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SP6139 Datasheet(PDF) 3 Page - Exar Corporation

Part # SP6139
Description  Wide Input, 1.3MHz Synchronous PWM Step Down Controller
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP6139 Datasheet(HTML) 3 Page - Exar Corporation

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S
SP
P6
61
13
39
9
W
Wiid
de
e IIn
np
pu
utt,, 1
1..3
3M
MH
Hz
z S
Sy
yn
nc
ch
hrro
on
no
ou
us
s P
PW
WM
M S
Stte
ep
p D
Do
ow
wn
n
C
Co
on
nttrro
olllle
err
© 2008 Exar Corporation
3/16
Rev. 2.0.0
Parameter
Min.
Typ.
Max.
Units
Conditions
SS Discharge Current:
1
mA
Fault Present, SS = 0.2V
Short Circuit Threshold Voltage
0.20
0.25
0.30
V
Measured VREF (0.8V) - VFB
Hiccup Timeout
50
ms
VFB = 0.5V
Number of Allowable Clock
Cycles at 100% Duty Cycle
20
Cycles
VFB = 0.7V
Minimum GL Pulse After 20
Cycles
0.5
Cycle
VFB = 0.7V
Thermal Shutdown Temperature
145
°C
Thermal Hysteresis
10
°C
GH & GL Rise Times
35
50
ns
Measured 10% to 90%
GH & GL Fall Times
30
40
ns
Measured 90% to 10%
GL to GH Non Overlap Time
45
70
ns
GH & GL Measured at 2.0V
SWN to GL Non Overlap Time
25
40
ns
Measured SWN = 100mV to GL = 2.0V
GH & GL Pull Down Resistance
50
Driver Pull Down Resistance
1.5
Driver Pull Up Resistance
2.5
BLOCK DIAGRAM
Fig. 2:SP6139 Block Diagram


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