ltc3900 Linear Technology Corporation, ltc3900 Datasheet - Page 2

• Manufacturer Part Number: ltc3900
• Description: Synchronous Rectifier Driver For Forward Converters
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
LTC3900
(Note 1)
Supply Voltage
Input Voltage
Input Current
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
temperature range.
SYMBOL
V
V
I
Timer
V
I
t
V
Current Sense
I
I
V
V
SYNC Input
I
V
V
Driver Output
R
R
I
2
ELECTRICAL CHARACTERISTICS
VCC
TMR
TMRDIS
CS
CS
SYNC
PK
CC
UVLO
TMR
TMRMAX
CSMAX
CS
SYNCP
SYNCN
ONH
ONL
+
–
V
CS
SYNC ...................................................... –12V to 12V
CS
CC .........................................................................................
+ ....................................................................................
–
, TIMER .............................. – 0.3V to (V
PARAMETER
Supply Voltage Range
V
V
V
Timer Threshold Voltage
Timer Input Current
Timer Discharge Time
Timer Pin Clamp Voltage
CS
CS
CS
Current Sense Threshold Voltage
SYNC Input Current
SYNC Input Positive Threshold
SYNC Positive Input Hysteresis
SYNC Input Negative Threshold
SYNC Negative Input Hysteresis
Driver Pull-Up Resistance
Driver Pull-Down Resistance
Driver Peak Output Current
CC
CC
CC
W
+
–
+
V
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
Supply Current
Input Current
Input Current
Pin Clamp Voltage
CC
= 5V, T
W W
A
= 25
°
C unless otherwise specified. (Note 3)
U
CC
CONDITIONS
Rising Edge
Rising Edge to Falling Edge
V
f
V
C
C
V
V
I
V
(Note 5)
V
(Note 6)
(Note 6)
I
I
(Note 6)
SYNC
IN
OUT
OUT
SYNC
TMR
TMR
TMR
CS
CS
CS
SYNC
+0.3V)
15mA
= 5mA, V
The
+ = 0V
– = 0V
– = 0V
= –100mA
= 100mA
12V
= 1000pF, R
= 100kHz, C
= 0V
= 1000pF, R
= 0V
= ±10V
●
denotes specifications which apply over the full operating
SYNC
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
= –5V
FG
TMR
TMR
CS
CS
V
CG
= C
CC
+
–
= 4.7k
T
= 4.7k
JMAX
CG
1
2
3
4
8-LEAD PLASTIC SO
= 4700pF (Note 4)
= 150°C, θ
S8 PACKAGE
TOP VIEW
JA
= 130°C/W
8
7
6
5
SYNC
TIMER
GND
FG
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
–10%
–1.8
MIN
4.5
7.5
1.0
3
U
V
10.5
–1.4
TYP
ORDER PART
4.1
0.5
0.5
2.5
1.4
0.2
0.2
0.9
0.9
CC
–6
40
11
±1
LTC3900ES8
5
7
2
MARKING
/5
NUMBER
S8 PART
3900
W
MAX
10%
13.5
–1.0
–10
120
±10
4.5
1.8
1.2
1.6
1.2
1.6
11
15
±1
±1
18
1
UNITS
U
3900f
mA
mA
mV
mV
µA
µA
µA
µA
ns
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
V
A