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參數(shù)資料
型號(hào)： TPS40070PWPR
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝： GREEN, PLASTIC, HTSSOP-16
文件頁(yè)數(shù)： 23/28頁(yè)
文件大小： 655K
代理商： TPS40070PWPR
SLUS582J – DECEMBER 2003 – REVISED APRIL 2009 .................................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TA = –40°C to 85°C, VIN = 12 Vdc, RT = 90.9 k, IKFF = 300 A, fSW = 500 kHz, all parameters at zero power dissipation (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SHORT CIRCUIT CURRENT PROTECTION
IILIM
Current sink into current limit
80
105
125
A
VILIM(ofst)
Current limit offset voltage
VILIM = 11.5 V, (VSW - VILIM) VDD = 12 V
–75
–50
–30
mV
tHSC
Minimum HDRV pulse width
During short circuit
135
225
ns
Propagation delay to output(3)
50
ns
tBLANK
Blanking time(3)
50
ns
tOFF
Off time during a fault (SS cycle times)
7
cycles
VSW
Switching level to end precondition(3)
(VDD - VSW)
2
V
tPC
Precondition time(3)
100
ns
VILIM
Current limit precondition voltage threshold(3)
6.8
V
OUTPUT DRIVERS
tHFALL
High-side driver fall time(3)
36
CHDRV = 2200 pF, (HDRV - SW)
ns
tHRISE
High-side driver rise time(3)
48
tHFALL
High-side driver fall time(3)
72
CHDRV = 2200 pF, (HDRV - SW)
ns
VDD = 4.5 V, 0.2 V ≤ VSS≤ 4 V
tHRISE
High-side driver rise time(3)
96
tLFALL
Low-side driver fall time(3)
24
CLDRV = 2200 pF
ns
tLRISE
Low-side driver rise time(3)
48
tLFALL
Low-side driver fall time(3)
48
CLDRV = 2200 pF, VDD= 4.5 V,
ns
0.2 V
≤ VSS≤ 4 V
tLRISE
Low-side driver rise time(3)
96
IHDRV = -0.01 A, (VBOOST- VHDRV)
0.7
1.0
VOH
High-level output voltage, HDRV
V
IHDRV = -0.1 A, (VBOOST - VHDRV)
0.95
1.30
(VHDRV - VSW), IHDRV = 0.01A
0.06
0.10
VOL
Low-level output voltage, HDRV
V
(VHDRV - VSW), IHDRV = 0.1 A
0.65
1.0
(VDBP - VLDRV), ILDRV= -0.01A
0.65
1.00
VOH
High-level output voltage, LDRV
V
(VDBP - VLDRV), ILDRV = -0.1 A
0.875
1.200
ILDRV = 0.01 A
0.03
0.05
VOL
Low-level output voltage, LDRV
V
ILDRV = 0.1 A
0.3
0.5
ZERO CURRENT DETECTION
IZERO
Zero current threshold, TPS40070
–5
0
5
mV
BOOST REGULATOR
VBOOST
Output voltage
VDD = 12 V
15.2
17.0
V
UVLO
VUVLO
Programmable UVLO threshold voltage
RKFF = 90.9 k, turn-on, VDD rising
6.2
7.2
8.2
Programmable UVLO hysteresis
RKFF = 90.9 k
1.10
1.55
2.00
V
Fixed UVLO threshold voltage
Turn-on, VDD rising
4.15
4.30
4.45
Fixed UVLO hysteresis
275
365
mV
POWER GOOD
VPG
Powergood voltage
IPG = 1 mA
370
500
VOH
High-level output voltage, FB
770
mV
VOL
Low-level output voltage, FB
630
THERMAL SHUTDOWN
Shutdown temperature threshold(3)
165
°C
Hysteresis(3)
15
(3)
Ensured by design. Not production tested.
4
Copyright 2003–2009, Texas Instruments Incorporated
Product Folder Link(s): TPS40070 TPS40071
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