LT3999
16
3999fa
For more information www.linear.com/LT3999
LINEAR TECHNOLOGY CORPORATION 2014
LT 0415 REV A • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LT3999
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT3439 Slew Rate Controlled Ultralow Noise 1A Isolated DC/DC
Transformer Driver
V
IN
: 2.7V to 17.5V, I
Q
(Supply) = 12mA, I
SD
< 12mA, SO-16,
Low Noise: <100mV
P-P
, Independent Control of Switch Voltage
and Current Slew Rates
LT1533 Slew Rate Controlled Ultralow Noise 1A Switching Regulator V
IN
: 2.7V to 23V, I
Q
(Supply) = 12mA, I
SD
< 12mA, SO-16,
Low Noise: <100mV
P-P
, Independent Control of Switch Voltage
and Current Slew Rates
LT1683 Slew Rate Controlled Ultralow Noise Push-Pull Controller V
IN
: 2.7V to 20V, I
Q
(Supply) = 25mA, I
SD
< 24mA, SSOP-20,
Low Noise: <200mV
P-P
, Independent Control of Switch Voltage
and Current Slew Rates
LT1738 Slew Rate Controlled Ultralow Noise DC/DC Controller V
IN
: 2.7V to 20V, I
Q
(Supply) = 12mA, I
SD
< 24mA, SSOP-20,
Greatly Reduced Conducted and Radiated EMI
, Independent
Control of Switch Voltage and Current Slew Rates
5V to 12V, 1W Low Power Push-Pull DC Transformer
V
IN
SYNC
UVLO
OVLO/DC
RDC
LT3999
SWA
C
OUT
2.2µF
16V
D1, D2: VISHAY BAT54C
T1: COOPER BUSSMANN CTX02-19065R
T1
D1A
D1B
V
OUT
12V
0.08A
• •
• •
V
IN
5V
SWB
GND
R
ILIM
40.3k
R
BIAS
49.9k
C
SS
0.1µF
R
T
12.1k
1MHz
R1
261k
R2
100k
C
IN
10µF
10V
3999 TA05
RT
ILIM/SS
RBIAS
