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參數資料
型號: TPS51020DBTR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: DUAL SWITCHING CONTROLLER, 450 kHz SWITCHING FREQ-MAX, PDSO30
封裝: GREEN, PLASTIC, TSSOP-30
文件頁數: 23/29頁
文件大?。?/td> 672K
代理商: TPS51020DBTR
TPS51020
SLUS564C JULY 2003 REVISED OCTOBER 2008
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INV1
COMP1
SSTRT1
SKIP
VO1_VDDQ
DDR
GND
REF_X
ENBL1
ENBL2
VO2
PGOOD
SSTRT2
COMP2
INV2
VBST1
OUT1_U
LL1
OUT1_D
OUTGND1
TRIP1
VIN
TRIP2
VREG5
REG5_IN
OUTGND2
OUT2_D
LL2
OUT2_U
VBST2
TSSOP (0.5 mm)
DBT PACKAGE
(TOP VIEW)
ELECTRICAL CHARACTERISTICS
TA = 40°C to 85°C, 4.5 V < VIN < 20 V, CVIN = 0.1 F, CVREG5 = 2.2 F, CREF_X = 0.01 F, PGOOD = 0.2 V, ENBLx = DDR = VIN,
INVx = COMPx, RSSTRTx = OPEN, TRIP1 = TRIP2 = VIN, LLx = GND, VBSTx = LLx+5, C(OUTx_U, OUTx_D)=1 nF, REG5_IN = 0V, GND =
OUTGNDx = 0 V, VO1_VDDQ = VO2 = 0 V (unless otherwise stated)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT CURRENTS
IVIN
VIN supply current
REG5V_IN = OPEN,
TRIPx = VIN,
OSC = OFF
1.4
2.2
mA
IVIN(STBY)
VIN standby current
ENBLx = 0 V,
DDR = VIN,
REG5V_IN = OPEN,
OSC = OFF
350
550
IVIN(SHDN)
VIN shutdown current
ENBLx = DDR = 0 V,
REG5V_IN = OPEN
0.05
1.00
A
IVIN(REG5)
VIN supply current, REG5_IN as 5-V input
current
REG5V_IN = 5 V,
OSC = OFF
200
500
IREG5
REG5_IN input supply current
REG5V_IN = 5 V,
OSC = OFF
1.0
1.7
mA
IVBSTx
VBST supply current
ENBLx = DDR = VIN
0.05
1.00
A
IVBSTx
VBST shutdown current
ENBLx = DDR = 0 V
0.05
1.00
A
VREG5 INTERNAL REGULATOR
VVREG5
VREG5 voltage
IOUT = 0 A
4.8
5.0
5.2
V
VLD5
Load regulation
0 mA
≤ IOUT ≤ 50 mA,
VIN = 12 V
0.6%
2.5%
VLN5
Line regulation
IOUT = 20 mA,
7 V
≤VIN ≤ 28 V
0.4%
2.0%
VTHL
UVLO threshold voltage
High to low
3.45
3.65
3.85
V
VHYS(UV)
UVLO hysteresis
100
200
300
mV
VTH(SW)
Switchover voltage
REG_IN voltage
4.2
4.5
4.8
V
VHYS(SW)
Switchover hysteresis
50
250
mV
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