LT8330
1
8330fa
For more information
www.linear.com/LT8330
Typical applicaTion
FeaTures
DescripTion
Low I
Q
Boost/SEPIC/
Inverting Converter
with 1A, 60V Switch
The
LT
®
8330
is a current mode DC/DC converter capable
of generating either positive or negative output voltages
using a single feedback pin. It can be configured as a
boost, SEPIC or inverting converter consuming as low as
6µA of quiescent current. Low ripple Burst Mode opera-
tion maintains high efficiency down to very low output
currents while keeping the output ripple below 15mV in
a typical application. The internally compensated current
mode architecture results in stable operation over a wide
range of input and output voltages. Integrated soft-start
and frequency foldback functions are included to control
inductor current during start-up. The 2MHz operation
combined with small package options, enables low cost,
area efficient solutions.
48V Boost Converter
applicaTions
n
3V to 40V Input Voltage Range
n
Ultralow Quiescent Current and Low Ripple Burst
Mode
®
Operation: I
Q
= 6µA
n
1A, 60V Power Switch
n
Positive or Negative Output Voltage Programming
with a Single Feedback Pin
n
Fixed 2MHz Switching Frequency
n
Accurate 1.6V EN/UVLO Pin Threshold
n
Internal Compensation and Soft-Start
n
Low Profile (1mm) ThinSOT™ Package
n
Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN
Package
n
Industrial and Automotive
n
Telecom
n
Medical Diagnostic Equipment
n
Portable Electronics
L
, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Efficiency and Power Loss
EFFICIENCY
POWER LOSS
LOAD CURRENT (mA)
0
40
80
120
160
0
10
20
30
40
50
60
70
80
90
100
0
100
200
300
400
500
600
700
800
900
1000
EFFICIENCY (%)
POWER LOSS (mW)
8330 TA01b
4.7µF
34.8k
4.7µF
1µF
4.7pF
V
IN
SW
FBX
GND
EN/UVLO
LT8330
V
IN
12V
6.8µH
V
OUT
48V
135mA
V
CC
INT
1M
