
mA
applies to both cycles
RCLS = 137
17.6
18.5
19.4
RCLS = 90.9
26.5
27.7
29.3
RCLS = 63.4
38.0
39.7
42
Classification mark resistance
5.6 V
≤ VDD ≤ 9.4 V
7.5
9.7
12
k
VCL_ON
Regulator turns on, VDD rising
11.2
11.9
12.6
Classification regulator lower
V
threshold
VCL_H
Hysteresis(1)
1.55
1.65
1.75
VCU_OFF
Regulator turns off, VDD rising
21
22
23
Classification regulator upper
V
threshold
VCU_H
Hysteresis(1)
0.5
0.75
1.0
VMSR
Mark state reset
VDD falling
3
4
5
V
Leakage current
VDD = 57 V, VCLS = 0 V, DEN = VSS, measure ICLS
1
μA
PASS DEVICE (RTN)
(VDD1 = RTN)
On resistance
0.25
0.43
0.75
Current limit
VRTN = 1.5 V, VDD = 48 V, pulsed measurement
850
970 1100
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
UVLO
VUVLO_R
VDD rising
33.9
35
36.1
UVLO threshold
V
VUVLO_H
Hysteresis(1)
4.4
4.55
4.76
T2P
Perform classification algorithm, VT2P-RTN = 1 V,
ON characteristic
2
mA
CTL = ARTN
Leakage current
VT2P = 18 V, CTL = VB
10
μA
tT2P
Delay
From start of switching to T2P active
5
9
15
ms
THERMAL SHUTDOWN
Turnoff temperature
TJ rising
135
145
155
°C
Hysteresis(2)
20
°C
(1)
The hysteresis tolerance tracks the rising threshold for a given device.
(2)
These parameters are provided for reference only, and do not constitute part of TI's published specifications for purposes of TI's product
warranty.
Copyright 2008–2009, Texas Instruments Incorporated
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