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參數(shù)資料
| 型號： | TPS61140DRCT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.26 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, QFN-10 |
| 文件頁數(shù)： | 21/25頁 |
| 文件大小： | 776K |
| 代理商： | TPS61140DRCT |
www.ti.com
ELECTRICAL CHARACTERISTICS (Continued)
SLVS624B – JANUARY 2006 – REVISED MARCH 2007
V
I = 3.6 V, SELx = Vin, Rset = 80 k, VO = 15 V, VIO = 15 V, TA = –40°C to 85°C, typical values are at TA = 25°C (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOLTAGE AND CURRENT CONTROL
IFB
Voltage feedback input bias current
VFB = 1.229 V
100
nA
VFB
Voltage feedback regulation voltage
1.204
1.229
1.254
V
V(ISET)
ISET pin voltage
1.204
1.229
1.254
V
K(ISET)
Current multipiler
Iout/Iset
820
900
990
V(IFB)
IFB Regulation voltage
300
330
360
mV
V(IFB_L)
IFB low threshold (1)
60
mV
tsink
Current sink settle time
Measured from SELx rising edge(2)
6
s
Ilkg
IFB pin leakage current
IFB voltage = 25 V
1
A
V(delta)
Iout-Vout regulation threshold
Iout-Vout
270
330
380
mV
V(delta_l)
Iout-Vout low threshold(3)
45
mV
I(LDO_leak) LDO leakage current
Iout = 25 V, Vout = 0 V
1
A
PSRR
LDO PSRR
Iout–Vout = 330 mV, 2 mA, 20 kHz
20
dB
POWER SWITCH AND DIODE
rDS(on)
N-channel MOSFET on-resistance
VI = VGS = 3.6 V
0.6
0.9
I(LN_NFET) N-channel leakage current
VDS = 25 V
1
A
VF
Power diode forward voltage
Id = 0.7 A
0.83
1.0
V
OC AND OVP
Dual output, V(Iout) = 15 V, D = 76%
0.75
1.0
1.26
Single output (PFM)
0.30
0.35
0.40
ILIM
N-Channel MOSFET current limit(4)
A
Single output (PWM), V(Iout) = 15 V,
0.40
0.55
0.70
D = 76%
I(LDO_MAX) LDO max output current
Iout–Vout = 330 mV
35
mA
I(IFB_MAX)
Current sink max output current
IFB = 330 mV
35
mA
TPS61140
27
28
29
VOVP
Overvoltage threshold
V
TPS61141
21
22
23
TPS61140
550
VOVP(hys)
Overvoltage hysteresis
mV
TPS61141
440
PWM AND PFM CONTROL
fS
Oscillator frequency
1
1.2
1.5
MHz
Dmax
Maximum duty cycle
PWM, VFB = 1 V
90
93
%
ton_max
Maximum on time
PFM only
5.7
s
toff_min
Minimum off time
PFM only
413
ns
THERMAL SHUTDOWN
Tshutdown
Thermal shutdown threshold
160
°C
Thys
Thermal shutdown threshold hysteresis
15
°C
(1)
When the IFB pin voltage drops this amount below V(IFB), the IFB pin is used as the boost converter feedback if the Iout-Vout voltage is
in regulation. This only occurs in BOTH-ON mode.
(2)
This specification determines the minimum on time required for PWM dimming. Using this specification, the maximum PWM dimming
frequency can be calculated from the minimum duty cycle required in the application.
(3)
When Iout-Vout voltage drops this amount below V(delta), Iout-Vout is used as the boost converter feedback input regardless of the IFB
voltage. This only occurs in BOTH-ON mode.
(4)
Measured with DC current. See APPLICATION INFORMATION for details.
5
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| TPS61140EVM-157 | 功能描述:電源管理IC開發(fā)工具 TPS61140-157 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS61141 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL OUTPUT BOOST REGULATOR USING SINGLE INDUCTOR |
| TPS61141DRCR | 功能描述:LED照明驅(qū)動器 Dual 700mA Switch 1.2MHz Boost Cnvrtr RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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