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參數資料
| 型號： | UC2832-EP |
| 英文描述： | Military Enhanced Plastic Precision Low Dropout Linear Controllers |
| 中文描述： | 軍事增強塑料精密低壓差線性控制器 |
| 文件頁數： | 4/11頁 |
| 文件大小： | 377K |
| 代理商： | UC2832-EP |
UC2832-EP
PRECISION LOW DROPOUT LINEAR CONTROLLER
SGLS147A
–
JANUARY 2003
–
REVISED MARCH 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics,
T
A
=
–
40 C to 105 C for the UC2832T-EP, +V
IN
= 15 V, Driver sink = +V
IN
,
C/S(+) voltage = +V
IN
, and T
A
= T
J
(unless otherwise stated)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Timer
Inactive leakage current
C/S(+) = C/S(
–
) = +VIN,
C/S(+) = +VIN,
TRC pin = 0 V
TRC pin = 2 V
0.25
1
μ
A
Active pull-up current
C/S(
–
) = +VIN
–
0.4 V,
–
345
–
270
–
175
μ
A
Duty ratio (See Note 1)
ontime/period,
RT = 200 k
, CT = 0.27
μ
F
RT = 200 k
, CT = 0.27
μ
F
4.8
%
Period (See Notes 1 and 2)
ontime + offtime,
36
ms
Upper trip threshold (Vu)
Lower trip threshold (Vl)
Trip threshold ratio
1.8
V
0.9
V
Vu / Vl
2.0
V/V
Error Amplifier Section
Input offset voltage
VCM = VCOMP = 2 V
VCM = VCOMP = 2 V
VCM = VCOMP = 2 V
VCOMP = 1 V to 13 V
VCM = 0 V to +VIN
–
3 V
VCM = 2 V, +VIN = 4.5 V to 36 V
ICOMP =
10
μ
A
ICOMP = 0,
ICOMP = 0
VCOMP = 2 V
–
8
8
mV
Input bias current
–
4.5
–
1.1
μ
A
Input offset current
–
1.5
1.5
μ
A
Open loop voltage gain (AVOL)
Common mode rejection ratio (CMRR)
50
70
dB
60
80
dB
PSRR
90
dB
Transconductance
4.3
ms
High-level output voltage (VOH)
Low-level output voltage (VOL)
Output high current (IOH)
Volts below +VIN
0.95
1.3
V
4.5
0.7
V
–
700
–
500
–
100
μ
A
Output low current (IOL)
VCOMP = 2 V
C/S(
–
) = +VIN
C/S(
–
) = +VIN
–
0.4 V
100
500
700
μ
A
2
6
mA
NOTES:
1. These parameters are first-order supply-independent, however, both may vary with supply for +VIN less than about 4 V. This supply
variation will cause a slight change in the timer period and duty cycle, although a high off-time/on-time ratio will be maintained.
2. With recommended RT value of 200 k
, TOFF
≈
RT CT * ln(Vu/Vl)
10%.
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