LTC3901_15 Datasheet, PDF (2/16 Pages) Linear Technology – Secondary Side Synchronous Driver for Push-Pull and Full-Bridge Converters

LTC3901
ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage
V_CC, PV_CC ............................................................................ 12V
Input Voltage
CSE^–, CSF^–, TIMER ................. –0.3V to (V_CC + 0.3V)
SYNC ...................................................... –12V to 12V
Input Current
CSE⁺, CSF⁺ ..................................................................... 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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
PV_CC 1
ME 2
ME 3
PGND 4
CSE^– 5
CSE⁺ 6
TIMER 7
GND 8
16 V_CC
15 MF
14 MF
13 PGND
12 CSF^–
11 CSF⁺
10 GND
9 SYNC
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 130°C/W
ORDER PART
NUMBER
LTC3901EGN
GN PART
MARKING
3901
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS _{The ● denotes specifications which apply over the full operating}
temperature range. V_CC = 5V, T_A = 25°C unless otherwise specified. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
V_CC
V_UVLO
I_VCC
Timer
Supply Voltage Range
● 4.5
5
11
V_CC Undervoltage Lockout Threshold
V_CC Undervoltage Lockout Hysteresis
V_CC Supply Current
Rising Edge
●
Rising Edge to Falling Edge
V_SYNC = 0V
●
f_SYNC = 100kHz, C_ME = C_MF = 4700pF (Note 4) ●
4.1
4.5
0.5
0.5
1
7
15
V_TMR
Timer Threshold Voltage
I_TMR
Timer Input Current
t_TMRDIS
Timer Discharge Time
V_TMRMAX
Timer Pin Clamp Voltage
Current Sense (Note 5)
V_TMR = 0V
C_TMR = 1000pF, R_TMR = 4.7k
C_TMR = 1000pF, R_TMR = 4.7k
● –10% V_CC/5 10%
●
–6
–10
●
40
120
2.5
I_CS+
I_CS–
V_CSMAX
V_CS
CS⁺ Input Current
CS^– Input Current
CS⁺ Pin Clamp Voltage
Current Sense Threshold Voltage
V_CS+ = 0V
V_CS– = 0V
I_IN = 5mA, Driver Off
V_CS– = 0V
(Note 6)
●
●
7.5
●3
±1
±1
11
10.5 13.5
18
SYNC Input
I_SYNC
V_SYNCP
SYNC Input Current
SYNC Input Positive Threshold
SYNC Positive Input Hysteresis
V_SYNC = ±10V
(Note 7)
●
±1
±10
● 1.0
1.4
1.8
0.2
V_SYNCN
SYNC Input Negative Threshold
SYNC Negative Input Hysteresis
(Note 7)
● –1.8 –1.4 –1.0
0.2
Driver Output
R_ONH
Driver Pull-Up Resistance
I_OUT = –100mA
0.9
1.2
●
1.6
R_ONL
Driver Pull-Down Resistance
I_OUT = 100mA
0.8
1.2
●
1.6
I_PK
Driver Peak Output Current
(Note 7)
2
UNITS
V
V
V
mA
mA
V
µA
ns
V
µA
µA
V
mV
mV
µA
V
V
V
V
Ω
Ω
A
3901f
2