參數(shù)資料
型號(hào): 2844B
廠(chǎng)商: Texas Instruments, Inc.
英文描述: HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
中文描述: 高性能的電流模式PWM控制器
文件頁(yè)數(shù): 4/21頁(yè)
文件大小: 336K
代理商: 2844B
www.ti.com
Absolute Maximum Ratings
(1)(2)
over operating free-air temperature range (unless otherwise noted)
Recommended Operating Conditions
TL284xB, TL384xB
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610A–AUGUST 2006–REVISED SEPTEMBER 2006
MIN
MAX
UNIT
Low impedance source
30
V
CC
Supply voltage
V
Self
I
CC
< 30 mA
limiting
V
I
I
CC
I
O
I
O(sink)
Analog input voltage range
Supply current
Output current
Error amplifier output sink current
VFB and I
SENSE
–0.3
6.3
30
±
1
10
97
86
85
V
mA
A
mA
8 pin
14 pin
D package
θ
JA
Package thermal impedance
(3)(4)
°
C/W
P package
Capacitive load
Output energy
Virtual junction temperature
Storage temperature range
Lead temperature
5
μ
J
°
C
°
C
°
C
T
J
T
stg
T
lead
150
150
300
–65
Soldering, 10 s
(1)
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.
All voltages are with respect to the device GND terminal.
Maximum power dissipation is a function of T
(max),
θ
, and T
. The maximum allowable power dissipation at any allowable ambient
temperature is P
= (T
(max) – T
)/
θ
. Operating at the absolute maximum T
J
of 150
°
C can impact reliability.
The package thermal impedance is calculated in accordance with JESD 51-7.
(2)
(3)
(4)
MIN
NOM
MAX
UNIT
V
CC
VC
(1)
R
T
/C
T
VFB and I
SENSE
OUTPUT
POWER GROUND
(1)
30
30
5.5
5.5
30
V
CC
Supply voltage
V
0
0
0
V
I
Input voltage
V
V
O
Output voltage
V
–0.1
1
I
CC
I
O
I
O(ref)
f
osc
Supply current, externally limited
Average output current
Reference output current
Oscillator frequency
25
mA
mA
mA
kHz
200
–20
500
85
70
100
TL284xB
TL384xB
–40
T
J
Operating free-air temperature
°
C
0
(1)
The recommended voltages for VC and POWER GROUND apply only to the 14-pin D package.
4
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