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SC1155CSW Arkusz danych(PDF) 5 Page - Semtech Corporation

Numer części SC1155CSW
Szczegółowy opis  PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER WITH VRM 9.0 VID RANGE
PDF  19 Pages
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Producent  SEMTECH [Semtech Corporation]
Strona internetowa  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1155CSW Arkusz danych(HTML) 5 Page - Semtech Corporation

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SC1155
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
WITH VRM 9.0 VID RANGE
© 2000 SEMTECH CORP.
PRELIMINARY - August 7, 2000
5
ELECTRICAL CHARACTERISTICS (cont.)
Unless specified: 0 < T
J < 125°C, VIN = 12V
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP MAX UNITS
HYSTERETIC COMPARATOR
Input Offset Voltage
Vos
HYSCMP
V
DROOP pin grounded
5
mV
Input Bias Current
Ibias
HYSCMP
1µA
Hysteresis Accuracy
V
HYS_ACC
7mV
Hysteresis Setting
V
HYS_SET
60
mV
DROOP COMPENSATION
Initial Accuracy
V
DROOP_ACC
V
DROOP = 50mV
5
mV
OVERCURRENT PROTECTION
OCP Trip Point
V
OCP
0.09
0.1
0.11
V
Input Bias Current
Ibias
OCP
100
nA
HIGH-SIDE VDS SENSING
Gain
2V/V
Initial Accuracy
V
IOUT_ACC
V
HISENSE = 12V, VIOUTLO = 11.9V
6
mV
IOUT Source
Isource
IOUT
V
IOUT = 0.5V, VHISENSE = 12V,
V
IOUTLO = 11.5V
500
µA
IOUT Sink Current
Isink
IOUT
V
IOUT = 0.05V, VHISENSE = 12V,
V
IOUTLO = 12V
40
50
µA
IOUT Voltage Swing
V
IOUT (IN)
V
HISENSE = 11V,
R
IOUT = 10k0hm
03.75
V
VIOUT Voltage Swing
V
IOUT(4,5V)
V
HISENSE = 4.5V,
R
IOUT = 10kOhm
02.0
V
VIOUT Voltage Swing
V
IOUT(3V)
V
HISENSE = 3V, RIOUT = 10kOhm
0
1.0
V
LOSENSE High Level Input Voltage
Vih
LOSENSE
V
HISENSE = 4.5V (Note 1)
2.85
V
LOSENSE Low Level Input Voltage
Vil
LOSENSE
V
HISENSE = 4.5V (Note 1)
1.8
V
Sample/Hold Resistance
R
S/H
4.5V
≤ = 13V
50
65
80
Ω
BUFFERED REFERENCE
VREFB Load Regulation
Vldreg
REFB
10µA < I
REFB < 500µA
2
mV
DEADTIME CIRCUIT
LOHIB High Level Voltage
Vih
LOHIB
2V
LOHIB Low Level Input Voltage
Vil
LOHIB
1.0
V
LOWDR High Level Input Voltage
Vih
LOWDR
(Note 1)
2
V
LOWDR Low Level Input Voltage
Vil
LOWDR
(Note 1)
1.0
V



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