ltc1871ems-trpbf Linear Technology Corporation, ltc1871ems-trpbf Datasheet - Page 36

• Manufacturer Part Number: ltc1871ems-trpbf
• Description: Wide Input Range, No Rsense Current Mode Boost, Flyback And Sepic Controller
• Manufacturer: Linear Technology Corporation

LTC1871
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LT
LTC1624
LTC1700
LTC1871-7
LTC1872
LT1930
LT1931
LTC3401/LTC3402
LTC3704
LT3782
36
®
1619
100pF
C
C2
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
49.9k
1nF
1%
C
R1
R
R
82k
C
C
1nF
C1
DESCRIPTION
Current Mode PWM Controller
Current Mode DC/DC Controller
No R
Wide Input Range Controller
SOT-23 Boost Controller
1.2MHz, SOT-23 Boost Converter
Inverting 1.2MHz, SOT-23 Converter
1A/2A 3MHz Synchronous Boost Converters
Positive-to-Negative DC/DC Controller
2-Phase Step-Up DC/DC Controller
*COILTRONICS VP5-0155
●
SENSE
(PRIMARY = 3 WINDINGS IN PARALLEL)
R
120k
FAX: [phone]
T
Synchronous Step-Up Controller
RUN
I
FB
FREQ
MODE/SYNC
TH
f = 200kHz
LTC1871
150k
1%
R2
INTV
SENSE
High Power SLIC Supply with Undervoltage Lockout
GATE
GND
●
V
CC
IN
www.linear.com
(Also See the LTC3704 Data Sheet)
+
C1
4.7μF
X5R
+
C
220μF
16V
TPS
IN
7V TO 12V
0.1μF
10k
V
IN
C8
COMMENTS
IRL2910
300kHz Fixed Frequency, Boost, SEPIC, Flyback Topology
SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design;
V
Up to 95% Effi ciency, Operation as Low as 0.9V Input
No R
Delivers Up to 5A, 550kHz Fixed Frequency, Current Mode
Up to 34V Output, 2.6V ≤ V
Positive-to-Negative DC/DC Conversion, Miniature Design
Up to 97% Effi ciency, Very Small Solution, 0.5V ≤ V
No R
6V ≤ V
R
0.012Ω
IN
S
Up to 36V
SENSE
SENSE
1, 2, 3
IN
T1*
4.7μF
≤ 40V; 4A Gate Drive, 150kHz to 500kHz
•
50V
X5R
C2
1
, 7V Gate Drive, Current Mode Control
, Current Mode Control, 50kHz to 1MHz
•
4
•
5
•
6
LT1783
6
2
10BQ060
10BQ060
10BQ060
10k
R
1%
F1
–
+
D2
D3
D4
4
3
IN
≤ 16V, Miniature Design
1871 TA06
196k
R
1%
F2
© LINEAR TECHNOLOGY CORPORATION 2001
C3
10μF
25V
X5R
C4
10μF
25V
X5R
C5
10μF
25V
X5R
LT 0108 REV E • PRINTED IN USA
C
3.3μF
100V
OUT
IN
≤ 5V
GND
V
–24V
200mA
V
–72V
200mA
OUT1
OUT2
1871fe