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SC190DEVB 数据表(PDF) 3 Page - Semtech Corporation

部件名 SC190DEVB
功能描述  Synchronous Buck Converter with Programmable Output
PDF  18 Pages
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制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC190DEVB 数据表(HTML) 3 Page - Semtech Corporation

  SC190DEVB Datasheet HTML 1Page - Semtech Corporation SC190DEVB Datasheet HTML 2Page - Semtech Corporation SC190DEVB Datasheet HTML 3Page - Semtech Corporation SC190DEVB Datasheet HTML 4Page - Semtech Corporation SC190DEVB Datasheet HTML 5Page - Semtech Corporation SC190DEVB Datasheet HTML 6Page - Semtech Corporation SC190DEVB Datasheet HTML 7Page - Semtech Corporation SC190DEVB Datasheet HTML 8Page - Semtech Corporation SC190DEVB Datasheet HTML 9Page - Semtech Corporation Next Button
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 2005 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC190
Parameter
Symbol
Conditions
Min
Typ
Max
Units
VOUT Accuracy
V
OUT
I
OUT = 150mA
-3
3
%
MODE = V
IN, IOUT = 1mA
3
3
%
I
OUT = 150mA, TA = +25°C
-1.5
1.5
%
MODE = V
IN, IOUT = 1mA,
T
A = +25°C
-1.5
1.5
%
Back-end LDO
Load Regulation (BELDO)
VOUT
LOADREG
I
OUT= 100µA to 5mA
MODE = V
IN
-0.1
0.1
%/mA
Back-end LDO Line
Regulation (BELDO)
VOUT
LINEREG
V
IN = 2.7V to 5.5V
MODE = V
IN
-0.3
0.3
%/V
Back-end LDO
Current Limit (BELDO)
I
out LIMLDO
MODE = V
IN
20
40
60
mA
Front-end LDO (FELDO)
V
BP
I
BP = 180mA
(3)
300
325
mV
P-Channel Current Limit
I
LIM(P)
500
630
860
mA
N-Channel Current Limit
I
LIM(N
-270
-420
-520
mA
Quiescent Current
I
Q
MODE = V
IN, IOUT = 100µA
(4)
10
15
µA
Shutdown Current
I
SD
EN = 0
0.1
1
µA
LX Leakage Current PMOS
I
LXP
V
IN = 5.5V, LX = 0V, EN = 0
0.1
1
µA
LX Leakage Current NMOS
I
LXN
V
IN = 5.5V, LX = 5.5V, EN = 0
-20
0.1
µA
Output Voltage Noise
e
n
C
OUT = 4.7µF, VOUT = 1V,
I
OUT = 1mA, 100Hz < f < 100kHz
93
µV
RMS
Oscillator Frequency
f
OSC
0.87
1.0
1.12
MHz
SYNC Frequency (upper)
f
SYNCU
1.5
MHz
SYNC Frequency (lower)
f
SYNCL
750
kHz
Unless otherwise noted: V
IN = 3.6V, SYNC/PWM = VIN, MODE = GND, EN = VIN, TA = -40 to 85°C. Typical values are at TA = +25°C. This device is ESD sensitive.
Use of standard ESD handling precautions is required.
Electrical Characteristics (Cont.)



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