Datasheet
LTC3901
2
3901f
The ●
denotes specifications which apply over the full operating
temperature range. V
CC
= 5V, T
A
= 25°C unless otherwise specified. (Note 3)
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
ORDER PART
NUMBER
GN PART
MARKING
T
JMAX
= 125°C, θ
JA
= 130°C/W
3901
LTC3901EGN
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
ELECTRICAL CHARACTERISTICS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PV
CC
ME
ME
PGND
CSE
–
CSE
+
TIMER
GND
V
CC
MF
MF
PGND
CSF
–
CSF
+
GND
SYNC
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage Range ● 4.5 5 11 V
V
UVLO
V
CC
Undervoltage Lockout Threshold Rising Edge ● 4.1 4.5 V
V
CC
Undervoltage Lockout Hysteresis Rising Edge to Falling Edge 0.5 V
I
VCC
V
CC
Supply Current V
SYNC
= 0V ● 0.5 1 mA
f
SYNC
= 100kHz, C
ME
= C
MF
= 4700pF (Note 4) ● 715 mA
Timer
V
TMR
Timer Threshold Voltage ● –10% V
CC
/5 10% V
I
TMR
Timer Input Current V
TMR
= 0V ● –6 –10 µA
t
TMRDIS
Timer Discharge Time C
TMR
= 1000pF, R
TMR
= 4.7k ● 40 120 ns
V
TMRMAX
Timer Pin Clamp Voltage C
TMR
= 1000pF, R
TMR
= 4.7k 2.5 V
Current Sense (Note 5)
I
CS
+CS
+
Input Current V
CS
+ = 0V ● ±1 µA
I
CS
–CS
–
Input Current V
CS
– = 0V ● ±1 µA
V
CSMAX
CS
+
Pin Clamp Voltage I
IN
= 5mA, Driver Off 11 V
V
CS
Current Sense Threshold Voltage V
CS
– = 0V 7.5 10.5 13.5 mV
(Note 6)
● 318mV
SYNC Input
I
SYNC
SYNC Input Current V
SYNC
= ±10V ● ±1 ±10 µA
V
SYNCP
SYNC Input Positive Threshold ● 1.0 1.4 1.8 V
SYNC Positive Input Hysteresis (Note 7) 0.2 V
V
SYNCN
SYNC Input Negative Threshold ● –1.8 –1.4 –1.0 V
SYNC Negative Input Hysteresis (Note 7) 0.2 V
Driver Output
R
ONH
Driver Pull-Up Resistance I
OUT
= –100mA 0.9 1.2 Ω
● 1.6
R
ONL
Driver Pull-Down Resistance I
OUT
= 100mA 0.8 1.2 Ω
● 1.6
I
PK
Driver Peak Output Current (Note 7) 2 A