LTC3900_1 Datasheet, PDF (2/20 Pages) Linear Technology – Synchronous Rectifier Driver for Forward Converters

LTC3900
Absolute Maximum Ratings
(Note 1)
Supply Voltage
V_CC.........................................................................12V
Input Voltage
CS^–, TIMER............................... – 0.3V to (V_CC +0.3V)
SYNC....................................................... –12V to 12V
Input Current
CS⁺.....................................................................15mA
Operating Junction Temperature Range (Note 2)
LTC3900E............................................ –40°C to 125°C
LTC3900I............................................ –40°C to 125°C
LTC3900H........................................... –40°C to 150°C
LTC3900MP........................................ –55°C to 150°C
Storage Temperature Range.................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
Pin Configuration
TOP VIEW
CS⁺ 1
CS^– 2
CG 3
V_CC 4
8 SYNC
7 TIMER
6 GND
5 FG
S8 PACKAGE
8-LEAD PLASTIC SO
T_JMAX = 150°C, θ_JA = 130°C/W
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3900ES8#PBF
LTC3900ES8#TRPBF 3900
8-Lead Plastic Small Outline
–40°C to 125°C
LTC3900IS8#PBF
LTC3900IS8#TRPBF
3900
8-Lead Plastic Small Outline
–40°C to 125°C
LTC3900HS8#PBF
LTC3900HS8#TRPBF 3900
8-Lead Plastic Small Outline
–40°C to 150°C
LTC3900MPS8#PBF
LTC3900MPS8#TRPBF 3900
8-Lead Plastic Small Outline
–55°C to 150°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3900ES8
LTC3900ES8#TR
3900
8-Lead Plastic Small Outline
–40°C to 125°C
LTC3900IS8
LTC3900IS8#TR
3900
8-Lead Plastic Small Outline
–40°C to 125°C
LTC3900HS8
LTC3900HS8#TR
3900
8-Lead Plastic Small Outline
–40°C to 150°C
LTC3900MPS8
LTC3900MPS8#TR
3900
8-Lead Plastic Small Outline
–55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
Electrical Characteristics The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T_A = 25°C. V_CC = 5V unless otherwise specified. (Notes 2, 3)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_CC
Supply Voltage Range
l 4.5
5
11
V
V_UVLO
I_VCC
Timer
V_CC Undervoltage Lockout Threshold
V_CC Undervoltage Lockout Hysteresis
V_CC Supply Current
Rising Edge
l
Rising Edge to Falling Edge
V_SYNC = 0V
l
f_SYNC = 100kHz, C_FG = C_CG = 4700pF (Note 4) l
4.1
4.5
V
0.5
V
0.5
1
mA
7
15
mA
V_TMR
I_TMR
Timer Threshold Voltage
Timer Input Current
V_TMR = 0V
l –10% V_CC/5 10%
V
l
–6
–10
µA
3900fb
2