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參數(shù)資料
| 型號： | HPA00001D |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW POWER CURRENT MODE PUSH-PULL PWM |
| 中文描述： | 低功耗電流模式推拉脈寬調(diào)制 |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 160K |
| 代理商： | HPA00001D |
SLUS456D
–
APRIL 1999 - REVISED AUGUST 2002
2
www.ti.com
description (continued)
The UCC3808A family offers a variety of package options, temperature range options, and choice of undervoltage
lockout levels. The family has UVLO thresholds and hysteresis options for off-line and battery powered systems.
Thresholds are shown in the table below.
The UCC3808A is an enhanced version of the UCC3808 family. The significant difference is that the A versions
feature an internal discharge transistor from the CS pin to ground, which is activated each clock cycle during the
oscillator dead time. The feature discharges any filter capacitance on the CS pin during each cycle and helps minimize
filter capacitor values and current sense delay.
ORDERING INFORMATION
TA = TJ
Packaged Devices
UVLO Option
12.5 V/8.3 V
SOIC (D)
UCC2808AD
–
1
PDIP (N)
UCC2808AN
–
1
TSSOP (PW)
UCC2808APW
–
1
–
40
°
C to 85
°
C
4.3 V/4.1 V
UCC2808AD
–
2
UCC2808AN
–
2
UCC2808APW
–
2
0
°
C to 70
°
C
12.5 V/8.3 V
UCC3808AD
–
1
UCC3808AN
–
1
UCC3808APW
–
1
4.3 V/4.1 V
UCC3808AD
–
2
UCC3808AN
–
2
UCC3808APW
–
2
D (SOIC
–
8) and PW (TSSOP
–
8) packages are available taped and reeled. Add TR suffix to device type (e.g.
UCC3808ADTR
–
1) to order quantities of 2500 devices per reel for SOIC-8 and 2000 devices per reel for TSSOP-8.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage (IDD
≤
10 mA)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply current
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTA/OUTB source current (peak)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTA/OUTB sink current (peak)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog inputs (FB, CS)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power dissipation at T
A
= 25
°
C (N package)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power dissipation at T
A
= 25
°
C (D package)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power dissipation at T
A
= 25
°
C (PW package)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature (soldering, 10 sec.)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 V
20 mA
–
0.5 A
1.0 A
–
0.3 V to VDD 0.3 V, not to exceed 6 V
1 W
650 mW
400 mW
–
65
°
C to150
°
C
–
55
°
C to 150
°
C
300
°
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.
Currents are positive into, negative out of the specified terminal. Consult Packaging Section of the
Power Supply Control Data Book (TI Literature
Number SLUD003)
for thermal limitations and considerations of packages.
electrical characteristics, T
A
= 0
°
C to 70
°
C for the UCC3808A-x, –40
°
C to 85
°
C for the UCC2808A-x,
VDD = 10 V (see Note 6), 1-
μ
F capacitor from VDD to GND, R = 22 k
, C = 330 pF T
A
= T
J
, (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Oscillator Section
Oscillator frequency
175
194
213
kHz
Oscillator amplitude/VDD
NOTES:
1. Measured at RC. Signal amplitude tracks VDD.
6. For UCCx808A
–
1, set VDD above the start threshold before setting at 10 V.
See Note 1
0.44
0.5
0.56
V/V
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| HPA00001DTR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW POWER CURRENT MODE PUSH-PULL PWM |
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| HPA00021DGGR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:14-BIT REGISTERED BUFFER WITH SSTL 2 INPUTS AND OUTPUTS |
| HPA00033DTR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Single Ended Active Clamp/Reset PWM |
| HPA00034DTR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Single Ended Active Clamp/Reset PWM |
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