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TPS51220ARTVR датащи(PDF) 5 Page - Texas Instruments

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номер детали TPS51220ARTVR
подробное описание детали  Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS51220A
www.ti.com
SLUS897E – DECEMBER 2008 – REVISED JANUARY 2013
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, VEN = 3.3 V, VVIN = 12 V, VV5SW = 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOLTAGE TRANSCONDUCTANCE AMPLIFIER
gMv
Gain
TA = 25°C
500
μS
VID
Differential Input Voltage Range
–30
30
mV
TA = 0 to 85°C
27
33
μA
ICOMPSINK
COMP Maximum Sink Current
COMPx = 1.8 V
TA = –40 to 85°C
22
33
μA
ICOMPSRC
COMP Maximum Source Current
COMPx = 1.8 V
–33
–43
μA
VCOMP
COMP Clamp Voltage
2.18
2.22
2.26
V
VCOMPN
COMP Negative Clamp Voltage
1.73
1.77
1.81
V
CURRENT AMPLIFIER
TRIP = 0V/2V, CSNx = 5V, TA = 25°C
(2)
3.333
GC
Gain
TRIP = 3.3V/5V, CSNx = 5V, TA = 25°C
(2)
1.667
VIC
Common mode Input Voltage Range
0
13
V
VID
Differential Input Voltage Range
TA = 25°C
–75
75
mV
POWERGOOD
PG in from lower
92.5%
95%
97.5%
VTHPG
PG threshold
PG in from higher
102.5%
105% 107.5%
PG hysteresis
5%
IPG
PG sink current
PGOOD = 0.5 V
5
mA
IPG(LK)
PG leak current
PGOOD = 5 V
0
1
µA
tPGDLY
PGOOD delay
Delay for PG in
0.8
1.0
1.2
ms
SOFTSTART
tSSDYL
Soft Start Delay
Delay for Soft Start, ENx = Hi to SS-ramp starts
200
μs
tSS
Soft Start Time
Internal Soft Start
960
μs
FREQUENCY AND DUTY CONTROL
fSW
Switching Frequency
RF = 330 kΩ
273
303
333
kHz
Lo to Hi
0.7
1.3
2
V
VTHRF
RF Threshold
Hysteresis
0.2
V
fSYNC
Sync Input Frequency Range(2)
200
1000
kHz
V(DRVH) = 90% to 10%, No Load, CCM/ OOA
(2)
120
ns
tON(min)
Minimum On Time
V(DRVH) = 90% to 10%, No Load, Auto-skip
160
250
ns
tOFF(min)
Minimum Off Time
V(DRVH) = 10% to 90%, No Load
290
400
ns
DRVH-off to DRVL-on
10
30
50
ns
tD
Dead time
DRVL-off to DRVH-on
30
40
70
ns
VDTH
DRVH-off threshold
DRVH to GND (2)
1
V
VDTL
DRVL-off threshold
DRVL to GND(2)
1
V
(2)
Specified by design. Not production tested.
Copyright © 2008–2013, Texas Instruments Incorporated
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