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参数资料
| 型号： | TL3842Y |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, UUC8 |
| 封装： | DIE-8 |
| 文件页数： | 6/12页 |
| 文件大小： | 171K |
| 代理商： | TL3842Y |
TL284x, TL384x
CURRENT-MODE PWM CONTROLLERS
SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage (see Note 1) (ICC < 30 mA)
Self limiting
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog input voltage range, VI (VFB and ISENSE)
–0.3 V to 6.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage, VO (OUTPUT)
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI, (VC, D package only)
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply current, ICC
30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, IO
±1 A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error amplifier output sink current
10 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Notes 2 and 3): D package
86
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-8 package
97
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . .
P package
85
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Virtual junction temperature range, TJ
0
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output energy (capacitive load)
5
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature, 1,6 mm (1/16 inch) from case for 10 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 voltages are with respect to the device GND 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.
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VCC and VC
30
V
Input voltage, VI, RT/CT
0
5.5
V
Input voltage, VI, VFB and ISENSE
0
5.5
V
Output voltage, VO, OUTPUT
0
30
V
Output voltage, VO, POWER GROUND
–0.1
1
V
Supply current, externally limited, ICC
25
mA
Average output current, IO
200
mA
Reference output current, IO(ref)
–20
mA
Oscillator frequency, fosc
100
500
kHz
Operating virtual junction temperature, TJ
0
125
°C
Operating free air temperature T
TL284x
–40
85
°C
Operating free-air temperature, TA
TL384x
0
70
°C
These recommended voltages for VC and POWER GROUND apply only to the D package.
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