LT8330 LT8331
深圳凌特代理 价格咨询 13828760986
LT8330 LT8331 QQ在线 2677332671 赵工
LT8330 LT8331 Features Description
Low IQ 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 operation
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: IQ = 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
VIN SW
FBX
GND
EN/UVLO
LT8330
VIN
12V
6.8μH VOUT
