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TPS51125ARGER Datasheet(PDF) 4 Page - Texas Instruments

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No. de pieza TPS51125ARGER
Descripción Electrónicos  Dual-Synchronous, Step-Down Controller with Out-of-Audio??Operation and 100-mA LDOs for Notebook System Power
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TPS51125ARGER Datasheet(HTML) 4 Page - Texas Instruments

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TPS51125A
SLUS976E – SEPTEMBER 2009 – REVISED MARCH 2012
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, VIN = 12 V (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
VOUT Discharge
IDischg
VOUT discharge current
ENTRIPx = 0 V, VOx = 0.5 V
10
60
mA
Output Drivers
Source, VBSTx - DRVHx = 100 mV
4
8
RDRVH
DRVH resistance
Sink, VDRVHx - LLx = 100 mV
1.5
4
Source, VVREG5 - DRVLx = 100 mV
4
8
RDRVL
DRVL resistance
Sink, VDRVLx = 100 mV
1.5
4
DRVHx-off to DRVLx-on
10
TD
Dead time
ns
DRVLx-off to DRVHx-on
30
Clock Output
VCLKH
High level voltage
IVCLK = -10 mA, VO1 = 5 V, TA = 25 °C
4.84
4.92
V
VCLKL
Low level voltage
IVCLK = 10 mA, VO1 = 5 V, TA = 25 °C
0.06
0.12
fCLK
Clock frequency
TA = 25 °C
175
270
325
kHz
Internal BST Diode
VFBST
Forward voltage
VVREG5-VBSTx, IF = 10 mA, TA = 25 °C
0.7
0.8
0.9
V
IVBSTLK
VBST leakage current
VBSTx = 34 V, LLx = 28 V, TA = 25 °C
0.1
1
μA
Duty and Frequency Control
TON11
CH1 on time 1
VIN = 12 V, VO1 = 5 V, 200 kHz setting
2080
TON12
CH1 on time 2
VIN = 12 V, VO1 = 5 V, 245 kHz setting
1700
TON13
CH1 on time 3
VIN = 12 V, VO1 = 5 V, 300 kHz setting
1390
TON14
CH1 on time 4
VIN = 12 V, VO1 = 5 V, 365 kHz setting
1140
TON21
CH2 on time 1
VIN = 12 V, VO2 = 3.3 V, 250 kHz setting
1100
ns
TON22
CH2 on time 2
VIN = 12 V, VO2 = 3.3 V, 305 kHz setting
900
TON23
CH2 on time 3
VIN = 12 V, VO2 = 3.3 V, 375 kHz setting
730
TON24
CH2 on time 4
VIN = 12 V, VO2 = 3.3 V, 460 kHz setting
600
TON(min)
Minimum on time
TA = 25 °C
80
TOFF(min)
Minimum off time
TA = 25 °C
300
Softstart
TSS
Internal SS time
Internal soft start
1.1
1.6
2.1
ms
Powergood
PG in from lower
92.50%
95%
97.50%
102.50
107.50
VTHPG
PG threshold
PG in from higher
105%
%
%
PG hysteresis
2.50%
5%
7.50%
IPGMAX
PG sink current
PGOOD = 0.5 V
5
12
mA
TPGDEL
PG delay
Delay for PG in
350
510
670
μs
4
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Product Folder Link(s): TPS51125A


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