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参数资料
| 型号： | SC1537CMTR |
| 厂商： | Semtech Corporation |
| 英文描述： | 700mA SmartLDOTM |
| 中文描述： | 700mA电流SmartLDOTM |
| 文件页数： | 3/7页 |
| 文件大小： | 95K |
| 代理商： | SC1537CMTR |
2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
700mA SmartLDO
TM
SC1537
PRELIMINARY - July 25, 2000
3
Parameter
Symbol
Test Conditions
MIN
TYP
MAX
Unit
VAUX (Cont.)
Reverse Leakage From VIN
I
VAUX
VIN = 5.5V, VAUX = 0V, I
O = 0mA
-5.0
-50.0
A
-
100.0
5V Detect
(1)(2)(3)
Low Threshold Voltage
V
TH(LO)
VIN Falling, I
O = 20mA
3.92
4.05
4.18
V
3.90
4.20
Hysteresis
V
HYST
90
170
mV
80
High Threshold Voltage
V
TH(HI)
VIN Rising, I
O = 20mA
4.35
V
VO
LDO Output Voltage
VO
I
O = 20mA
3.267
3.300
3.333
V
4.75V
≤ VIN ≤ 5.25V, 0mA ≤ I
O ≤ 700mA
3.234
3.366
Output Current
I
O
400
mA
Line Regulation
REG
(LINE)
VIN = 4.75V to 5.25V
0.20
0.60
%
0.80
Load Regulation
REG
(LOAD)
I
O = 10mA to 700mA
0.6
1.0
%
1.2
Drive Output
Drive Voltage
V
DR
4.75V
≤ VIN ≤ 5.25V, I
DR = 200A
3.4
VIN - 0.8
V
3.3
VIN < V
TH(LO), IDR = -200A
35
150
mV
250
Peak Drive Current
I
DR(PK)
Sinking: VIN = 3.9V, V
DR = 1V;
7
mA
Sourcing: VIN = 4.35V, VIN - V
DR = 2.5V
6
Drive High Delay
(1)(4)
t
DH
C
DR = 1.2nF, VIN ramping up, measured
0.5
1.0
s
from VIN = V
TH(HI) to VDR = 2V
2.0
Drive Low Delay
(1)(4)
t
DL
C
DR = 1.2nF, VIN ramping down,
measured
0.5
1.0
s
from VIN = V
TH(LO) to VDR = 2V
2.0
ELECTRICAL CHARACTERISTICS
Unless specified, T
A = 25°C, VIN = 5V, VAUX = 3.3V, IO = 700mA, CO = 10F. Values in bold apply over full operating temperature range.
NOTES:
(1) Guaranteed by design.
(2) See 5V Detect Thresholds on page 5.
(3) Recommended source impedance for 5V supply:
≤ 0.07. This will ensure that I
O x RSOURCE < VHYST, thus
avoiding DR toggling during 5V detect threshold transitions.
(4) See Timing Diagram on page 5.
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