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BAT54 датащи(PDF) 7 Page - Fairchild Semiconductor

номер детали BAT54
подробное описание детали  Dual Mobile-Friendly DDR / Dual-Output PWM Controller
Download  19 Pages
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производитель  FAIRCHILD [Fairchild Semiconductor]
домашняя страница  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

BAT54 датащи(HTML) 7 Page - Fairchild Semiconductor

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© 2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5236 • Rev. 1.3.2
7
Electrical Characteristics (Continued)
Symbol
Parameter
Conditions
Min.
Typ. Max.
Units
Power-Good Output and Control Pins
Lower Threshold
% of Set Point, 2µs Noise Filter
-86
-94
%
Upper Threshold
% of Set Point, 2µs Noise Filter
108
116
%
PG Output Low
IPG = 4mA
0.5
V
Leakage Current
VPULLUP = 5V
1
µA
PG2/REF2OUT Voltage
DDR = 1, 0mA < IREF2OUT ≤10mA
99.00
1.01
%
VREF2
DDR, EN Inputs
VINH
Input High
2
V
VINL
Input Low
0.8
V
FPWM Inputs
FPWM Low
0.1
V
FPWM High
FPWM Connected to Output
0.9
V
Block Diagram
REF2
PGOOD
EN
C
BOOT
Q1
Q2
5V
VDD
ADAPTIVE
GATE
CONTROL LOGIC
CURRENT PROCESSING
HDRV
SW
LDRV
PGND
BOOT
VDD
HYST
ISNS
VIN
C
OUT
V
OUT
PWM/HYST
PWM
S/ H
ILIM
R
SENSE
ILIM det.
HYST
SS
FPWM/VOUT
SS
DUTY
CYCLE
CLAMP
Σ
PWM
SR
Q
RAMP
MO
DDR
OSC
I
OU T
RAMP
CLK
OVP
POR/UVLO
Reference and
Soft Start
FPWM
L
OU T
VREF
EA
PWM/HYST
VSEN
FPWM/VOUT
VIN
DDR
DDR
Figure 4. IC Block Diagram


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