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SC643 数据表(PDF) 4 Page - Semtech Corporation

部件名 SC643
功能描述  Light Management Unit with 4 LDOs and SemPulse짰Interface
PDF  26 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC643 数据表(HTML) 4 Page - Semtech Corporation

  SC643 Datasheet HTML 1Page - Semtech Corporation SC643 Datasheet HTML 2Page - Semtech Corporation SC643 Datasheet HTML 3Page - Semtech Corporation SC643 Datasheet HTML 4Page - Semtech Corporation SC643 Datasheet HTML 5Page - Semtech Corporation SC643 Datasheet HTML 6Page - Semtech Corporation SC643 Datasheet HTML 7Page - Semtech Corporation SC643 Datasheet HTML 8Page - Semtech Corporation SC643 Datasheet HTML 9Page - Semtech Corporation Next Button
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SC643
4
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Charge Pump Electrical Specifications (Cont.)
1.5x Mode to 2x Mode
Falling Transition Voltage
V
TRANS1.5x
I
OUT
= 50mA, I
BLn
= 10mA, V
OUT
= 4.2V(5)
2.91
V
2x Mode to 1.5x Mode Hysteresis
V
HYST1.5x
I
OUT
= 50mA, I
BLn
= 10mA, V
OUT
= 4.2V(5)
520
mV
Current Sink Off-State
Leakage Current
I
BL/FL(OFF)
V
IN
= V
BLn
= 4.2V
0.1
1
μA
Pump Frequency
f
PUMP
V
IN
= 3.2V
250
kHz
LDO Electrical Specifications
LDO1, LDO3, and LDO4
Voltage Setting Range
V
LDOm
(6)
Range of nominal settings
1.5
3.3
V
LDO2 Voltage Setting Range
V
LDO2
Range of nominal settings
1.2
1.8
V
Output Voltage Accuracy
ΔV
LDO
I
LDO
= 1mA, T
A
= 25°C, 2.9V ≤ V
IN
≤ 4.2V
-3
±1.0
+3
%
I
LDO
= 1mA to 100mA, 2.9V ≤ V
IN
≤ 4.2V
-3.5
+3.5
%
Dropout Voltage
V
Dm
I
LDOm
= 150mA, V
IN
= V
LDOm
+ V
Dm
150
200
mV
V
D2
I
LDO2
= 100mA, V
IN
= V
LDO2
+ V
D2
100
150
Current Limit
I
LIM
200
mA
Line Regulation
ΔV
LINE
I
LDOm
= 1mA,
V
IN
= 2.9V to 4.2V, V
LDOm
= 2.8V
2.1
7.2
mV
I
LDO2
= 1mA,
V
IN
= 2.9V to 4.2V, V
LDO2
= 1.8V
1.3
4.8
Load Regulation
ΔV
LOAD
V
LDOm
= 3.3V,
I
LDOm
= 1mA to 100mA
25
mV
V
LDO2
= 1.8V,
I
LDO2
= 1mA to 100mA
20
Power Supply Rejection Ratio
PSRR
m
1.5V < V
LDOm
< 3.0V, f < 1kHz, C
BYP
= 22nF,
I
LDOm
= 50mA, with 0.5V
P-P
supply ripple
50
dB
PSRR
2
1.2V < V
LDO2
< 1.8V, f < 1kHz, C
BYP
= 22nF,
I
LDO2
= 50mA, with 0.5V
P-P
supply ripple
60
Output Voltage Noise
e
n-LDOm
10Hz < f < 100kHz, C
BYP
= 22nF,
C
LDOm
= 1μF, I
LDOm
= 50 mA,
1.5V < V
LDOm
< 3.0V
75
μV
RMS
e
n-LDO2
10Hz < f < 100kHz, C
BYP
= 22nF,
C
LDO2
= 1μF, I
LDO2
= 50 mA,
1.2V < V
LDO2
< 1.8V
50
Minimum LDO Capacitor (7)
C
LDO(MIN)
Nominal value for C
LDOn
1μF
Electrical Characteristics (continued)



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