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參數(shù)資料
| 型號： | UCC2977TRPW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Precision 500 mA regulators |
| 中文描述： | 鎮(zhèn)流器/背光控制器/驅(qū)動器| TSSOP封裝| 8引腳|塑料 |
| 文件頁數(shù)： | 4/28頁 |
| 文件大?。?/td> | 433K |
| 代理商： | UCC2977TRPW |
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SLUS499A
–
NOVEMBER 2001
–
REVISED JANUARY 2002
4
www.ti.com
electrical characteristics V
DD
= 3 V to 13.5 V, T
A
= 0
°
C to 70
°
C for UCC3975/UCC3976/UCC3977,
T
A
=
–
40
°
C to 85
°
C for the UCC2975/UCC2976/UCC2977, T
A
= T
J
(unless otherwise noted)
input supply
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
2.5
UNITS
mA
μ
A
V
VDD supply current
Normal, VDD = 12 V
Shutdown
1
20
100
VDD UVLO (turn-on) threshold voltage
2.70
2.85
3.00
UVLO hysteresis
100
200
300
mV
output
PARAMETER
TEST CONDITIONS
Driving logic low
MIN
TYP
MAX
0.9
UNITS
P
–
channel driver output voltage, VOUTP
P-channel driver output voltage, (VDD
–
VOUTP)
Low-level N
–
channel driver output voltage, VOUTN
High-level N
–
channel driver output voltage,
(VDD
–
VOUTN)
Rise time
IPIN = 100 mA,
IPIN =
–
100 mA,
IPIN = 100 mA,
0.5
Driving logic high
0.5
0.9
Driving logic low
0.5
0.9
V
IPIN =
–
100 mA,
Driving logic high
0.5
0.9
VDD = 5 V,
See Note 1
CL = 1 nF,
200
Fall time
200
ns
Dead (overlap) time
See Note 1
250
oscillator
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
1.8
UNITS
Upper threshold voltage
1.6
1.7
V
Lower threshold voltage
0.65
0.70
0.80
Frequency
ROSC = 24 k
,
COSC = 470 pF
95
100
105
kHz
error amplifier
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input voltage
1.465
1.500
1.535
V
Line regulation voltage
3 V
≤
VDD
≤
13.5 V
–
2
2
6
mV
Input bias current
–
500
–
100
nA
Open loop gain
0.5 V
≤
COMP
≤
3.0V,
FB = 2 V,
ICOMP = 0.23 mA
FB = 1 V,
See Note 1
60
80
dB
Low-level output voltage
OPEN/SD = 1 V
0.08
0.15
V
COMP = 2 V
1.5
5.0
mA
Output source current
FB = 1 V,
OPEN/SD = 3 V
COMP = 2 V,
–
10
10
μ
A
FB = 2 V,
COMP = 2 V
2.5
4.5
6
mA
Output sink current
FB = 2 V,
OPEN/SD = 3 V
COMP = 2 V,
–
10
10
μ
A
Unity gain bandwidth frequency
NOTE: 1. Ensured by design. Not production tested.
TJ = 25
°
C,
See Note 1
2
MHz
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