LT3959E 查看數據表（PDF） - Linear Technology
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产品描述 (功能)
生产厂家
LT3959E
Linear Technology
LT3959E Datasheet PDF : 26 Pages
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LT3959
Typical Application
2.5V to 8V Input, 12V Output Boost Converter
VIN
2.5V TO 8V
L1
10µH
D1
CIN
22µF
16V
X5R
R3
124k
R4
121k
R5
47k
VIN
PGOOD
EN/UVLO
SW
GND
SYNC
LT3959
DRIVE
SGND
GNDK
FBX
RT
RT
27.4k
300kHz
SS
VC INTVCC
CSS
0.22µF
RC
3.4k
CC
22nF
CVCC
4.7µF
10V
X5R
L1: COILTRONICS DR125-100
D1: VISHAY SILICONIX 20BQ030
COUT
47µF
16V
X5R
×2
VOUT
12V
500mA, 2.5V ≤ VIN < 5V
1A, 5V ≤ VIN ≤ 8V
R2
105k
R1
15.8k
3959 TA05
Efficiency vs Output Current
100
VIN = 5V
Load Step Response at VIN = 8V
95
VOUT
500mV/DIV
90
(AC)
85
IOUT
0.8A
500mA/DIV
80
0.2A
75
70
0
200 400 600 800
OUTPUT CURRENT (mA)
1000
3759 TA05b
500µs/DIV
3959 TA05c
Related Parts
PART NUMBER
LT3957
LT3958
LT3759
LT3758
LT3757
LT3748
LT3798
DESCRIPTION
Boost, Flyback, SEPIC and Inverting Converter
with 5A, 40V Switch
Boost, Flyback, SEPIC and Inverting Converter
with 3.3A, 84V Switch
Boost, Flyback, SEPIC and Inverting Controller
Boost, Flyback, SEPIC and Inverting Controller
Boost, Flyback, SEPIC and Inverting Controller
100V Isolated Flyback Controller
Off-Line Isolated No Opto-Coupler Flyback
Controller with Active PFC
COMMENTS
3V ≤ VIN ≤ 40V, 100kHz to 1MHz Programmable Operation Frequency,
5mm × 6mm QFN Package
5V ≤ VIN ≤ 80V, 100kHz to 1MHz Programmable Operation Frequency,
5mm × 6mm QFN Package
1.6V ≤ VIN ≤ 42V, 100kHz to 1MHz Programmable Operation Frequency,
MSOP-12E Package
5.5V ≤ VIN ≤ 100V, 100kHz to 1MHz Programmable Operation Frequency,
3mm × 3mm DFN-10 and MSOP-10E Packages
2.9V ≤ VIN ≤ 40V, 100kHz to 1MHz Programmable Operation Frequency,
3mm × 3mm DFN-10 and MSOP-10E Packages
5V ≤ VIN ≤ 100V, No Opto Flyback , MSOP-16 with High Voltage Spacing
VIN and VOUT Limited Only by External Components
26 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950F3o5r -m7o4r1e7information www.linear.com/LT3959
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LT3959
3959fa
LT 0613 REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2012
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