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| 型號： | TPS61080DRCR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 3 MM, 1 MM HEIGHT, PLASTIC, QFN-10 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大小： | 917K |
| 代理商： | TPS61080DRCR |
www.ti.com
SLVS644B – FEBRUARY 2006 – REVISED JANUARY 2007
ELECTRICAL CHARACTERISTICS (continued)
VIN = 3.6 V, EN = VIN, T
A = –40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SOFT START
TA = 25°C
4.75
5
5.25
Iss
Soft start bias current
A
4.6
5
5.4
Vclp
SS pin to FB pin accuracy
Vss = 500 mV
487
500
513
mV
FEEDBACK FB
IFB
Feedback input bias current
VFB = 1.229 V
–100
100
nA
VFB
Feedback regulation voltage
1.204
1.229
1.254
V
POWER SWITCH AND DIODE
Isolation MOSFET on-resistance
0.06
0.1
RDS(ON)
VIN = VGS = 3.6 V
0.17
0.22
N-channel MOSFET on-resistance
VIN = VGS = 2.5 V
0.2
0.32
ILN_NFET
N-channel leakage current
VDS = 28 V
1
2
A
VF
Power diode forward voltage
Id = 1 A
0.85
1
V
ILN_ISO
Isolation FET leakage current
L pin to ground
1
A
OC AND SC
TPS61080, FSW = High or FSW = Low
0.5
0.7
1.0
ILIM
N-Channel MOSFET current limit(1)
A
TPS61081, FSW = High or FSW = Low
1.3
1.6
2.0
TPS61080
1.0
2.2
ISC
Short circuit current limit
A
TPS61081
2.0
3.5
Tscd
Short circuit delay time
13
s
Tscr
Short circuit release time
57
ms
VSC
OUT short detection threshold (2)
VIN – VOUT
1.4
V
OSCILLATOR
FSW pin high
1.0
1.2
1.5
fS
Oscillator frequency
MHz
FSW pin low
0.5
0.6
0.7
Dmax
Maximum duty cycle
FB = 1.0 V
90%
94%
Dmin
Minimum duty cycle
5%
Rfsw
FSW pin pull down resistance
400
800
1600
k
FSW high logic
1.6
VFSW
V
FSW low logic
0.8
OVP
Output overvoltage protection
Vout rising
27
28
29
V
Vovp
Output overvoltage protection hysteresis
Vout falling
0.7
V
THERMAL SHUTDOWN
Tshutdown
Thermal shutdown threshold
160
°C
Thysteresis Thermal shutdown threshold hysteresis
15
°C
(1)
VIN = 3.6 V, Vout = 15 V, Duty cycle = 76%. See Figure 6 to Figure 9 for other operation conditions.
(2)
OUT short circuit condition is detected if OUT stays lower than VIN – Vsc for 2 ms after IC enables.
4
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