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SC453 Arkusz danych(PDF) 4 Page - Semtech Corporation

Numer części SC453
Szczegółowy opis  Portable, VID Programmed Single Phase Power Supply Controller
PDF  23 Pages
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Producent  SEMTECH [Semtech Corporation]
Strona internetowa  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC453 Arkusz danych(HTML) 4 Page - Semtech Corporation

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© 2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC453
Parameter
Symbol
Conditions
Min
Typ
Max
Units
V
CCA Operating Current
I
CC
5
mA
Under-Voltage Lockout Circuits (V
CCA, V5)
Threshold (V
CCA falling)
V
HCCA
3.47
3.70
3.93
V
V
CCA Hysteresis
V
HYST CCA
190
mV
Threshold (V
5 falling)
V
HV5
3.85
4.00
4.25
V
V
5 Hysteresis
V
HYST V5
210
mV
Fixed Over-Voltage Protection (CORE)
Threshold
(CORE Rising)
V
TH CORE
FIXED
1.95
2.00
2.05
V
Enable Input (EN)
Input High
V
iH (EN)
2V
Input Low
V
iL (EN)
0.8
V
V
CORE Power Good Generator (PG_DEL, PG#)
Core Input Threshold
V
TH CORE
V
DAC = 0.6 - 1.75V
Note: during
UVLO, the
output level of
this signal is
undefined
Upper Threshold
1.1×
V
DAC
1.15×
V
DAC
V
Lower Threshold
0.86×
V
DAC
0.9×
V
DAC
Hysteresis
1
%
PG# Output Voltage
V
PG#
Pulled up with
external 680Ω
resistor to
V
PULL-UP
V
CORE = VDAC
0.4
V
Either V
CORE < 0.88*VDAC,
or, V
CORE > 1.12*VDAC
0.95×
V
PULL-UP
EN is low or EN is high
but UVLO condition
0.95×
V
PULL-UP
PG_DEL
Output Voltage
V
PG_DEL
V
CORE = VDAC pulled-up with external
680Ω resistor to V
PULL-UP 1.2V
0.95×
V
PULL-UP
V
Either V
CORE < 0.88*VDAC,
or, V
CORE > 1.12*VDAC
0.4
EN is low or EN is high
but UVLO condition
0.8
PG_DEL Delay
(at start-up)
Measured from PG# assertion
1007
Clocks
Electrical Characteristics (Cont.)



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