參數(shù)資料
型號： TPS51220ARTVR
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： DUAL SWITCHING CONTROLLER, 333 kHz SWITCHING FREQ-MAX, PQCC32
封裝： 5 X 5 MM, PLASTIC, QFN-32
文件頁數(shù)： 34/53頁
文件大?。?/td> 1380K
代理商： TPS51220ARTVR
SLUS897D – DECEMBER 2008 – REVISED FEBRUARY 2010
www.ti.com
ORDERING INFORMATION
ORDERABLE
TA
PACKAGE(1)
PINS
DEVICE
TRANSPORT MEDIA
QUANTITY
ECO PLAN
NUMBER
TPS51220ARTVT
250
TPS51220ARTVR
3000
Plastic Quad
Green (RoHS
-40°C to 85°C
32
Tape and Reel
Flat Pack (QFN)
and no Sb/Br)
TPS51220ARSNT
250
TPS51220ARSNR
3000
(1)
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range, EN = 3.3V, VIN = 12V, V5SW = 5V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
VIN shutdown current, TA = 25°C,
IVINSDN
VIN shutdown current
7
15
mA
No Load, EN = 0V, V5SW = 0 V
VIN standby current, TA = 25°C, No Load,
IVINSTBY
VIN Standby Current
80
120
mA
EN1 = EN2 = V5SW = 0 V
Vbat standby current, TA = 25°C, No Load
IVBATSTBY
VBAT Standby Current
500
mA
SKIPSEL2 = 2V, EN2 = open, EN1 = V5SW = 0V(1)
TRIP = 5 V
0.8
mA
V5SW current, TA = 25°C, No Load,
IV5SW
V5SW Supply Current
ENx = 5V, VFBx = 1.05 V
TRIP = 0 V
0.9
mA
VREF2 OUTPUT
I(VREF2) < ±10 mA, TA = 25°C
1.98
2.00
2.02
VVREF2
VREF2 Output Voltage
V
I(VREF2) < ±100 mA, 4.5V < VIN < 32 V
1.97
2.00
2.03
VREG3 OUTPUT
V5SW = 0 V, I(VREG3) = 0 mA, TA = 25°C
3.279
3.313
3.347
VVREG3
VREG3 Output Voltage
V
V5SW = 0 V, 0 mA < I(VREG3) < 10 mA,
3.135
3.300
3.400
5.5 V < VIN < 32 V
IVREG3
VREG3 Output Current
VREG3 = 3 V
10
15
20
mA
VREG5 OUTPUT
V5SW = 0 V, I(VREG5) = 0 mA, TA = 25°C
4.99
5.04
5.09
V
V5SW = 0 V, 0 mA < I(VREG5) < 100 mA,
4.90
5.03
5.15
VVREG5
VREG5 Output Voltage
6 V < VIN < 32 V
V5SW = 0 V, 0 mA < I(VREG5) < 100 mA,
4.50
5.03
5.15
V
5.5 V < VIN < 32 V
V5SW = 0 V, VREG5 = 4.5 V
100
150
200
IVREG5
VREG5 Output Current
mA
V5SW = 5 V, VREG5 = 4.5 V
200
300
400
Turning on
4.55
4.7
4.8
VTHV5SW
Switchover Threshold
V
Hysteresis
0.15
0.20
0.25
tdV5SW
Switchover Delay
Turning on
7.7
ms
RV5SW
5V SW On-Ressitance
I(VREG5) = 100 mA
0.5
OUTPUT
TA = 25°C, No Load
0.9925
1.000
1.0075
VVFB
VFB Regulation Voltage Tolerance
V
TA = –40°C to 85°C , No Load
0.990
1.000
1.010
IVFB
VFB Input Current
VFBx = 1.05 V, COMPx = 1.8 V, TA = 25°C
–50
50
nA
RDISCHG
CSNx Discharge Resistance
ENx = 0 V, CSNx = 0.5 V, TA = 25°C
20
40
(1)
Specified by design. Detail external condition follows application circuit of Figure 57.
4
Copyright 2008–2010, Texas Instruments Incorporated
Product Folder Link(s) :TPS51220A
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