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參數資料
| 型號： | TPS54040DGQ |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.5 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | PLASTIC, MSOP-10 |
| 文件頁數： | 23/47頁 |
| 文件大小： | 2435K |
| 代理商： | TPS54040DGQ |
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PACKAGE DISSIPATION RATINGS
(1)
ELECTRICAL CHARACTERISTICS
www.ti.com................................................................................................................................................................................................... SLVS918 – MARCH 2009
THERMAL IMPEDANCE
PACKAGE
JUNCTION TO AMBIENT
MSOP
57 °C/W
(1)
Test board conditions:
A. 3 inches × 3 inches, 2 layers, thickness: 0.062 inch
B. 2-ounce copper traces located on the top and bottom of the PCB
C. 6 (13 mil diameters) THERMAL VIAS LOCATED UNDER THE DEVICE PACKAGE
TJ = –40°C to 150°C, VIN = 3.5 to 42V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE (VIN PIN)
Operating input voltage
3.5
42
V
Internal undervoltage lockout
No voltage hysteresis, rising and falling
2.5
V
threshold
Shutdown supply current
EN = 0 V, 25°C, 3.5 V
≤ VIN ≤ 42 V
1.3
4
A
Operating : nonswitching supply
VSENSE = 0.83 V, VIN = 12 V, 25°C
116
136
current
ENABLE AND UVLO (EN PIN)
Enable threshold voltage
No voltage hysteresis, rising and falling, 25°C
0.9
1.25
1.55
V
Enable threshold +50 mV
–3.8
Input current
A
Enable threshold –50 mV
–0.9
Hysteresis current
–2.9
A
VOLTAGE REFERENCE
TJ = 25°C
0.792
0.8
0.808
Voltage reference
V
0.784
0.8
0.816
HIGH-SIDE MOSFET
VIN = 3.5 V, BOOT-PH = 3 V
300
On-resistance
m
VIN = 12 V, BOOT-PH = 6 V
200
410
ERROR AMPLIFIER
Input current
50
nA
Error amplifier transconductance (gM) –2 A < ICOMP < 2 A, VCOMP = 1 V
97
Mhos
–2
A < I
COMP < 2 A, VCOMP = 1 V,
Error amplifier transconductance (gM)
26
Mhos
during slow start
VVSENSE = 0.4 V
Error amplifier dc gain
VVSENSE = 0.8 V
10,000
V/V
Error amplifier bandwidth
2700
kHz
Error amplifier source/sink
V(COMP) = 1 V, 100 mV overdrive
±7
A
COMP to switch current
1.9
A/V
transconductance
CURRENT LIMIT
Current limit threshold
VIN = 12 V, TJ = 25°C
0.6
0.94
A
THERMAL SHUTDOWN
Thermal shutdown
182
°C
Copyright 2009, Texas Instruments Incorporated
3
Product Folder Link(s): TPS54040
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS54040DGQ | 制造商:Texas Instruments 功能描述:Power Management IC 制造商:Texas Instruments 功能描述:IC, STEP-DOWN CONVERTER, MSOP-10 |
| TPS54040DGQR | 功能描述:直流/直流開關轉換器 3.5V-42Vin,0.5A Step Down SWIFT Convrtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| TPS54040EVM-456 | 功能描述:電源管理IC開發工具 0.5A,12-42V In SWIFT Cnvrtr Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS54040EVM-456 | 制造商:Texas Instruments 功能描述:EVALUATION MODULE FOR TPS54040 SWIFT(TM) |
| TPS54040-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:0.5-A 42-V STEP-DOWN SWIFTa?￠ DC/DC CONVERTER WITH Eco-modea?￠ |
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