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TPS54353MPWPREP Fiches technique(PDF) 5 Page - Texas Instruments

No de pièce TPS54353MPWPREP
Description  4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHES
Download  35 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54353MPWPREP Fiches technique(HTML) 5 Page - Texas Instruments

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TPS54352-EP
,, TPS54353-EP,, TPS54354-EP
TPS54355-EP
, TPS54356-EP, TPS54357-EP
www.ti.com ....................................................................................................................................................... SLVS684A – JANUARY 2007 – REVISED JULY 2009
Electrical Characteristics (continued)
TJ = –55°C to 125°C, VIN = 4.5 V to 20 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Falling-Edge-Triggered Bidirectional Sync System (SYNC)
SYNC out low-to-high rise time
25 pF to ground
200
500
ns
(10%/90%)(1)
SYNC out high-to-low fall time
25 pF to ground
5
10
ns
(90%/10%)(1)
Delay from rising edge to rising edge of PH
Falling-edge delay time(1)
180
°
pins, See Figure 19
Minimum input pulse width(1)
RT = 100 k
100
ns
Delay
RT = 100 k
360
ns
(falling-edge SYNC to rising-edge PH)(1)
SYNC out high-level voltage
50-k
Ω resistor to ground, No pullup resistor
2.5
V
SYNC out low-level voltage
0.6
V
SYNC in low-level threshold
0.8
V
SYNC in high-level threshold
2.3
V
Percentage of programmed frequency
–10%
10%
SYNC in frequency range(1)
225
770
kHz
Feed-Forward Modulator (Internal Signal)
Modulator gain
VIN = 12 V, TJ = 25°C
8
Modulator gain variation
±25%
Minimum controllable ON time(1)
180
ns
Maximum duty factor(1)
VIN = 4.5 V
80%
86%
VSENSE
Input bias current, VSENSE
1
µA
Enable (ENA)
Disable low-level input voltage
0.5
V
fs = 250 kHz, RT = ground
(1)
3.2
TPS54352
fs = 500 kHz, RT = Hi-Z
(1)
1.6
fs = 250 kHz, RT = ground
(1)
4
TPS54353
fs = 500 kHz, RT = Hi-Z
(1)
2
fs = 250 kHz, RT = ground
(1)
4.6
TPS54354
Internal
fs = 500 kHz, RT = Hi-Z
(1)
2.3
slow-start time
ms
fs = 250 kHz, RT = ground
(1)
4.4
(10% to 90%)
TPS54355
fs = 500 kHz, RT = Hi-Z
(1)
2.2
fs = 250 kHz, RT = ground
(1)
5.9
TPS54356
fs = 500 kHz, RT = Hi-Z
(1)
2.9
fs = 250 kHz, RT = ground
(1)
5.4
TPS54357
fs = 500 kHz, RT = Hi-Z
(1)
2.7
Pullup current source
1.8
5
10
µA
Pulldown MOSFET
II(ENA) = 1 mA
0.1
V
Power Good (PWRGD)
Power-good threshold
Rising voltage
97%
fs = 250 kHz
4
Rising-edge delay(1)
ms
fs = 500 kHz
2
Output saturation voltage
Isink = 1 mA, VIN > 4.5 V
0.05
V
PWRGD
Output saturation voltage
Isink = 100 µA, VIN = 0 V
0.76
V
Open-drain leakage current
Voltage on PWRGD = 6 V
3
µA
(1)
Specified by design, not production tested
Copyright © 2007–2009, Texas Instruments Incorporated
Submit Documentation Feedback
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Product Folder Link(s): TPS54352-EP TPS54353-EP TPS54354-EP TPS54355-EP TPS54356-EP TPS54357-EP


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