LTC3814-5 Datasheet, PDF (28/28 Pages) Linear Technology – 60V Current Mode Synchronous Step-Up Controller

LTC3814-5
TYPICAL APPLICATION
24V Input Voltage to 50V/5A
PGOOD
V_IN
V_OUT
143k
R_OFF
806k
150k
C_OFF
100pF
10k
100k
C_SS
1000pF
R_FB2
499Ω
C_C2
330pF
R_C
300k
C_C1
150pF
1 _IOFF
BOOST ¹⁶
2
LTC3814-5
15
3
V_OFF
V_RNG
4
5
6
PGOOD
I_TH
V_FB
TG
SW ¹⁴
13
PGND
12
BG
7
11
RUN/SS
INTV_CC
8
10
SGND
EXTV_CC
9
NDRV
SGND
R_FB1
30.9k
R_NDRV
100k
C_B
0.1μF
D_B
BAS19
M3
ZXMN10A07F
C_IN1
68μF
50V
L1
10μH
V_IN
12V* TO 40V
C_IN2
1μF
50V
PGND
M1
Si7850DP
C_DRVCC
0.1μF
M2
Si7850DP
D1
B1100
C_OUT1
220μF
63V
×2
V_OUT
50V
5A
C_OUT2
10μF
100V
×2
C_VCC
1μF
PGND
38145 TA02
*I_OUT(MAX) = 2A AT V_IN = 12V
RELATED PARTS
PART NUMBER
LTC1624
DESCRIPTION
Current Mode DC/DC Controller
LTC1700
LTC1871/LTC1871-7
LTC1872/LTC1872B
LT^®1930
LT1931
LTC3401/LTC3402
LTC3703/LTC3703-5
LTC3704
LT3782
No R_SENSE™ Synchronous Step-Up Controller
No R_SENSE, Wide Input Range DC/DC Boost Controller
SOT-23 Boost Controller
1.2MHz, SOT-23 Boost Converter
Inverting 1.2MHz, SOT-23 Converter
1A/2A 3MHz Synchronous Boost Converters
100V Synchronous Controller
Positive-to Negative DC/DC Controller
2-Phase Step-Up DC/DC Controller
LTC3803/LTC3803-5 200kHz Flyback DC/DC Controller
LTC3813
100V Current Mode Synchronous Step-Up Controller
LTC3872
LTC3873
No R_SENSE Current Mode Boost DC/DC Controller
No R_SENSE Constant-Frequency Boost/Flyback/SEPIC
Controller
No R_SENSE is a trademark of Linear Technology Corporation.
COMMENTS
SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design;
V_IN Up to 36V
Up to 95% Efficiency, Operating as Low as 0.9V Input
No R_SENSE, Current Mode Control, 2.5V ≤ V_IN ≤ 36V
Delivers Up to 5A, 550kHz Fixed Frequency, Current Mode
Up to 34V Output, 2.6V V_IN 16V, Miniature Design
Positive-to Negative DC/DC Conversion, Miniature Design
Up to 97% Efficiency, Very Small Solution, 0.5V ≤ V_IN ≤ 5V
Step-Up or Step Down, 600kHz, SSOP-16, SSOP-28
No R_SENSE, Current Mode Control, 50kHz to 1MHz
High Power Boost with Programmable Frequency, 150kHz to 500kHz,
6V ≤ V_IN ≤ 40V
Optimized for Driving 6V MOSFETs ThinSOT
Large 1Ω Gate Drivers, No Current Sense Resistor Required
550kHz Fixed Frequency, 2.75V ≤ V_IN ≤ 9.8V
V_IN and V_OUT Limited Only by External Components
28 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
38145fb
LT 0408 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2007