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參數(shù)資料
| 型號： | TL497ACNSE4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.5 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO14 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 324K |
| 代理商： | TL497ACNSE4 |
TL497A
SWITCHING VOLTAGE REGULATORS
SLVS009D – JUNE 1976 – REVISED JULY 1999
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1)
15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage, VO
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI(COMP INPUT)
5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI(INHIBIT)
5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diode reverse voltage
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power switch current
750 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diode forward current
750 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Notes 2 and 3): D package
86
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
101
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
113
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. All voltage values except diode voltages are with respect to network ground terminal.
2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability.
3. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
recommended operating conditions
MIN
MAX
UNIT
Supply voltage, VCC
4.5
12
V
High-level input voltage, VIH
INHIBIT pin
2.5
V
Low-level input voltage, VIL
INHIBIT pin
0.8
V
Step-up configuration (see Figure 1)
VI + 2
30
Output voltage
Step-down configuration (see Figure 2)
Vref
VI – 1
V
Inverting regulator (see Figure 3)
–Vref
–25
Power switch current
500
mA
Diode forward current
500
mA
Operating free-air temperature range TA
TL497AC
0
70
°C
O erating free-air tem erature range, TA
TL497AI
–40
85
°C
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相關代理商/技術參數(shù) |
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|---|---|
| TL497ACNSLE | 制造商:TI 制造商全稱:Texas Instruments 功能描述:500-mA PEAK STEP-UP, STEP-DOWN, INVERTING SWITCHING VOLTAGE REGULATOR |
| TL497ACNSR | 功能描述:直流/直流開關調(diào)節(jié)器 500-mA Peak S-U S-D Switching Volt Reg RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TL497ACNSRE4 | 功能描述:直流/直流開關調(diào)節(jié)器 500-mA Peak S-U S-D Switching Volt Reg RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TL497ACNSRG4 | 功能描述:直流/直流開關調(diào)節(jié)器 500-mA Inverting Switching Vltg Reg RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TL497ACPW | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SWITCHING VOLTAGE REGULATORS |
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