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SC667 Datasheet(PDF) 4 Page - Semtech Corporation

Part # SC667
Description  7 LED Light Management Unit Automatic Dropout Prevention, Ambient Light Sense Input, PWM Dimming, and 4 LDOs
PDF  47 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC667 Datasheet(HTML) 4 Page - Semtech Corporation

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SC667
4
Parameter
Symbol
Conditions
Min
Typ
Max
Units
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
∆V
LDO
I
LDOn
(6)
= 1mA, T
A = 25°C, 2.9V ≤ VIN ≤ 4.2V
-3
±1.0
+3
%
I
LDOn
(6)
= 1mA to 100mA, 2.9V ≤ V
IN ≤ 4.2V
-3.5
+3.5
%
Dropout Voltage
V
Dm
(6)
I
LDOm
(6)
= 150mA, V
IN = VLDOm + VDm
150
200
mV
V
D2
I
LDO2 = 100mA, VIN = VLDO2 + VD2
100
150
Current Limit
I
LIM
200
mA
Line Regulation
DV
LINE
I
LDOm
(6)
= 1mA, V
IN = 2.9V to 4.2V, VLDOm = 2.8V
2.1
7.2
mV
I
LDO2 = 1mA, VIN = 2.9V to 4.2V, VLDO2 = 1.8V
1.3
4.8
Load Regulation
DV
LOAD
V
LDOm
(6)
= 3.3V, I
LDOm = 1mA to 100mA
10
25
mV
V
LDO2 = 1.8V, ILDO2 = 1mA to 100mA
8
20
Power Supply Rejection Ratio
PSRR
m
(6)
1.5V < V
LDOm < 3.0V, f < 10kHz, CBYP = 22nF,
I
LDOm = 50mA, with 0.5VP-P supply ripple
53
dB
PSRR
2
1.2V < V
LDO2 < 1.8V, f < 10kHz, CBYP = 22nF,
I
LDO2 = 50mA, with 0.5VP-P supply ripple
61
Output Voltage Noise
e
n-LDOm
(6)
10Hz < f < 100kHz, C
BYP = 22nF,
C
LDOm = 1µF, ILDOm = 50 mA, 1.5V < VLDOm < 3.0V
67
µV
RMS
e
n-LDO2
10Hz < f < 100kHz, C
BYP = 22nF,
C
LDO2 = 1µF, ILDO2 = 50 mA, 1.2V < VLDO2 < 1.8V
47
Minimum LDO Capacitor (1)
C
LDO(MIN)
Nominal value for C
LDOn
(6)
1
µF
ADC Specifications
Resolution
AD
RES
8
bits
Offset
AD
OFFSET
V
LDO4 = 3.3V
1
LSB
Gain Error
AD
GAIN_ERR
V
LDO4 = 3.3V
0.1
%
Integral Non-Linearity
INL
V
LDO4 = 3.3V
1
LSB
Electrical Characteristics (continued)



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