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SC453TSTRT датащи(PDF) 5 Page - Semtech Corporation

номер детали SC453TSTRT
подробное описание детали  Portable, VID Programmed Single Phase Power Supply Controller
PDF  23 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC453TSTRT датащи(HTML) 5 Page - Semtech Corporation

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© 2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC453
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Soft-Start & DAC Slew (SS)
Soft-Start/DAC
Slew Current
Note:
SS cap is not discharged
until EN goes low or
UVLO cuts in. To enable
the converter, SS has to
drop below V
SS_EN.
I
SS
Discharge (sink) Current
5
10
mA
Soft-Start transition 0 < T
A < 85°C,
- 40 < T
A < 85° C
7.5
10.5
16
μA
Sleep Exit, 0 < T
A < 85°C
204
256
310
Sleep Exit, -40 < T
A < 85°C
180
240
320
VID Transition, 0 < T
A < 85°C
102
128
155
VID Transition, -40 < T
A < 85°C
90
120
160
Soft-Start
Enable Threshold
V
SS_EN
40
100
mV
DAC (VID [5:0])
VID Input Threshold
V
iH_VID
0.55
V
V
iL_VID
0.45
DAC Output
Voltage Accuracy
V
DAC_ERR
0° < T
A < 85°C, VID [5:0] = 000000
"111111(1.708V" 0.812V)
-0.85
+0.85
%
-25°C < T
A < 85°C, VID [5:0] = 000000
"111111 (1.708V" 0.700V)
-2.0
+2.0
%
Boot Voltage (BOOTV)
Input Voltage Offset
V
BOOTV-
V
DAC
BOOTV = 1.2V
|±3|
%
BOOT Delay Time(1)
TBOOT
10
35
μs
Sleep (SLP, SLPV)
Input Voltage Offset
V
SLPV-VDAC
SLPV = 0.8V
|±3|
%
SLP Logic Threshold
V
iH_SLP
2
V
V
iL_SLP
0.8
CORE Comparator (CMP, REFIN, HYS)
Input Bias Current
I
REFIN
V
REFIN = 1.3V
|±2|
μA
Input Voltage Offset
V
CMP -
V
REFIN
|±1.5|
|±3|
mV
Electrical Characteristics (Cont.)



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