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LTC3900ES8 Datasheet(PDF) 2 Page - Linear Technology

Part # LTC3900ES8
Description  Synchronous Rectifier Driver for Forward Converters
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3900ES8 Datasheet(HTML) 2 Page - Linear Technology

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LTC3900
2
3900i
Supply Voltage
VCC......................................................................................... 12V
Input Voltage
CS–, TIMER .............................. – 0.3V to (VCC +0.3V)
SYNC ...................................................... –12V to 12V
Input Current
CS+ .................................................................................... 15mA
Operating Temperature Range (Note 2) ... –40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
ORDER PART
NUMBER
S8 PART
MARKING
TJMAX = 150°C, θJA = 130°C/W
3900
LTC3900ES8
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range. VCC = 5V, TA = 25°C unless otherwise specified. (Note 3)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
SYNC
TIMER
GND
FG
CS+
CS–
CG
VCC
S8 PACKAGE
8-LEAD PLASTIC SO
1
2
3
4
8
7
6
5
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Supply Voltage Range
q
4.5
5
11
V
VUVLO
VCC Undervoltage Lockout Threshold
Rising Edge
q
4.1
4.5
V
VCC Undervoltage Lockout Hysteresis
Rising Edge to Falling Edge
0.5
V
IVCC
VCC Supply Current
VSYNC = 0V
q
0.5
1
mA
fSYNC = 100kHz, CFG = CCG = 4700pF (Note 4) q
715
mA
Timer
VTMR
Timer Threshold Voltage
q
–10%
VCC/5
10%
V
ITMR
Timer Input Current
VTMR = 0V
q
–6
–10
µA
tTMRDIS
Timer Discharge Time
CTMR = 1000pF, RTMR = 4.7k
q
40
120
ns
VTMRMAX
Timer Pin Clamp Voltage
CTMR = 1000pF, RTMR = 4.7k
2.5
V
Current Sense
ICS+CS+ Input Current
VCS+ = 0V
q
±1
µA
ICS–CS
– Input Current
VCS– = 0V
q
±1
µA
VCSMAX
CS+ Pin Clamp Voltage
IIN = 5mA, VSYNC = –5V
11
V
VCS
Current Sense Threshold Voltage
VCS– = 0V
7.5
10.5
13.5
mV
(Note 6)
q
318
mV
SYNC Input
ISYNC
SYNC Input Current
VSYNC = ±10V
q
±1
±10
µA
VSYNCP
SYNC Input Positive Threshold
q
1.0
1.4
1.8
V
SYNC Positive Input Hysteresis
(Note 5)
0.2
V
VSYNCN
SYNC Input Negative Threshold
q
–1.8
–1.4
–1.0
V
SYNC Negative Input Hysteresis
(Note 5)
0.2
V



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