LT3436 LINER [Linear Technology], LT3436 Datasheet - Page 13

• Manufacturer Part Number: LT3436
• Description: 3A, 800kHz Step-Up Switching Regulator
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO S
3.3V TO 4.2V
GND
V IN
Q1: MMBT2222A
Q2: FMMT3906
L1: CDRH6D28-3R0
4.7µF
X5R
6.3V
CERAMIC
LED ON
Boost Converter Drives Luxeon III 1A 3.6V White LED with 70% Efficiency
+
OFF
C1
4.7µF
20V
U
8.2k
ON
**
*
COILTRONICS CTX15-4
INPUT VOLTAGE MAY BE GREATER OR
LESS THAN OUTPUT VOLTAGE
V
SHDN
SYNC
IN
SHDN
GND
GND
4V-9V
0.05Ω
LT3436
1%
4V TO 9V
L1
LT3436
V
IN
V
GND
IN
**
IN
0.1µF
SW
V
to 5V
FB
V
V
C
SW
C
FB
R1
2.2k
C4
15nF
OUT
1A CONSTANT CURRENT
SEPIC Converter**
•
L1A*
15µH
Q1
UPS120
V
4.7µF
C5
470pF
OUT
C2
78.7k
4.99k
†
MAX I
0.84A
1.03A
1.18A
1.29A
1.50A
I
OUT
•
L1B*
15µH
OUT
V
B220A
4V
5V
6V
7V
9V
IN
49.9Ω
1%
1.21k
1%
V
Q2
D1
IN
+
–
LXHL-PW09 EMITTER
LT3436 • TA03
LT1783
R2
31.6k
1%
R3
10k
1%
+
C3
47µF
10V
V
5V
3436 TA03b
OUT
†
22µF
X5R
10V
CERAMIC
V
OUT
= V IN + V LED
LT3436
13
3436fa