参数资料
型号: TL497AINE4
厂商: Texas Instruments
文件页数: 3/20页
文件大小: 0K
描述: IC REG BUCK BOOST INV ADJ 14DIP
标准包装: 25
类型: 降压(降压),升压(升压),反相
输出类型: 可调式
输出数: 1
输出电压: -25 V ~ 30 V
输入电压: 4.5 V ~ 12 V
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 14-DIP(0.300",7.62mm)
包装: 管件
供应商设备封装: 14-PDIP
TL497A
500 mA PEAK STEP UP, STEP DOWN, INVERTING SWITCHING VOLTAGE REGULATOR
SLVS009F ? JUNE 1976 ? REVISED FEBRUARY 2005
absolute maximum ratings over operating free-air temperature range (unless otherwise noted) ?
Supply voltage, V CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V
Output voltage, V O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Input voltage, V I (COMP INPUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 V
Input voltage, V I (INHIBIT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 V
Diode reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Power switch current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750 mA
Diode forward current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750 mA
Package thermal impedance, θ JA (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, T stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ?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), θ JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) ? TA)/ θ JA. 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
Low-level input voltage, VIL
INHIBIT pin
INHIBIT pin
Step-up configuration (see Figure 1)
2.5
VI + 2
0.8
30
V
V
Output voltage
Power switch current
Diode forward current
Operating free-air temperature range, TA
Step-down configuration (see Figure 2)
Inverting regulator (see Figure 3)
? DALLAS, TEXAS 75265
POST OFFICE BOX 655303
TL497AC
TL497AI
Vref
?Vref
0
?40
VI ? 1
?25
500
500
70
85
V
mA
mA
° C
3
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