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參數資料
| 型號： | TPS5140PAGR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PQFP64 |
| 封裝： | GREEN, PLASTIC, TQFP-64 |
| 文件頁數： | 1/61頁 |
| 文件大?。?/td> | 1181K |
| 代理商： | TPS5140PAGR |
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TPS5140
FOUR-CHANNEL DC/DC CONTROLLER FOR NOTEBOOK PC POWER
SLVS305A – DECEMBER 2000 – REVISED JANUARY 2001
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Three Independent Step-Down DC/DC
Controllers and One 12-V Boost DC/DC
Converter
D 4.5 V – 28 V Input Voltage Range
D Step-Down Controller Output Voltages
Adjustable Down to 1.2 V
D Synchronous-Buck Operation for High
Efficiency
D PWM Mode Control
D Auto PWM/SKIP Mode for High
Efficiency Under All Load Conditions
D High Speed Error Amplifier
D Separate Standby Control and Over
Current Protection for Each Channel
D Over Voltage and Under Voltage
Protection
D Programmable Short Circuit Protection
D Power Good With Programmable Delay
Time
D 5 V and 3.3 V Linear Regulators
description
The TPS5140 is a dc/dc controller that incorporates three synchronous-buck controllers and one
nonsynchronous 12-V boost converter on one chip to power the voltage rails needed by notebook peripheral
components. On-chip high-side and low-side synchronous rectifier drivers are integrated to drive less expensive
N-channel power MOSFETs. The nonsynchronous boost converter includes the N channel power MOSFET and
supports 120 mA for the PCMCIA power supply. The outputs are controlled independently and two of the
synchronous-buck controllers operate 180 degrees out of phase, with the third lowering the input current ripple
and allowing a smaller input capacitance to reduce power supply cost. For higher efficiency under all load
conditions, the TPS5140 automatically adjusts each channel from the PWM mode to the skip mode
independently. The skip mode enables a lower operating frequency and shortens the pulse width to the low side
MOSFETs, thereby increasing the efficiency under light load conditions. To further extend battery life, the
TPS5140 features dead-time control and very low quiescent current. Resistorless current protection and the
fixed high-side driver voltage simplify the system design and reduce the external parts count.
Copyright
2001, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
17 18
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
19
LH2
NC
VCC
NC
VREF3.3
VREF5
REG5V_IN
NC
GND_UP
LL_UP
IN_12V
OUT_12V
NC
VCC_SENSE3
TRIP3
NC
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
20
FB1
SOFTSTART1
NC
INV2
FB2
SOFTSTART2
PWM_SEL
Ct
GND
REF
STBY_VREF3.3
STBY_VREF5
STBY1
STBY2
STBY12V
STBY3
21 22 23 24
LL2
V
_SENSE12
63 62 61 60 59
64
58
NC
LH1
OUT1_u
LL1
NC
OUT1_d
OUTGND1
INV3
NC
LH3
OUT3_u
PG–DELA
Y
NC
EXT_PG
O
FTST
AR
T_12V
PHASE_12V
SOFTST
AR
T3
FB3
56 55 54
25 26 27 28 29
53 52
SCP
TRIP2
OUTGND2
51 50 49
30 31 32
LL3
OUT3_d
OUTGND3
OUT2_d
TRIP1
OUT2_u
INV1
NC
PGOUT
CC
PAG PACKAGE
(TOP VIEW)
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS5140PAGRG4 | 功能描述:DC/DC 開關控制器 Quad Output Hi Eff DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS51427 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL D-CATM SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS |
| TPS51427_1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL D-CATM SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS |
| TPS51427A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL D-CAPa?￠ SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS |
| TPS51427ARHBR | 功能描述:DC/DC 開關控制器 Dual D-Cap Sync Step Down Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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