參數(shù)資料
型號： TPS65170RHDT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 4.2 A SWITCHING REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC28
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-28
文件頁數(shù)： 23/35頁
文件大小： 4698K
代理商： TPS65170RHDT
www.ti.com
SLVSA27 – OCTOBER 2009
ELECTRICAL CHARACTERISTICS
VIN = 12V; VS = 17V; VLOGIC = 3.3V; TA = –40°C to 85°C; typical values are at 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER SUPPLY
IIN
Supply current
VFB, VFBB, VFBP = 1.3V, VFBN = –50mV
1
10
mA
UVLO
UVLO threshold
VIN rising
7.8
8.2
8.5
V
INTERNAL OSCILLATOR
fSW
Switching frequency
600
750
900
kHz
BOOST CONVERTER
VS
Output voltage
Measured after isolation switch
13
18.5
V
VFB
Feedback regulation voltage
–1%
1.24
1%
V
IFB
Feedback input bias current
VFB = 1.24V
±0.01
±1
A
ILIM
Switch current limit
2.8
3.5
4.2
A
Ilkg
Switch leakage current
VSW = 12V
10
A
rDS(on)
Switch ON resistance
ISW = ILIM
0.12
0.22
Ω
tSW
Switching time
Turn-on and turn-off
10
ns
Line regulation
9.6V < VIN < 14.4V, IS = 750mA
0.02
%/V
Load regulation
VS = 17V, IS = 100mA to 1.5A
0.1
%/A
VOVP
Overvoltage threshold
VFB rising
VFB +3%
VFB +5%
V
ISS
Soft start current
VSS = 1.24V
10
A
VFB(SC)
Short circuit threshold
VFB rising
200
mV
BUCK CONVERTER
VLOGIC
Output voltage
–3%
3.3
3%
V
IFBB
Feedback input bias current
VFBB = 3.3V
±125
A
ILIM
Switch current limit
1.5
2.1
2.8
A
Ilkg
Switch leakage current
VSWB = GND
10
A
rDS(on)
Switch ON resistance
0.21
0.35
Ω
tSW
Switching time
Turn-on and turn-off
10
ns
Line regulation
VIN = 9.6V to 14.4V, ILOGIC = 0.5A
0.01
%/V
Load regulation
ILOGIC = 150mA to 1.5A
0.2
%/A
VPG
Power good threshold
VLOGIC rising
3.2
V
VFBB(SC)
Short circuit threshold
VFBB rising
1.065
V
tSS
Soft start time
0.66
ms
POSITIVE CHARGE PUMP CONTROLLER
VFBP
Feedback regulation voltage
ICTRLP = 1mA (sinking)
-3%
1.24
+3%
V
IFBP
Feedback input bias current
VFBP = 1.24V
±1
±100
nA
ICTRLP
Base drive current for external
Normal operation (sinking)
5
mA
transistor
Short-circuit operation (sinking)
40
55
75
A
Line regulation
VIN = 9.6V to 14.4V, VGH = 27V, IGH =
±0.1
%/V
50mA, including external components
Load regulation
VGH = 27V, IGH = 10mA to 50mA,
±1
%/A
including external components
NEGATIVE CHARGE PUMP CONTROLLER
VFBN
Feedback regulation voltage
ICTRLN = 1mA (sourcing)
–36
0
36
mV
IFBN
Feedback input bias current
VFBN = 0V
±1
±100
nA
ICTRLN
Base drive current for external
Normal operation (sourcing)
2.5
mA
transistor
Short-circuit operation (sourcing)
200
300
480
A
Line regulation
VIN = 9.6V to 14.4V, VGL = -7V, IGL =
±0.1
%/V
50mA, including external components
Copyright 2009, Texas Instruments Incorporated
3
Product Folder Link(s) :TPS65170
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